Lateral bending food conveying chain with double guide nails

Abstract

The invention solves the problem that after a conveying chain is combined with a guide rail, a chain plate is prone to abrasion, and relates to the technical field of conveying chains, in particular to a lateral bending food conveying chain with double guide nails, which comprises an outer chain link, an inner chain link is rotatably mounted on the outer chain link, and the outer chain link comprises an outer chain plate I and an outer chain plate II positioned above the outer chain plate I; a pin shaft structure is connected between the first outer chain plate and the second outer chain plate in an inserted mode, two hole grooves are formed in the top face of the second outer chain plate, a guide nail is installed on the second outer chain plate through the hole grooves, the inner chain link comprises two inner chain plates which are arranged up and down, two butt joint sleeves which are arranged side by side are fixedly connected between the two inner chain plates in an inserted mode, and the butt joint sleeves are connected with the pin shaft structure. And the bottom of the pin shaft structure penetrates through the interior of the butt-joint sleeve, and the outer surface of the butt-joint sleeve is detachably sleeved with a roller. The additionally-arranged guide nails can effectively guide the conveying chain to move along a preset path, the impact of lateral force on the chain plates is relieved, the situation that the chain plates deform or are damaged due to too large pressure is avoided, and meanwhile direct friction between the chain plates is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor chains, and specifically to a food conveyor chain with double guiding pins and side bending. Background Art

[0002] In the food processing industry, during the processes of food cleaning, sorting, packaging, and conveying, etc., a side-bending food conveyor chain is required. Especially for foods with different shapes, weights, and sizes, its turning ability makes the conveyor chain very suitable for use on complex production lines.

[0003] The structure of a conventional side-bending food conveyor chain consists of inner link sections, outer link sections, and sleeves and pin shafts that enable the two to be rotatably connected. When the conveyor chain formed by these structures is combined with the guide rail on the conveying equipment, its chain plates are in direct contact with the guide rail. During the subsequent operation of the conveyor chain, the chain plates will be directly subject to friction, resulting in increased wear. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a side-bending food conveyor chain with double guiding pins to solve the problem that the chain plates of the conveyor chain are prone to wear after being combined with the guide rail as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A side-bending food conveyor chain with double guiding pins, including outer link sections, and inner link sections are rotatably installed on the outer link sections; The outer link section includes an outer link plate one and an outer link plate two located above the outer link plate one. A pin shaft structure is inserted between the outer link plate one and the outer link plate two. Two hole slots are opened on the top surface of the outer link plate two, and guiding pins are installed on the outer link plate two through the hole slots; The inner link section includes two inner link plates arranged up and down. Two docking sleeves arranged side by side are fixedly inserted between the two inner link plates, and the docking sleeves are sleeved on the outer surface of the pin shaft structure. A roller is detachably sleeved on the outer surface of the docking sleeve.

[0006] Preferably, the roller includes two semi-cylinders. Slot openings are opened at one end of each of the two semi-cylinders, and the two slot openings are arranged in a staggered manner. At the other end of each of the two semi-cylinders, a convex elastic piece is connected. A plugging slot is opened on the outer side of the semi-cylinder, the plugging slot communicates with the slot opening, and the width is smaller than the depth of the slot opening.

[0007] Preferably, the height of the docking sleeve is greater than the distance between the top surface of the upper inner link plate and the bottom surface of the lower inner link plate, and the midpoint of the docking sleeve along its axis is located on the plane where the midpoint of the distance between the upper and lower inner link plates is located.

[0008] Preferably, chamfered inclined surfaces are provided at the top and bottom of the inner wall of the docking sleeve, and chamfered arcs are provided at the top and bottom of the outer wall of the docking sleeve.

[0009] Preferably, the pin shaft structure is composed of a cold-formed rivet, a large step and a small step.

[0010] Preferably, the height of the large step is consistent with the distance between the bottom surface of the first outer link plate and the top surface of the second outer link plate, and its diameter is larger than that of the small step. The bottom surface of the cold-formed rivet is in contact with the top surface of the second outer link plate, and the bottom of the small step is provided with an inclined chamfer.

[0011] Preferably, two positioning rings are installed on the top surface of the first outer link plate and the bottom surface of the second outer link plate respectively, and the center of the positioning ring is coaxial with the large step inserted on the first outer link plate; The positioning ring is composed of an annular plate and a circular strip, and the inner diameter of the circular strip is consistent with the outer diameter of the docking sleeve.

[0012] Preferably, the cross-section of the guide pin is in the shape of an "I", and it is made of polyoxymethylene.

[0013] By means of the above technical solutions, the present invention provides a food conveying chain with double guide pins for side bending, which has at least the following beneficial effects: 1. By adding two guide pins to several outer link joints in the conveying chain, the present invention can effectively guide the conveying chain to move along a predetermined path, reduce the impact of lateral force on the link plate, avoid deformation or damage of the link plate due to excessive pressure, and at the same time avoid direct friction between the link plates, playing a role in protecting the link plates.

[0014] 2. After being combined with the sprocket teeth, by means of the rollers sleeved on the surface of the docking sleeve, the present invention directly contacts the sprocket teeth, adjusts the sliding friction when the docking sleeve contacts the sprocket teeth to rolling friction, can reduce the running resistance of the conveying chain, improve the efficiency of energy transfer, and at the same time cause less wear to the sprocket teeth, the docking sleeve and the pin shaft structure.

[0015] 3. The rollers sleeved on the surface of the docking sleeve in the present invention are set as a detachable combination, which is convenient for replacing the overly worn rollers.

[0016] 4. The docking sleeve in the present invention forms a protruding state on the opposite sides of the two inner link plates, which can effectively reduce the contact area between the inner and outer link plates, thereby reducing wear and extending the service life of the entire conveying chain. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2Schematic diagram of the planar structure of the present invention; Figure 3 Schematic diagram of the disassembled structure of the present invention; Figure 4 Schematic diagram of the disassembled structure of the outer link section of the present invention; Figure 5 Schematic diagram of the disassembled structure of the inner link section and the roller of the present invention; Figure 6 Schematic diagram of the disassembled structure of the roller of the present invention.

[0018] In the figure: 1. Outer link section; 101. First outer link plate; 102. Second outer link plate; 1021. Hole groove; 103. Pin shaft structure; 1031. Cold round riveting; 1032. Large step; 1033. Small step; 104. Guide pin; 105. Positioning ring; 2. Inner link section; 201. Inner link plate; 202. Docking sleeve; 3. Roller; 301. Semi-cylinder; 302. Notch; 303. Protruding elastic piece; 304. Insertion slot. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] Embodiment 1 Please refer to Figures 1 - 6, this embodiment proposes a food conveying chain with double guide pins for side bending, which can effectively protect the chain plates in the conveying chain. The side-bending food conveying chain is composed of a number of outer link sections 1 and inner link sections 2 that are rotatably connected to each other. The outer link section 1 includes an outer link plate one 101 and an outer link plate two 102 located above the outer link plate one 101. A pin shaft structure 103 is inserted between the outer link plate one 101 and the outer link plate two 102. The inner link section 2 includes two inner link plates 201 arranged vertically. Two docking sleeves 202 arranged side by side are fixedly inserted between the two inner link plates 201. By combining the two inner link plates 201 arranged vertically through the docking sleeves 202, the three form an integral whole. And the docking sleeve 202 is sleeved on the outer surface of the pin shaft structure 103. When the outer link section 1 and the inner link section 2 are actually assembled, the outer link plate one 101 is aligned with the lower inner link plate 201 along the bottom of the docking sleeve 202, and the outer link plate two 102 is aligned with the upper inner link plate 201 along the top of the docking sleeve 202. Then, the pin shaft structure 103 is sequentially passed through the outer link plate one 101, the docking sleeve 202, and the outer link plate two 102 from top to bottom, so that the outer link section 1 and the inner link section 2 are rotationally combined.

[0021] And two hole grooves 1021 are provided on the top surface of the outer link plate two 102. Guide pins 104 are installed on the outer link plate two 102 through the hole grooves 1021. The cross section of the guide pin 104 is in an I-shaped form, and it is made of polyoxymethylene. When the side-bending food conveying chain is applied to a food conveying device, the guide pin 104 is fitted into the guide rail, which can fix the conveying chain on the guide rail, keep it in the correct movement track, and at the same time prevent direct friction between the chain plate and the guide rail, playing a role in protecting the chain plate. In addition, in a side-bending conveying system, the conveying chain needs to turn or bear lateral pressure. The guide pin 104 can effectively guide the conveying chain to move along a predetermined path, reduce the impact of the lateral force on the chain plate, and avoid deformation or damage of the chain plate due to excessive pressure.

[0022] Embodiment Two For the assembled overall conveying chain, it will mesh with the sprocket. Therefore, when the driving device on the running conveying line controls the rotation of the sprocket, the tooth heads in the sprocket will mesh with and disengage from the conveying chain. During this process, the same area on the surface of the docking sleeve 202 will be subject to sliding friction from the tooth heads, resulting in large energy loss and fast wear. Based on this problem, as Figures 1 - 3 , Figure 5 shown, in this embodiment, a roller 3 is detachably sleeved on the outer surface of the docking sleeve 202. So that the sprocket teeth directly contact the outer surface of the roller 3. Since the roller 3 can rotate freely on the outer surface of the docking sleeve 202, when the conveying chain meshes with and disengages from the sprocket, the roller 3 will roll on the sprocket tooth profile, reducing the running resistance of the conveying chain and improving the efficiency of energy transfer.

[0023] After additionally adding the roller 3, the wear generated by the engagement and disengagement between the conveying wheel and the sprocket teeth mainly occurs between the outer surface of the roller 3 and the sprocket teeth, thereby protecting the docking sleeve 202 inside the roller 3 and the pin shaft structure 103 deeper inside. At the same time, the wear of the sprocket teeth caused by rolling contact is also smaller than that caused by sliding contact.

[0024] Among them, the docking sleeve 202 and the roller 3 adopt the roller cold heading technology to meet the inner and outer diameter dimensions and ensure the concentricity requirements, so that the twist and side bend of the chain will be uniform in both directions after the chain is formed.

[0025] Embodiment Three Continuing from the above Embodiment Two, in order to conveniently replace the overly worn roller 3, as Figure 1 、 Figures 5 - 6 shown, the roller 3 includes two semi-cylinders 301. Grooves 302 are provided at one end of each of the two semi-cylinders 301, and the two grooves 302 are arranged in a staggered manner. At the other end of each of the two semi-cylinders 301, a convex elastic piece 303 is connected. A plug-in groove 304 is provided on the outer side of the semi-cylinder 301, and the plug-in groove 304 communicates with the groove 302 and has a width smaller than the depth of the groove 302. From the above structure, it can be seen that the main structure of the entire roller 3 is divided into two parts, and the disassembly and assembly of the two semi-cylinders 301 are realized through the provided grooves 302, plug-in grooves 304, and the additionally provided convex elastic pieces 303. During actual disassembly, by applying a squeezing force towards the relative direction to the two convex elastic pieces 303 along the outer sides of the two plug-in grooves 304, the convex parts of the convex elastic pieces 303 are forced to contract into the grooves 302, and then by applying a pulling force towards the opposite direction to the two semi-cylinders 301, the disassembly can be completed. Its overall disassembly and assembly process is convenient and easy to replace.

[0026] Embodiment Four The height of the docking sleeve 202 is greater than the distance between the top surface of the upper inner link plate 201 and the bottom surface of the lower inner link plate 201, and the midpoint of the docking sleeve 202 along its axis is located on the plane where the midpoint of the distance between the two inner link plates 201 is located, so that the docking sleeve 202 forms a protruding state on the opposite sides of the two inner link plates 201, which can effectively reduce the contact area between the inner and outer link plates, thereby reducing wear and extending the service life of the entire conveying chain.

[0027] Bevel chamfers are provided at the top and bottom of the inner wall of the docking sleeve 202, and arc chamfers are provided at the top and bottom of the outer wall of the docking sleeve 202. This can increase the side bend and rotational clearance of the pin shaft structure 103 and the docking sleeve 202, and improve the overall climbing performance of the conveying chain.

[0028] Embodiment Five The pin shaft structure 103 is composed of a cold round rivet 1031, a large step 1032 and a small step 1033. The height of the large step 1032 is consistent with the distance between the bottom surface of the outer link plate 101 and the top surface of the outer link plate 102, and its diameter is larger than that of the small step 1033. The bottom surface of the cold round rivet 1031 is in contact with the top surface of the outer link plate 102, and the bottom of the small step 1033 is provided with an inclined chamfer. After the conveying chain is formed, the cold round rivet 1031 is used on the large step 1032 to ensure the firmness of the conveying chain. The large step 1032 is used to install the outer link plate 101 and the outer link plate 102, and the small step 1033 is used to install the hopper for conveying food, and its bottom is provided with an inclined chamfer to play a guiding role and facilitate the installation of the hopper.

[0029] Embodiment Six When the outer link 1 and the inner link 2 are assembled, it is necessary to frequently check the positions of the round holes on the outer link plate 101, the outer link plate 102 and the docking sleeve 202, and after the checking is completed, the inner link 2 does not show any deviation before the subsequent pin shaft structure 103 can be inserted. In order to effectively improve the speed of docking the outer link plate 101, the outer link plate 102 and the docking sleeve 202, as shown in Figure 4, two positioning rings 105 are installed on the top surface of the outer link plate 101 and the bottom surface of the outer link plate 102. The center of the positioning ring 105 is coaxial with the large step 1032 inserted on the outer link plate 101. The positioning ring 105 is composed of an annular plate and a circular strip, and the inner diameter of the circular strip is the same as the outer diameter of the docking sleeve 202. By sleeving the positioning ring 105 on the exposed part of the docking sleeve 202, the coaxiality of their circular grooves can be ensured. In addition, when the conveying chain bends and the angle between the outer link 1 and the inner link 2 changes, the docking sleeve 202 is in direct contact with the positioning ring 105, rather than the outer link plate 101 and the outer link plate 102, thereby effectively reducing the wear of the outer link plate.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. The side-curved food conveying chain with double guide pins is characterized in that It includes an outer link section (1), and an inner link section (2) is rotatably installed on the outer link section (1); The outer link section (1) includes an outer link plate one (101) and an outer link plate two (102) located above the outer link plate one (101). A pin shaft structure (103) is inserted between the outer link plate one (101) and the outer link plate two (102). Two hole slots (1021) are opened on the top surface of the outer link plate two (102), and a guide pin (104) is installed on the outer link plate two (102) through the hole slots (1021); The inner link section (2) includes two inner link plates (201) arranged up and down. Two docking sleeves (202) arranged side by side are fixedly inserted between the two inner link plates (201), and the docking sleeves (202) are sleeved on the outer surface of the pin shaft structure (103). A roller (3) is detachably sleeved on the outer surface of the docking sleeve (202).

2. The double-guided nail side-curved food conveying chain according to claim 1, characterized in that: The roller (3) includes two semi - bodies (301). Slot openings (302) are opened at one - side ends of the two semi - bodies (301), and the two slot openings (302) are arranged in a staggered manner. Raised elastic pieces (303) are connected to the other - side ends of the two semi - bodies (301). A plug - in slot (304) is opened on the outer side of the semi - body (301), and the plug - in slot (304) communicates with the slot opening (302) and has a width smaller than the depth of the slot opening (302).

3. The double-guided nail side-curved food conveyor chain according to claim 1, characterized in that: The height of the docking sleeve (202) is greater than the distance between the top surface of the upper inner link plate (201) and the bottom surface of the lower inner link plate (201), and the mid - point of the docking sleeve (202) along its axis is located on the plane where the mid - point of the distance between the upper and lower inner link plates (201) is located.

4. The double-guide-pin curved food conveying chain according to claim 1, characterized in that: Bevel chamfers are provided at the top and bottom of the inner wall of the docking sleeve (202), and arc chamfers are provided at the top and bottom of the outer wall of the docking sleeve (202).

5. The double-guided nail side-curved food conveying chain according to claim 1, characterized in that: The pin shaft structure (103) is composed of a cold - formed round rivet (1031), a large step (1032), and a small step (1033).

6. The double-guided nail side-curved food conveying chain according to claim 5, wherein: The height of the large step (1032) is consistent with the distance between the bottom surface of the outer link plate one (101) and the top surface of the outer link plate two (102), and its diameter is greater than the diameter of the small step (1033). The bottom surface of the cold - formed round rivet (1031) fits with the top surface of the outer link plate two (102), and a bevel chamfer is provided at the bottom of the small step (1033).

7. The double-guided nail bending food conveying chain according to claim 1, characterized in that: Two positioning rings (105) are installed on the top surface of the outer link plate one (101) and the bottom surface of the outer link plate two (102). The center of the positioning ring (105) is coaxial with the large step (1032) inserted on the outer link plate one (101); The positioning ring (105) is composed of an annular plate and a circular bar, and the inner diameter of the circular bar is consistent with the outer diameter of the docking sleeve (202).

8. The double-guided nail side-curved food conveying chain according to claim 1, characterized in that: The cross - section of the guide pin (104) is in an I - shaped form, and it is made of polyoxymethylene.

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