Opening and closing door structure and unloading device

Abstract

The present invention provides a switch door structure and a blanking device. The switch door structure includes: a switch door movably disposed at an opening, the switch door having a closed position that blocks the opening and an open position that avoids the opening, the switch door having a movable drive end; and a rotating wheel that is rotatably disposed, the rotating wheel having multiple threaded protrusions, a threaded groove formed between two adjacent threaded protrusions, and a gap formed between the ends of the threaded protrusions and the end of the rotating wheel. When the switch door switches between the closed position and the open position, the rotating wheel rotates, and the threaded groove drives the drive end to move, thereby driving the switch door to the closed position or the open position. When the switch door moves to the closed position or the open position, the drive end disengages the threaded groove, the rotating wheel idles relative to the switch door, and the drive end passes through the gap when the rotating wheel rotates. The present invention solves the problem of complex structure of the blanking module opening and closing door structure in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of blanking devices, and in particular to a switch door structure and a blanking device. Background Art

[0002] In existing unloading module solutions with opening and closing doors, the unloading screw and the opening and closing door are usually driven by two motors respectively, and the two parts are coordinated and coordinated by a control system. However, since the above-mentioned solution structure requires two motors, it has many parts, the transmission structure is complex and intertwined, and the overall complexity is complex. In addition, existing solutions generally only meet the needs of unloading small-particle solid seasonings or powdered seasonings. For large-particle materials, the opening and closing door structure is prone to jamming, and it cannot meet the quantitative unloading requirements of large-particle materials (such as soybeans and peanuts).

[0003] There is an existing technical solution that uses a motor to simultaneously drive the screw and the opening and closing door. The opening and closing door is provided with rubber and a boss. The resistance of the rubber and the boss is used to hinder the rotation of the opening and closing door, so that the opening and closing door moves left and right in the axial direction to achieve the effect of opening and closing the material port. However, due to the performance problems of the rubber itself, it is prone to wear and tear, and thus needs to be replaced frequently, affecting the overall user experience of the device. Summary of the Invention

[0004] The main purpose of the present invention is to provide an opening and closing door structure and a blanking device to solve the problem of complex structure of the blanking module opening and closing door structure in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a switch door structure is provided, including: a switch door movably arranged at an opening, the switch door having a closed position blocking the opening and an open position avoiding the opening, and the switch door having a movable driving end; a rotating wheel, the rotating wheel is rotatably arranged, the rotating wheel has a plurality of threaded protrusions, a threaded groove is formed between two adjacent threaded protrusions, and a gap is formed between the end of the threaded protrusion and the end of the rotating wheel. When the switch door switches between the closed position and the open position, the rotating wheel rotates, and the threaded groove drives the driving end to move, so as to drive the switch door to move to the closed position or the open position. When the switch door moves to the closed position or the open position, the driving end disengages from the threaded groove, the rotating wheel idles relative to the switch door, and the driving end passes through the gap when the rotating wheel rotates.

[0006] Furthermore, a step structure is formed at the notch, and the height of the step structure decreases along the extension direction of the thread groove, and a step side surface is formed between the two step surfaces of the step structure. The step side surface extends along the extension direction of the thread groove and docks with the side wall of the thread groove. When the door is switched from a closed position or an open position, the wheel rotates in the opposite direction, and the driving end abuts against the step side surface of the step structure and enters the thread groove along the step side surface to move to the open position or the closed position.

[0007] Furthermore, along the extending direction of the thread groove, the step surface of the step structure is inclined in a direction away from the axis of the runner.

[0008] Furthermore, there are multiple thread grooves, and the thread grooves are arranged in parallel. A gap is formed between the end portions of the two thread protrusions on the side of each thread groove and the rotary wheel, and all the gaps located at the same end of the rotary wheel form an annular groove along the circumference of the rotary wheel. When the switch door moves to the closed position or the open position, the driving end is located in the annular groove.

[0009] Furthermore, the switch door includes: a door body, at least a portion of which is located at the opening and can block or avoid the opening; a positioning pin, which is radially movably arranged on the door body, and has a driving end that can cooperate with the thread groove. When the wheel rotates, the side wall of the thread groove squeezes the positioning pin, and the positioning pin drives the door body to move axially to block or avoid the opening.

[0010] Furthermore, the door body has an elastic arm, the positioning pin is arranged on the elastic arm, and is pressed against the rotating wheel under the action of the elastic arm; and / or the switch door also includes an elastic member and a pressure plate, the pressure plate is connected to the door body, the two ends of the elastic member are respectively in contact with the pressure plate and the positioning pin, and provide elastic force for the positioning pin to press against the rotating wheel; and / or the positioning pin is an elastic member, and is pressed against the rotating wheel under the action of its own elastic force.

[0011] Furthermore, there are multiple positioning pins, and at least some of the positioning pins are arranged at intervals along the circumference of the door body. There are multiple thread grooves, and the number of the thread grooves is not less than the number of the positioning pins.

[0012] Furthermore, the axial ends of the wheel have radially extending ribs, a movement area is formed between the ribs at both ends, the threaded protrusion is arranged in the movement area, the driving end moves in the movement area, and a gap is formed between the end of the threaded protrusion and the rib.

[0013] According to another aspect of the present invention, a feeding device is provided, comprising: a base, the base having a feeding port; a feeding screw, the feeding screw being rotatably arranged in the base and pushing the material to move toward the feeding port; the above-mentioned switching door structure, the switching door of the switching door structure being movably arranged at the feeding port; a driving member, the driving member being drivingly connected to the feeding screw and the rotating wheel of the switching door structure, and driving the feeding screw and the rotating wheel to rotate.

[0014] Furthermore, one end of the blanking screw is connected to the driving member, and the other end of the blanking screw is connected to the driving wheel, and the two rotate synchronously, and the driving member drives the wheel to rotate through the blanking screw.

[0015] Furthermore, the pitch of the thread groove of the rotating wheel is 1 to 10 times the pitch of the blanking screw.

[0016] Furthermore, the base includes a first base body and a second base body, the first base body has a accommodating cavity for accommodating materials, the blades of the discharge screw are located in the first base body, the second base body is docked with the first base body to form an installation cavity, the switch door and the rotary wheel are both arranged in the installation cavity, and a discharge port is provided on the bottom surface of one of the two axial ends of the second base body close to the first base body.

[0017] Furthermore, the switch door structure also includes a stirring member, which is located at the discharge port to stir the material.

[0018] The technical solution of the present invention is applied, by providing a rotating wheel and a switch door, the rotating wheel can cooperate with the drive end of the switch door. Specifically, the spiral thread groove provided on the circumference of the rotating wheel can allow the drive end to extend into. When the drive end is located in the thread groove, the rotation of the rotating wheel can cause the thread protrusion to squeeze the drive end, thereby driving the switch door to move axially and realize opening and closing of the switch door. At the same time, the ends of the thread protrusion do not extend to the axial ends of the rotating wheel, but are clearance-matched with the axial ends of the rotating wheel, thereby forming a gap, which is connected to the thread groove. In this way, when the rotating wheel drives the switch door to move into place, that is, when the switch door reaches the open position or the closed position, the drive end disengages from the thread groove. At this time, the thread protrusion no longer exerts a squeezing effect on the drive end. Subsequently, when the rotating wheel continues to rotate, the presence of the gap prevents the drive end from interfering with the thread protrusion, so that the rotating wheel does not drive the switch door to move, the rotating wheel idles, and the switch door remains in place. The above setting method ensures the normal operation of various components through the coordination between the rotating wheel and the door opening and closing method, ensures the overall door opening and closing effect of the mechanism, reduces the number of parts, simplifies the complexity of the structure, and at the same time, the coordination between the parts is stable and reliable, with little wear and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 A schematic structural diagram of a material discharge device with a switch door structure in a first embodiment of the present invention is shown;

[0021] Figure 2 Shown Figure 1Exploded diagram;

[0022] Figure 3 Shown Figure 1 A schematic diagram of the structure of the switch door structure when the door is closed;

[0023] Figure 4 Shown Figure 1 Schematic diagram of the structure of the switch door structure when the door is open;

[0024] Figure 5 Shown Figure 1 Schematic diagram of the structure of the switch door and the rotating wheel;

[0025] Figure 6 Shown Figure 5 sectional view of

[0026] Figure 7 Shown Figure 5 A schematic diagram of the structure in which the wheel rotates in one direction when the center positioning pin cooperates with the wheel;

[0027] Figure 8 Shown Figure 5 A schematic diagram of the structure in which the runner rotates in the other direction when the center positioning pin cooperates with the runner;

[0028] Figure 9 Shown Figure 1 A schematic structural diagram of the second seat body in FIG.

[0029] Figure 10 Shown Figure 1 Schematic diagram of the structure of the blanking screw;

[0030] Figure 11 FIG2 is a structural diagram of the switch door and the rotating wheel part of the switch door structure in the second embodiment of the present invention;

[0031] Figure 12 FIG1 is a structural diagram of the switch door and the rotating wheel part of the switch door structure in the third embodiment of the present invention.

[0032] The above drawings include the following reference numerals:

[0033] 10. Base; 11. Feeding port; 12. First base body; 13. Second base body; 20. Feeding screw; 30. Open / close door; 31. Driving end; 32. Door body; 321. Elastic arm; 33. Positioning pin; 34. Elastic member; 35. Pressing plate; 40. Rotating wheel; 41. Threaded protrusion; 42. Threaded groove; 43. Notch; 44. Step structure; 45. Side rib; 50. Agitating member; 60. Storage tank; 70. Drive shaft. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0037] In order to solve the problem of complex structure of the opening and closing door structure of the blanking module in the prior art, the present invention provides an opening and closing door structure and a blanking device.

[0038] Example 1

[0039] like Figures 1 to 10 The shown structure of a switch door includes a switch door 30 and a rotating wheel 40 movably arranged at an opening. The switch door 30 has a closed position for blocking the opening and an open position for avoiding the opening. The switch door 30 has a movable driving end 31; the rotating wheel 40 is rotatably arranged, and the rotating wheel 40 has a plurality of threaded protrusions 41, a thread groove 42 is formed between two adjacent threaded protrusions 41, and a gap 43 is formed between the end of the threaded protrusion 41 and the end of the rotating wheel 40. When the switch door 30 switches between the closed position and the open position, the rotating wheel 40 rotates, and the thread groove 42 drives the driving end 31 to move, so as to drive the switch door 30 to move to the closed position or the open position. When the switch door 30 moves to the closed position or the open position, the driving end 31 disengages from the thread groove 42, and the rotating wheel 40 idles relative to the switch door 30. When the rotating wheel 40 rotates, the driving end 31 passes through the gap 43.

[0040] This embodiment is provided with a rotating wheel 40 and a switch door 30. The rotating wheel 40 can cooperate with the driving end 31 of the switch door 30. Specifically, the spiral thread groove 42 provided on the circumference of the rotating wheel 40 can allow the driving end 31 to extend into. When the driving end 31 is located in the thread groove 42, the rotation of the rotating wheel 40 can cause the thread protrusion 41 to squeeze the driving end 31, thereby driving the switch door 30 to move axially and realize the opening and closing of the switch door 30. At the same time, the ends of the thread protrusion 41 do not extend to the axial ends of the rotating wheel 40, but are clearance-matched with the axial ends of the rotating wheel 40, thereby forming a gap 43, which is connected to the thread groove 42. In this way, when the rotating wheel 40 drives the switch door 30 to move into place, that is, when the switch door 30 reaches the open position or the closed position, Figure 3 and Figure 4 In the illustrated state, the driving end 31 is disengaged from the thread groove 42. At this point, the threaded protrusion 41 no longer exerts a compressive force on the driving end 31. Subsequently, as the wheel 40 continues to rotate, the presence of the notch 43 prevents the driving end 31 from interfering with the threaded protrusion 41. Consequently, the wheel 40 does not drive the door 30, resulting in idle rotation and the door 30 remaining in its position. This arrangement, through the coordination between the wheel 40 and the door 30, ensures the proper functioning of all components and the overall door opening and closing performance of the mechanism, reducing the number of parts and simplifying the structural complexity. Furthermore, the coordination between the components is stable and reliable, resulting in minimal wear and a long service life.

[0041] This embodiment is described by taking the application of the switch door structure to a material discharge device as an example, and accordingly, the opening is the material discharge port 11. Of course, the switch door structure can also be applied to other devices and equipment as needed.

[0042] Another aspect of this embodiment provides a feeding device comprising a base 10, a feeding screw 20, the aforementioned switch door structure, and a drive element. The base 10 has a feeding opening 11, which is referred to as the opening in the switch door structure. The feeding screw 20 is rotatably disposed within the base 10 and propels the material toward the feeding opening 11. The switch door 30 is movably disposed at the feeding opening 11 of the base 10 and has a closed position that blocks the feeding opening 11 and an open position that avoids the feeding opening 11. The rotating wheel 40 is rotatably disposed within the base 10. The drive element is rotatably connected to both the feeding screw 20 and the rotating wheel 40, and drives the feeding screw 20 and the rotating wheel 40 to rotate.

[0043] Based on the aforementioned setting method between the rotating wheel 40 and the switch door 30, this embodiment also adopts a matching method in which the unloading screw 20 and the rotating wheel 40 are both connected to the driving member, so that the rotating wheel 40 and the unloading screw 20 can respectively realize the opening and closing of the unloading port 11 and the pushing of the material under the driving action of the same driving member, that is, only one driving member can be set, and the driving member drives the unloading screw 20 and the rotating wheel 40 to rotate at the same time. When the unloading screw 20 rotates, it can normally push the material to the unloading port 11 for unloading, and when the rotating wheel 40 rotates, it can drive the switch door 30 to move, thereby realizing the opening and closing of the unloading port 11. Due to the above-mentioned matching method between the rotating wheel 40 and the switch door 30, the rotating wheel 40 can idle after the switch door 30 moves into place, thereby preventing jamming, over-positioning, etc., and ensuring the normal operation of the switch door 30. The above-mentioned setting method can realize the unloading of the unloading screw 20 and the opening and closing of the switch door 30 at the same time through a driving component, thereby further reducing the number of parts and simplifying the complexity of the structure. The normal operation of each component is ensured by the coordination between the rotating wheel 40 and the switch door 30, thereby ensuring the unloading effect of the entire mechanism.

[0044] It should be noted that the rotation of the driving end 31 relative to the wheel 40 in this embodiment means that the driving end 31 rotates circumferentially when the wheel 40 is a stationary reference object, and the wheel 40 rotates circumferentially when the earth is used as a reference object. The driving end 31 and the switch door 30 do not rotate circumferentially, but move axially driven by the wheel 40.

[0045] like Figure 7 and Figure 8As shown, in this embodiment, considering that the switch door 30 needs to move in the opposite direction after moving to the closed position or the open position, a step structure 44 is provided at the notch 43. The height of the step structure 44 is arranged to decrease along the extension direction of the thread groove 42, or more precisely, along the circumference of the rotating wheel 40 and along the extension direction of the thread groove 42. In other words, the upper and lower step surfaces of the step structure 44 are arranged in sequence along the direction in which the rotating wheel 40 continues to rotate after driving the switch door 30 to the open position or the closed position. Thus, as the rotating wheel 40 continues to rotate, the driving end 31 can enter the upper step surface after exiting the thread groove 42, and then pass through the step to reach the lower step surface, thereby avoiding interference with the rotating wheel 40 and ensuring that the rotating wheel 40 can continue to rotate. When the wheel 40 rotates in the opposite direction, the driving end 31 will move from the lower step surface to the upper step surface. At this time, due to the height difference between the two step surfaces, the driving end 31 cannot cross the step, but will abut the step side surface between the two step surfaces. Since the step side surface extends along the extension direction of the thread groove 42 and docks with the side wall of the thread groove 42, therefore, when the driving end 31 abuts against the step side surface, as the wheel 40 rotates in the opposite direction, the driving end 31 moves axially under the guidance of the step side surface and gradually approaches the thread groove 42 until it re-enters the thread groove 42 and moves to another position under the squeezing action of the side wall of the thread groove 42. In this way, as the wheel 40 rotates forward and reverse, the switch door 30 can be moved from the closed position to the open position, or from the open position to the closed position, thereby realizing the two-way movement of the switch door 30 and the position switching of the switch door 30 between the closed position and the open position, thereby realizing the opening and closing of the discharge port 11.

[0046] In this embodiment, taking into account the situation that the diameter of part of the runner 40 gradually decreases due to the height reduction of the step structure 44 in one axial direction, which affects the structure, the step surface of the step structure 44 is tilted in this embodiment, that is, the diameter of each part of the step surface is not consistent, but varies. Specifically, along the extension direction of the thread groove 42, the step surface of the step structure 44 is tilted in the direction away from the axis of the runner 40, and at least one layer of the step surface adopts this setting method. Taking the upper step surface as an example, when the driving end 31 passes the step structure 44 from the highest to the lowest, the driving end 31 moves relative to the upper step surface. The diameter of the upper step surface gradually increases, thereby gradually pushing the driving end 31 away from the center of the rotating wheel 40 until the driving end 31 is at the edge of the upper step surface. Then, the rotation of the rotating wheel 40 causes the driving end 31 to pass the step. Due to the height difference of the step, the driving end 31 moves directly toward the center of the rotating wheel 40, and the driving end 31 switches from the upper step surface to the lower step surface. Then, as the rotating wheel 40 rotates, the driving end 31 moves on the lower step surface until it moves back from the lower step surface to the upper step surface. This cycle repeats, so that after the rotating wheel 40 drives the door 30 to the desired position, the rotating wheel 40 can continue to rotate without affecting the position of the door 30. When the rotating wheel 40 rotates in the opposite direction, due to the height difference between the upper step surface and the lower step surface, the driving end 31 can abut against the side of the step, and the driving end 31 returns to the thread groove 42 to switch positions.

[0047] Of course, in addition to using the above-mentioned step structure 44 to achieve the switching of the position of the switch door 30 and the avoidance of the rotating wheel 40 and the switch door 30, other structural forms can also be used, such as using a separate toggle member to toggle the switch door 30 when the switch door 30 switches its position, so that the driving end 31 re-engages with the threaded groove 42, etc.

[0048] It should be noted that the height of the above-mentioned high and low levels refers to the height of the step structure 44 in the conventional sense. For the cylindrical impeller 40, the high-level step surface is the surface that is farther away from the central axis of the impeller 40 than the low-level step surface, and the step side surface is the transition surface between the high-level step surface and the low-level step surface, and the step side surface extends roughly along the radial direction of the impeller 40.

[0049] Optionally, the number of thread grooves 42 can be set as needed, and one or more thread grooves 42 can be set. In this embodiment, there are four driving ends 31, so four or eight thread grooves 42 are set, and each thread groove 42 has the same rotation direction and is arranged in parallel. A gap 43 is formed between the end of the two thread protrusions 41 on the side of each thread groove 42 and the end of the rotating wheel 40, and all the gaps 43 located at the same end of the rotating wheel 40 form an annular groove along the circumference of the rotating wheel 40. In this way, the formed annular groove can avoid the driving end 31, that is, when the switch door 30 moves to the closed position or the open position, the driving end 31 is switched from the thread groove 42 to the annular groove, and moves in the annular groove when the rotating wheel 40 rotates, thereby realizing relative rotation between the rotating wheel 40 and the switch door 30, and also realizing idling of the rotating wheel 40.

[0050] Correspondingly, since there are multiple notches 43, there are also multiple step structures 44. Each notch 43 is provided with a step structure 44. The specific form of each step structure 44 is the same, and all adopt the above-mentioned arrangement. Thus, when the door 30 moves into position, as the wheel 40 rotates, the drive end 31 moves between the step structures 44 in the annular groove, and a "clicking" sound is produced between the drive end 31 and the step structures 44, which can be used to indicate that the door 30 has rotated into position. When the wheel 40 rotates in the opposite direction, the drive end 31 can cooperate with the nearest step structure 44 to achieve the effect of quickly switching to the other position, ensuring the continuity of the movement.

[0051] It should be noted that the structures of the two axial ends of the rotating wheel 40 are the same, and both adopt the above-mentioned setting method, so as to realize bidirectional switching between the two positions of the opening and closing door 30.

[0052] like Figures 2 to 6 As shown, in this embodiment, the switch door 30 includes a door body 32 and a positioning pin 33, wherein the door body 32 is the main part of the switch door 30, and at least a portion of the door body 32 is located at the discharge port 11 and can block or avoid the discharge port 11, thereby playing the role of opening and closing the discharge port 11. The positioning pin 33 is radially movably provided on the door body 32. The positioning pin 33 is a component that cooperates with the rotating wheel 40. One end of the positioning pin 33 can extend into the spiral groove or the annular groove, which is the driving end 31 that cooperates with the thread groove 42. When the rotating wheel 40 rotates, the side wall of the thread groove 42 squeezes the positioning pin 33, and the positioning pin 33 and the door body 32 move axially synchronously. Therefore, the positioning pin 33 can drive the door body 32 to move axially under the pressure of the thread groove 42, so that the door body 32 avoids opening or blocks and closes the discharge port 11.

[0053] The door body 32 of this embodiment is in the shape of a sleeve, with a hollow structure in the middle. The runner 40 is located in the hollow structure of the door body 32. The radial inner end of the positioning pin 33 serves as the driving end 31, thereby cooperating with the thread groove 42 on the outer peripheral side of the runner 40. The door body 32 extends axially for a certain length. One of its axial ends, the end close to the blade of the blanking screw 20, serves to cooperate with the blanking port 11, while the other part serves to install the positioning pin 33 to achieve cooperation with the runner 40. Of course, the specific arrangement of the door body 32 is not limited to the above-mentioned arrangement. The runner 40 can also be sleeved on the outside of the door body 32, with the radial outer end of the positioning pin 33 serving as the driving end 31 to cooperate with the runner 40. In this case, structures such as the thread groove 42 can be provided on the inner peripheral side of the runner 40.

[0054] In order to facilitate understanding of the cooperation between the positioning pin 33 and the rotating wheel 40, this embodiment is as follows: Figure 7 and Figure 8 The two states are used as an example for specific description. It should be noted that the movement of the two components below refers to the relative movement between the two components.

[0055] exist Figure 7 In the embodiment, the wheel 40 rotates in the direction of the arrow. At this time, the positioning pin 33 moves toward the left end of the wheel 40 until it reaches the leftmost end and abuts against the retaining edge 45 at the left end. At this time, the positioning pin 33 switches from the thread groove 42 to the annular groove, and as the wheel 40 continues to rotate, the positioning pin 33 rotates circumferentially in the annular groove, thereby passing through each notch 43 and the step structure 44 at each notch 43.

[0056] exist Figure 8 When the wheel 40 rotates in the direction of the arrow, that is, in accordance with Figure 7 When the locating pin 33 rotates in the opposite direction, the driving end 31 of the locating pin 33 abuts against a step structure 44 at the left end and returns to the thread groove 42 along the step structure 44, thereby moving toward the right end along the thread groove 42.

[0057] like Figure 2 As shown, in this embodiment, the switch door 30 also includes an elastic member 34 and a pressure plate 35, wherein the pressure plate 35 is connected to the door body 32, and the two ends of the elastic member 34 are respectively in contact with the pressure plate 35 and the positioning pin 33. In this way, the elastic member 34 provides the positioning pin 33 with an elastic force to press against the rotating wheel 40. On the one hand, the positioning pin 33 can move axially, so that it can cooperate with step surfaces of different heights to prevent jamming. On the other hand, the positioning pin 33 can always maintain a pressing relationship with the side of the rotating wheel 40, so that the positioning pin 33 and the step surface of the step structure 44 are always tightly matched, avoiding separation between the positioning pin 33 and the rotating wheel 40, and ensuring stable cooperation between the two.

[0058] As mentioned above, the driving end 31 of this embodiment is provided with multiple, more specifically, four, and therefore the positioning pins 33 of this embodiment are also provided with multiple, more specifically, four, and the four positioning pins 33 are arranged at equal intervals along the circumference of the door body 32. At the same time, since there are multiple thread grooves 42, in order to ensure that each positioning pin 33 can be matched with a corresponding thread groove 42, it is preferred that the number of thread grooves 42 is not less than the number of positioning pins 33. In this way, each positioning pin 33 can be located in a thread groove 42, thereby ensuring that each positioning pin 33 can function. Of course, the specific number and matching method of the positioning pins 33 and the thread grooves 42 can be adjusted accordingly as needed.

[0059] In this embodiment, the driving member is a driving motor. Although the driving member, the blanking screw 20 and the rotating wheel 40 are driven and matched at the same time, they are not directly connected. Instead, the driving member is connected to one end of the blanking screw 20, and the other end of the blanking screw 20 can be connected to the rotating wheel 40 through a structure such as a spline. Figure 10 As shown, in this way, when the driving member drives the blanking screw 20 to rotate, it can also drive the rotating wheel 40 to rotate, so that the blanking screw 20 and the rotating wheel 40 rotate synchronously, and the driving member drives the rotating wheel 40 to rotate through the blanking screw 20. Of course, the specific coordination between the driving member, the blanking screw 20 and the rotating wheel 40 can also be adjusted according to needs.

[0060] To ensure smooth rotation between the blanking screw 20 and the rotating wheel 40, in this embodiment, a transmission shaft 70 is provided at one end of the blanking screw 20 that mates with the driver. The transmission shaft 70 mates with the blanking screw 20 through a spline or other structure, and the driver drives the blanking screw 20 to rotate via the transmission shaft 70. A bearing is provided between the rotating wheel 40 and the base 10 to ensure smooth rotation of the rotating wheel 40 and reduce friction between the rotating wheel 40 and the base 10.

[0061] Preferably, the pitch of the thread groove 42 is 1 to 10 times the pitch of the discharge screw 20, and more preferably 1 to 3 times, so that the door opening speed is faster than the material discharge speed, preventing the material from getting stuck, and is suitable for quantitative discharge of large particle materials such as soybeans.

[0062] In this embodiment, the rotating wheel 40 is generally sleeve-shaped, with its outer peripheral side surface being the portion that engages with the switch door 30. The threaded protrusion 41 is disposed on the outer peripheral side surface. Simultaneously, radially outwardly extending flanges 45 are disposed at both axial ends of the rotating wheel 40. The flanges 45 serve as the ends of the rotating shaft. Along the axial direction of the rotating wheel 40, a movement region that is recessed toward the center of the rotating wheel 40 is formed between the flanges 45 at both ends. The threaded protrusion 41 and other structures are disposed within the movement region, and a gap 43 is formed between the ends of the threaded protrusion 41 and the flanges 45. The driving end 31 also moves within the movement region. Thus, the flanges 45 limit the range of motion of the driving end 31. When the switch door 30 is moved into position, the side surface of the driving end 31 can abut against the flanges 45, thereby preventing the driving end 31 from dislodging from the rotating wheel 40 and ensuring a secure fit between the driving end 31 and the rotating wheel 40.

[0063] In this embodiment, the base 10 includes a first base body 12 and a second base body 13. The first base body 12 has a accommodating cavity for accommodating materials. The blades of the feeding screw 20 are located in the first base body 12. A feeding port is provided on the top of the first base body 12, which can be connected to a container such as a storage tank 60 to store materials. The material in the storage tank 60 enters the accommodating cavity under the action of gravity and moves into the second base body 13 under the push of the blades of the feeding screw 20. The second base body 13 is docked with one end of the first base body 12 to form an installation cavity. The installation cavity serves as an installation component. The switch door 30 and the rotating wheel 40 are both arranged in the installation cavity. A feeding port 11 is provided on the bottom surface of one of the two axial ends of the second base body 13, which is close to the first base body 12. Figure 9 As shown, the axial movement of the door 30 can block or avoid the discharge port 11, allowing it to be closed and opened. When the discharge port 11 is open, the discharge screw 20 pushes the material from the receiving chamber into the installation chamber, where it can be discharged from the discharge port 11. A rear cover or other component can be installed at the end of the first base 12 away from the second base 13 to allow the transmission shaft 70 to pass through and connect to the drive element.

[0064] Optionally, for large particle materials with poor fluidity, a stirring member 50 can be added to the discharge port 11 to stir the discharge port 11, thereby ensuring that the material can fall smoothly from the discharge port 11 and avoid getting stuck at the discharge port 11.

[0065] Example 2

[0066] The difference from the first embodiment is that the structure of the switch door 30 is different.

[0067] like Figure 11As shown, in this embodiment, the elastic member 34 and the pressure plate 35 are not provided. Instead, an elastic arm 321 is provided on the door body 32. Specifically, a radially extending opening is provided on the side of the door body 32, and the elastic arm 321 is provided at the opening. One end of the elastic arm 321 is connected to the side of the opening, and the other end is a free end. In this way, the elastic arm 321 has a certain elasticity due to its own structure. The positioning pin 33 is provided at the free end of the elastic arm 321. In this way, the positioning pin 33 can be pressed against the rotating wheel 40 under the action of the elastic arm 321, achieving basically the same effect as the elastic member 34 and pressure plate 35 in the first embodiment. Moreover, the structure of this embodiment is simpler and does not require the provision of additional components.

[0068] Example 3

[0069] The difference from the second embodiment is that the structure of the switch door 30 is different.

[0070] like Figure 12 As shown, in this embodiment, the positioning pin 33 is fixedly mounted on the door body 32. However, in this embodiment, the positioning pin 33 itself is an elastic component, at least a portion of which has a certain degree of elasticity, such as rubber or metal springs. Thus, when the positioning pin 33 is installed on the rotating wheel 40, a portion of the positioning pin 33 itself is pre-compressed. This ensures that the positioning pin 33 always has a tendency to extend along its own axial direction. As a result, the positioning pin 33, under the action of its own elastic force, always abuts against the rotating wheel 40, ensuring a stable fit with the rotating wheel 40. In this embodiment, the pressure plate 35 can be retained. The pressure plate 35 can hold the positioning pin 33 in place on the door body 32 to prevent it from falling off the door body 32.

[0071] It should be noted that, in the above three embodiments, only one of the three specific ways of tightly fitting the positioning pin 33 and the rotating wheel 40 can be provided as needed, or multiple ways can be adopted at the same time, and they are not mutually exclusive.

[0072] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0073] 1. Solve the problem of complex structure of the opening and closing door structure of the blanking module in the existing technology;

[0074] 2. Reduce the number of parts and simplify the complexity of the structure;

[0075] 3. The cooperation between the runner and the switch door realizes the opening and closing of the switch door, ensuring the overall unloading effect of the mechanism;

[0076] 4. Prevent materials from getting stuck and can be used for quantitative feeding of large particle materials such as soybeans.

[0077] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0078] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0079] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0080] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A door opening and closing structure, characterized in that: include: A switch door (30) movably arranged at the opening, the switch door (30) having a closed position for shielding the opening and an open position for avoiding the opening, and the switch door (30) having a movable driving end (31); A rotating wheel (40) is rotatably arranged, and the rotating wheel (40) has a plurality of thread protrusions (41), a thread groove (42) is formed between two adjacent thread protrusions (41), and a gap (43) is formed between the end of the thread protrusion (41) and the end of the rotating wheel (40). When the switch door (30) switches between the closed position and the open position, the rotating wheel (40) rotates, and the thread groove (42) drives the driving end (31) to move, so as to drive the switch door (30) to move to the closed position or the open position. When the switch door (30) moves to the closed position or the open position, the driving end (31) disengages from the thread groove (42), and the rotating wheel (40) idles relative to the switch door (30). When the rotating wheel (40) rotates, the driving end (31) passes through the gap (43).

2. The door opening and closing structure according to claim 1, characterized in that: A step structure (44) is formed at the notch (43), and the height of the step structure (44) decreases along the extension direction of the thread groove (42). A step side surface is formed between the two step surfaces of the step structure (44), and the step side surface extends along the extension direction of the thread groove (42) and docks with the side wall of the thread groove (42). When the switch door (30) is switched from the closed position or the open position, the wheel (40) rotates in the opposite direction, and the driving end (31) abuts against the step side surface of the step structure (44) and enters the thread groove (42) along the step side surface to move to the open position or the closed position.

3. The door opening and closing structure according to claim 2, characterized in that: Along the extension direction of the thread groove (42), the step surface of the step structure (44) is inclined in a direction away from the axis of the rotating wheel (40).

4. The door opening and closing structure according to claim 1, characterized in that: There are a plurality of thread grooves (42), and each of the thread grooves (42) is arranged in parallel. A notch (43) is formed between the ends of the two thread protrusions (41) on the side of each thread groove (42) and the rotating wheel (40), and all the notches (43) located at the same end of the rotating wheel (40) form an annular groove along the circumference of the rotating wheel (40). When the switch door (30) moves to the closed position or the open position, the driving end (31) is located in the annular groove.

5. The door opening and closing structure according to claim 1, characterized in that: The switch door (30) comprises: a door body (32), at least a portion of which is located at the opening and is capable of shielding or avoiding the opening; A positioning pin (33), the positioning pin (33) is radially movably provided on the door body (32), the positioning pin (33) has the driving end (31) capable of cooperating with the thread groove (42), when the rotating wheel (40) rotates, the side wall of the thread groove (42) squeezes the positioning pin (33), and the positioning pin (33) drives the door body (32) to move axially to cover or avoid the opening.

6. The door opening and closing structure according to claim 5, characterized in that: The door body (32) has an elastic arm (321), the positioning pin (33) is arranged on the elastic arm (321), and is pressed against the rotating wheel (40) under the action of the elastic arm (321); and / or The switch door (30) further comprises an elastic member (34) and a pressure plate (35), wherein the pressure plate (35) is connected to the door body (32), and both ends of the elastic member (34) respectively abut against the pressure plate (35) and the positioning pin (33), and provide an elastic force for the positioning pin (33) to abut against the rotating wheel (40); and / or The positioning pin (33) is an elastic component and presses against the rotating wheel (40) under the action of its own elastic force.

7. The door opening and closing structure according to claim 5, characterized in that: There are multiple positioning pins (33), and at least some of the positioning pins (33) are arranged at intervals along the circumference of the door body (32); there are multiple thread grooves (42), and the number of the thread grooves (42) is not less than the number of the positioning pins (33).

8. The switch door structure according to any one of claims 1 to 7, characterized in that: The rotating wheel (40) has radially extending ribs (45) at both axial ends, and a motion region is formed between the ribs (45) at both ends. The threaded protrusion (41) is arranged in the motion region, and the driving end (31) moves in the motion region. The notch (43) is formed between the end of the threaded protrusion (41) and the rib (45).

9. A blanking device, characterized in that: include: A base (10), wherein the base (10) has a feed opening (11); a material discharge screw (20), the material discharge screw (20) being rotatably disposed in the base (10) and pushing the material toward the material discharge port (11); The switch door structure according to any one of claims 1 to 8, wherein the switch door (30) of the switch door structure is movably arranged at the discharge port (11); A driving member is connected to both the blanking screw (20) and the rotating wheel (40) of the opening and closing door structure, and drives the blanking screw (20) and the rotating wheel (40) to rotate.

10. The blanking device according to claim 9, characterized in that: One end of the blanking screw (20) is drive-connected to the driving member, and the other end of the blanking screw (20) is drive-connected to the rotating wheel (40), and the two rotate synchronously. The driving member drives the rotating wheel (40) to rotate through the blanking screw (20).

11. The blanking device according to claim 9, characterized in that: The pitch of the thread groove (42) of the rotating wheel (40) is 1 to 10 times the pitch of the blanking screw (20).

12. The blanking device according to claim 9, characterized in that: The base (10) includes a first base body (12) and a second base body (13), the first base body (12) has a accommodating cavity for accommodating materials, the blades of the discharge screw (20) are located in the first base body (12), the second base body (13) is docked with the first base body (12) to form an installation cavity, the switch door (30) and the rotating wheel (40) are both arranged in the installation cavity, and the discharge port (11) is provided on the bottom surface of one end of the axial ends of the second base body (13) close to the first base body (12).

13. The blanking device according to claim 9, characterized in that: The switch door structure further comprises a stirring member (50), and the stirring member (50) is located at the discharge port (11) to stir the material.

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