A double closed rail support sealed type material conveying system

Abstract

The present application relates to the field of material conveying, and specifically discloses a double-layer closed guide rail support sealed material conveying system. A stepped rail support base is fixed to the ground, and a sealed main frame body is installed thereon. A double-layer closed guide rail support assembly is installed on the upper and lower sides of a sealed shafting driving unit assembly and a sealed slide rail support driven tension assembly, forming a whole motion track support. An anti-rollover sealed elastic chain link assembly is arranged between the upper and lower guide rails, and a split V-shaped wheel is supported by a variable stiffness V-shaped guide rail. A single pendulum wheel trigger opening and closing gripper is installed on the outer side mounting plate of the chain link assembly, and the opening and closing of the gripper is controlled by a single trigger mechanism. The system adopts a fully sealed design, effectively preventing dust from entering and accumulating, and can adapt to changes in chain tension and vibration impact. The split V-shaped wheel structure can cope with track dust accumulation and wear, and is suitable for food, medicine and other high cleanliness and high stability material conveying scenes.

Description

Technical Field

[0001] This invention relates to the field of material conveying technology, and more specifically to a double-layer closed guide rail supported sealed material conveying system. Background Technology

[0002] In the field of modern packaging machinery, the stability and cleanliness of the material conveying system directly affect the operating efficiency of the equipment and the hygiene indicators of the products. Traditional packaging machine conveying systems mostly adopt an open single guide rail and guide groove support structure for the conveyor chain, and the guide rail in its motion path is usually designed with a disconnected layout at the driven end to accommodate the chain tensioning requirements. This non-closed guide rail causes the conveyor chain to lose continuous support at the driven tensioning end, which can easily lead to swaying or even tipping accidents during high-speed operation. At the same time, the support of traditional guide rails for chain links is mostly a rigid structure, which is prone to rigid impacts during long-term operation. Moreover, existing tensioning mechanisms mostly use screws to achieve fixed displacement tensioning, which cannot adjust the tension force in real time according to the chain wear or load fluctuations, thus aggravating the vibration and noise of the transmission system.

[0003] Furthermore, open guide rails and chain link assemblies make it difficult to achieve a full circumferential seal when transporting powdery materials. Material debris and dust easily accumulate on the guide rail surface or intrude into the transmission pair gaps, causing chain link jamming and wear. In hygiene-sensitive industries such as food and pharmaceuticals, this dust accumulation and contamination problem is particularly prominent, making it difficult to meet the requirements of a high-cleanliness production environment. In addition, existing packaging machine transport grippers often use multiple independent triggering mechanisms to achieve clamping and opening actions, which not only results in a complex structure but also leads to a tight equipment layout, hindering compact design and maintenance.

[0004] While some existing conveyor chain systems attempt to improve guide rail structure or sealing methods, significant shortcomings remain. For example, the product clamping and turning conveyor chain system disclosed in Publication No. CN216470265U, although simple in structure, is unsuitable for dusty environments, as accumulated dust easily leads to chain link wear and jamming; its single guide rail support also fails to meet the requirements of high load and high stability. The cross-chain suspended conveyor device disclosed in Publication No. CN119976192A, while improving operational stability through its Z-shaped guide rails, has a complex and non-compact structure, unable to effectively withstand the overturning moment caused by the material transport cantilever. Furthermore, its fixed traction guide rail also cannot achieve continuous closed support at the driven tension end, and rigid contact still exacerbates impact and wear. Therefore, there is an urgent need to develop a material conveying system that combines high sealing performance, high stability, and a compact structure to meet the demands of modern packaging production with high cleanliness and high load requirements. Summary of the Invention

[0005] In view of this, the present invention provides a double-layer closed guide rail supported sealed material conveying system to solve the technical problems in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention discloses a double-layer closed guide rail supported and sealed material conveying system, comprising: a stepped track support base, a single pendulum wheel triggered opening and closing gripper, an anti-tipping sealed elastic chain link assembly, a double-layer closed guide rail support assembly, and a sealed shaft drive unit assembly;

[0008] The stepped track support base is provided with a stepped track for supporting and triggering the single pendulum wheel to trigger the opening and closing gripping action;

[0009] The single pendulum wheel trigger opening and closing gripper is installed on the outside of the anti-tipping sealed elastic chain link assembly;

[0010] The sealed shaft drive unit assembly is installed in the hollow area enclosed by the double-layer closed guide rail support assembly; the sealed shaft drive unit assembly meshes with the anti-tipping sealed elastic chain link assembly to achieve power transmission;

[0011] The anti-tipping sealed elastic chain link assembly is installed between the double-layer closed guide rail support assembly;

[0012] The V-shaped guide rail of the double-layer closed guide rail support assembly supports the split V-shaped wheel on the anti-tipping sealed elastic chain link assembly.

[0013] Preferably, the above-mentioned double-layer closed guide rail supported sealed material conveying system further includes: a sealed main frame and a sealed slide rail supported driven tensioning assembly; both the sealed main frame and the sealed slide rail supported driven tensioning assembly are installed in the internal hollow area enclosed by the double-layer closed guide rail support assembly; the sealed shaft system drive unit assembly is installed on one side of the sealed main frame, and the sealed slide rail supported driven tensioning assembly is installed on the other side of the sealed main frame; the sealed slide rail supported driven tensioning assembly controls the tension of the conveyor chain system.

[0014] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the single pendulum wheel triggered opening and closing gripper has an overall structure arranged symmetrically from left to right, including a housing, a transmission component, and clamping fingers; the transmission component is placed inside the housing; the clamping fingers perform opening and closing actions through the transmission component.

[0015] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the anti-tipping sealed elastic chain link assembly includes a sealed double V supported load chain link and an unloaded chain link; the sealed double V supported load chain link is movably connected to the unloaded chain link.

[0016] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the sealed double V-support load chain link includes a main frame, a double V-shaped roller floating assembly, and a central shaft sealing assembly; the main frame is used to bear external working loads and provide a mounting base; the double V-shaped roller floating assembly is hinged to both sides of the main frame, and obtains axial elastic floating capability through internal inner and outer compression spring groups, so that the V-shaped wheels adaptively conform to the surface of the support rail; the central shaft sealing assembly seals the central shaft.

[0017] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the sealed double V-support load chain link, wherein the main frame includes a lower load chain link plate, a load mounting plate, and an upper load chain link plate; the double V-shaped roller floating assembly includes a V-shaped wheel bracket, a V-shaped wheel shaft, a V-shaped wheel buckle cover, an outer compression spring for the roller, a split V-shaped wheel, an inner compression spring for the roller, a roller sealing ring, a V-shaped wheel positioning sleeve, a hole elastic retaining ring, a washer, a chain link shaft, and a deep groove ball bearing; the central shaft sealing assembly includes a sealing intermediate cylinder, an intermediate cylinder positioning sleeve, a skeleton sealing ring, a needle roller bearing, and a sealing ring; the upper load chain link plate and the lower load chain link plate are installed on the upper and lower sides of the load mounting plate, the chain link shaft is hinged to the upper and lower load chain link plates through the needle roller bearing, the V-shaped wheel bracket is installed at the upper and lower ends of the chain link shaft, the sealing ring and the washer are installed between the V-shaped wheel bracket and the upper load chain link plate, and the split V-shaped wheels are symmetrically installed on the left and right sides of the center shaft through the V-shaped wheel shaft. The V-shaped wheel bracket is used to fix the V-shaped wheel shaft. V-shaped wheel positioning sleeves are installed on the left and right sides of the interior of the split V-shaped wheel. The outer side of the V-shaped wheel positioning sleeve is fixed with an elastic retaining ring through a hole. The inner and outer compression springs of the rollers are installed inside the split V-shaped wheel and pass through the V-shaped wheel shaft. A V-shaped wheel buckle cover is installed between the outer end face of the split V-shaped wheel and the V-shaped wheel bracket. Grooves are provided on the outer circular surface and inner plane of the split V-shaped wheel to install the roller sealing ring. Gaps are left between the left and right split V-shaped wheels and between the split V-shaped wheels and the V-shaped wheel buckle cover. The split V-shaped wheel moves axially under the action of the inner and outer compression springs. A sealing intermediate cylinder is installed in the middle of the chain link shaft. Deep groove ball bearings are installed on the upper and lower sides of the sealing intermediate cylinder. An intermediate cylinder positioning sleeve is installed outside the deep groove ball bearings. A skeleton sealing ring is installed between the intermediate cylinder positioning sleeve and the sealing intermediate cylinder to seal the sealing intermediate cylinder.

[0018] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the double-layer closed guide rail support assembly includes an upper guide rail and a lower guide rail; wherein the upper guide rail is provided with an alignment guide positioning key at the guide rail connection; the sealed slide rail support driven tensioning assembly is guided by the alignment guide positioning key when it is tensioned outward; the lower guide rail connection is provided with a boss and a groove to make the anti-tipping sealed elastic chain link assembly achieve a transition at the connection.

[0019] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the upper guide rail includes an upper straight section guide rail support base and an upper arc section guide rail support base; the lower guide rail includes a lower straight section guide rail support base, a straight section V-shaped guide rail, a lower arc section guide rail support base, and an arc section V-shaped guide rail.

[0020] The upper linear section guide rail support base and the lower linear section guide rail support base are respectively installed at the upper and lower mounting guide bars of the sealing main frame. The linear section V-shaped guide rail is installed in the grooves of the upper linear section guide rail support base and the lower linear section guide rail support base. The upper arc section guide rail support base and the lower arc section guide rail support base are respectively installed at the upper and lower mounting plates of the sealing shaft system drive unit assembly and the upper and lower mounting plates of the sealing slide rail support driven tensioning assembly. The arc section V-shaped guide rail is installed in the groove of the arc section guide rail support base.

[0021] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the sealed shaft drive unit assembly includes a drive assembly mounting bracket, an upper end cover, a deep groove ball bearing, a nylon preload pad, a hub positioning sleeve, a drive wheel disc, a drive wheel axle, a tapered roller bearing, a lower end cover, a reducer, a motor, a sealing ring, and a skeleton sealing ring. The motor is connected to the reducer and installed at the stop of the lower end cover. The lower end cover is installed below the drive assembly mounting bracket and a sealing ring is installed at the connection. The tapered roller bearing is installed above the lower end cover. The drive wheel axle and the reducer output shaft are connected for transmission via a common flat key. The shoulder of the drive wheel axle rests against the inner ring of the tapered roller bearing. The suspended portion between the drive wheel axle and the drive assembly mounting bracket is sealed by a skeleton seal ring. The drive wheel disc is mounted on the middle mounting portion of the drive assembly mounting bracket via a key connection and is positioned by the shoulder of the drive wheel axle and sealed by a seal ring at the shoulder groove. The hub positioning sleeve is mounted above the drive wheel disc and is sealed by the seal ring and the skeleton seal ring. The nylon preload washer is mounted above the hub positioning sleeve. The deep groove ball bearing is mounted above the nylon preload washer. The upper end cover is mounted above the drive assembly mounting bracket and a seal ring is installed at the inner ring connection.

[0022] Preferably, in the above-mentioned double-layer closed guide rail supported sealed material conveying system, the sealed slide rail supported driven tensioning assembly includes a driven tensioning bracket, a tensioning slider sealing cylinder, a linear slide rail, a slider, a sealing ring, and a tensioning cylinder. The tensioning slider sealing cylinder is installed below the driven tensioning bracket. The upper and lower surfaces of the tensioning slider sealing cylinder are provided with grooves, and the sealing ring is installed in the grooves. The slider inside the tensioning slider sealing cylinder is installed on the driven tensioning bracket. The linear slide rail inside the tensioning slider sealing cylinder is installed on the sealing main frame mounting plate. The tensioning cylinder is installed inside the sealing main frame on the same side as the sealed slide rail supported driven tensioning assembly, and the mounting port on the sealing main frame is sealed by a sealing end cap. The slider below the sealed slide rail supported driven tensioning assembly is guided by the linear slide rail, and the tensioning cylinder pushes out the sealed slide rail supported driven tensioning assembly to achieve tensioning of the conveyor chain system.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. This invention provides a double-layer closed guide rail supported sealed material conveying system, wherein the double-layer closed guide rail support assembly uses upper and lower double-layer V-shaped guide rails to firmly support the split V-shaped wheels on the intermediate chain link assembly. The meshing form of the V-shaped guide rails and the split V-shaped wheels can not only suppress the tipping caused by the load cantilever, but also prevent dust from accumulating on the guide rails and rollers, and can play a self-cleaning role during operation. The split V-shaped wheels are equipped with compression springs inside, which can adapt to the situation of dust accumulation on the track and roller wear. This not only ensures that the split V-shaped wheels are in close contact with the track, but also avoids the upper and lower rollers being too tight due to dust accumulation on the track. Furthermore, the guide rail support assembly adopts the form of a rigid support base plus a flexible V-shaped guide rail. This combination ensures the overall rigid support, while the flexible guide rails in the contact part can absorb the vibration and impact during the movement of the conveyor chain, increasing the operational stability.

[0025] 2. The present invention provides a double-layer closed guide rail support sealing material conveying system, wherein the driven tensioning side is also equipped with an arc segment guide rail support component. At the junction of the arc segment and the straight segment guide rail support component, the arc segment guide rail support component can be in the same plane as the straight segment guide rail support component when the driven tensioning component moves outward, by means of an alignment guide positioning key. Furthermore, the straight segment V-shaped guide rail boss and the arc segment V-shaped guide rail groove cooperate to allow the sealing chain link component to pass smoothly through this transition section, thereby realizing that the guide rail support component forms a full circumferential support following the motion trajectory.

[0026] 3. The present invention provides a double-layer closed guide rail supported sealed material conveying system, wherein a single pendulum wheel triggers the opening and closing of the clamping hand and the stepped track support rail to achieve single-wheel and single-track triggering for clamping and clamping arm opening and closing. When the stepped track is at different heights, it triggers the pendulum wheel to swing at different angles, driving the stepped trigger slider to move. The protrusions at different positions of the slider push the synchronous trigger push rod or T-shaped trigger push rod to drive the left and right side clamping or clamping arm opening and closing. This not only makes the structure compact and reduces costs, but also ensures the synchronicity of the movement of the left and right symmetrical mechanism.

[0027] 4. The present invention provides a double-layer closed guide rail supported sealed material conveying system, wherein the sealed chain link assembly and the sealed drive unit assembly achieve full system sealing during material transportation by means of sealing ring and skeleton sealing cooperation, preventing material debris and dust from accumulating or intruding into the transmission pair gap, avoiding chain link jamming, extending the service life of the entire system, and reducing the risk of contamination in hygiene-sensitive industries such as food and medicine.

[0028] 5. The present invention provides a double-layer closed guide rail supported sealed material conveying system, wherein the sealed slide rail supports the driven tensioning component and the tensioning cylinder to simultaneously achieve tensioning of the conveying chain system. This structure can make the chain adaptively adjust the tension force according to the wear state or load fluctuation through pneumatic tensioning, thereby reducing the vibration and noise of the transmission system. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the double-layer closed guide rail supported sealed material conveying system of the present invention;

[0031] Figure 2 This is a schematic diagram of the stepped track support base structure in this invention;

[0032] Figure 3 This is a schematic diagram of the overall structure of the single-balance wheel-triggered opening and closing gripper in this invention;

[0033] Figure 4 This is a schematic diagram of the internal structure of the single-balance wheel-triggered opening and closing gripper in this invention;

[0034] Figure 5 This is a schematic diagram of the anti-tipping sealing elastic chain link assembly structure in this invention;

[0035] Figure 6This is a schematic diagram of the sealed double V-supported load chain link structure in this invention;

[0036] Figure 7 This is a schematic diagram of the structure of the double-layer closed guide rail support assembly in this invention;

[0037] Figure 8 This is a schematic diagram of the docking structure between the straight segment V-shaped guide rail and the circular arc segment V-shaped guide rail of the present invention;

[0038] Figure 9 This is a schematic diagram of the overall structure of the sealed shaft drive unit assembly in this invention;

[0039] Figure 10 This is a cross-sectional view of the sealing layout of the sealed shaft drive unit assembly in this invention;

[0040] Figure 11 This is a schematic diagram of the structure of the sealed slide rail support driven tensioning assembly in this invention;

[0041] Figure label:

[0042] Stepped track support base 1; Stepped track 101; Welded base 102; Single swing wheel triggered opening and closing gripper 2; Lower cover of gripper arm 201; Upper cover of gripper arm 202; Packaging bag 203; Upper cover of gripper base 204; Lower cover of gripper base 205; Swing wheel torsion spring 206; Triggering swing wheel 207; Crank handle torsion spring 208; Torsion base 209; Trigger crank handle 210; Outer gripper fingers 211; Inner gripper fingers 212; Inner gripper finger pull rod 213; Outer gripper finger pull rod 214; Synchronous trigger push rod 215; Opening and closing rack 216; Opening 217 gear; 218 gear tie rod; 219 T-shaped trigger push rod; 220 linear bearing; 221 opening and closing compression spring; 222 stepped trigger slider; 3 anti-tipping sealed elastic chain link assembly; 31 sealed double V-support load chain link; 3101 lower load chain link plate; 3102 load mounting plate; 3103 upper load chain link plate; 3104 V-wheel bracket; 3105 V-wheel axle; 3106 V-wheel buckle cover; 3107 outer compression spring of roller; 3108 split V-wheel; 3109 inner compression spring of roller; 3110 roller sealing ring. V-shaped wheel positioning sleeve 3111; Hole elastic retaining ring 3112; Washer 3113; Chain link shaft 3114; Deep groove ball bearing 3115; Sealed intermediate cylinder 3116; Intermediate cylinder positioning sleeve 3117; Skeleton sealing ring 3118; Needle roller bearing 3119; Sealing ring 3120; Unloaded chain link 32; Double-layer closed guide rail support assembly 4; Upper straight section guide rail support base 401; Upper arc section guide rail support base 402; Alignment guide positioning key 403; Lower straight section guide rail support base 404; Straight section V-shaped guide rail 405; Lower 406: A circular arc section guide rail support base; 407: A circular arc section V-shaped guide rail; 5: A sealed shaft drive unit assembly; 501: A drive assembly mounting bracket; 502: An upper end cover; 503: A nylon preload pad; 504: A hub positioning sleeve; 505: A drive wheel disc; 506: A drive wheel axle; 507: A tapered roller bearing; 508: A lower end cover; 509: A reducer; 510: A motor; 6: A sealed main frame; 7: A sealed slide rail support driven tensioning assembly; 701: A driven tensioning bracket; 702: A tensioning slider sealing cylinder; 703: A linear slide rail; 704: A slider; 705: A tensioning cylinder. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] This embodiment provides a double-layer closed guide rail supported sealed material conveying system, such as... Figure 1As shown, it includes a stepped track support base 1, a single pendulum wheel triggered opening and closing gripper 2, an anti-tipping sealed elastic chain link assembly 3, a double-layer closed guide rail support assembly 4, a sealed shaft system drive unit assembly 5, a sealed main frame 6, and a sealed slide rail support driven tensioning assembly 7. The stepped track support base 1 is installed on the ground as a base. The sealed main frame 6 is installed on the upper plane of the stepped track support base 1. The double-layer closed guide rail support assembly 4 is installed on the upper and lower sides of the sealed main frame 6, the sealed shaft drive unit assembly 5, and the sealed slide rail support driven tensioning assembly 7 by bolts. The guide rail forms a full-circumference support following the motion trajectory. The anti-tipping sealed elastic chain link assembly 3 is installed between the double-layer closed guide rail support assemblies 4. The variable stiffness V-shaped guide rail of the double-layer closed guide rail support assembly 4 supports the split V-shaped wheel on the anti-tipping sealed elastic chain link assembly 3. The single pendulum wheel trigger opening and closing gripper 2 is installed on the mounting plate facing outward of the anti-tipping sealed elastic chain link assembly 3 by bolts. The sealed shaft drive unit assembly 5 is installed on one side of the sealed main frame 6 by bolts. The sealed slide rail support driven tensioning assembly 7 is installed on the other side of the sealed main frame 6.

[0045] like Figure 2 As shown, the stepped track support base 1 includes a stepped track 101 and a welding base 102. The stepped track 101 is installed on the upper plane of the welding base 102. The stepped track 101 supports the triggering balance wheel on the single balance wheel trigger opening and closing gripper 2. The different heights of the stepped track 101 cause the triggering balance wheel to be at different heights, thereby causing the single balance wheel trigger opening and closing gripper 2 to perform different actions.

[0046] like Figure 3 and Figure 4As shown, the single-balance wheel triggered opening and closing gripper 2 includes a lower cover 201 for the gripper arm, an upper cover 202 for the gripper arm, a packaging bag 203, an upper cover 204 for the gripper base, a lower cover 205 for the gripper base, a balance wheel torsion spring 206, a trigger balance wheel 207, a crank handle torsion spring 208, a torsion base 209, a trigger crank handle 210, an outer gripper finger 211, an inner gripper finger 212, an inner gripper finger pull rod 213, an outer gripper finger pull rod 214, a synchronous trigger push rod 215, an opening and closing rack 216, an opening and closing gear 217, a gear pull rod 218, a T-shaped trigger push rod 219, a linear bearing 220, an opening and closing compression spring 221, and a stepped trigger slider 222. The lower cover 201 and the upper cover 202 of the clamping arm are bolted together to form a clamping arm. The upper cover 204 and the lower cover 205 of the clamping base are bolted together to form a clamping base. The triggering balance wheel 207 is hinged to a support in the middle below the lower cover 205 of the clamping base. The triggering balance wheel 207 is in contact with the stepped track 101 on the stepped track support base 1. During movement, the stepped track 101 supports the triggering balance wheel 207 at different heights, thereby realizing different actions of the single balance wheel triggering the opening and closing of the clamping hand 2. The balance wheel torsion spring 206 resets the gripper. The crank torsion spring 208, torsion base 209, and trigger crank 210 are coaxially mounted at the mounting holes of the clamping arm lower cover 201. The torsion base 209 and the trigger crank 210 are fixedly connected by a pin and can rotate coaxially. The inner clamping finger lever 213 and the outer clamping finger lever 214 are hinged on one side to the mounting holes at both ends of the torsion base 209, and on the other side to the outer clamping finger 211 and the inner clamping finger 212. The outer clamping finger 211 and the inner clamping finger 212 are mounted on the clamping arm lower cover 201. At the other two mounting holes of cover 201, the swing end of the trigger rocker 210 is hinged to the slot on the synchronous trigger push rod 215. The synchronous trigger push rod 215 passes through the mounting hole in front of the cover 204 on the gripper base and is inserted into the linear bearing 220. The left and right gripping arms are bolted to the opening and closing rack 216. The opening and closing rack 216 is mounted on the linear slide protruding from the upper cover 204 and lower cover 205 of the gripper base and meshes with the opening and closing gear 217. The opening and closing gear 217 is mounted on the upper cover 204 and lower cover 205. The mounting hole between the two sides is hinged to the gear rod 218, and the other side of the gear rod 218 is hinged to the T-shaped trigger push rod 219. The linear bearing 220 is installed inside the mounting plate behind the cover 204 on the gripper base. The T-shaped trigger push rod 219 passes through the opening and closing compression spring 221 and is inserted into the linear bearing 220. The stepped trigger slider 222 is installed at the protruding linear slide between the upper and lower covers of the gripper mounting base and is hinged to the trigger swing wheel 207 below. The single swing wheel trigger opening and closing gripper 2 has an overall structure that is symmetrically arranged from left to right.

[0047] like Figure 5 As shown, the anti-tipping sealed elastic chain link assembly 3 includes a sealed double V-support load chain link 31, an unloaded chain link 32, a needle roller bearing 3119, and a sealing ring 3120. The sealed double V-support load chain link 31 and the unloaded chain link 32 are hinged together by the needle roller bearing 3119. The unloaded chain link 32 has a groove, and the sealing ring 3120 is installed in the groove on the unloaded chain link 32. The sealing ring 3120 installed at the hinge position achieves sealing of the hinged shaft system.

[0048] like Figure 6As shown, the sealed double V-support load chain link 31 includes a lower load chain link plate 3101, a load mounting plate 3102, an upper load chain link plate 3103, a V-wheel bracket 3104, a V-wheel shaft 3105, a V-wheel buckle cover 3106, an outer compression spring for the roller 3107, a split V-wheel 3108, an inner compression spring for the roller 3109, a roller sealing ring 3110, a V-wheel positioning sleeve 3111, an elastic retaining ring for the hole 3112, a washer 3113, a chain link shaft 3114, a deep groove ball bearing 3115, a sealed intermediate cylinder 3116, an intermediate cylinder positioning sleeve 3117, a skeleton sealing ring 3118, a needle roller bearing 3119, and a sealing ring 3120. The upper load link plate 3103 and lower load link plate 3101 are bolted to the upper and lower sides of the load mounting plate 3102. The link shaft 3114 is hinged to the upper load link plate 3103 and lower load link plate 3101 via the needle roller bearing 3119. The V-shaped wheel bracket 3104 is bolted to the upper and lower ends of the link shaft 3114. The sealing ring 3120 and washer 3113 are installed between the V-shaped wheel bracket 3104 and the upper load link plate to ensure sealing while enhancing support. For wear resistance, the split V-shaped wheel 3108 is symmetrically mounted on the V-shaped wheel bracket 3104 via the V-shaped wheel shaft 3105, and the V-shaped wheel shaft 3105 is fixed by screws at both ends. V-shaped wheel positioning sleeves 3111 are respectively installed on the left and right sides inside the split V-shaped wheel 3108. The outer side of the V-shaped wheel positioning sleeve 3111 is fixed by an elastic retaining ring 3112 through a hole. The inner compression spring 3109 and the outer compression spring 3107 are installed inside the split V-shaped wheel 3108 and are supported by the V-shaped wheel. A wheel axle 3105 passes through the V-shaped wheel 3108. A V-shaped wheel cover 3106 is installed between the outer end face of the split V-shaped wheel 3108 and the V-shaped wheel bracket 3104. Grooves are provided on the outer circular surface and the inner plane of the split V-shaped wheel 3108 to install the roller sealing ring 3110 to ensure sealing. Gaps are left between the left and right split V-shaped wheels 3108 and between them and the V-shaped wheel cover 3106. The split V-shaped wheel 3108 can move slightly axially under the action of the inner compression spring 3109 and the outer compression spring 3107. This split structure ensures that the upper and lower split V-shaped wheels 3108 are in close contact with the track while avoiding excessive contact. The sealing intermediate cylinder 3116 is installed in the middle of the chain link shaft 3114. The deep groove ball bearings 3115 are respectively installed on the upper and lower sides of the sealing intermediate cylinder 3116. The intermediate cylinder positioning sleeve 3117 is installed on the outside of the deep groove ball bearings 3115. The skeleton sealing ring 3118 is installed between the intermediate cylinder positioning sleeve 3117 and the sealing intermediate cylinder 3116 to achieve sealing of the sealing intermediate cylinder 3116.

[0049] like Figure 7As shown, the double-layer closed guide rail support assembly 4 includes an upper linear section guide rail support base 401, an upper arc section guide rail support base 402, an alignment guide positioning key 403, a lower linear section guide rail support base 404, a linear section V-shaped guide rail 405, a lower arc section guide rail support base 406, and an arc section V-shaped guide rail 407. The upper linear section guide rail support base 401 and the lower linear section guide rail support base 404 are bolted to the upper and lower mounting guide bars of the sealed main frame 6, respectively. The linear section V-shaped guide rail 405 is bolted into the grooves of the upper linear section guide rail support base 401 and the lower linear section guide rail support base 404. The upper arc section guide rail support base 402 and the lower arc section guide rail support base 406 are bolted to the upper and lower mounting plates of the sealed shaft drive unit assembly 5 and to the driven side of the sealed slide rail. At the upper and lower mounting plates of the tensioning assembly 7, the arc-shaped V-shaped guide rail 407 is bolted into the groove of the arc-shaped guide rail support base. The alignment guide positioning key 403 is bolted to the transition connection between the straight section guide rail support base 401 and the arc-shaped guide rail support base 402. When the sealed slide rail support driven tensioning assembly 7 is tensioned outward, it can be guided by the alignment guide positioning key 403, so that the straight section guide rail support base 401 and the arc-shaped guide rail support base 402 are on the same horizontal plane.

[0050] like Figure 8 As shown, at the joint between the straight V-shaped guide rail 405 and the arc V-shaped guide rail 407, the boss of the straight V-shaped guide rail 405 and the groove of the arc V-shaped guide rail 407 cooperate to allow the anti-tipping sealing elastic chain link assembly 3 to pass smoothly through this transition section.

[0051] like Figure 9 and Figure 10As shown, the sealed shaft drive unit assembly 5 includes a drive assembly mounting bracket 501, an upper end cover 502, a deep groove ball bearing 3115, a nylon preload washer 503, a hub positioning sleeve 504, a drive wheel disc 505, a drive wheel axle 506, a tapered roller bearing 507, a lower end cover 508, a reducer 509, a motor 510, a skeleton sealing ring 3118, and a sealing ring 3120. The motor 510 is connected to the reducer 509 and is bolted to the stop of the lower end cover 508. The lower end cover 508 is bolted to the lower part of the drive assembly mounting bracket 501, and a sealing ring 3120 is installed at the connection. The tapered roller bearing 507 is mounted above the lower end cover 508. The drive wheel axle 506 is connected to the output shaft of the reducer 509 via a standard flat key, and the shaft of the drive wheel axle 506... The shoulder rests on the inner ring of the tapered roller bearing 507. The suspended portion between the drive wheel shaft 506 and the drive assembly mounting bracket 501 is sealed by a skeleton seal ring 3118. The drive wheel disc 505 is keyed and mounted on the middle mounting portion of the drive assembly mounting bracket 501, and is positioned by the shaft shoulder on the drive wheel shaft 506 and sealed by a seal ring 3120 at the shaft shoulder groove. The hub positioning sleeve 504 is mounted above the drive wheel disc 505 and is sealed by a seal ring 3120 and a skeleton seal ring 3118. The nylon preload washer 503 is mounted above the hub positioning sleeve 504. The deep groove ball bearing 3115 is mounted above the nylon preload washer 503. The upper end cover 502 is bolted to the drive assembly mounting bracket 501 and a seal ring 3120 is installed at the inner ring connection.

[0052] like Figure 11 As shown, the sealed slide rail supports the driven tensioning assembly 7, which includes a driven tensioning bracket 701, a tensioning slider sealing cylinder 702, a linear slide rail 703, a slider 704, a sealing ring 3120, and a tensioning cylinder 705. The tensioning slider sealing cylinder 702 is bolted to the underside of the driven tensioning bracket 701. Grooves are provided on both the upper and lower surfaces of the tensioning slider sealing cylinder 702, and the sealing ring 3120 is installed in the grooves to achieve a sealing function. The slider 704 inside the tensioning slider sealing cylinder 702 is mounted on the driven tensioning bracket 701. On the movable tension bracket 701, a linear slide rail 703 is mounted on the mounting plate of the sealed main frame 6. The tension cylinder 705 is installed inside the sealed main frame 6 on the same side as the sealed slide rail support driven tensioning assembly 7, and the mounting port on the sealed main frame 6 is sealed by a sealing end cap. The slider 704 below the sealed slide rail support driven tensioning assembly 7 guides the linear slide rail 703. The tension cylinder 705 pushes out the sealed slide rail support driven tensioning assembly 7 to achieve tensioning of the conveyor chain system.

[0053] The operation process in this embodiment is implemented as follows:

[0054] This invention provides a double-layer closed guide rail supported sealed material conveying system, such as... Figure 1 As shown, the main steps are as follows:

[0055] S1: The sealed double V-support load chain link 31 in the anti-tipping sealed elastic chain link assembly 3 undertakes the function of material transportation. The sealed double V-support load chain link 31 is sandwiched in the middle by the upper and lower guide rails in the double-layer closed guide rail support assembly 4, thereby providing firm support for the load and suppressing the tipping caused by the load cantilever. At the same time, the split V-shaped wheel 3108 and its internal roller external compression spring 3107 and roller internal compression spring 3109 can adapt to the situation of dust accumulation on the track and roller wear, ensuring that the upper and lower rollers are in close contact with the track, and avoiding the working condition of the upper and lower rollers being too tight due to dust accumulation on the track.

[0056] S2: The anti-tipping sealed elastic link assembly 3 drives the single pendulum trigger opening and closing gripper 2 to move around the stepped track support base 1. The single pendulum trigger opening and closing gripper 2 cooperates with the stepped track 101 to realize single wheel and single track triggering to clamp the single pendulum trigger opening and closing gripper 2 and open and close the gripper arm. When the anti-tipping sealed elastic link assembly 3 moves to different heights of the stepped track 101, it triggers the pendulum 207 to swing at different angles, which drives the stepped trigger slider 222 to move. The protrusions at different positions of the stepped trigger slider 222 push up the synchronous trigger push rod 215 or T-shaped trigger push rod 219 to drive the left and right side grippers to clamp or the gripper arm to open and close. This structure not only makes the structure compact and reduces costs, but also ensures the synchronicity of the movement of the left and right symmetrical mechanism.

[0057] S3: At the point where the anti-tipping sealing elastic link assembly 3 connects with the upper straight section guide rail support base 401 and the upper arc section guide rail support base 402, the alignment guide positioning key 403 ensures that the upper arc section guide rail support base 402 is on the same plane as the sealing slide rail support driven tensioning assembly 7 when it moves outward. Furthermore, the boss of the straight section V-shaped guide rail 405 and the groove of the arc section V-shaped guide rail 407 cooperate to allow the anti-tipping sealing elastic link assembly 3 to smoothly pass through this transition section, thereby achieving full-circumference support of the guide rail support assembly following the motion trajectory.

[0058] S4: The sealed slide rail supports the driven tensioning component 7 and the tensioning cylinder 705 work together to achieve tensioning of the conveyor chain system. This structure can make the chain adaptively adjust the tension force according to the wear state or load fluctuation through pneumatic tensioning, thereby reducing the vibration and noise of the transmission system.

[0059] S5: The drive wheel 505 in the sealed shaft drive unit assembly 5 engages with the sealed intermediate cylinder 3116 in the anti-tipping sealed elastic chain link assembly 3 to achieve power transmission, so that the anti-tipping sealed elastic chain link assembly 3 can stably transport materials in the double-layer closed guide rail support assembly 4.

[0060] S6: Through full system sealing, it prevents material debris and dust from accumulating or intruding into the transmission pair gaps, avoids chain link jamming, and extends the service life of the entire system. It can be cleaned and disinfected by water flushing, reducing the risk of contamination in hygiene-sensitive industries such as food and medicine.

[0061] The invention discloses a double-layer closed guide rail supported and sealed material conveying system that can be applied to material conveying scenarios in packaging machines with high cleanliness and high stability requirements. The system can achieve stable support for chain links and prevent dust accumulation and intrusion through a full-system sealing system, effectively ensuring hygiene and cleanliness. In addition, it can adapt to chain impact vibration and maintain the tension of the chain drive system, thereby meeting the requirements of food and pharmaceutical packaging production lines for hygiene level and operational stability.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A twin seal closed rail supported bulk material conveying system characterized by, It includes: Stepped track support base, single pendulum wheel trigger opening and closing clamp hand, anti-rollover sealed elastic chain link assembly, double-layer closed guide rail support assembly and sealed shafting drive unit assembly; The stepped track support base is provided with a stepped track for supporting and triggering the single pendulum wheel trigger opening and closing clamp hand; The single pendulum wheel trigger opening and closing clamp hand is installed outside the anti-rollover sealed elastic chain link assembly; The overall structure of the single pendulum wheel trigger opening and closing clamp hand is arranged symmetrically left and right, including a shell, a transmission assembly and a pair of clamp fingers; The transmission assembly is arranged inside the shell; The pair of clamp fingers are opened and closed by the transmission assembly; The sealed shafting drive unit assembly is installed in the internal hollow area surrounded by the double-layer closed guide rail support assembly; The sealed shafting drive unit assembly is engaged with the anti-rollover sealed elastic chain link assembly to realize power transmission; The sealed shafting drive unit assembly comprises a drive assembly mounting frame, an upper end cover, a deep groove ball bearing, a nylon pre-tightening pad, a hub positioning sleeve, a drive wheel disc, a drive wheel shaft, a tapered roller bearing, a lower end cover, a speed reducer, a motor, a sealing ring and a skeleton sealing ring; The motor is connected with the speed reducer and is installed at the stop opening of the lower end cover; The lower end cover is installed below the drive assembly mounting frame and is connected with the sealing ring; The tapered roller bearing is installed above the lower end cover; The drive wheel shaft is connected with the output shaft of the speed reducer through a common flat key; The shaft shoulder of the drive wheel shaft is located in the inner ring of the tapered roller bearing; The drive wheel shaft is suspended in the middle of the drive assembly mounting frame and is sealed by the skeleton sealing ring; The drive wheel disc is installed in the middle installation part of the drive assembly mounting frame by key connection and is sealed by the sealing ring in the shaft shoulder groove through the shaft shoulder positioning on the drive wheel shaft; The hub positioning sleeve is installed above the drive wheel disc and is sealed by the sealing ring and the skeleton sealing ring; The nylon pre-tightening pad is installed above the hub positioning sleeve; The deep groove ball bearing is installed above the nylon pre-tightening pad; The upper end cover is installed above the drive assembly mounting frame and is connected with the sealing ring at the inner ring; The anti-rollover sealed elastic chain link assembly is installed between the double-layer closed guide rail support assemblies; The anti-rollover sealed elastic chain link assembly comprises sealed double-V support load chain links and unloaded chain links; The sealed double-V support load chain links are movably connected with the unloaded chain links; The sealed double-V support load chain links comprise a main frame, a double-V type roller floating assembly and a center shaft sealing assembly; The main frame is used for bearing external working load and providing an installation base; The double-V type roller floating assembly is connected to the two sides of the main frame in a hinged manner and has an axial elastic floating capability through internal inner and outer compression spring groups, so that the V type wheel is self-adapted to the surface of the support track; The center shaft sealing assembly seals the center shaft; The V type guide rails of the double-layer closed guide rail support assembly support the split V type wheels on the anti-rollover sealed elastic chain link assembly.

2. A dual seal closed track supported material conveying system as claimed in claim 1, wherein, It also includes: Sealed main frame and sealed sliding rail support driven tensioning assembly The sealing main frame body and the sealing slide rail support driven tension assembly are installed in the internal hollow area surrounded by the double-layer closed guide rail support assembly; The sealing shafting drive unit assembly is installed on one side of the sealing main frame body, and the sealing slide rail support driven tension assembly is installed on the other side of the sealing main frame body; the sealing slide rail support driven tension assembly controls the tension of the conveying chain system.

3. A dual seal enclosed rail supported material conveying system as claimed in claim 1, wherein, The sealing double-V support load chain link, wherein the main body frame comprises a lower load chain link plate, a load mounting plate and an upper load chain link plate; the double-V type roller floating assembly comprises a V type wheel support, a V type wheel shaft, a V type wheel buckle cover, an outer roller compression spring, a split V type wheel, an inner roller compression spring, a roller sealing ring, a V type wheel positioning sleeve, a hole elastic retainer, a washer, a chain link shaft and a deep groove ball bearing; the center shaft sealing assembly comprises a sealing intermediate cylinder, an intermediate cylinder positioning sleeve, a skeleton sealing ring, a needle roller bearing and a sealing ring; the upper load chain link plate and the lower load chain link plate are installed on the upper and lower sides of the load mounting plate, the chain link shaft is hingedly installed with the upper load chain link plate and the lower load chain link plate through the needle roller bearing, the V type wheel support is installed on the upper and lower ends of the chain link shaft, the sealing ring and the washer are installed between the V type wheel support and the upper load chain link plate, the split V type wheel is symmetrically installed on the V type wheel support through the V type wheel shaft and is fixed, the V type wheel positioning sleeve is installed on the left and right sides of the split V type wheel, the V type wheel positioning sleeve is fixed through the hole elastic retainer outside, the inner roller compression spring and the outer roller compression spring are installed in the split V type wheel and are penetrated by the V type wheel shaft, the V type wheel buckle cover is installed between the outer end surface of the split V type wheel and the V type wheel support, the split V type wheel outer circular surface and the inner side thereof are provided with grooves for installing the roller sealing ring, gaps are left between the split V type wheels and between the split V type wheels and the V type wheel buckle cover, and the split V type wheel moves in the axial direction under the action of the inner roller compression spring and the outer roller compression spring; the sealing intermediate cylinder is installed in the middle of the chain link shaft, the deep groove ball bearings are installed on the upper and lower sides of the sealing intermediate cylinder, the intermediate cylinder positioning sleeve is installed outside the deep groove ball bearings, the skeleton sealing ring is installed between the intermediate cylinder positioning sleeve and the sealing intermediate cylinder, and the sealing intermediate cylinder is sealed.

4. A dual seal enclosed rail supported material conveying system as claimed in claim 2, wherein, The double-layer closed guide rail support assembly comprises an upper layer guide rail and a lower layer guide rail; the upper layer guide rail is provided with an alignment guide positioning key at a guide rail connection position; the sealing slide rail support driven tension assembly is guided by the alignment guide positioning key when being moved outward for tensioning; the lower layer guide rail connection position is connected through the cooperation of a boss and a groove to enable the anti-tilting sealing elastic chain link assembly to realize the transition of the connection position.

5. A dual seal enclosed rail supported material conveying system as claimed in claim 4, wherein, The upper layer guide rail comprises an upper layer straight line segment guide rail support base and an upper layer circular arc segment guide rail support base; the lower layer guide rail comprises a lower layer straight line segment guide rail support base, a straight line segment V type guide rail, a lower layer circular arc segment guide rail support base and a circular arc segment V type guide rail. The upper linear segment guide rail support base and the lower linear segment guide rail support base are respectively installed at the upper and lower installation guide bars of the sealed main frame body, the linear segment V-shaped guide rail is installed in the groove of the upper linear segment guide rail support base and the lower linear segment guide rail support base, the upper circular arc segment guide rail support base and the lower circular arc segment guide rail support base are respectively installed at the upper and lower installation plates of the sealed shaft system driving unit assembly and the upper and lower installation plates of the sealed slide rail support driven tension assembly, and the circular arc segment V-shaped guide rail is installed in the groove of the upper circular arc segment guide rail support base and the lower circular arc segment guide rail support base.

6. A dual seal enclosed rail supported material conveying system as claimed in claim 2, wherein, The sealed slide rail support driven tension assembly comprises a driven tension support, a tension sliding block sealing cylinder, a linear slide rail, a sliding block, a sealing ring and a tension cylinder. The tension sliding block sealing cylinder is installed below the driven tension support. The upper and lower surfaces of the tension sliding block sealing cylinder are both provided with grooves, and the sealing ring is installed in the groove. The sliding block in the tension sliding block sealing cylinder is installed on the driven tension support. The linear slide rail in the tension sliding block sealing cylinder is installed on the sealed main frame body installation plate. The tension cylinder is installed in the sealed main frame body on the same side of the sealed slide rail support driven tension assembly, and the installation port on the sealed main frame body is sealed by a sealed end cover. The sliding block below the sealed slide rail support driven tension assembly guides the linear slide rail, and the tension cylinder pushes out the sealed slide rail support driven tension assembly to realize the tensioning of the conveying chain system.

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