Feeding mechanism of tobacco cutter and using method of feeding mechanism

Abstract

The invention discloses a feeding mechanism of a tobacco cutter, which comprises a screw rod gear shaft, threads are distributed on the surface of the screw rod gear shaft, a push broach block is connected to the outside of the screw rod gear shaft, two protective sleeves are symmetrically distributed on the upper side and the lower side of the push broach block, spring pieces are arranged in the two protective sleeves, compensation rings are arranged below the protective sleeves, and the compensation rings are connected with the screw rod gear shaft. The top of the lead screw gear shaft is sleeved with a shaft end shaft sleeve, the bottom of the lead screw gear shaft is sleeved with a shaft tail shaft sleeve, a plurality of lubricating oil containing holes are formed in the side wall face of the upper portion of the shaft end shaft sleeve, the annular edge position of the lower portion of the shaft end shaft sleeve and the side wall face of the shaft tail shaft sleeve, and lubricating rods are inserted into the lubricating oil containing holes. And a snap spring ring is clamped in the annular groove. The push broach block has the advantages of being reasonable in structural design, good in dustproof effect and the like, and dust shielding and protection can be conducted on the surface of the screw rod gear shaft all the time in the moving process of the push broach block through the protection sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco equipment, and in particular to a tobacco cutter feed mechanism and a use method thereof. Background Art

[0002] In the tobacco processing industry, the SQ218 stem cutter is an important piece of production equipment. Its cutter feed mechanism adopts a spatial crank-connecting rod planetary gear system structure, which can achieve precise and stable feed action of the cutter. During the tobacco stem processing, it undertakes the key task of cutting the stems to the specified size, playing a vital role in ensuring the quality of tobacco products and production efficiency. However, the current mechanism suffers from significant technical deficiencies. The feed mechanism lacks effective dust control measures. In actual production environments, a large amount of dust is inevitably present in the workshop. Furthermore, the grinding and wheel sharpening processes also generate numerous particulates and other contaminants. This dust and particulate matter easily enters the feed mechanism, particularly the needle roller bearing area, which is mounted on the outside of the feed bearing. The needle roller bearing is a critical component for the feed mechanism's precise transmission. Once dust and particulate matter enter, they rapidly disrupt its internal lubrication, causing a sharp increase in frictional resistance between the needle roller and the bearing's inner and outer races. Over time, the needle roller bearing frequently seizes and becomes damaged, seriously impacting the normal operation of the stem cutter. Frequent needle roller bearing seizures and damage not only significantly increase equipment maintenance costs and downtime, reducing production efficiency, but also affect the precision and quality of stem cutting due to inaccurate feed, ultimately negatively impacting the quality of tobacco products. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a feed mechanism for a tobacco cutter, which can solve the technical problem that the feed mechanism in the prior art lacks dust-proof measures, and dust and particles can easily enter its interior, causing components to get stuck and damaged. At the same time, the present invention also provides a method for using the feed mechanism of a tobacco cutter, which is applied to the feed mechanism of a tobacco cutter.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A tobacco cutter feed mechanism comprises a screw gear shaft, the surface of the screw gear shaft is provided with a thread, the outside of the screw gear shaft is connected to a push knife block, two protective sleeves are symmetrically provided on the upper and lower sides of the push knife block, spring parts are provided inside the two protective sleeves, and a compensation ring is provided below the protective sleeve, the top of the screw gear shaft is provided with a shaft end sleeve, and the bottom of the screw gear shaft is provided with a shaft end sleeve, and the upper side wall surface and the lower annular edge position of the shaft end sleeve and the side wall surface of the shaft end sleeve are provided with a plurality of lubrication oil holes, a lubrication rod is inserted into the inside of the lubrication oil hole, and an annular groove is provided at the end of the screw gear shaft, and a retaining spring ring is clamped inside the annular groove.

[0005] Furthermore, the screw gear shaft includes a driving screw and shaft teeth arranged on its surface, the shaft teeth are fixedly connected to the outer surface of one end of the driving screw, the surface of the driving screw below the shaft teeth is provided with a thread of a certain length, and the push knife block is threadedly connected to the outer surface of the driving screw.

[0006] Furthermore, the two protective sleeves provided on the upper and lower sides of the push knife block are respectively an upper sleeve and a lower sleeve. The upper sleeve and the lower sleeve are symmetrically symmetrically symmetrically embodied on the outside of the threads arranged on the surface of the screw gear shaft on the upper and lower sides of the push knife block. The upper sleeve and the lower sleeve can be folded and retracted under the action of the spring parts provided inside them. The compensation ring is provided on the surface of the screw gear shaft below the lower sleeve, and the bottom end face of the compensation ring is annular and has several balls embedded therein at equal intervals.

[0007] Furthermore, there are two annular grooves, which are respectively opened on the top end outer surface and the bottom end outer surface of the screw gear shaft.

[0008] The present invention also provides a method for using the feed mechanism of a tobacco cutter, which is applied to the feed mechanism of the tobacco cutter, and the specific steps include: Step S1: First, one of the protective sleeves is sleeved on the threaded outer portion of the lead screw gear shaft near its top, then the pusher block is threadedly installed on the outer surface of the lead screw gear shaft, and then the other protective sleeve is sleeved on the threaded outer portion of the lead screw gear shaft below the pusher block, and a compensation ring is used to seal and limit the position so that the two protective sleeves are firmly in contact with the upper and lower sides of the pusher block under the support of the spring member inside them, and then the shaft end sleeve and the shaft end sleeve are sleeved on the top and bottom of the lead screw gear shaft respectively, and finally, the retaining spring ring is clamped into the ring groove to limit the position of the shaft end sleeve and the shaft end sleeve sleeve sleeved on the top and bottom of the lead screw gear shaft to prevent them from falling off, thereby completing the component assembly of the feed mechanism of the tobacco cutter; Step S2: The tobacco cutter feed mechanism is installed at a predetermined position of the cutter, and the screw gear shaft rotates under the drive of an external power source. The pusher block threadedly connected to the screw gear shaft moves along the axial direction of the screw gear shaft under the drive of the screw gear shaft. During the movement of the pusher block, the two protective sleeves will be extended and retracted according to the movement distance of the pusher block under the action of the spring member provided therein, so as to always maintain dust protection for the threaded part of the screw gear shaft surface. The compensation ring ensures that the two protective sleeves are stably abutted against the upper and lower sides of the pusher block, thereby enhancing the protection effect. When the screw gear shaft rotates, the shaft end sleeve and the shaft end sleeve play a supporting and positioning role. The lubricating rod inserted into the lubrication oil hole continuously provides lubrication for the shaft end sleeve and the shaft end sleeve, reduces friction, and prevents external pollutants from entering. The retaining spring ring ensures that the shaft end sleeve and the shaft end sleeve will not fall off during the rotation of the screw gear shaft, thereby ensuring the stable operation of the entire transmission system, thereby achieving the purpose of using the screw gear shaft to drive the pusher block to complete the corresponding mechanical action.

[0009] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: 1. The present invention has the characteristics of reasonable structural design and good dustproof effect. By arranging foldable and retractable protective covers on the upper and lower sides of the pusher block, the present invention enables the protective covers to be retracted and extended when the pusher block moves on the surface of the screw gear shaft, thereby always shielding the surface of the screw gear shaft from dust, effectively preventing the entry of pollutants such as dust and particles, extending the service life of the screw gear shaft, and ensuring transmission accuracy. The provision of the compensation ring ensures that the protective cover firmly abuts against the upper and lower sides of the pusher block, thereby further enhancing the protective effect of the protective cover and avoiding the occurrence of component jamming and damage. 2. The present invention inserts a lubricating rod into the lubricating oil holes opened on the surfaces of the shaft end sleeve and the shaft end sleeve, which not only fully meets the lubricating oil film thickness requirement, ensures the lubrication effect when the shaft end sleeve and the shaft end sleeve rotate, reduces friction, but also fills the gap, effectively reduces the fitting clearance, and prevents dust, wear particles and moisture condensation from entering the interior of the shaft end sleeve and the shaft end sleeve to avoid affecting their rotation effect. Other beneficial effects of the present invention will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the separation of the screw gear shaft and the retaining spring ring of the present invention; Figure 3 It is a schematic structural diagram of the protective cover of the present invention; Figure 4is a schematic diagram of the interior of the protective cover of the present invention; Figure 5 It is a structural schematic diagram of the shaft end sleeve of the present invention; Figure 6 This is a schematic structural diagram of the shaft end sleeve of the present invention; Among them: 1. Screw gear shaft; 2. Push knife block; 3. Protective sleeve; 4. Spring part; 5. Compensating ring; 501, ball; 6. Shaft end sleeve; 7. Shaft end sleeve; 8. Lubrication oil hole; 9. Lubrication rod; 10. Ring groove; 11. Circlip. DETAILED DESCRIPTION

[0011] 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.

[0012] Example 1 like Figures 1 to 6 As shown, the present invention provides a tobacco cutter feed mechanism. It includes a screw gear shaft 1, the surface of which is provided with a thread, the outside of the screw gear shaft 1 is connected to a pusher block 2, and two protective sleeves 3 are symmetrically provided on the upper and lower sides of the pusher block 2, and spring parts 4 are provided inside the two protective sleeves 3, and a compensation ring 5 is provided below the protective sleeve 3. The top of the screw gear shaft 1 is provided with a shaft end sleeve 6, and the bottom of the screw gear shaft 1 is provided with a shaft end sleeve 7. Several lubricating oil holes 8 are provided on the upper side wall surface and the lower annular edge position of the shaft end sleeve 6 and the side wall surface of the shaft end sleeve 7. A lubricating rod 9 is inserted into the lubricating oil hole 8, and an annular groove 10 is provided at the end of the screw gear shaft 1, and a retaining spring ring 11 is clamped inside the annular groove 10.

[0013] In the embodiment described in the present invention, the screw gear shaft 1 includes a driving screw and shaft teeth arranged on its surface. The shaft teeth are fixedly connected to the outer surface of one end of the driving screw. The surface of the driving screw below the shaft teeth is provided with a thread of a certain length. The pusher block 2 is threadedly connected to the outer surface of the driving screw. Through the rotation of the screw gear shaft 1, the pusher block 2 can be driven to move axially along the driving screw.

[0014] In the embodiment described in the present invention, the two protective sleeves 3 provided on the upper and lower sides of the pusher block 2 are respectively an upper sleeve and a lower sleeve, and the upper sleeve and the lower sleeve are symmetrically sleeved on the outside of the threads arranged on the surface of the screw gear shaft 1 on the upper and lower sides of the pusher block 2. The upper sleeve and the lower sleeve can be folded and retracted under the action of the spring member 4 provided therein. When the pusher block 2 moves on the surface of the screw gear shaft 1, the protective sleeve 3 can be retracted and retracted accordingly, and the threaded part of the surface of the screw gear shaft 1 is always shielded from dust, effectively preventing pollutants such as dust and particles from entering the thread gap, preventing the thread from being worn due to pollution, and extending the life of the screw gear shaft. 1, ensuring the transmission accuracy; the compensation ring 5 is sleeved on the surface of the screw gear shaft 1 below the lower sleeve, and under the support of the spring member 4 inside the protective sleeve 3, the compensation ring 5 can make the protective sleeve 3 firmly abut against the upper and lower sides of the pusher block 2 to further enhance the protective effect of the protective sleeve 3, and the bottom end surface of the compensation ring 5 is annular and embedded with a number of balls 501 at equal intervals. When the compensation ring 5 is subjected to force, the balls 501 can make the compensation ring 5 evenly stressed, avoiding the problem of excessive local wear or poor sealing due to uneven force, thereby improving the service life and protection reliability of the compensation ring 5.

[0015] In the embodiment described in the present invention, the material used for the shaft end sleeve 6 and the shaft end sleeve 7 is high-strength brass, which has the characteristics of high strength, high hardness, corrosion resistance, and good machinability. The sliding bearing made of high-strength brass used in conjunction with the shaft end sleeve 6 and the shaft end sleeve 7 can meet the applicable requirements of small load, low speed, and low temperature rise, and can be used in corrosive media; inserting the lubricating rod 9 into the lubricating oil hole 8 can not only fully meet the lubricating oil film thickness requirement, ensure the lubrication effect of the shaft end sleeve 6 and the shaft end sleeve 7 when rotating, reduce friction, but also fill the gap, effectively reduce the fitting clearance, and prevent dust, wear particles and moisture condensation from entering the interior of the shaft end sleeve 6 and the shaft end sleeve 7, avoid affecting their rotation effect, and ensure the stability and reliability of the equipment operation; Specifically, the lubricating rod 9 is mainly made of a cylindrical polymer filled rod mixed with solid lubricants such as graphite and molybdenum disulfide. The materials and methods for making the lubricating rod 9 belong to the existing technology and are not within the scope of protection claimed by the present invention.

[0016] In the embodiment of the present invention, there are two annular grooves 10, which are respectively opened on the top outer surface and the bottom outer surface of the screw gear shaft 1. By inserting the retaining spring ring 11 into the annular groove 10, the position of the shaft end sleeve 6 and the shaft end sleeve 7 installed on the top and bottom of the screw gear shaft 1 can be limited. During the rotation of the screw gear shaft 1, the shaft end sleeve 6 and the shaft end sleeve 7 can be effectively prevented from falling off, thereby ensuring the accuracy of the position of each component and the stability of the structure.

[0017] Example 2 The present invention also provides a method for using the feed mechanism of a tobacco cutter, which is applied to the feed mechanism of the tobacco cutter, and the specific steps include: Step S1: First, one of the protective sleeves 3 is sleeved on the threaded outer portion of the lead screw gear shaft near its top, then the pusher block 2 is threadedly installed on the outer surface of the lead screw gear shaft, and then the other protective sleeve 3 is sleeved on the threaded outer portion of the lead screw gear shaft below the pusher block 2, and the compensation ring 5 is used to seal and limit the position so that the two protective sleeves 3 are firmly in contact with the upper and lower sides of the pusher block 2 under the support of the spring member 4 inside. Subsequently, the shaft end sleeve 6 and the shaft end sleeve 7 are respectively sleeved on the top and bottom of the lead screw gear shaft, and finally, the retaining ring 11 is inserted into the ring groove 10 to limit the position of the shaft end sleeve 6 and the shaft end sleeve 7 sleeved on the top and bottom of the lead screw gear shaft 1 to prevent them from falling off, thereby completing the component assembly of the feed mechanism of the tobacco cutter; Step S2: Install the tobacco cutter feed mechanism at a predetermined position of the cutter, and the screw gear shaft 1 rotates under the drive of an external power source. The pusher block 2 threadedly connected to the screw gear shaft 1 moves along the axial direction of the screw gear shaft 1 under the drive of the screw gear shaft 1. During the movement of the pusher block 2, the two protective sleeves 3 will be extended and retracted according to the moving distance of the pusher block 2 under the action of the spring member 4 provided therein, so as to always maintain dust protection on the threaded portion of the screw gear shaft 1. The compensation ring 5 ensures the stability of the two protective sleeves 3. The abutment on the upper and lower sides of the pusher block 2 enhances the protection effect. When the screw gear shaft 1 rotates, the shaft end sleeve 6 and the shaft end sleeve 7 play a supporting and positioning role. The lubricating rod 9 inserted into the lubricating oil hole 8 continuously provides lubrication for the shaft end sleeve 6 and the shaft end sleeve 7, reducing friction and preventing external pollutants from entering. The retaining spring ring 11 ensures that the shaft end sleeve 6 and the shaft end sleeve 7 will not fall off during the rotation of the screw gear shaft 1, ensuring the stable operation of the entire transmission system, thereby achieving the purpose of using the screw gear shaft 1 to drive the pusher block 2 to complete the corresponding mechanical action.

[0018] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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 can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tobacco cutter feed mechanism, characterized by: It includes a screw gear shaft, the surface of which is provided with a thread, the outside of the screw gear shaft is connected to a push knife block, two protective sleeves are symmetrically provided on the upper and lower sides of the push knife block, spring parts are provided inside the two protective sleeves, and a compensation ring is provided below the protective sleeve. The top of the screw gear shaft is provided with a shaft end sleeve, and the bottom of the screw gear shaft is provided with a shaft end sleeve. Several lubrication holes are provided on the upper side wall surface and the lower annular edge position of the shaft end sleeve and the side wall surface of the shaft end sleeve. A lubrication rod is inserted into the inside of the lubrication hole, and an annular groove is provided at the end of the screw gear shaft, and a retaining spring ring is clamped inside the annular groove.

2. The tobacco cutter feed mechanism according to claim 1, characterized in that: The screw gear shaft includes a driving screw and shaft teeth arranged on its surface. The shaft teeth are fixedly connected to the outer surface of one end of the driving screw. The surface of the driving screw below the shaft teeth is provided with a thread of a certain length, and the push knife block is threadedly connected to the outer surface of the driving screw.

3. The tobacco cutter feed mechanism according to claim 1, characterized in that: The two protective sleeves provided on the upper and lower sides of the push knife block are respectively an upper sleeve and a lower sleeve. The upper sleeve and the lower sleeve are symmetrically symmetrically symmetrically embossed on the outside of the threads arranged on the surface of the screw gear shaft on the upper and lower sides of the push knife block. The upper sleeve and the lower sleeve can be folded and retracted under the action of the spring parts provided inside them. The compensation ring is provided on the surface of the screw gear shaft below the lower sleeve, and the bottom end surface of the compensation ring is annular and has a plurality of balls embedded therein at equal intervals.

4. The tobacco cutter feed mechanism according to claim 1, characterized in that: There are two annular grooves, which are respectively opened on the top end outer surface and the bottom end outer surface of the screw gear shaft.

5. A method for using a feed mechanism of a tobacco cutter, the method being applied to the feed mechanism of a tobacco cutter according to any one of claims 1 to 4, characterized in that: The specific steps include: Step S1: First, one of the protective sleeves is sleeved on the threaded outer portion of the lead screw gear shaft near its top, then the pusher block is threadedly installed on the outer surface of the lead screw gear shaft, and then the other protective sleeve is sleeved on the threaded outer portion of the lead screw gear shaft below the pusher block, and a compensation ring is used to seal and limit the position so that the two protective sleeves are firmly in contact with the upper and lower sides of the pusher block under the support of the spring member inside them, and then the shaft end sleeve and the shaft end sleeve are sleeved on the top and bottom of the lead screw gear shaft respectively, and finally, the retaining spring ring is clamped into the ring groove to limit the position of the shaft end sleeve and the shaft end sleeve sleeve sleeved on the top and bottom of the lead screw gear shaft to prevent them from falling off, thereby completing the component assembly of the feed mechanism of the tobacco cutter; Step S2: The tobacco cutter feed mechanism is installed at a predetermined position of the cutter, and the screw gear shaft rotates under the drive of an external power source. The pusher block threadedly connected to the screw gear shaft moves along the axial direction of the screw gear shaft under the drive of the screw gear shaft. During the movement of the pusher block, the two protective sleeves will be extended and retracted according to the movement distance of the pusher block under the action of the spring member provided therein, so as to always maintain dust protection for the threaded part of the screw gear shaft surface. The compensation ring ensures that the two protective sleeves are stably abutted against the upper and lower sides of the pusher block, thereby enhancing the protection effect. When the screw gear shaft rotates, the shaft end sleeve and the shaft end sleeve play a supporting and positioning role. The lubricating rod inserted into the lubrication oil hole continuously provides lubrication for the shaft end sleeve and the shaft end sleeve, reduces friction, and prevents external pollutants from entering. The retaining spring ring ensures that the shaft end sleeve and the shaft end sleeve will not fall off during the rotation of the screw gear shaft, thereby ensuring the stable operation of the entire transmission system, thereby achieving the purpose of using the screw gear shaft to drive the pusher block to complete the corresponding mechanical action.

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