A vacuum servo motor assembly device
By designing a vacuum servo motor assembly device, the efficient installation of rotor, end cover and motor housing components is achieved using a variety of transmission and handling mechanisms, the problem of low assembly efficiency in the prior art is solved and the efficient and reliability of assembly is achieved.
Patent Information
- Application Number
- CN202421443210.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The existing vacuum servo motor assembly method relies on manual installation, has low assembly efficiency and lacks an assembly device with simple structure and high efficiency and reliable assembly.
A vacuum servo motor assembly device is designed, including the first and second workbenches, and is provided with a rotor transmission mechanism, a rotor handling mechanism, a motor housing assembly handling mechanism, an end cover transmission mechanism, an end cover handling mechanism and a screw feeding and installation mechanism, through which the efficient transmission and installation of the rotor, an end cover and a motor housing assembly are realized.
The efficient and reliable feeding and installation of rotor, end cap and motor housing components are achieved, and assembly efficiency and reliability are improved, and the problem of low assembly efficiency in the prior art is solved.
Smart Images

Figure CN222721302U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum servo motors, in particular to an assembly device for vacuum servo motors. Background Art
[0002] A servo motor is an engine that controls the operation of mechanical components in a servo system, and it is a kind of auxiliary motor indirect speed change device. Among them, the vacuum servo motor is a type of servo motor, which has the characteristics of high performance, energy saving and high efficiency, long life, and multi-function. In addition, from a structural point of view, the vacuum servo motor mainly includes a motor housing assembly, a rotor and an end cover assembly, and a stator coil and a stator lamination are arranged in the motor housing assembly. At present, the vacuum servo motor assembly method in the prior art still adopts manual installation, and its assembly efficiency is low.
[0003] Therefore, there is an urgent need to propose a vacuum servo motor assembly device with simple structure, efficient and reliable assembly. Utility Model Content
[0004] In view of the above problems, the purpose of the present invention is to provide a vacuum servo motor assembly device. The technical solution adopted by the present invention is as follows:
[0005] A vacuum servo motor assembly device installs a rotor, an end cover and a connecting screw on a motor housing assembly, and includes a first workbench and a second workbench, a rotor transmission mechanism, a rotor handling mechanism, a motor housing assembly handling mechanism, an end cover transmission mechanism and an end cover handling mechanism arranged on the first workbench, and a screw feeding and installation mechanism arranged on the first workbench and the second workbench; the motor housing assembly handling mechanism carries the motor housing assembly to be assembled; the rotor transmission mechanism transmits the rotor to be assembled, and the rotor handling mechanism carries it and inserts it into the motor housing assembly; the end cover transmission mechanism transmits the end cover to be assembled, and the end cover handling mechanism carries it and places it on the motor housing assembly; the screw feeding and installation mechanism transmits the connecting screw and connects it to the end cover and the motor housing assembly.
[0006] Furthermore, the rotor handling mechanism includes a gantry and a rotor loading and placing table fixed on the first workbench, a first transverse moving module arranged on the gantry, a first transverse moving slide arranged on the first transverse moving module, and a handling assembly and a rotor flipping and unloading mechanism arranged on the first transverse moving slide; the handling assembly includes a first longitudinal moving module arranged on the first transverse moving slide, and a first rotor clamping assembly arranged at the lower part of the first longitudinal moving module; the first rotor clamping assembly clamps the rotor on the rotor transmission mechanism and places it on the rotor loading and placing table; the rotor flipping and unloading mechanism clamps the rotor on the rotor loading and placing table and places it into the motor housing assembly.
[0007] Furthermore, the rotor flipping and unloading mechanism includes a second longitudinal moving module fixed on a first transverse moving slide, a first rotating cylinder arranged on the second longitudinal moving module, a first supporting seat arranged on the first rotating cylinder, a second rotating cylinder arranged on the first supporting seat, a second rotor clamping cylinder arranged at the bottom of the second rotating cylinder, and a pair of rotor clamping heads arranged on the second rotor clamping cylinder; the first rotating cylinder and the second rotor clamping cylinder drive the rotor on the rotor clamping head to change from a horizontal arrangement to a longitudinal arrangement.
[0008] Furthermore, the motor housing assembly transport mechanism includes a first lower support platform fixed on the first workbench, a first slide rail slider assembly arranged on the first lower support platform, a second transverse sliding plate arranged on the first slide rail slider assembly, a second transverse driving gas rod fixed on the first lower support platform and driving the second transverse sliding plate to move along the direction of the first slide rail slider assembly, a motor housing assembly clamping support platform fixed on the second transverse sliding plate, and two motor housing clamping assemblies arranged on the motor housing assembly clamping support platform and mirror-imaged; the motor housing clamping assembly includes a first clamping cylinder arranged on the motor housing assembly clamping support platform, and a motor housing assembly clamping head arranged on the first clamping cylinder and clamped on the outer surface of the motor housing assembly.
[0009] Furthermore, the end cover transmission mechanism includes a chain conveyor belt fixed on the first workbench, and a conveyor belt driving motor arranged on the chain conveyor belt.
[0010] Furthermore, the screw feeding installation mechanism includes a vibration plate arranged on the second workbench, a direct vibration component arranged on the first workbench and connected to the outlet of the vibration plate, a material dividing conveyor belt arranged on the first workbench and used to divide the connecting screw transmitted by the direct vibration component into left and right materials, and a left connecting bolt fastening component and a right connecting bolt fastening component arranged on the first workbench and used to install the connecting screw transmitted on the material dividing conveyor belt on the end cover and the motor housing assembly.
[0011] Furthermore, the structures of the left connecting bolt fastening assembly and the right connecting bolt fastening assembly are the same, and the left connecting bolt fastening assembly includes a lower support column fixed on the first workbench, an upper top plate arranged on the top of the lower support column, a second slide rail slider assembly and a third transverse driving gas rod arranged on the upper top plate, a third transverse sliding plate arranged on the second slide rail slider assembly and driven by the third transverse driving gas rod to move along the direction of the second slide rail slider assembly, a longitudinal support plate fixed on the third transverse sliding plate along the longitudinal direction, a fourth transverse moving module arranged on the longitudinal support plate, a fourth sliding plate arranged on the fourth transverse moving module, a third longitudinal driving cylinder and a fifth slide rail slider assembly arranged on the fourth sliding plate, a fifth sliding plate arranged on the fifth slide rail slider assembly and driven by the third longitudinal driving cylinder to move along the longitudinal direction, and an electric batching assembly arranged on the fifth sliding plate and facing downward; the electric batching assembly absorbs the connecting screw transmitted on the material distribution conveyor belt and is installed on the end cover and motor housing assembly.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] (1) The utility model provides a rotor transmission mechanism, a rotor handling mechanism, a motor housing assembly handling mechanism, an end cover transmission mechanism and an end cover handling mechanism to respectively transmit and handle the rotor, end cover and motor housing assembly to be assembled, thereby ensuring efficient and reliable loading.
[0014] (2) The utility model provides a rotor flipping and discharging mechanism to turn the horizontally placed rotor into a longitudinal arrangement so as to facilitate reliable insertion into the motor housing assembly, and its assembly is efficient and reliable.
[0015] (3) The utility model provides a vibration plate, a direct vibration assembly, a material distribution conveyor belt, a left connecting bolt fastening assembly and a right connecting bolt fastening assembly, so as to facilitate efficient and reliable installation of the connecting bolts on the end cover and the motor housing assembly.
[0016] In summary, the utility model has the advantages of simple structure, efficient and reliable assembly, etc., and has high practical value and promotion value in the field of vacuum servo motor technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope of protection. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Figure 2 It is a structural schematic diagram of the rotor transmission mechanism and the rotor handling mechanism in the utility model.
[0020] Figure 3 It is a schematic diagram of the first state of the rotor flipping and unloading mechanism in the utility model.
[0021] Figure 4 It is a schematic diagram of the second state of the rotor flipping and discharging mechanism in the utility model.
[0022] Figure 5 It is a structural schematic diagram of the motor housing assembly transport mechanism in the utility model.
[0023] Figure 6 It is a structural schematic diagram of the end cover transmission mechanism of the utility model.
[0024] Figure 7 It is a structural schematic diagram of the screw feeding installation mechanism in the utility model.
[0025] Figure 8 It is a structural schematic diagram of the first angle of the left connecting bolt fastening assembly in the utility model.
[0026] Fig. 9 It is a structural schematic diagram of the second angle of the left connecting bolt fastening assembly in the utility model.
[0027] In the above drawings, the component names corresponding to the reference numerals are as follows:
[0028] 1. First workbench; 2. Second workbench; 3. Rotor transmission mechanism; 4. Rotor handling mechanism; 5. Motor housing assembly handling mechanism; 6. End cover transmission mechanism; 7. End cover handling mechanism; 8. Screw feeding and installation mechanism; 20. Rotor; 30. End cover; 41. Door frame; 42. First transverse moving module; 43. First transverse moving slide plate; 44. Rotor turning and unloading mechanism; 451. First longitudinal moving module; 452. First rotor clamping assembly; 46. Rotor feeding and placing platform; 441. Second longitudinal moving module; 442. First rotating cylinder; 443. First supporting seat; 444. Second rotating cylinder; 445. Second rotor clamping cylinder; 446. Rotor clamping head; 51. First lower supporting platform; 52. First slide rail slider assembly; 53. Second transverse sliding plate ; 54, second transverse driving air rod; 55, motor housing assembly clamping support platform; 561, first clamping cylinder; 562, motor housing assembly clamping head; 61, chain conveyor belt; 62, conveyor belt driving motor; 81, vibration plate; 82, direct vibration assembly; 83, material distribution conveyor belt; 84, left connecting bolt fastening assembly; 85, right connecting bolt fastening assembly; 8401, lower support column; 8402, upper top plate; 8403, second slide rail slider assembly; 8404, third transverse sliding plate; 8405, third transverse driving air rod; 8406, longitudinal support plate; 8407, fourth transverse moving module; 8408, fourth sliding plate; 8409, third longitudinal driving air cylinder; 8410, fifth slide rail slider assembly; 8411, fifth sliding plate; 8412, electric screwdriver assembly. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of this application clearer, the utility model is further described below in conjunction with the accompanying drawings and embodiments, and the implementation methods of this utility model include but are not limited to the following embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0030] In this embodiment, the term "and / or" is merely a term used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.
[0031] The terms "first" and "second" in the description and claims of this embodiment are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.
[0032] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.
[0033] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.
[0034] like Figures 1 to 9 As shown, this embodiment provides a vacuum servo motor assembly device, which installs a rotor 20, an end cover 30 and a connecting screw on a motor housing assembly. In this embodiment, the rotor 20, the end cover 30 and the motor housing assembly are respectively transferred and loaded, the rotor 20 is first inserted into the motor housing assembly, and then the end cover 30 is covered, and the connecting screw is connected to the end cover 30 and the motor housing assembly.
[0035] Specifically, the vacuum servo motor assembly device includes a first workbench 1 and a second workbench 2, a rotor transmission mechanism 3, a rotor handling mechanism 4, a motor housing assembly handling mechanism 5, an end cover transmission mechanism 6 and an end cover handling mechanism 7 arranged on the first workbench 1, and a screw feeding and installation mechanism 8 arranged on the first workbench 1 and the second workbench 2. Among them, the motor housing assembly handling mechanism 5 is used to carry the motor housing assembly to be assembled, the rotor transmission mechanism 3 is used to transmit the rotor 20 to be assembled, and the rotor handling mechanism 4 is used to carry and insert it into the motor housing assembly, the end cover transmission mechanism 6 is used to transmit the end cover 30 to be assembled, and the end cover handling mechanism 7 is used to carry and place it on the motor housing assembly, and finally, the screw feeding and installation mechanism 8 is used to transmit the connecting screw and connect it to the end cover 30 and the motor housing assembly.
[0036] First, the motor housing assembly to be assembled is loaded. The motor housing assembly handling mechanism 5 includes a first lower support platform 51 fixed on the first workbench 1, a first slide rail slider assembly 52 arranged on the first lower support platform 51, a second transverse sliding plate 53 arranged on the first slide rail slider assembly 52, a second transverse driving gas rod 54 fixed on the first lower support platform 51 and driving the second transverse sliding plate 53 to move along the direction of the first slide rail slider assembly 52, a motor housing assembly clamping support platform 55 fixed on the second transverse sliding plate 53, and two motor housing clamping assemblies arranged on the motor housing assembly clamping support platform 55 and mirror-imaged. Among them, the motor housing clamping assembly includes a first clamping cylinder 561 arranged on the motor housing assembly clamping support platform 55, and a motor housing assembly clamping head 562 arranged on the first clamping cylinder 561 and clamped on the outer surface of the motor housing assembly.
[0037] In this embodiment, the rotor handling mechanism 4 includes a gantry 41 and a rotor loading and placing platform 46 fixed on the first workbench 1, a first transverse moving module 42 arranged on the gantry 41, a first transverse moving slide 43 arranged on the first transverse moving module 42, and a handling assembly and a rotor flipping and unloading mechanism 44 arranged on the first transverse moving slide 43; the handling assembly includes a first longitudinal moving module 451 arranged on the first transverse moving slide 43, and a first rotor clamping assembly 452 arranged at the lower part of the first longitudinal moving module 451. Among them, the first rotor clamping assembly 452 clamps the rotor 20 on the rotor transmission mechanism 3 and places it on the rotor loading and placing platform 46. In addition, the rotor flipping and unloading mechanism 44 clamps the rotor 20 on the rotor loading and placing platform 46 and puts it into the motor housing assembly.
[0038] like Figure 3 to Figure 4 As shown, in this embodiment, since the rotor transmission mechanism 3 adopts a horizontal transmission rotor 20, it is necessary to turn the horizontal rotor into a longitudinal arrangement and insert it into the motor housing assembly. The rotor flipping and unloading mechanism 44 includes a second longitudinal moving module 441 fixed on the first transverse moving slide 43, a first rotating cylinder 442 arranged on the second longitudinal moving module 441, a first supporting seat 443 arranged on the first rotating cylinder 442, a second rotating cylinder 444 arranged on the first supporting seat 443, a second rotor clamping cylinder 445 arranged at the bottom of the second rotating cylinder 444, and a pair of rotor clamping heads 446 arranged on the second rotor clamping cylinder 445. Among them, the first rotating cylinder 442 and the second rotor clamping cylinder 445 drive the rotor 20 on the rotor clamping head 446 to turn from a horizontal arrangement to a longitudinal arrangement.
[0039] After the rotor 20 is inserted into the motor housing assembly, the end cap 30 is assembled. The end cap transmission mechanism 6 includes a chain conveyor 61 fixed on the first workbench 1, and a conveyor drive motor 62 arranged on the chain conveyor 61. The end cap transport mechanism 7 clamps the end cap 30 on the chain conveyor 61 and places it on the motor housing assembly.
[0040] Next, the connection screw can be installed. The screw feeding installation mechanism 8 includes a vibration plate 81 arranged on the second workbench 2, a direct vibration component 82 arranged on the first workbench 1 and connected to the outlet of the vibration plate 81, a material distribution conveyor belt 83 arranged on the first workbench 1 and used to distribute the connection screws transmitted by the direct vibration component 82 to the left and right, and a left connection bolt fastening component 84 and a right connection bolt fastening component 85 arranged on the first workbench 1 and used to install the connection screws transmitted on the material distribution conveyor belt 83 on the end cover 30 and the motor housing assembly.
[0041] In this embodiment, the left connecting bolt fastening assembly 84 and the right connecting bolt fastening assembly 85 have the same structure. Taking the left connecting bolt fastening assembly 84 as an example, it includes a lower support column 8401 fixed on the first workbench 1, an upper top plate 8402 arranged on the top of the lower support column 8401, a second slide rail slider assembly 8403 and a third lateral driving gas rod 8405 arranged on the upper top plate 8402, and a third lateral sliding plate 8404 arranged on the second slide rail slider assembly 8403 and driven by the third lateral driving gas rod 8405 to move along the direction of the second slide rail slider assembly 8403, The longitudinal support plate 8406 fixed on the third transverse sliding plate 8404, the fourth transverse moving module 8407 arranged on the longitudinal support plate 8406, the fourth sliding plate 8408 arranged on the fourth transverse moving module 8407, the third longitudinal driving cylinder 8409 and the fifth slide rail slider assembly 8410 arranged on the fourth sliding plate 8408, the fifth sliding plate 8411 arranged on the fifth slide rail slider assembly 8410 and driven by the third longitudinal driving cylinder 8409 to move in the longitudinal direction, and the electric batch assembly 8412 arranged on the fifth sliding plate 8411 and facing downward. Among them, the electric batch assembly 8412 absorbs the connecting screw transmitted on the material distribution conveyor belt 83 and is installed on the end cover 30 and the motor housing assembly. In this embodiment, the second slide rail slider assembly 8403, the third transverse driving gas rod 8405, the third transverse sliding plate 8404, the third longitudinal driving cylinder 8409, the fifth slide rail slider assembly 8410, the longitudinal support plate 8406, the fourth transverse moving module 8407, etc. provide three-axis movement to facilitate reliable movement of the electric screwdriver assembly 8412.
[0042] The above embodiments are only preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any changes that adopt the design principles of the present utility model and are made through non-creative labor on this basis should fall within the protection scope of the present utility model.
Claims
1. A vacuum servo motor assembly device, wherein a rotor (20), an end cover (30) and a connecting screw are mounted on a motor housing assembly, characterized in that: The invention comprises a first workbench (1) and a second workbench (2), a rotor transmission mechanism (3), a rotor handling mechanism (4), a motor housing assembly handling mechanism (5), an end cover transmission mechanism (6) and an end cover handling mechanism (7) arranged on the first workbench (1), and a screw feeding installation mechanism (8) arranged on the first workbench (1) and the second workbench (2); the motor housing assembly handling mechanism (5) carries the motor housing assembly to be assembled; the rotor transmission mechanism (3) transmits the rotor (20) to be assembled, and the rotor handling mechanism (4) carries the rotor (20) to be assembled and inserts the rotor into the motor housing assembly; the end cover transmission mechanism (6) transmits the end cover (30) to be assembled, and the end cover handling mechanism (7) carries the end cover and places the end cover on the motor housing assembly; the screw feeding installation mechanism (8) transmits the connecting screw and connects the end cover (30) and the motor housing assembly.
2. A vacuum servo motor assembly device according to claim 1, characterized in that: The rotor transport mechanism (4) comprises a gantry (41) and a rotor loading and placing platform (46) fixed on the first workbench (1), a first transverse moving module (42) arranged on the gantry (41), a first transverse moving slide plate (43) arranged on the first transverse moving module (42), and a transport assembly and a rotor turning and unloading mechanism (44) arranged on the first transverse moving slide plate (43); the transport assembly comprises a first longitudinal moving module (451) arranged on the first transverse moving slide plate (43), and a first rotor clamping assembly (452) arranged at the lower part of the first longitudinal moving module (451); the first rotor clamping assembly (452) clamps the rotor (20) on the rotor transmission mechanism (3) and places it on the rotor loading and placing platform (46); the rotor turning and unloading mechanism (44) clamps the rotor (20) on the rotor loading and placing platform (46) and places it into the motor housing assembly.
3. A vacuum servo motor assembly device according to claim 2, characterized in that: The rotor turning and unloading mechanism (44) comprises a second longitudinal moving module (441) fixed on a first transverse moving slide plate (43), a first rotating cylinder (442) arranged on the second longitudinal moving module (441), a first supporting seat (443) arranged on the first rotating cylinder (442), a second rotating cylinder (444) arranged on the first supporting seat (443), a second rotor clamping cylinder (445) arranged at the bottom of the second rotating cylinder (444), and a pair of rotor clamping heads (446) arranged on the second rotor clamping cylinder (445); the first rotating cylinder (442) and the second rotor clamping cylinder (445) drive the rotor (20) on the rotor clamping head (446) to change from a horizontal arrangement to a longitudinal arrangement.
4. A vacuum servo motor assembly device according to claim 1, 2 or 3, characterized in that: The motor housing assembly transport mechanism (5) comprises a first lower support platform (51) fixed on the first workbench (1), a first slide rail slider assembly (52) arranged on the first lower support platform (51), a second transverse sliding plate (53) arranged on the first slide rail slider assembly (52), a second transverse driving air rod (54) fixed on the first lower support platform (51) and driving the second transverse sliding plate (53) to move along the direction of the first slide rail slider assembly (52), a motor housing assembly clamping support platform (55) fixed on the second transverse sliding plate (53), and two motor housing clamping assemblies arranged on the motor housing assembly clamping support platform (55) and arranged in mirror image with each other; the motor housing clamping assembly comprises a first clamping cylinder (561) arranged on the motor housing assembly clamping support platform (55), and a motor housing assembly clamping head (562) arranged on the first clamping cylinder (561) and clamped on the outer surface of the motor housing assembly.
5. A vacuum servo motor assembly device according to claim 1, 2 or 3, characterized in that: The end cover transmission mechanism (6) comprises a chain transmission belt (61) fixed on the first workbench (1), and a transmission belt driving motor (62) arranged on the chain transmission belt (61).
6. A vacuum servo motor assembly device according to claim 1, 2 or 3, characterized in that: The screw feeding installation mechanism (8) comprises a vibration plate (81) arranged on the second workbench (2), a direct vibration component (82) arranged on the first workbench (1) and connected to the outlet of the vibration plate (81), a material distribution conveyor belt (83) arranged on the first workbench (1) and used to distribute the connecting screws transmitted by the direct vibration component (82) to the left and right, and a left connecting bolt fastening component (84) and a right connecting bolt fastening component (85) arranged on the first workbench (1) and used to install the connecting screws transmitted on the material distribution conveyor belt (83) on the end cover (30) and the motor housing component.
7. A vacuum servo motor assembly device according to claim 6, characterized in that: The left connecting bolt fastening assembly (84) and the right connecting bolt fastening assembly (85) have the same structure, and the left connecting bolt fastening assembly (84) includes a lower support column (8401) fixed on the first workbench (1), an upper top plate (8402) arranged on the top of the lower support column (8401), a second slide rail slider assembly (8403) and a third transverse driving gas rod (8405) arranged on the upper top plate (8402), a third transverse sliding plate (8404) arranged on the second slide rail slider assembly (8403) and driven by the third transverse driving gas rod (8405) to move along the direction of the second slide rail slider assembly (8403), and a longitudinal support plate (8406) fixed on the third transverse sliding plate (8404) in the longitudinal direction. ), a fourth lateral moving module (8407) arranged on the longitudinal support plate (8406), a fourth sliding plate (8408) arranged on the fourth lateral moving module (8407), a third longitudinal driving cylinder (8409) and a fifth slide rail slider assembly (8410) arranged on the fourth sliding plate (8408), a fifth sliding plate (8411) arranged on the fifth slide rail slider assembly (8410) and driven by the third longitudinal driving cylinder (8409) to move along the longitudinal direction, and an electric batching assembly (8412) arranged on the fifth sliding plate (8411) and facing downward; the electric batching assembly (8412) absorbs the connecting screw transmitted on the material distribution conveyor belt (83) and is installed on the end cover (30) and the motor housing assembly.