A rice production and packaging ration feeder

Abstract

The application is suitable for the field of rice processing, and provides a quantitative feeding device for rice production and packaging, which comprises a support frame, a discharge hopper for conveying rice is fixed on the support frame, and a fixing plate is also fixed on the support frame; a conveying mechanism in communication with the discharge hopper is arranged on the support frame, a regulating mechanism connected with the conveying mechanism is also arranged on the support frame, the regulating mechanism can control the discharging amount of the conveying mechanism, annular grooves and arc grooves in communication with each other and arranged symmetrically are formed in the regulating mechanism; an elastic supporting assembly matched with the annular grooves and the arc grooves is arranged on the support frame, a driving mechanism for driving the elastic supporting assembly to move in the horizontal direction is also arranged on the support frame, a guide assembly connected with the elastic supporting assembly is arranged on the fixing plate, and the guide assembly can control the cooperation and separation of the elastic supporting assembly with the arc grooves and the arc grooves.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of rice processing, and particularly relates to a quantitative feeding device for rice production and packaging. BACKGROUND

[0002] In order to facilitate the transportation and sale of rice, it is necessary to quantitatively package the rice. Currently, there are two ways of rice packaging. One is to manually weigh and package the rice by manual operation. This way is low in efficiency and may face problems such as operation failure. The other is to quantitatively package by machine.

[0003] Machine packaging is to open the feeding door to start feeding when the quantitative packaging scale enters the automatic operation state, and to close the feeding door when the weight of the material reaches the final set value. However, this way also needs the intervention of the packaging scale. Since the scale may face the problem of inaccurate weighing after long-term use, and needs to be stopped for operation when adjusting the discharge amount, the production efficiency is reduced. Therefore, a feeding device without stoppage operation is proposed. SUMMARY

[0004] The present application provides a quantitative feeding device for rice production and packaging, aiming to solve the problem of needing to stop the machine when changing the conveying amount of rice.

[0005] The present application is implemented as follows. A quantitative feeding device for rice production and packaging comprises:

[0006] A support frame is fixed with a discharge hopper for conveying rice, and is also fixed with fixed plates arranged symmetrically.

[0007] A conveying mechanism for intermittently conveying rice and connected with the discharge hopper is arranged on the support frame. A control mechanism connected with the conveying mechanism is also arranged on the support frame. The control mechanism can control the discharge amount of the conveying mechanism. An annular groove and an arc-shaped groove are arranged on the control mechanism and are connected with each other and arranged symmetrically.

[0008] An elastic support assembly matched with the annular groove and the arc-shaped groove is arranged on the support frame. A driving mechanism for driving the elastic support assembly to move in the horizontal direction is also arranged on the support frame. A guide assembly connected with the elastic support assembly is arranged on the fixed plate. The guide assembly can control the cooperation and separation of the elastic support assembly with the annular groove and the arc-shaped groove.

[0009] Further, the conveying mechanism comprises a guide pipe fixedly installed in the lower hopper and penetrating the lower hopper towards one end of the support frame, a first discharging hole is formed in the guide pipe, a lower discharging assembly connected with the guide pipe is arranged on the support frame, and a second discharging hole is formed in the lower discharging assembly and connected with the regulating mechanism.

[0010] Further, the lower discharging assembly comprises a lower discharging pipe movably installed in the guide pipe, a limiting ring is fixedly arranged on the lower discharging pipe, a first spring abutting against the limiting ring is arranged on the lower discharging pipe and the guide pipe, a limiting wheel connected with the regulating mechanism is fixedly arranged on the limiting ring, and the second discharging hole is formed in the lower discharging pipe.

[0011] Further, the regulating mechanism comprises a first motor fixedly installed on the support frame, driving rods symmetrically arranged and rotatably installed on the support frame, a first limiting slot formed in the driving rods, a limiting assembly connected with the limiting wheel and the first limiting slot is arranged on the support frame, the annular slot and the arc-shaped slot are formed in the limiting assembly, and one of the driving rods is connected with the output shaft of the first motor.

[0012] Further, the limiting assembly comprises a first rotating rod rotatably installed in the driving rod, a first limiting rod engaged with the first limiting slot is formed in the first rotating rod, the first cam, the second cam and the third cam abutting against the limiting wheel are fixedly arranged on the first rotating rod at equal intervals, and the annular slot and the arc-shaped slot are formed in the first rotating rod.

[0013] Further, the elastic supporting assembly comprises a supporting sleeve fixedly installed on the driving mechanism, a supporting rod movably installed in the supporting sleeve and intermittently engaged with the annular slot and the arc-shaped slot, a second spring fixedly arranged in the supporting sleeve and abutting against the supporting rod, a sliding groove is formed in the supporting sleeve, and the supporting rod is connected with the guiding assembly.

[0014] Further, the driving mechanism comprises a second motor fixedly installed on the support frame, a second rotating rod rotatably installed on the support frame and connected with the output shaft of the second motor, and a guiding assembly arranged on the support frame and connected with the second rotating rod, and the guiding assembly is fixedly connected with the supporting sleeve.

[0015] Further, the guiding assembly comprises a guiding rod fixedly installed on the support frame, a second limiting rod fixedly installed on the guiding rod, and an engagement structure arranged on the support frame and connected with the guiding rod and the second rotating rod, a second limiting slot engaged with the second limiting rod is formed in the engagement structure, and the engagement structure is fixedly connected with the supporting sleeve.

[0016] Further, the clamping structure comprises a movable sleeve movably mounted on the guide rod, a threaded groove formed on the second rotating rod, and a fixed rod fixedly mounted on the movable sleeve and clamped with the threaded groove, and the second limiting groove is formed on the movable sleeve and fixedly connected with the supporting sleeve.

[0017] Further, the guide assembly comprises a special-shaped groove formed on the fixed plate, a hinge rod hingedly connected to the fixed plate, a limiting block fixed to the fixed plate and abutting against the hinge rod, and a protruding rod fixed to the supporting rod and clamped with the special-shaped groove and the sliding groove.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The application can adjust the packaging amount of rice in bag packaging. In order to facilitate storage and sales, rice packaging has different specifications. The control mechanism can be used to adjust the discharging amount of the conveying mechanism each time to meet the requirements. In order to increase the production efficiency, the elastic supporting assembly and the guide assembly are matched. When the driving mechanism works, the elastic supporting assembly drives the control mechanism to move, which can ensure that the discharging amount is adjusted after the conveying mechanism discharges once, without the need to close the machine for adjustment, greatly improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0022] Figure 1 is a structural schematic diagram provided by the present application.

[0023] Figure 2 is Figure 1 is an enlarged schematic diagram of the structure at A in

[0024] Figure 3 is a structural schematic diagram provided by the present application from another angle.

[0025] Figure 4 is a half-section structural schematic diagram provided by the present application.

[0026] Figure 5 is a structural schematic diagram of the conveying mechanism provided by the present application.

[0027] Figure 6 is the explosion structure schematic view of the conveying mechanism, part of the regulation mechanism provided by the application.

[0028] Figure 7 is the connection relationship schematic view of the part of the regulation mechanism, part of the driving mechanism, and the elastic support assembly provided by the application.

[0029] Figure 8 is the connection relationship schematic view of the part of the regulation mechanism and the elastic support assembly provided by the application.

[0030] Figure 9 is the part of the explosion structure schematic view provided by the application.

[0031] Figure 10 is the structure schematic view of the part of the guide assembly provided by the application.

[0032] Reference signs:

[0033] 1, support frame; 2, lower hopper; 3, material guide pipe; 4, first discharge hole; 5, lower material pipe; 6, second discharge hole; 7, limiting ring; 8, first spring; 9, limiting wheel; 10, transmission rod; 11, first limiting groove; 12, first rotating rod; 13, first limiting rod; 14, annular groove; 15, arc-shaped groove; 16, first cam; 17, second cam; 18, third cam; 19, first motor; 20, guide rod; 21, second limiting rod; 22, movable sleeve; 23, second limiting groove; 24, fixed rod; 25, second rotating rod; 26, threaded groove; 27, second motor; 28, support sleeve; 29, support rod; 30, protruding rod; 31, second spring; 32, fixed plate; 33, special-shaped groove; 34, hinged rod; 35, limiting block. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0035] In order to effectively illustrate the embodiments of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.

[0036] The present application provides a quantitative feeding device for rice production and packaging to solve the problem of needing to stop when the conveying amount of rice changes.

[0037] Referring to Figures 1 to 5 The quantitative feeding device for rice production and packaging provided by the embodiments of the present application comprises:

[0038] Support frame 1, the support frame 1 is fixed with a discharge hopper 2 for conveying rice, the support frame 1 is also fixed with a fixed plate 32 arranged symmetrically;

[0039] Please refer to Figure 1 、 Figures 4-6 , the support frame 1 is provided with a conveying mechanism for intermittent conveying of rice and connected with the lower hopper 2, the conveying mechanism comprises a guide pipe 3 fixedly installed in the lower hopper 2 and penetrating the lower hopper 2 towards one end of the support frame 1, the guide pipe 3 is provided with a first discharge hole 4, the support frame 1 is provided with a discharging assembly connected with the guide pipe 3, the discharging assembly is provided with a second discharge hole 6 and connected with the regulating mechanism, wherein the discharging assembly comprises a discharging pipe 5 movably installed in the guide pipe 3, the discharging pipe 5 is fixed with a limiting ring 7, the discharging pipe 5 and the guide pipe 3 are provided with a spring 8 abutting against the limiting ring 7, the limiting ring 7 is fixed with a limiting wheel 9 connected with the regulating mechanism, the discharging pipe 5 is provided with the second discharge hole 6.

[0040] It should be noted that when the quantitative packaging is needed, the rice can be bagged with the packaging bag, in the initial state, under the action of the regulating mechanism, the discharging pipe 5 is located at the innermost end of the guide pipe 3, the first spring 8 is in a compressed state, at this time, the first discharge hole 4 and the second discharge hole 6 are in a separated state, the discharging pipe 5 blocks the first discharge hole 4, the rice in the discharging hopper 2 cannot be discharged, when the quantitative packaging is needed, the regulating mechanism works at this time, the first spring 8 is elastically released, and drives the limiting ring 7 to move away from the discharging hopper 2, so as to ensure that the limiting wheel 9 always abuts against the regulating mechanism, thereby driving the discharging pipe 5 to move away from the guide pipe 3, so that the distance between the first discharge hole 4 and the second discharge hole 6 gradually decreases, when the first discharge hole 4 and the second discharge hole 6 are connected, the rice in the discharging hopper 2 will enter the discharging pipe 5 through the first discharge hole 4 and the second discharge hole 6, and be discharged into the packaging bag through the discharging pipe 5, after a certain amount of rice is conveyed, under the action of the regulating mechanism, the limiting wheel 9 is driven to move, and the discharging pipe 5 is driven to move towards the guide pipe 3 again through the limiting ring 7, so that the first spring 8 is compressed, and the first discharge hole 4 is separated from the second discharge hole 6 again, at this time, the discharging pipe 5 stops conveying rice, and the above steps are repeated to ensure that the amount of rice conveyed each time is certain.

[0041] Please refer to Figure 1 、 Figures 3-4 、 Figures 6-8The supporting frame 1 is further provided with a regulating mechanism connected with the conveying mechanism, the regulating mechanism can control the discharging amount of the conveying mechanism, the regulating mechanism is provided with an annular groove 14 and an arc-shaped groove 15 which are symmetrically arranged and connected with each other, the regulating mechanism comprises a No. 1 motor 19 fixedly installed on the supporting frame 1, transmission rods 10 which are symmetrically arranged and rotationally installed on the supporting frame 1, a No. 1 limiting groove 11 formed in the transmission rod 10, the supporting frame 1 is provided with a limiting assembly connected with the limiting wheel 9 and the No. 1 limiting groove 11, the limiting assembly is provided with the annular groove 14 and the arc-shaped groove 15, one of the transmission rods 10 is connected with the output shaft of the No. 1 motor 19, wherein the limiting assembly comprises a No. 1 rotating rod 12 rotationally installed in the transmission rod 10, the No. 1 rotating rod 12 is provided with a No. 1 limiting rod 13 clamped with the No. 1 limiting groove 11, the No. 1 rotating rod 12 is fixedly provided with a No. 1 cam 16, a No. 2 cam 17 and a No. 3 cam 18 which are equidistantly arranged and abut against the limiting wheel 9, and the No. 1 rotating rod 12 is provided with the annular groove 14 and the arc-shaped groove 15.

[0042] Further, the long axes of the No. 1 cam 16, the No. 2 cam 17 and the No. 3 cam 18 are the same, the sizes of the short axes are sequentially reduced, so that when the long axes of the three groups of cams abut against the limiting wheel 9, the limiting wheel 9 rises by the same height, the discharging pipe 5 stops discharging, when the short axes of the three groups of cams abut against the limiting wheel 9, the limiting wheel 9 descends by different heights, so that the coincident sizes of the No. 1 discharging hole 4 and the No. 2 discharging hole 6 are different, ensuring that the discharging amounts are different, the annular groove 14 is arranged in a circular ring shape, the arc-shaped groove 15 is arranged in a spiral shape, the arc-shaped groove 15 is connected with the annular groove 14, the two grooves are symmetrically arranged and equidistantly provided with three groups, in the initial state, the long axis of the No. 2 cam 17 abuts against the limiting wheel 9, at this time, the discharging pipe 5 stops discharging, when discharging is needed, at this time, the No. 1 motor 19 works to drive the transmission rod 10 to rotate, because the No. 1 limiting groove 11 and the No. 1 limiting rod 13 are clamped, under the action of the No. 1 limiting groove 11 and the No. 1 limiting rod 13, the No. 1 rotating rod 12 is driven to rotate, thereby driving the cam to rotate, when the long axis of the cam is separated from the limiting wheel 9, the No. 1 spring 8 is elastically released, and drives the limiting wheel 9 to move through the limiting ring 7, so that the limiting wheel 9 moves to the position abutting against the short axis of the cam, so that the two discharging holes are connected, and the rice is conveyed through the discharging pipe 5, the cam continues to rotate, when the long axis of the cam abuts against the limiting wheel 9 again, the discharging pipe 5 enters the stroke end of the guide pipe 3 again, so that the discharging pipe 5 stops discharging, the above steps are repeated, thereby realizing the quantitative conveying of rice, when the rice packaging amount needs to be adjusted, the No. 1 rotating rod 12 can be driven to move a certain distance along the length direction of the transmission rod 10 through the arc-shaped groove 15 and the annular groove 14, so that another cam moves to the position abutting against the limiting wheel 9, thereby adjusting the discharging amount of the discharging pipe 5 each time.

[0043] Please refer to Figures 1-2 、 Figure 4 、 Figures 7-9 , the support frame 1 is provided with an elastic support assembly matched with the annular groove 14 and the arc-shaped groove 15, the elastic support assembly comprises a support sleeve 28 fixedly installed on the driving mechanism, a support rod 29 movably installed in the support sleeve 28 and intermittently engaged with the annular groove 14 and the arc-shaped groove 15, and a second spring 31 fixed in the support sleeve 28 and abutting against the support rod 29, a sliding groove is formed in the support sleeve 28, and the support rod 29 is connected with the guide assembly.

[0044] Further, in the initial state, the second spring 31 is in a compressed state, so that the support rod 29 is located at the stroke end away from the support sleeve 28, and the support rod 29 is located in the annular groove 14, ensuring that the first rotating rod 12 does not deviate along the length direction of the transmission rod 10 when rotating, when the discharging amount needs to be adjusted, the driving mechanism works and drives the support sleeve 28 to move, thereby driving the support rod 29 to move, under the action of the guide assembly, the support rod 29 is separated from the annular groove 14, and under the action of the second spring 31, the support rod 29 slides on the surface of the first rotating rod 12, when the support rod 29 moves to the stroke end, the support rod 29 just moves to the matched position of the arc-shaped groove 15, with the rotation of the first rotating rod 12 and under the action of the second spring 31, the support rod 29 enters the arc-shaped groove 15, and under the action of the support rod 29, the first rotating rod 12 moves a certain distance along the length direction of the transmission rod 10, then the support rod 29 is separated from the arc-shaped groove 15 and enters the annular groove 14, at this time, the other cam moves to the abutting position of the limiting wheel 9.

[0045] Preferably, in order to ensure the ration packaging of rice, the discharging pipe 5 needs to be in the initial stop discharging state when the discharging amount is adjusted, when the support rod 29 enters the arc-shaped groove 15, the long axis of the cam abuts against the limiting wheel 9, and when the support rod 29 is separated from the arc-shaped groove 15, the long axis of the cam still abuts against the limiting wheel 9, thereby ensuring that the discharging pipe 5 is always in the initial stop discharging state during the whole adjustment of the discharging amount.

[0046] Please refer to Figures 1-2 、 Figures 3-4 、 Figure 7 、 Figure 9The support frame 1 is further provided with a driving mechanism for driving the elastic support assembly to move in the horizontal direction, the driving mechanism comprises a second motor 27 fixedly installed on the support frame 1, a second rotating rod 25 rotatably installed on the support frame 1 and connected with an output shaft of the second motor 27, a guide assembly provided on the support frame 1 and connected with the second rotating rod 25, and the guide assembly is fixedly connected with the support sleeve 28, wherein the guide assembly comprises a guide rod 20 fixedly installed on the support frame 1, a second limiting rod 21 fixedly installed on the guide rod 20, a clamping structure provided on the support frame 1 and connected with the guide rod 20 and the second rotating rod 25, the clamping structure is provided with a second limiting groove 23 matched with the second limiting rod 21, and the clamping structure is fixedly connected with the support sleeve 28.

[0047] Further, the threaded grooves 26 are provided with two groups, and the two groups of threaded grooves 26 have the same spiral direction, in the initial state, the fixed rod 24 is located at the middle position of the threaded groove 26, at this time, the second cam 17 abuts against the limiting wheel 9, when it is necessary to adjust the discharging amount, at this time, the second motor 27 works and drives the second rotating rod 25 to rotate, so as to drive the threaded groove 26 to move, due to the clamping of the threaded groove 26 and the fixed rod 24, under the action of the threaded groove 26, the two movable sleeves 22 fixed with the fixed rod 24 move in the same direction, and due to the clamping of the second limiting groove 23 and the second limiting rod 21, the movable sleeve 22 can only move along the length direction of the guide rod 20, so as to ensure that the fixed rod 24 and the support rod 29 will not deviate during movement, the movable sleeve 22 will also drive the support rod 29 to move, when the fixed rod 24 moves to the end of the stroke on one side of the threaded groove 26, the second motor 27 stops working, at this time, the movable sleeve 22 stops moving, and the support rod 29 moves to the matching position of the arc-shaped groove 15, so as to realize the adjustment of the cam position

[0048] Please refer to Figure 2 、 Figure 4 、 Figure 10The fixed plate 32 is provided with a guide assembly connected with the elastic support assembly, the guide assembly can control the cooperation and separation of the elastic support assembly with the annular groove 14 and the arc-shaped groove 15, the guide assembly comprises a special-shaped groove 33 opened on the fixed plate 32, the fixed plate 32 is hinged with a hinge rod 34, the fixed plate 32 is fixed with a limiting block 35 abutting against the hinge rod 34, and the support rod 29 is fixed with a protruding rod 30 clamped with the special-shaped groove 33 and the sliding groove.

[0049] Finally, when adjusting the cam position, the support rod 29 needs to be out of the initial position of the annular groove 14 and into the arc-shaped groove 15 connected with another annular groove 14, in order to ensure that the support rod 29 does not directly enter the arc-shaped groove 15 connected with the annular groove 14 after leaving the initial position of the annular groove 14, it is necessary to control the support rod 29 to be at different heights with the arc-shaped groove 15 when moving along the length direction of the guide rod 20, the special-shaped groove 33 is equidistantly provided with two groups and is connected with each other, the two ends of the special-shaped groove 33 are arc-shaped, the middle part is triangular, and the two ends of the two special-shaped grooves 33 close to each other are connected with each other, the two end points of the special-shaped groove 33 are at the same height and are at the highest point, in the initial state, the protruding rod 30 is located at the middle position of the connection part of the two special-shaped grooves 33, the protruding rod 30 is located at the end of the stroke away from the movable sleeve 22, and at this time, the support rod 29 is located in the annular groove 14 at the middle position, the second cam 17 abuts against the limiting wheel 9, when it is necessary to increase the discharging amount, the first rotating rod 12 needs to be driven to move towards the first cam 16, so that the third cam 18 moves to the abutting position of the limiting wheel 9, therefore, it is necessary to adjust the support rod 29 to move into the arc-shaped groove 15 away from the cam side, at this time, the second rotating rod 25 rotates and drives the movable sleeve 22 to move along the length direction of the guide rod 20 under the action of the threaded groove 26 and the fixed rod 24, and drives the protruding rod 30 to move, the protruding rod 30 moves in the arc-shaped groove and drives the support rod 29 to move towards the support sleeve 28, when the protruding rod 30 moves to the inclined section in the triangular groove, since the limiting block 35 abuts against the hinged rod 34, under the action of the hinged rod 34, the protruding rod 30 moves along the length direction of the hinged rod 34 and drives the support rod 29 to continuously move towards the support sleeve 28, so as to ensure that the support rod 29 does not interfere with the arc-shaped groove 15, when the protruding rod 30 is separated from the hinged rod 34, the support rod 29 has moved to the position away from the arc-shaped groove 15, at this time, the second spring 31 is elastically released, drives the support rod 29 to move away from the support sleeve 28 and abuts against the surface of the first rotating rod 12, when the protruding rod 30 enters the arc-shaped groove of one side of the special-shaped groove 33, the support rod 29 just moves into the other arc-shaped groove 15, at this time, the movable sleeve 22 stops moving, under the action of the support rod 29, the first rotating rod 12 moves along the length direction of the transmission rod 10 and drives the third cam 18 to move to the abutting position of the limiting wheel 9.

[0050] Preferably, since the annular groove 14 and the arcuate groove 15 and the special-shaped groove 33 are symmetrically arranged, when the two movable sleeves 22 move in the same direction, one of the two support rods 29 needs to avoid interference with the arcuate groove 15 when it is disengaged from the annular groove 14, and the support rod 29 needs to pass through the protruding rod 30 and the special-shaped groove 33 to ensure that the support rod 29 does not interfere with the arcuate groove 15, and the movement track is as described above, and the other support rod 29, after being disengaged from the annular groove 14, is on the other side of the arcuate groove 15 in its direction of travel, and only after it moves to the required position will it cooperate with the other arcuate groove 15 and control the position of the cam, therefore, when the movable sleeve 22 moves, the protruding rod 30 also moves along the circular-arc-shaped groove and enters the triangular groove, and since it is not in abutment with the hinged rod 34 at this time, the protruding rod 30 will travel along the section of the triangular groove that is parallel to the fixed plate 32, so that the support rod 29 is always in surface contact with the first rotating rod 12 after being disengaged from the annular groove 14, when the protruding rod 30 moves to the position of abutment with the hinged rod 34, the direction of the force of the protruding rod 30 is not limited by the limiting block 35, thereby driving the hinged rod 34 to rotate, ensuring that the protruding rod 30 passes smoothly, when the protruding rod 30 enters the circular-arc-shaped groove on one side of the special-shaped groove 33, the support rod 29 moves to the position of cooperation with the arcuate groove 15, thereby adjusting the position of the cam.

[0051] In use, when the quantitative packaging is needed, the first motor 19 works to drive the transmission rod 10 to rotate. Since the first limiting groove 11 and the first limiting rod 13 are engaged, the first rotating rod 12 is driven to rotate under the action of the first limiting groove 11 and the first limiting rod 13, so as to drive the cam to rotate. When the long shaft of the cam is separated from the limiting wheel 9, the first spring 8 is elastically released, and the limiting wheel 9 is driven to move by the limiting ring 7, so that the limiting wheel 9 moves to the position abutting against the short shaft of the cam, thereby driving the discharging pipe 5 to move away from the guide pipe 3, so that the distance between the first discharging hole 4 and the second discharging hole 6 gradually decreases. When the first discharging hole 4 is connected with the second discharging hole 6, the rice in the discharging hopper 2 will enter the discharging pipe 5 through the first discharging hole 4 and the second discharging hole 6, and then be discharged into the packaging bag through the discharging pipe 5. The cam continues to rotate, and when the long shaft of the cam abuts against the limiting wheel 9 again, the discharging pipe 5 enters the end of the travel of the guide pipe 3 again, so that the discharging pipe 5 stops discharging. The above steps are repeated, so as to realize the quantitative conveying of the rice. When the packaging amount of the rice needs to be adjusted, the second motor 27 works to drive the second rotating rod 25 to rotate, so as to drive the threaded groove 26 to move. Since the threaded groove 26 is engaged with the fixed rod 24, the two movable sleeves 22 fixed with the fixed rod 24 move in the same direction under the action of the threaded groove 26. Since the second limiting groove 23 and the second limiting rod 21 are engaged, the movable sleeve 22 can only move along the length direction of the guide rod 20, so as to ensure that the fixed rod 24 and the supporting rod 29 do not deviate during movement. The movable sleeve 22 also drives the supporting rod 29 to move, and drives the protruding rod 30 to move in the arc-shaped groove, and drives the supporting rod 29 to move into the supporting sleeve 28. When the protruding rod 30 moves to the inclined section in the triangular groove, since the limiting block 35 abuts against the hinged rod 34, the protruding rod 30 moves along the length direction of the hinged rod 34 under the action of the hinged rod 34, and drives the supporting rod 29 to continuously move into the supporting sleeve 28, so as to ensure that the supporting rod 29 does not interfere with the arc-shaped groove 15. When the protruding rod 30 is separated from the hinged rod 34, the supporting rod 29 has moved to the position separated from the arc-shaped groove 15. At this time, the second spring 31 is elastically released to drive the supporting rod 29 to move away from the supporting sleeve 28 and abut against the surface of the first rotating rod 12. When the protruding rod 30 enters the arc-shaped groove on one side of the special-shaped groove 33, the supporting rod 29 just moves into the other arc-shaped groove 15. At this time, the movable sleeve 22 stops moving, and the first rotating rod 12 moves along the length direction of the transmission rod 10 under the action of the supporting rod 29, so as to drive the required cam to abut against the limiting wheel 9.

[0052] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quantitative feeding device for rice production and packaging, characterized in that, include: A support frame (1) is fixed with a feeding hopper (2) for conveying rice, and a fixing plate (32) is also fixed on the support frame (1) in a symmetrical arrangement. The support frame (1) is provided with a conveying mechanism for intermittently conveying rice and connected to the hopper (2). The support frame (1) is also provided with a control mechanism, which can control the amount of rice conveyed by the conveying mechanism. The control mechanism is provided with an annular groove (14) and an arc groove (15) that are connected to each other and arranged symmetrically. The support frame (1) is provided with an elastic support assembly that cooperates with the annular groove (14) and the arc groove (15). The support frame (1) is also provided with a drive mechanism for driving the elastic support assembly to move in the horizontal direction. The fixed plate (32) is provided with a guide assembly, which can control the cooperation and separation of the elastic support assembly with the annular groove (14) and the arc groove (15). The conveying mechanism includes a guide pipe (3) fixedly installed inside the hopper (2) and passing through the hopper (2) at one end facing the support frame (1). A first discharge hole (4) is opened on the guide pipe (3). A feeding assembly connected to the guide pipe (3) is provided on the support frame (1). A second discharge hole (6) is opened on the feeding assembly. The feeding assembly includes a feeding pipe (5) movably installed inside the guide pipe (3), a limit ring (7) fixed on the feeding pipe (5), a first spring (8) sleeved on the feeding pipe (5) and the guide pipe (3) and abutting against the limit ring (7), a limit wheel (9) connected to the control mechanism fixed on the limit ring (7), and a second discharge hole (6) opened on the feeding pipe (5). The control mechanism includes a first motor (19) fixedly installed on the support frame (1), a transmission rod (10) rotatably installed on the support frame (1) and symmetrically arranged, and a first limiting groove (11) opened on the transmission rod (10). The support frame (1) is provided with a limiting component connected to the first limiting groove (11). The limiting component is provided with the annular groove (14) and the arc groove (15). One of the transmission rods (10) is connected to the output shaft of the first motor (19). The limiting assembly includes a first rotating rod (12) rotatably mounted in the transmission rod (10), a first limiting rod (13) that engages with the first limiting groove (11) is provided on the first rotating rod (12), a first cam (16), a second cam (17) and a third cam (18) that are equidistantly arranged and abut against the limiting wheel (9) are fixed on the first rotating rod (12), and an annular groove (14) and an arc groove (15) are provided on the first rotating rod (12).

2. The quantitative feeding device for rice production and packaging as described in claim 1, characterized in that, The elastic support assembly includes a support sleeve (28) fixedly installed on the drive mechanism, a support rod (29) movably installed in the support sleeve (28) and intermittently engaged with the annular groove (14) and the arc groove (15), and a second spring (31) fixed in the support sleeve (28) and abutting against the support rod (29). The support sleeve (28) is provided with a sliding groove.

3. The quantitative feeding device for rice production and packaging as described in claim 2, characterized in that, The drive mechanism includes a second motor (27) fixedly mounted on the support frame (1), a second rotating rod (25) rotatably mounted on the support frame (1) and connected to the output shaft of the second motor (27), and a guide assembly disposed on the support frame (1). The guide assembly is fixedly connected to the support sleeve (28).

4. The quantitative feeding device for rice production and packaging as described in claim 3, characterized in that, The guide assembly includes a guide rod (20) fixedly installed on the support frame (1), a second limiting rod (21) fixedly installed on the guide rod (20), and a locking structure provided on the support frame (1). The locking structure has a second limiting groove (23) that engages with the second limiting rod (21).

5. The quantitative feeding device for rice production and packaging as described in claim 4, characterized in that, The engaging structure includes a movable sleeve (22) movably mounted on the guide rod (20), a threaded groove (26) opened on the second rotating rod (25), and a fixed rod (24) fixedly mounted on the movable sleeve (22) and engaging with the threaded groove (26). The movable sleeve (22) is provided with the second limiting groove (23) and is fixedly connected to the support sleeve (28).

6. The quantitative feeding device for rice production and packaging as described in claim 2, characterized in that, The guiding component includes a shaped groove (33) formed on the fixed plate (32), a hinge rod (34) hinged on the fixed plate (32), a limiting block (35) fixed on the fixed plate (32) and abutting against the hinge rod (34), and a protruding rod (30) fixed on the support rod (29) and engaging with the shaped groove (33) and the slide.

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