Rotary material collecting device for bolt machining

Abstract

The invention relates to the technical field of bolt machining, and discloses a rotary material receiving device for bolt machining, which comprises a base and a transport trolley, a material conveying mechanism is mounted at the top of the base, the material conveying mechanism comprises a material conveying motor mounted at the top of the base, and a shell cover at the output end of the material conveying motor is connected with a material conveying barrel; a feeding pipe opening is formed in one side of the material conveying barrel, a discharging pipe opening is formed in the other side of the material conveying barrel, a spiral blade shaft is arranged in the material conveying barrel, and one end of the spiral blade shaft penetrates through the material conveying barrel and is fixedly connected with the output end of the material conveying motor. A closed-loop control system is formed by the piezoresistive sensing element, the adjustable valve rod, the sensing contact pin and the like, the weight change of the bolt can be accurately sensed, a resistance value is converted into an electric signal and processed by the controller, the actual weight is judged according to a preset weighing value, and the opening and closing degree of the electromagnetic valve and starting and stopping of the conveying motor are automatically controlled; the discharging speed and number of the bolts are accurately controlled, overflow of the collecting funnel is effectively avoided, and the weighing precision and the production efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt processing, in particular to a rotary material collecting device for bolt processing. Background Art

[0002] Collecting the finished bolts is a crucial step in the bolt production process. Currently, a common method involves placing a container to receive the bolts, requiring workers to constantly monitor the process. When the container is full, it must be replaced promptly. However, this manual operation requires time and labor to stop the discharge process, which is time-consuming and labor-intensive. Furthermore, if workers fail to promptly monitor the process, the bolts can easily spill and scatter, requiring cleanup, hindering production.

[0003] To this end, the present invention provides a rotary material collecting device for bolt processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotary material collecting device for bolt processing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a rotary material collecting device for bolt processing, comprising a base and a transport trolley, a material feeding mechanism being installed on the top of the base, the material feeding mechanism comprising a material feeding motor being installed on the top of the base, a housing cover at the output end of the material feeding motor being connected to a material feeding barrel, a material feeding pipe opening being provided on one side of the material feeding barrel, and a material discharging pipe opening being provided on the other side, a spiral blade shaft being provided inside the material feeding barrel, one end of the spiral blade shaft passing through the material feeding barrel and being fixedly connected to the output end of the material feeding motor; A rotating base is also installed on the top of the base, and a rotating motor is installed at the bottom of the rotating base. The output end of the rotating motor is fixedly connected to a rotating shaft, one end of the rotating shaft passes through the rotating base and extends to the top, and is fixedly connected to the center position of the rotating table. Four weighing mechanisms are installed on the top of the rotating table, and a collecting funnel is correspondingly provided above the top of each weighing mechanism to ensure that the bolts discharged from the feeding cylinder can fall into the designated position accurately. A connecting plate is also installed on the top of the rotating base, and an adsorption transportation mechanism is installed on the top of the connecting plate; A material receiving frame is placed on the transport trolley, and a funnel mold base is built into the material receiving frame for storing multiple collecting funnels.

[0006] Preferably, a sloped deflector cover is installed above the interior of the collecting funnel, and its outer surface is made of soft and smooth material, which not only reduces the friction damage of the bolts during the sliding process, but also guides the bolts to slide smoothly into the interior. A solenoid valve is provided inside the collecting funnel below the sloped deflector cover.

[0007] Preferably, the weighing mechanism specifically includes a weighing cylinder installed on a rotating table, the weighing cylinder is internally provided with two chambers, divided into an upper chamber and a lower chamber, the upper chamber is adapted to the outer wall of the collecting funnel, and the lower chamber is internally provided with a piezoresistive sensor element housing, the interior of the piezoresistive sensor element housing is provided with a piezoresistive sensor element, the bottom of the piezoresistive sensor element is connected to a controller through a cable, an adjustable valve stem is movably provided between the upper chamber and the lower chamber, the top of the adjustable valve stem extends to the upper chamber and contacts the bottom of the collecting funnel, and the bottom of the adjustable valve stem extends to the lower chamber, the outer sleeve of the adjustable valve stem is provided with a compression spring, one end of the compression spring is connected to the top wall of the lower chamber, and the other end is connected to the adjustable valve stem, a sensing contact needle is installed at the bottom of the adjustable valve stem, and the sensing contact needle and the piezoresistive sensor element contact each other, thereby forming a complete closed-loop control system.

[0008] Preferably, the adsorption and transportation mechanism specifically includes a fixed base, two columns are installed on the top of the fixed base, a crossbeam is erected between the backs of the two columns, a vacuum pump is provided on the crossbeam, a slide rail is installed between the fronts of the two columns, a telescopic cylinder is installed on the slide rail, one end of the telescopic cylinder is connected to the slide rail, and the other end is provided with a slider, the slider is slidably connected to the slide rail, a mold base is installed on the front of the slider, the lower part of the mold base is fixedly connected to the bearing seat B, a movable rail plate is installed on the front of the mold base, the movable rail plate is slidably connected to the bearing seat A, the bearing seat A is connected to the gear seat through an axis, the bearing seat B is connected to the electric telescopic rod through an axis, the other end of the electric telescopic rod is connected to the rotating cylinder, the output end of the rotating cylinder is connected to the gear seat, and the movement of the rotating cylinder is precisely controlled by the controller.

[0009] Preferably, the gear seat has a built-in movable connection with a gear, and the axial center hole of the gear is connected to the output shaft of the servo motor installed on the front of the gear seat through a pin shaft. A hollow adsorption tube is also provided through the gear seat, and a tooth groove is provided on one side of the hollow adsorption tube, which is meshed with the gear. An adsorption head is provided at the bottom of the hollow adsorption tube, and the top of the hollow adsorption tube is connected to the vacuum pump through a pipe. A reset spring is provided on the outer sleeve of the hollow adsorption tube, one end of the reset spring is fixed on the gear seat, and the other end is connected to the top of the hollow adsorption tube. Rubber buffer columns are fixedly connected to one side of the top of the gear seat and one side of the top of the hollow adsorption tube.

[0010] The present invention provides a rotary material collecting device for bolt processing, which has the following beneficial effects: (1) The present invention forms a closed-loop control system through a piezoresistive sensor element, an adjustable valve stem, a sensor contact needle, etc., which can accurately sense the weight change of the bolt, convert the resistance value into an electrical signal and process it through a controller, judge the actual weight according to the preset weighing value, automatically control the opening and closing degree of the solenoid valve and the start and stop of the feeding motor, accurately control the bolt discharge rate and quantity, effectively avoid overflow of the collection funnel, and improve weighing accuracy and production efficiency.

[0011] (2) The present invention installs a sloped guide cover above the interior of the collecting funnel, and its outer surface is made of soft and smooth material, which not only reduces the friction damage of the bolts during the sliding process, but also guides the bolts to slide smoothly into the interior. With the precise control of the solenoid valve, it ensures that the bolts fall accurately into the designated position, improves the integrity and accuracy of material collection, reduces material damage and improves collection efficiency.

[0012] (3) The present invention utilizes the vacuum pump, hollow adsorption tube, gear seat, servo motor and other components to work together through the adsorption transport mechanism, and realizes the precise reset of the adsorption head through the linkage of the reset spring and the hollow adsorption tube, thereby improving the adsorption efficiency; the rubber buffer column effectively reduces mechanical impact and prolongs the service life of the equipment; the controller accurately controls the rotating cylinder, and the precise coordination of the gear seat and the servo motor is combined to achieve precise position adjustment of the adsorbed material, ensuring seamless connection during the transportation process, and realizing efficient and accurate material adsorption and transportation.

[0013] (4) The overall structure of the device of the present invention is compact, and the functional modules such as feeding, weighing, adsorption and transportation are integrated on the base. The layout of each component is reasonable, which is convenient for installation and maintenance. At the same time, the automatic control of each mechanism is realized through the controller. The operator only needs to start the corresponding equipment to complete a series of operations such as feeding, weighing, collecting and transporting the bolts, thereby reducing labor intensity and improving the level of production automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a front schematic view of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the feeding cylinder and weighing cylinder of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of A; Figure 5 This is a three-dimensional view of the adsorption and transportation mechanism of the present invention; Figure 6 This is a front view of the adsorption transport mechanism of the present invention; Figure 7 It is a back view of the adsorption transport mechanism of the present invention.

[0015] In the figure: base 21, feeding motor 22, feeding cylinder 23, feeding pipe 24, discharging pipe 25, spiral blade shaft 26, rotating base 31, rotating motor 32, rotating shaft 33, rotating table 34, weighing cylinder 35, collecting funnel 36, slope guide cover 37, solenoid valve 38, connecting plate 39, adjustable valve stem 41, compression spring 42, compression spring 42, sensor contact pin 43, piezoresistive sensor element housing 44, piezoresistive sensor element 45, cable 46, controller 47 , transport trolley 51, material receiving frame 52, funnel mold base 53, fixed base 61, column 62, beam 63, vacuum pump 64, slide rail 65, telescopic cylinder 66, slider 67, mold base 68, bearing seat A69, bearing seat B610, movable rail plate 611, bearing seat B610, electric telescopic rod 612, rotating cylinder 613, gear seat 614, gear 615, hollow adsorption tube 616, servo motor 617, return spring 618, rubber buffer column 619. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 are within the scope of protection of the present invention.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0018] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example

[0019] A preferred embodiment of a rotary material collecting device for bolt processing provided by the present invention is as follows: Figure 1-4As shown: A rotary material collecting device for bolt processing includes a base 21 and a transport trolley 51. A feeding mechanism is installed on the top of the base 21, and the feeding mechanism includes a feeding motor 22 installed on the top of the base 21. The output end housing of the feeding motor 22 is connected to a feeding barrel 23. A feeding pipe opening 24 is provided on one side of the feeding barrel 23, and a discharging pipe opening 25 is provided on the other side. A spiral blade shaft 26 is provided inside the feeding barrel 23. One end of the spiral blade shaft 26 passes through the feeding barrel 23 and is fixedly connected to the output end of the feeding motor 22. A rotating base 31 is also installed on the top of the base 21, and a rotating motor 32 is installed at the bottom of the rotating base 31. The output end of the rotating motor 32 is fixedly connected to a rotating shaft 33. One end of the rotating shaft 33 passes through the rotating base 31 and extends to the top, and is fixedly connected to the center position of the rotating table 34. Four weighing mechanisms are installed on the top of the rotating table 34. A collecting funnel 36 is correspondingly provided above the top of each weighing mechanism to ensure that the bolts discharged from the feeding cylinder 23 can accurately fall into the designated position. A connecting plate 39 is also installed on the top of the rotating base 31, and an adsorption transport mechanism is installed on the top of the connecting plate 39; A sloped flow guide cover 37 is installed above the interior of the collecting funnel 36, and its outer surface is made of soft and smooth material, which not only reduces the friction damage of the bolts during the sliding process, but also guides the bolts to slide smoothly into the interior. A solenoid valve 38 is provided inside the collecting funnel 36 below the sloped flow guide cover 37. Example

[0020] See also Figures 1-6 , and on the basis of Example 1, it is further obtained that: the weighing mechanism specifically includes a weighing cylinder 35 installed on a rotating table 34, the weighing cylinder 35 is internally configured as two chambers, divided into an upper chamber and a lower chamber, the upper chamber is adapted to the outer wall of the collecting funnel 36, the lower chamber is internally configured with a piezoresistive sensor element housing 44, the interior of the piezoresistive sensor element housing 44 is provided with a piezoresistive sensor element 45, the bottom of the piezoresistive sensor element 45 is connected to a controller 47 via a cable 46, and a controller 47 is located between the upper chamber and the lower chamber. An adjustable valve stem 41 is provided, the top of the adjustable valve stem 41 extends to the upper chamber and contacts the bottom of the collecting funnel 36, and the bottom of the adjustable valve stem 41 extends to the lower chamber. A compression spring 42 is provided on the outside of the adjustable valve stem 41, one end of the compression spring 42 is connected to the top wall of the lower chamber, and the other end is connected to the adjustable valve stem 41. A sensing contact needle 43 is installed at the bottom of the adjustable valve stem 41, and the sensing contact needle 43 contacts the piezoresistive sensor element 45, thereby forming a complete closed-loop control system.

[0021] A material receiving frame 52 is placed on the transport trolley 51 , and a funnel mold base 53 is built into the material receiving frame 52 for storing a plurality of collecting funnels 36 . Example

[0022] See also Figures 1-6 , and on the basis of Example 1, it is further obtained that: the adsorption transport mechanism specifically includes a fixed base 61, two columns 62 are installed on the top of the fixed base 61, a crossbeam 63 is set between the backs of the two columns 62, a vacuum pump 64 is set on the crossbeam 63, a slide rail 65 is installed between the fronts of the two columns 62, a telescopic cylinder 66 is installed on the slide rail 65, one end of the telescopic cylinder 66 is connected to the slide rail 65, and the other end is provided with a slider 67, the slider 67 is slidably connected to the slide rail 65, and the front of the slider 67 is installed A mold base 68 is installed, and a bearing seat B610 is fixedly connected to the lower part of the mold base 68. A movable rail plate 611 is installed on the front of the mold base 68. A bearing seat A69 is slidably connected to the movable rail plate 611. The bearing seat A69 is connected to the gear seat 614 via a shaft. The bearing seat B610 is connected to an electric telescopic rod 612 via a shaft. The other end of the electric telescopic rod 612 is connected to a rotary cylinder 613. The output end of the rotary cylinder 613 is connected to the gear seat 614. The movement of the rotary cylinder 613 is precisely controlled by the controller 47. The gear seat 614 has a built-in movable connection with a gear 615, and the axial center hole of the gear 615 is connected to the output shaft of the servo motor 617 installed on the front of the gear seat 614 through a pin shaft. A hollow adsorption tube 616 is also passed through the gear seat 614, and a tooth groove is provided on one side of the hollow adsorption tube 616, which is meshed with the gear 615. An adsorption head is provided at the bottom of the hollow adsorption tube 616, and the top of the hollow adsorption tube 616 is connected to the vacuum pump 64 through a pipeline. A reset spring 618 is provided on the outside of the hollow adsorption tube 616, and one end of the reset spring 618 is fixed on the gear seat 614, and the other end is connected to the top of the hollow adsorption tube 616. A rubber buffer column 619 is fixedly connected to one side of the top of the gear seat 614 and one side of the top of the hollow adsorption tube 616.

[0023] In this embodiment, the reset spring 618 and the hollow adsorption tube 616 are linked to ensure that the adsorption head is accurately reset, thereby improving the adsorption efficiency. At the same time, the rubber buffer column 619 effectively reduces mechanical impact, extends the service life of the equipment, improves the overall operating stability, and realizes efficient and accurate material adsorption and transportation process.

[0024] In this embodiment, by setting up precise matching between the gear seat 614 and the servo motor 617, the gear 615 is ensured to rotate smoothly. At the same time, the controller 47 adjusts the rotating cylinder 613 in real time, thereby achieving precise position adjustment of the adsorbed material and ensuring seamless connection during the transportation process.

[0025] When in use, the feeding motor 22 is started, and the feeding motor 22 drives the spiral blade shaft 26 to operate, so that the produced bolts are transported to the discharge pipe 25 in the feeding cylinder 23 and fall into the collecting funnel 36. When the bolts slide into the weighing cylinder 35 through the slope guide cover 37, the piezoresistive sensor element 45 will sense the adjustment change of the adjustable valve stem 41, so that the needle head of the sensing contact needle 43 moves on the piezoresistive sensor element 45, thereby changing the resistance value on the piezoresistive sensor element 45 and converting it into an electrical signal to be transmitted to the controller 47. The controller 47 performs corresponding calculations and logical judgments (control) according to the received electrical signal. The amplifier in the controller 47 amplifies the weak signal output by the sensor. The amplified signal is converted into a digital signal by the analog-to-digital converter in the controller 47 and output to the microprocessor. The microprocessor further processes the digital signal output by the analog-to-digital converter and makes judgments and controls according to a preset program to obtain a weighing value. Based on the preset weighing value, it is determined whether the actual weighing value exceeds the preset weighing value, thereby accurately controlling the opening and closing degree of the solenoid valve 38 and the start and stop of the feeding motor 22, thereby controlling the discharge rate and number of bolts in the feeding barrel 23 to prevent the collection funnel 36 from being filled with bolts and overflowing. Next, the controller 47 is used to start the electric telescopic rod 612, which drives the bearing seat A69 on the gear seat 614 to move downward, causing the hollow adsorption tube 616 to descend. The servo motor 617 is used to drive the gear 615 to rotate, and the gear 615 drives the hollow adsorption tube 616 to further descend, causing the adsorption head to be close to the surface of the slope guide cover 37, and the vacuum pump 64 is started. The adsorption head absorbs the slope guide cover 37 through vacuum adsorption, and the electric telescopic rod 612 is used again to make the adsorbed collection leak The bucket 36 rises from the weighing cylinder 35, and then the telescopic cylinder 66 and the rotating cylinder 613 are started. On the one hand, the telescopic cylinder 66 drives the slider 67 to move along the slide rail 65 to adjust the position of the mold base 68, that is, to adjust the position of the adsorbed collecting funnel 36; on the other hand, the rotating cylinder 613 drives the gear seat 614 to rotate, that is, to drive the adsorbed collecting funnel 36 to rotate to the specified angle, and the adsorbed collecting funnel 36 can be stably placed in the receiving frame 52 on the transport trolley 51, and finally transported away.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rotating material collecting device for bolt processing, comprising a base (21) and a transport trolley (51), characterized in that: A feeding mechanism is installed on the top of the base (21), and the feeding mechanism includes a feeding motor (22) installed on the top of the base (21), an output end housing cover of the feeding motor (22) is connected to a feeding barrel (23), a feeding pipe opening (24) is provided on one side of the feeding barrel (23), and a discharging pipe opening (25) is provided on the other side, and a spiral blade shaft (26) is provided inside the feeding barrel (23), one end of the spiral blade shaft (26) passes through the feeding barrel (23) and is fixedly connected to the output end of the feeding motor (22); A rotating base (31) is also installed on the top of the base (21), a rotating motor (32) is installed on the bottom of the rotating base (31), and the output end of the rotating motor (32) is fixedly connected to a rotating shaft (33), one end of the rotating shaft (33) passes through the rotating base (31) and extends to the top, and is fixedly connected to the center position of the rotating table (34), and four weighing mechanisms are installed on the top of the rotating table (34), and a collecting funnel (36) is correspondingly provided above the top of each weighing mechanism to ensure that the bolts discharged from the feeding barrel (23) can accurately fall into the designated position. A connecting plate (39) is also installed on the top of the rotating base (31), and an adsorption transport mechanism is installed on the top of the connecting plate (39); A material receiving frame (52) is placed on the transport trolley (51), and a funnel mold base (53) is built into the material receiving frame (52) for storing a plurality of collecting funnels (36).

2. A rotary material collecting device for bolt processing according to claim 1, characterized in that: A sloped flow guide cover (37) is installed above the interior of the collecting funnel (36), and its outer surface is made of soft and smooth material, which not only reduces the friction damage of the bolts during the sliding process, but also guides the bolts to slide smoothly into the interior. A solenoid valve (38) is provided inside the collecting funnel (36) below the sloped flow guide cover (37).

3. The rotary material collecting device for bolt processing according to claim 1, characterized in that: The weighing mechanism specifically includes a weighing cylinder (35) mounted on a rotating table (34), wherein the weighing cylinder (35) is internally provided with two chambers, namely an upper chamber and a lower chamber, wherein the upper chamber is adapted to the outer wall of the collecting funnel (36), and the lower chamber is internally provided with a piezoresistive sensor element housing (44), wherein the piezoresistive sensor element housing (44) is provided with a piezoresistive sensor element (45), and the bottom of the piezoresistive sensor element (45) is connected to a controller (47) via a cable (46), and an adjustable valve stem (47) is movably provided between the upper chamber and the lower chamber. 1), the top of the adjustable valve stem (41) extends to the upper chamber and contacts the bottom of the collecting funnel (36), and the bottom of the adjustable valve stem (41) extends to the lower chamber, the outer sleeve of the adjustable valve stem (41) is provided with a compression spring (42), one end of the compression spring (42) is connected to the top wall of the lower chamber, and the other end is connected to the adjustable valve stem (41), and a sensing contact needle (43) is installed at the bottom of the adjustable valve stem (41), and the sensing contact needle (43) and the piezoresistive sensing element (45) are in contact with each other, thereby forming a complete closed-loop control system.

4. The rotary material collecting device for bolt processing according to claim 1, characterized in that: The adsorption transport mechanism specifically includes a fixed base (61), two columns (62) are installed on the top of the fixed base (61), a crossbeam (63) is arranged between the backs of the two columns (62), a vacuum pump (64) is arranged on the crossbeam (63), a slide rail (65) is installed between the fronts of the two columns (62), a telescopic cylinder (66) is installed on the slide rail (65), one end of the telescopic cylinder (66) is connected to the slide rail (65), and the other end is provided with a slider (67), the slider (67) is slidably connected to the slide rail (65), and a mold base (68) is installed on the front of the slider (67). The lower part of the mold base (68) is fixedly connected to the bearing seat B (610), the front of the mold base (68) is installed with a movable rail plate (611), the movable rail plate (611) is slidably connected to the bearing seat A (69), the bearing seat A (69) is connected to the gear seat (614) through a shaft, the bearing seat B (610) is connected to the electric telescopic rod (612) through a shaft, the other end of the electric telescopic rod (612) is connected to the rotating cylinder (613), the output end of the rotating cylinder (613) is connected to the gear seat (614), and the action of the rotating cylinder (613) is precisely controlled by the controller (47).

5. The rotary material collecting device for bolt processing according to claim 4, characterized in that: The gear seat (614) has a built-in movable connection with a gear (615), and the axial center hole of the gear (615) is connected to the output shaft of the servo motor (617) installed on the front of the gear seat (614) through a pin shaft. A hollow adsorption tube (616) is also provided through the gear seat (614), and a tooth groove is provided on one side of the hollow adsorption tube (616) and meshed with the gear (615). An adsorption head is provided at the bottom of the hollow adsorption tube (616), and the top of the hollow adsorption tube (616) is connected to the vacuum pump (64) through a pipeline. A reset spring (618) is provided on the outside of the hollow adsorption tube (616), and one end of the reset spring (618) is fixed on the gear seat (614), and the other end is connected to the top of the hollow adsorption tube (616). A rubber buffer column (619) is fixedly connected to one side of the top of the gear seat (614) and one side of the top of the hollow adsorption tube (616).

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