Cleaning machine for electronic components

Abstract

The utility model discloses a cleaning machine for an electronic element. The cleaning machine comprises a machine base, a feeding device, a brushing device, a water circulating device, a water removing device and a material moving device. The feeding device is arranged on the machine base and provided with a workpiece feeding position. The brushing device is arranged on the machine base and provided with a brushing groove and a brush head arranged in the brushing groove. The water circulation device is connected with the brushing device and used for providing cleaning water for the brushing groove and forming water circulation. The water removing device is arranged on the machine base and provided with an air blowing head capable of blowing air outwards. The material moving device is arranged on the machine base and comprises a material taking hand and a moving driving assembly, and the moving driving assembly can drive the material taking hand to move to the workpiece feeding position, the brush head and the air blowing head. The cleaning machine for the electronic element is good in cleaning effect and capable of saving water.

Description

Technical Field

[0001] The utility model relates to production equipment for electronic components, in particular to a cleaning machine for electronic components. Background Art

[0002] Some existing electronic components, such as network transformers, need to be tinned on the pins. After the pins are tinned, they need to be cleaned by a cleaning machine to remove residues attached to the electronic components, such as rosin, tin slag, etc. The existing cleaning machines are usually ultrasonic cleaning machines, which require a large amount of water and are difficult to clean for residues with strong adhesion, resulting in insufficient cleaning effect. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an electronic component cleaning machine, which has good cleaning effect and can save water.

[0004] According to the electronic component cleaning machine of the embodiment of the utility model, it includes: a machine base; a loading device, which is arranged on the machine base, and the loading device is provided with a workpiece loading position; a brushing device, which is arranged on the machine base, and the brushing device is provided with a brushing groove and a brush head arranged on the brushing groove; a water circulation device, which is connected to the brushing device and is used to provide cleaning water to the brushing groove and form a water circulation; a dewatering device, which is arranged on the machine base, and the dewatering device is provided with a blower head capable of blowing air to the outside; a material moving device, which is arranged on the machine base, and the material moving device includes a material picking hand and a mobile driving component, and the mobile driving component can drive the material picking hand to move to the workpiece loading position, the brush head and the blower head.

[0005] The electronic component cleaning machine according to the embodiment of the utility model has at least the following beneficial effects: compared with ultrasonic cleaning, the electronic component cleaning machine mentioned above uses a brush head in a water tank to clean the electronic components, so the cleaning intensity is greater, it is easier to clean some residues with strong adhesion, and the cleaning effect is good; compared with ultrasonic cleaning, the brush head cleaning method does not require a large amount of water for the electronic components to be immersed, and combined with the setting of a water circulation device, the water consumption can be reduced, and the equipment works in an environmentally friendly manner; and the water brought out of the cleaning tank on the electronic components can be quickly blown away by the blower head.

[0006] According to some embodiments of the utility model, a drying chamber is further included. The drying chamber is arranged on the machine base and is used to dry the cleaned electronic components.

[0007] According to some embodiments of the utility model, a tray-staggering device is further included, wherein the tray-staggering device is used to receive the electronic components that have been cleaned and to perform tray-staggering, the tray-staggering device is provided with a finished tray storage area for storing the trays that have been staggered, and the drying chamber is provided in the finished tray storage area.

[0008] According to some embodiments of the utility model, the tray swinging device includes a unloading mechanism, a tray swinging manipulator, an empty tray supply mechanism, a finished tray storage mechanism and a tray transfer mechanism; the finished tray storage mechanism is arranged in the drying chamber, the tray transfer mechanism includes a tray carrier and a carrier driving assembly for driving the tray carrier to move, the tray carrier can move to an empty tray unloading position, a tray swinging position and a finished tray receiving position, the empty tray unloading position corresponds to the discharging position of the empty tray supply mechanism, the tray swinging position corresponds to the tray swinging manipulator, the finished tray receiving position corresponds to the loading position of the finished tray storage mechanism, the unloading mechanism is provided with a workpiece unloading position, the mobile driving assembly can drive the material picking arm to move to the workpiece unloading position of the unloading mechanism, the tray swinging manipulator can grab the electronic components on the unloading mechanism and place the electronic components on the tray on the tray carrier in the tray swinging position.

[0009] According to some embodiments of the present utility model, the material grabbing arm is a magnetic suction structure.

[0010] According to some embodiments of the present invention, the picker is configured to grab a whole row of electronic components.

[0011] According to some embodiments of the utility model, the loading device includes a loading conveyor and a loading alignment mechanism, the workpiece loading position is a position on the loading conveyor corresponding to the material picking hand, the loading alignment mechanism is arranged on the loading conveyor, the loading alignment mechanism includes two clamping members and a clamping driver driving the two clamping members to approach and move away from each other, the two clamping members are located on both sides of the workpiece loading position, the clamping members are strip-shaped members, and a clamping plane is provided at one end of the clamping members that are close to each other, and a material blocking portion is provided on the clamping member, and the material blocking portion extends into the conveying route of the loading conveyor.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the utility model after removing the drying chamber;

[0016] Figure 3 It is a partially enlarged schematic diagram of an embodiment of the utility model.

[0017] Reference numerals:

[0018] Electronic component 1, tray 2;

[0019] Base 100;

[0020] A feeding device 200, a feeding conveyor 210, a feeding alignment mechanism 220, a clamping member 221, a clamping driver 222, and a material blocking portion 230;

[0021] A brush cleaning device 300, a brush cleaning groove 310, and a brush head 320;

[0022] A water removal device 400, a blower head 410;

[0023] Material moving device 500, material taking hand 510, moving driving assembly 520;

[0024] Drying room 600;

[0025] Plate swinging device 700, material unloading mechanism 710, plate swinging robot 720, empty plate supply mechanism 730, finished plate storage mechanism 740, material plate transfer mechanism 750. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figures 1 to 3 , a cleaning machine for electronic components, comprising: a machine base 100, a feeding device 200, a cleaning brush device 300, a water circulation device (not shown in the drawings), a dewatering device 400 and a material moving device 500. The feeding device 200 is arranged on the machine base 100, and the feeding device 200 is provided with a workpiece loading position. The cleaning brush device 300 is arranged on the machine base 100, and the cleaning brush device 300 is provided with a cleaning brush groove 310 and a brush head 320 arranged in the cleaning brush groove 310. The water circulation device is connected to the cleaning brush device 300 and is used to provide cleaning water to the cleaning brush groove 310 and form a water circulation. The dewatering device 400 is arranged on the machine base 100, and the dewatering device 400 is provided with a blower head 410 capable of blowing air to the outside. The material moving device 500 is disposed on the machine base 100 , and includes a material picking arm 510 and a moving driving assembly 520 . The moving driving assembly 520 can drive the material picking arm 510 to move to the material position on the workpiece, the brush head 320 and the blowing head 410 .

[0031] When cleaning electronic components, the electronic components are loaded to the workpiece loading position through the loading device 200, and the electronic components are grabbed by the picker 510, and the picker 510 is driven by the moving drive assembly 520 to move the electronic components to the brush head 320 of the cleaning device 300. The cleaning tank 310 is loaded with cleaning water through the water circulation device. In the cleaning water, the electronic components are cleaned by the brush head 320, so that the residues attached to the electronic component body and the pins, such as excess flux, tin slag, etc., are brushed into the water of the cleaning tank 310. After the cleaning is completed, the picker 510 moves the electronic components to the blowing head 410 to blow off the water, and the cleaning step is completed. Compared with ultrasonic cleaning, the above-mentioned electronic component cleaning machine uses a brush head 320 in a water tank to clean electronic components, which has a stronger cleaning intensity, is easier to clean some residues with strong adhesion, and has a good cleaning effect; compared with ultrasonic cleaning, the cleaning method of the brush head 320 does not require a large amount of water for the electronic components to be immersed. Combined with the setting of a water circulation device, the water consumption can be reduced, and the equipment works in an environmentally friendly manner; and the air blower 410 can quickly blow away the moisture on the electronic components brought out from the cleaning tank 310.

[0032] In an embodiment, the water circulation device includes a water tank and a water pump. The water in the water tank is pumped to the cleaning tank 310 by the water pump, and the cleaning tank 310 flows back to the water tank through the return pipe, thereby realizing water circulation. It is conceivable that in other embodiments, the water circulation device can also provide cleaning water and form a water circulation in other ways. For example, the water tank is set at a high place, and water is supplied to the cleaning tank 310 through a water discharge pipe. At the same time, a water pump is set to pump the cleaning tank 310 back to the water tank, which can also realize the function of providing cleaning water to the cleaning tank 310 and forming a water circulation. In an embodiment, the water circulation device can be set on the machine base or on the peripheral side of the machine base, and connected to the cleaning tank 310 through a pipe.

[0033] It is understandable that in the art, there are many implementations of the structure for providing water to the cavity and forming water circulation, and those skilled in the art can configure it according to actual conditions.

[0034] In an embodiment, the picker 510 can be driven by the mobile driving assembly 520 to grab the electronic components and then reciprocate on the brush head 320 for cleaning, or the brush head 320 can be connected to a driver that drives its reciprocating motion to clean the electronic components moved to the brush head 320.

[0035] In the embodiment, the picking hand 510 adopts a magnetic suction structure. Of course, it is conceivable that in some embodiments, the picking hand 510 may also adopt a clamper structure or a vacuum suction cup structure.

[0036] In the embodiment, the pick-up hand 510 can grab a whole row of electronic components. The loading device 200 includes a loading conveyor 210 and a loading alignment mechanism 220. The loading conveyor 210 is used to dock the electronic components output by the previous process. The workpiece loading position is the position on the loading conveyor 210 corresponding to the pick-up hand 510. The loading alignment mechanism 220 is arranged on the loading conveyor 210. The loading alignment mechanism 220 includes two clamping members 221 and a clamping driver 222 that drives the two clamping members 221 to move closer to and away from each other. The two clamping members 221 are located on both sides of the workpiece loading position. The clamping members 221 are strip-shaped members, and a clamping plane is arranged at one end of the clamping members 221 that is close to each other. A material blocking portion 230 is arranged on the clamping member 221, and the material blocking portion 230 extends into the conveying route of the loading conveyor 210. After the electronic components are arranged from the previous process and enter the workpiece loading position of the loading conveyor 210, the stopper 230 on the clamping member 221 stops the electronic components and forms a queue, and the two clamping members 221 are driven to approach each other by the clamping driver 222, so that the entire row of electronic components is clamped by the clamping member 221, and the entire row of electronic components is aligned, which facilitates the accurate grasping of the material picking hand 510. In an embodiment, the clamping driver 222 can be a finger cylinder, and two can be set at both ends of the clamping member 221 for driving.

[0037] Of course, it is conceivable that the loading device 200 is not limited to the above-mentioned structure. For example, the loading device 200 includes a loading seat, and the workpiece loading position is a material trough set on the loading seat. The electronic components to be cleaned are fed into the loading seat by a robot or a pushing mechanism or manually.

[0038] In the embodiment, the workpiece loading position, the brush head 320 of the brushing groove 310, and the air blowing head 410 are arranged in the front-to-back direction, the mobile driving assembly 520 can adopt a two-axis driving module, the material picking hand 510 is connected to the mobile driving assembly 520, and the mobile driving assembly 520 can drive the material picking hand 510 to move forward and backward and up and down, so that the material picking hand 510 can move to each component to implement a specific process. Of course, it is conceivable that the mobile driving assembly 520 can also adopt some multi-axis action mechanical arms, so that it can be freely moved to the corresponding position.

[0039] In the embodiment, a drying chamber 600 is further included, and the drying chamber 600 is arranged on the machine base 100, and the drying chamber 600 is used to dry the cleaned electronic components. By setting up the drying chamber 600, excess moisture can be further dried, especially for some moisture in the gaps that is difficult to be blown off by the blower head 410.

[0040] In the embodiment, the apparatus further comprises a tray swaying device 700, which is used to receive the electronic components that have been cleaned and perform tray swaying. The tray swaying device 700 is provided with a finished tray storage area for storing the trays that have been swayed, and the drying chamber 600 is provided in the finished tray storage area. By providing the drying chamber 600 in the finished tray storage area, the space of the tray storage area is fully utilized, which greatly improves the space utilization rate of the equipment.

[0041] In the embodiment, the tray swing device 700 includes a material unloading mechanism 710, a tray swinging robot 720, an empty tray supply mechanism 730, a finished tray storage mechanism 740 and a tray transfer mechanism 750; the finished tray storage mechanism 740 is arranged in the drying chamber 600, and the tray transfer mechanism 750 includes a tray carrier and a carrier driving component for driving the tray carrier to move, and the tray carrier can move to the empty tray unloading position, the tray swinging position and the finished tray receiving position, and the empty tray unloading position is connected to the empty tray supply mechanism 730. The discharging position of the mechanism 730 corresponds to the plate swinging position and the plate swinging manipulator 720, the finished material tray receiving position corresponds to the loading position of the finished material tray storage mechanism 740, the unloading mechanism 710 is provided with a workpiece unloading position, and the mobile driving component 520 can drive the material picking arm 510 to move to the workpiece unloading position of the unloading mechanism 710, and the plate swinging manipulator 720 can grab the electronic components on the unloading mechanism 710 and place the electronic components on the tray on the tray carrier at the plate swinging position.

[0042] When performing the panning, the mobile drive assembly 520 drives the picker 510 to move the cleaned electronic components to the unloading mechanism 710, and release the electronic components to the workpiece unloading position; the carrier drive assembly of the tray transfer mechanism 750 transfers the tray carrier to the empty tray unloading position, and the empty tray supply mechanism 730 provides an empty tray to the tray carrier on the empty tray unloading position, and then the carrier drive assembly transfers the tray carrier to the panning position, and the panning manipulator 720 grabs the electronic components on the workpiece unloading position for panning. After the panning is completed, the carrier drive assembly transfers the tray carrier to the finished tray receiving position, and the finished tray storage mechanism 740 collects the tray with electronic components, completing the entire panning process of the electronic components.

[0043] The above-mentioned plate-settling device 700 has a reasonable structure, orderly operation and high efficiency. It can be understood that the above-mentioned embodiment is only a preferred embodiment of the plate-settling device 700. In the art, there are many other embodiments of the device for arranging workpieces, and those skilled in the art can reasonably configure the specific structure according to actual conditions.

[0044] In an embodiment, the pick-up hand 510 is a magnetic suction structure, which sucks electronic components by magnetic suction. For this, the unloading mechanism 710 can adopt the following structure: the unloading mechanism 710 includes a unloading seat and a unloading structure, the unloading seat is provided with a workpiece unloading position, the unloading structure includes two pressing members and a pressing driver for driving the two pressing members to move closer to and away from each other, the two pressing members are provided on both sides of the workpiece unloading position, and the pressing members are provided with a workpiece pressing surface. The pick-up hand 510 moves the electronic component to the workpiece unloading position, drives the two pressing members to move closer to each other through the pressing driver, so that the workpiece pressing surfaces of the two pressing members press against both sides of the electronic component, and then drives the pick-up hand 510 away from the workpiece unloading position, so that the electronic component can be removed to the workpiece unloading position. The pressing driver can specifically adopt a finger cylinder, and the two pressing members are respectively connected to the two driving parts of the finger cylinder. In an embodiment, the unloading mechanism 710 is located at the front side of the loading conveyor 210.

[0045] It is conceivable that the unloading mechanism 710 is not limited to the above-mentioned implementation mode. For example, when the picking arm 510 can release the electronic components by itself, the unloading mechanism 710 can be just a unloading seat; or the unloading mechanism 710 is a conveyor, and after the electronic components are unloaded, the conveyor conveys the electronic components to the plate placing robot 720.

[0046] In an embodiment, the empty tray supply mechanism 730 includes an empty tray storage rack and an empty tray discharge assembly. The empty tray storage rack is provided with a vertically extending empty tray stacking cavity, the lower end of the empty tray stacking cavity is open, and the empty tray lowering position of the tray carrier is below the empty tray stacking cavity. The empty trays are placed vertically stacked in the empty tray stacking cavity. Two inserts are provided and extend from the lower end of the empty tray stacking cavity on both sides to support the entire vertical row of trays. The inserts are connected to the insert driver, and the insert driver can drive the insert to withdraw from the tray, so that the tray falls to the tray carrier. After the tray falls, the insert driver drives the insert to insert into the empty tray stacking cavity, and the tray from the second up is supported again, so that the tray carrier can take away only one tray. In an embodiment, when receiving the tray, the carrier drive assembly can drive the tray carrier to rise to receive it, and then descend and leave after receiving the tray. In the embodiment, the insert driver may be a cylinder, an electromagnet, etc. It is conceivable that the empty tray supply mechanism 730 is not limited to the above-mentioned embodiment, for example, a conveyor may be used for transportation, and then a robot may grab the feeding tray carrier.

[0047] In an embodiment, the finished product tray storage mechanism 740 includes a finished product tray storage rack, the finished product tray storage rack has a finished product tray stacking cavity extending vertically, the lower end of the finished product tray stacking cavity is open, the finished product tray receiving position of the tray carrier is the lower side position of the finished product tray stacking cavity, and the lower end of the finished product tray storage rack is provided with a clamping structure, which can support the tray on its upper side. When the tray is fed upward from the lower end opening of the finished product tray stacking cavity, the clamping structure can be pushed to make it give way, and the tray can be supported by the clamping structure again after it passes over the clamping structure, thereby realizing the loading of the tray on the tray storage rack. The clamping structure can adopt some rotating clamps, which are rotatably arranged and connected with springs for resetting, and the rotating clamps are limited to rotate in a single direction by a limiting structure. When the tray is supported on the rotating clamp, the limiting structure limits the rotating clamp, and the rotating clamp maintains the supporting position; when the tray moves upward from the bottom to enter the finished tray storage rack, the rotating clamp is pushed open, and the rotating clamp rotates to make way, thereby allowing the tray to enter; after the tray passes over the rotating clamp, it is reset by the spring to support the tray again. When the tray carrier moves the tray with electronic components to the bottom of the finished tray stacking cavity, the carrier drive assembly drives the tray carrier to rise, allowing it to enter the finished tray stacking cavity and pass the clamping structure, thereby collecting the tray into the finished tray storage rack. It can be imagined that the finished tray storage mechanism 740 is not limited to the above-mentioned implementation method, for example, a robot is used to directly grab the tray and stack it on the storage rack.

[0048] In an embodiment, the empty tray lowering position, the swing tray position, and the finished tray receiving position of the tray carrier are arranged in a straight line, and the carrier drive assembly can specifically include a screw mechanism driven by a linear motor or a servo motor, so as to drive the tray carrier to move linearly and switch between various positions. In order to realize the lifting and lowering of the tray carrier, a vertical driving structure, such as a vertical cylinder, an electric push rod, etc., can be added on the basis of the above structure.

[0049] In an embodiment, the tray-swinging robot 720 may be a multi-axis robot, such as a two-axis, three-axis or six-axis robot, and may be configured according to actual needs, as long as it can grab the electronic components on the unloading mechanism 710 and place the electronic components according to the workpiece accommodating positions on the tray.

[0050] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A cleaning machine for electronic components, characterized in that: include: A machine base (100); A loading device (200) is arranged on the machine base (100), and the loading device (200) is provided with a workpiece loading position; A brush cleaning device (300) is arranged on the machine base (100), and the brush cleaning device (300) is provided with a brush cleaning groove (310) and a brush head (320) arranged on the brush cleaning groove (310); A water circulation device, connected to the cleaning device (300) and used to provide cleaning water to the cleaning tank (310) and form a water circulation; A dewatering device (400) is arranged on the machine base (100), and the dewatering device (400) is provided with a blowing head (410) capable of blowing air outwards; A material moving device (500) is arranged on the machine base (100), and the material moving device (500) comprises a material picking arm (510) and a moving drive assembly (520), wherein the moving drive assembly (520) can drive the material picking arm (510) to move to the material position on the workpiece, the brush head (320) and the blowing head (410).

2. The electronic component cleaning machine according to claim 1, characterized in that: It also comprises a drying chamber (600), wherein the drying chamber (600) is arranged on the machine base (100), and the drying chamber (600) is used to dry the electronic components that have been cleaned.

3. The electronic component cleaning machine according to claim 2, characterized in that: The device further comprises a tray-staggering device (700), wherein the tray-staggering device (700) is used to receive the electronic components that have been cleaned and to perform tray-staggering, and the tray-staggering device (700) is provided with a finished tray storage area for storing the trays that have been staggered, and the drying chamber (600) is arranged in the finished tray storage area.

4. The electronic component cleaning machine according to claim 3, characterized in that: The tray swing device (700) comprises a material unloading mechanism (710), a tray swinging manipulator (720), an empty tray supply mechanism (730), a finished tray storage mechanism (740) and a tray transfer mechanism (750); the finished tray storage mechanism (740) is arranged in the drying chamber (600); the tray transfer mechanism (750) comprises a tray carrier and a carrier driving component for driving the tray carrier to move; the tray carrier can move to an empty tray unloading position, a tray swinging position and a finished tray receiving position; the empty tray unloading position is connected to the empty tray supply mechanism (730) The discharging position corresponds to the plate swinging position and the plate swinging robot (720). The finished product tray receiving position corresponds to the loading position of the finished product tray storage mechanism (740). The unloading mechanism (710) is provided with a workpiece unloading position. The mobile drive assembly (520) can drive the material picking arm (510) to move to the workpiece unloading position of the unloading mechanism (710). The plate swinging robot (720) can grab the electronic components on the unloading mechanism (710) and place the electronic components on the tray on the tray carrier at the plate swinging position.

5. The electronic component cleaning machine according to claim 1, characterized in that: The material taking hand (510) is a magnetic attraction structure.

6. The electronic component cleaning machine according to claim 1 or 5, characterized in that: The picking arm (510) is configured to pick up a whole row of electronic components.

7. The electronic component cleaning machine according to claim 6, characterized in that: The loading device (200) comprises a loading conveyor (210) and a loading alignment mechanism (220); the workpiece loading position is a position on the loading conveyor (210) corresponding to the material picking hand (510); the loading alignment mechanism (220) is arranged on the loading conveyor (210); the loading alignment mechanism (220) comprises two clamping members (221) and a clamping driver (222) for driving the two clamping members (221) to move closer to and away from each other; the two clamping members (221) are located on both sides of the workpiece loading position; the clamping members (221) are strip-shaped members; a clamping plane is arranged at one end of the clamping members (221) that is close to each other; a material blocking portion (230) is arranged on the clamping member (221); and the material blocking portion (230) extends into the conveying route of the loading conveyor (210).

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