A multi-sided occlusal plastic pusher chain device

Abstract

The present application relates to the technical fields of mechanical transmission, and discloses a multi-surface occlusion type plastic pushing chain device, which comprises a shell, a pushing chain assembly, two pushing chains and a power input assembly.The pushing chain assembly is installed in the shell and comprises the two pushing chains, and the two pushing chains are jointly connected with a carrying joint; a guide groove is formed on the inner wall of the shell for the pushing chains to walk along a predetermined track; and the power input assembly is installed on the surface of the shell and used for driving the pushing chains to walk; wherein the two pushing chains occlude each other when the pushing chain assembly moves forward with the carrying joint.The multi-surface occlusion type plastic pushing chain device disclosed by the present application has reduced complexity of the chain structure compared with the traditional chain structure, and realizes the effect of multi-surface occlusion under the cooperation of the occlusion chain block and the connecting chain block; the interlocking between the connecting chain block and the occlusion chain block makes it easier to ensure the dimensional accuracy and prevents the device from being bent in each direction, so that the device can move at high speed and stably.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission technology, and more specifically, to a multi-faceted interlocking plastic push chain device. Background Technology

[0002] With the development of engineering plastics and fiber-reinforced materials, a trend of "plastics driving steel" has emerged. Engineering plastics have advantages such as easy processing, light weight, and low cost, while also maintaining a certain level of strength and durability, leading to a gradual expansion of their application scenarios and scope, including in the field of chain drives. In some specific applications, transmission mechanisms are required to have non-magnetic properties or biocompatibility, such as in medical MRI, aerospace, and military equipment. Furthermore, an increasing number of factories are adopting high-cleanliness cleanrooms, such as in the food, pharmaceutical, lithium battery, semiconductor, and 3C product industries, where mechanical transmission components made of engineering plastics are more suitable for these needs.

[0003] Currently, there are many mature linear transmission mechanisms or devices on the market, such as traditional metal chains, traditional belts, racks, ball screws, cylinders, and hydraulic cylinders. Chains, racks, and screws need to cooperate with sprockets, gears, and ball components to complete reciprocating linear motion, but they can only move within a certain range and cannot exceed the device space, occupying a large space. In addition, the material is metal, requiring oiling maintenance. Although cylinders and hydraulic cylinders can achieve telescopic motion, there is a risk of air or oil leakage, and the control precision is also poor, making it impossible to achieve long-distance transmission. Belts also have disadvantages such as low speed, poor stability, and large installation space. Considering the application scenarios, people have an increasingly urgent need for products with good rigidity, high cleanliness, maintenance-free operation, high speed, small footprint, telescopic function, low noise, good stability, non-magnetic properties, and long-distance transmission capabilities. Summary of the Invention

[0004] To achieve the above objectives, the present invention discloses a multi-faceted interlocking plastic push chain device, comprising: case; The push chain assembly is installed inside the housing. The push chain assembly includes two push chains, which are connected to a carrier joint. The inner wall of the housing is formed with guide grooves for the push chains to travel along a predetermined trajectory. The power input assembly is mounted on the surface of the housing and is used to drive the push chain. When the two push chains mesh, the carrier joint moves forward.

[0005] Preferably, each push chain consists of interlocking chain blocks and connecting chain blocks, with the connecting chain blocks connecting two adjacent interlocking chain blocks, thereby creating an alternating splicing arrangement of the interlocking chain blocks and connecting chain blocks.

[0006] Preferably, the interlocking chain block includes a top surface and a bottom surface facing each other. The top surface is formed with a mutual interlocking relief groove, and the bottom surface is formed with a splicing groove for splicing with the connecting chain block. The connecting chain block is integrally formed with a splicing part for inserting into the splicing groove. The splicing part is provided with a pin hole, and the pin passes through the pin hole. The inner wall of the splicing groove is reserved with a connecting hole for the end of the pin to pass through. The power input component is driven and connected to the end of the pin. Each interlocking chain block of the push chain is formed with interlocking arc surfaces that cooperate with each other.

[0007] Preferably, the clearance groove, splicing groove, and interlocking arc surface are all provided in pairs, and the stop plane is formed between a pair of interlocking arc surfaces.

[0008] Preferably, one of the push chains has a connecting chain block with a meshing arc surface for meshing with a meshing chain block of another push chain, and the connecting chain block also has an integrally formed blocking part for blocking adjacent meshing chain blocks.

[0009] Preferably, the power input component includes: The drive shaft and driven shaft are mounted on the housing. The drive shaft and driven shaft are equipped with end-drive sprockets that cooperate with the pin shaft. The drive shaft is the power input shaft. The gearbox is mounted on the surface of the housing. The drive shaft and driven shaft extend into the gearbox, and a pair of meshing transmission gears are located inside the gearbox and are respectively mounted on the drive shaft and driven shaft.

[0010] Preferably, the top of the housing has a top opening for two push chains to extend out. The housing is detachably assembled from a front housing and a rear housing. The front housing and the rear housing are symmetrically arranged, and the inner walls of both are formed with guide grooves for the push chains to travel along a predetermined trajectory.

[0011] Preferably, the entire material is made of engineering plastics.

[0012] Preferably, the sprocket has involute teeth, and the transmission gear is any one of spur gear, helical gear, or herringbone gear.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The multi-faceted interlocking plastic push chain device disclosed in this invention reduces the complexity of the chain structure compared with the traditional chain structure. Stable transmission can be achieved using only three parts: interlocking chain block, connecting chain block and pin shaft, which reduces production costs and changes the characteristics of traditional roller chain or sleeve chain. Through the special structural design of the interlocking chain block and connecting chain block, the two originally flexible push chains become a "rigid" column after interlocking, so that the chain can not only withstand tension but also withstand tensile force, which changes the force characteristics of the traditional chain. With the cooperation of the interlocking chain block and the connecting chain block, the multi-faceted interlocking effect is achieved. The interlocking between the connecting chain block and the interlocking chain block makes it easier to ensure dimensional accuracy, and it is not easy to bend in any direction, so as to achieve high-speed and stable movement.

[0014] (2) The present invention discloses a multi-faceted interlocking plastic push chain device. The chain blocks can be injection molded using engineering plastics and fiber materials. Compared with metal push chains, the metal push chain plates have a plate-shaped planar structure and a small contact area on the force-bearing surface. The interlocking area on the side of the interlocking chain blocks in the present invention is greatly increased, resulting in better load-bearing effect and stability. At the same time, the engineering plastic material makes the push chain maintenance-free, clean, low-noise and non-magnetic.

[0015] (3) The multi-faceted interlocking plastic push chain device disclosed in this invention adopts a symmetrical split front and rear shell configuration, integrating the chain guide mechanism, chain drive area, and chain storage area into one unit. This not only ensures accurate positioning and simple assembly and disassembly, but also allows for the telescopic movement of the push chain assembly even without a guide. Of course, guide rails can also be added to improve the pushing distance and accuracy. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an external view of the present invention; Figure 2 This is a perspective view of the push chain component of the present invention; Figure 3 This is a schematic diagram of the push chain component structure of the present invention; Figure 4 This is a schematic diagram of the power input component transmission of the present invention; Figure 5 This is a perspective view of the two push chains of the present invention; Figure 6 This is a schematic diagram of the two push chain structures of the present invention; Figure 7 This is a schematic diagram of the interlocking chain block of the present invention; Figure 8 This is a schematic diagram of the connecting chain block of the present invention; Figure 9 This is a schematic diagram of the transport joint of the present invention; Figure 10 This is a split view of the front and rear housings of the present invention.

[0018] In the diagram: 10. Housing; 11. Push chain assembly; 12. Transport joint; 13. Drive shaft; 14. Engaging chain block; 15. Connecting chain block; 16. Top surface; 17. Bottom surface; 18. Clearance groove; 19. Pin hole; 20. Arc surface; 21. Stop plane; 22. Engaging arc surface; 23. Driven shaft; 24. Sprocket; 25. Gearbox; 26. Transmission gear; 27. Pin. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0020] Example The present invention will now be further described with reference to the accompanying drawings.

[0021] like Figures 1 to 10 As shown, this embodiment provides a multi-faceted interlocking plastic push chain device, comprising: Casing 10; Push chain assembly 11 is installed inside housing 10. Push chain assembly 11 includes two push chains. The two push chains are connected to a carrier joint 12. A guide groove is formed on the inner wall of housing 10 for the push chains to travel along a predetermined trajectory. A power input assembly is mounted on the surface of the housing 10 and is used to drive the push chain. When the two push chains engage, the pusher carrier joint 12 moves forward.

[0022] The working principle and beneficial effects of the above technical solution are as follows: This invention provides a multi-faceted interlocking plastic push chain device, whose transmission part consists of a push chain assembly 11 and a power input assembly, enabling reciprocating linear telescopic conveying of items. When two push chains interlock, they form a rigid column capable of withstanding tension and pressure. The ends of the two interlocking push chains are fixedly connected using a transport joint 12, which connects the pushed items. Designed based on the characteristics of engineering plastics, the push chain assembly 11 has a simple structure, significantly reducing the number of parts. Furthermore, by increasing the contact area when the two push chains interlock, the overall load-bearing capacity of the device is improved. The two push chains that are not interlocked remain flexible and can be spirally stored within the housing 10, further reducing the overall size of the device. Therefore, the push chain assembly 11 can extend to a distance much greater than the length of the device itself, making it particularly suitable for applications with limited space.

[0023] The push chain assembly 11 is driven by a power input component, enabling the push chain to have good precision and control over multi-point conveying distance. The push chain assembly 11 of the present invention can achieve long-distance telescopic conveying through trajectory design, achieving a function that ordinary transmission mechanisms cannot match. Additional guide rails can be used when necessary.

[0024] In addition, the push chain assembly 11 can achieve unguided movement during telescopic motion, or it can be equipped with a guide rail to achieve higher precision. The push device and the power input end can be synchronously driven by a gearbox. However, if the load-bearing capacity is small or the stability requirement is not high, the gearbox can be directly disassembled and connected directly to the power input end.

[0025] The function of the carrier connector 12 is to connect the two push chains to the pushed item. The carrier connector 12 is directly connected to the pushed item, making installation and disassembly convenient.

[0026] The two push chains are connected to the carrier joint 12. The two push chains are connected to each other at the head using a pin. The carrier joint 12 can be used to connect the object being pushed and also prevents the two push chains from unraveling at the ends.

[0027] In one embodiment, each push chain consists of an interlocking chain block 14 and a connecting chain block 15, with the connecting chain block 15 connecting between two adjacent interlocking chain blocks 14, thereby creating an alternating splicing arrangement of the interlocking chain blocks 14 and the connecting chain blocks 15.

[0028] The interlocking chain block 14 includes a top surface 16 and a bottom surface 17 facing each other. The top surface 16 is formed with a mutual interlocking relief groove 18, and the bottom surface 17 is formed with a splicing groove for splicing with the connecting chain block 15. The connecting chain block 15 is integrally formed with a splicing part for inserting into the splicing groove. The splicing part is provided with a pin hole 19, and the pin 27 passes through the pin hole 19. The inner wall of the splicing groove is reserved with a connecting hole for the end of the pin 27 to pass through. The power input component is driven and connected to the end of the pin 27. Each interlocking chain block 14 of the push chain is formed with interlocking arc surfaces 20 that are connected to each other.

[0029] Among them, the clearance groove 18, the splicing groove and the interlocking arc surface 20 are all set in pairs, and the stop plane 21 is formed between a pair of interlocking arc surfaces 20.

[0030] The working principle and beneficial effects of the above technical solution are as follows: The push chain structure disclosed in this invention differs significantly from traditional chain structures. The push chain comprises interlocking chain blocks 14 with special curved surfaces and connecting chain blocks 15. A sprocket drives a pin 27 to move the push chain. A guide groove is formed on the inner wall of the housing 10 to allow the push chain to travel along a predetermined trajectory, further constraining its movement. After the push chain engages in the middle of the housing 10, it is delivered from the top of the housing 10. The interlocking chain blocks 14 of the two push chains engage sideways and lock together, increasing the rigidity of the push chain assembly 11.

[0031] The pin 27 is made of fiber material, preferably carbon fiber, glass fiber, etc., and can also be made by fiber winding molding. If the application scenario does not restrict the material, metal and other types of materials can also be used.

[0032] The push chain assembly 11 consists of two push chains with the same structure. Each push chain consists of an interlocking chain block 14, a connecting chain block 15, and a pin 27. The two types of chain blocks are assembled alternately and connected by the pin 27. The pin 27 has an interference fit with the connecting hole of the interlocking chain block 14 and a clearance fit with the pin hole 19 of the connecting chain block 15.

[0033] The engagement arc surface 20 and the stop plane 21 are designed as hyperboloid and flat surfaces, respectively. When the two push chains engage, the engagement arc surfaces 20 of adjacent engagement chain blocks 14 are used to lock each other, and the stop planes 21 are used to stop each other, preventing mutual misalignment between the two engagement chain blocks 14. The end of the pin 27 protrudes from the surface of the engagement chain block, and the inner wall of the housing 10 is provided with a guide groove that slides to the end of the pin 27, thereby facilitating guidance and driving and ensuring that the push chains move along a predetermined trajectory. The two push chains engage in a staggered manner, that is, the engagement chain block of one push chain is exactly locked in the middle of the two engagement chain blocks of the other push chain, thus ensuring the relative positional relationship of the two push chains.

[0034] Because the interlocking chain block 14 has a symmetrical structure, the two opposing sides are used for the interlocking of the upper and lower interlocking chain blocks 14. The interlocking arc surface 20, which serves as the interlocking contact area, is composed of two arc surfaces. Other arc surface structures can also be used. In addition, the clearance groove 18 is used to avoid the splicing part of the connecting chain block 15.

[0035] In addition, part of the bottom contour of the transport joint 12 is the same as the side contour of the engagement chain block of one of the push chains, and part of it is the same as the side contour of the connecting chain block of another push chain. The top is used to connect the object being pushed. The present invention uses a "T" type joint, but other connection methods can also be used.

[0036] In one embodiment, a biting arc surface 22 is formed on the connecting chain block 15 of one of the push chains for engaging and connecting with the biting chain block 14 of another push chain. The connecting chain block 15 is also integrally formed with a blocking part for blocking adjacent biting chain blocks 14.

[0037] The working principle and beneficial effects of the above technical solution are as follows: The top surface 16 of the interlocking chain block 14 has a concave surface, which facilitates interlocking with the interlocking arc surface 22 of the connecting chain block 15 on the opposite side. The current connecting chain block 15 is a one-piece design, but it can also be a split structure, as long as the interlocking arc surface 22 and the concave surface of the top surface 16 of the interlocking chain block interlock with each other.

[0038] In one embodiment, the power input component includes: Drive shaft 13 and driven shaft 23 are mounted on housing 10. Drive shaft 13 and driven shaft 23 are equipped with end drive sprockets 24 that cooperate with pin 27. Drive shaft 13 is a power input shaft. Gearbox 25 is mounted on the surface of housing 10. Drive shaft 13 and driven shaft 23 extend into gearbox 25. A pair of meshing transmission gears 26 are located inside gearbox 25 and are respectively mounted on drive shaft 13 and driven shaft 23.

[0039] The working principle and beneficial effects of the above technical solution are as follows: The power input end drives the drive shaft 13 to rotate. The drive shaft 13 drives the passive shaft 23 to rotate synchronously through a pair of transmission gears 26 meshing in the gearbox 25. This drives the two sprockets 24 located in the housing 10 to rotate synchronously, thereby realizing the synchronous movement of the two push chains that are connected to the sprockets 24, thus realizing the telescopic movement of the push chain assembly 11.

[0040] The synchronization of the two sprockets 24 is ensured by a pair of higher precision transmission gears 26, which in turn ensures the smoothness and accuracy of the drive and increases the strength of the push chain.

[0041] The drive shaft 13 can be connected to a servo-controlled motor as a power input, which can control the extension speed and distance more precisely.

[0042] In one embodiment, the top of the housing 10 is provided with a top opening for two push chains to extend out. The housing 10 is detachably assembled from a front housing and a rear housing. The front housing and the rear housing are symmetrically arranged, and the inner walls of both are formed with guide grooves for the push chains to travel along a predetermined trajectory.

[0043] The working principle and beneficial effects of the above technical solution are as follows: The housing 10 adopts a front and rear housing combination, symmetrically separated by the center lines of the two push chains. Therefore, the front and rear housing structures are basically the same, with only slight differences in the fastener positions, reducing the complexity of the device and facilitating manufacturing. First, the front and rear housings are fastened together with screws. Bushings, drive shaft 13, and driven shaft 23 are used to symmetrically fix the sprocket 24 to its fixed position on the housing 10, ensuring the sprocket 24 rotates freely, achieving both accurate positioning and convenient installation. Second, guide grooves are provided along the movement trajectory of the push chains to ensure smooth movement along the designed path. After assembly, the two housings have good airtightness, retaining only the top opening where the push chains extend, ensuring a clean internal space. During assembly, the push chains can be directly inserted through the top opening, facilitating assembly and replacement. Finally, mounting holes are provided around the housing for easy disassembly and assembly of the entire machine.

[0044] In one embodiment, the entire material is made of engineering plastic.

[0045] The working principle and beneficial effects of the above technical solution are as follows: The components of the push chain involved in this invention, including the sprocket 24 and the housing 10, are all made of engineering plastics or fiber-reinforced materials. These materials possess self-lubricating properties, require no oiling maintenance, and are characterized by light weight, high cleanliness, and maintenance-free operation. Compared to metal push chains, this invention offers advantages such as lower noise, larger contact area, simpler structure, lower cost, and more reliable engagement.

[0046] Specifically, the interlocking chain blocks, connecting chain blocks, chain joints, housings, rear housings, sprockets, gears, and other components are all made of engineering plastics, preferably polyoxymethylene (POM), polyamide (PA), or polyetheretherketone (PEEK). These components are formed through injection molding or machining, and fiber materials can be added to enhance their strength, wear resistance, and impact resistance. Metal materials can also be used if the application scenario has no special requirements.

[0047] In one embodiment, the sprocket 24 has involute teeth, and the transmission gear 26 is any one of a spur gear, helical gear, or herringbone gear.

[0048] The working principle and beneficial effects of the above technical solution are as follows: The sprocket 24 has involute teeth, which can increase pushing accuracy and smoothness. The transmission gear 26 is a spur gear, but helical gears or herringbone gears can also be used to increase transmission smoothness.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A multi-faceted interlocking plastic push chain device, characterized in that, include: Shell (10); Push chain assembly (11) is installed inside housing (10). Push chain assembly (11) includes two push chains. The two push chains are connected to a carrier joint (12). A guide groove is formed on the inner wall of housing (10) for the push chains to travel along a predetermined trajectory. A power input assembly is mounted on the surface of the housing (10) and is used to drive the push chain. When the two push chains mesh, the push carrier joint (12) moves forward; Each push chain consists of interlocking chain blocks (14) and connecting chain blocks (15). The connecting chain blocks (15) are connected between two adjacent interlocking chain blocks (14), so that the interlocking chain blocks (14) and connecting chain blocks (15) are arranged in an alternating splicing manner. The interlocking chain block (14) includes a top surface (16) and a bottom surface (17) facing each other. The top surface (16) is formed with a mutual interlocking relief groove (18). The bottom surface (17) is formed with a splicing groove for splicing with the connecting chain block (15). The connecting chain block (15) is integrally formed with a splicing part for inserting into the splicing groove. The splicing part is provided with a pin hole (19). The pin (27) passes through the pin hole (19). The inner wall of the splicing groove is reserved with a connection hole for the end of the pin (27) to pass through. The power input component is connected to the end of the pin (27). Each interlocking chain block (14) of the push chain is formed with interlocking arc surfaces (20) that are connected to each other. The clearance groove (18), splicing groove and interlocking arc surface (20) are all provided in pairs, and the stop plane (21) is formed between a pair of interlocking arc surfaces (20); One of the push chains has a connecting chain block (15) with a meshing arc surface (22) for meshing chain block (14) of another push chain to connect with it. The connecting chain block (15) also has a blocking part integrally formed for blocking adjacent meshing chain blocks (14). The engagement arc surface (20) and the stop plane (21) are designed as hyperboloid and plane, respectively. When the two push chains engage, the engagement arc surface (20) of the adjacent engagement chain blocks (14) is used to lock each other, and the stop plane (21) is used to stop each other. The end of the pin (27) is exposed on the surface of the engagement chain block. The inner wall of the housing (10) is provided with a guide groove that slides with the end of the pin (27). The clearance groove (18) is used to avoid the splicing part of the connecting chain block (15). The top surface (16) of the interlocking chain block (14) is provided with a concave surface, which facilitates interlocking with the interlocking arc surface (22) of the connecting chain block (15) on the opposite side.

2. The multi-faceted interlocking plastic push chain device according to claim 1, characterized in that, The power input components include: Drive shaft (13) and driven shaft (23) are mounted on housing (10). Drive shaft (13) and driven shaft (23) are equipped with end drive sprockets (24) that cooperate with pin (27). Drive shaft (13) is a power input shaft. Gearbox (25) is mounted on the surface of housing (10). Drive shaft (13) and driven shaft (23) extend into gearbox (25). A pair of meshing transmission gears (26) are located in gearbox (25) and are mounted on drive shaft (13) and driven shaft (23) respectively.

3. The multi-faceted interlocking plastic push chain device according to claim 1, characterized in that, The top of the housing (10) has a top opening for two push chains to extend out. The housing (10) is made of a front housing and a rear housing that can be detachably spliced ​​together. The front housing and the rear housing are symmetrically arranged, and the inner walls of both are formed with guide grooves for the push chains to travel along a predetermined trajectory.

4. The multi-faceted interlocking plastic push chain device according to claim 1, characterized in that, The entire structure is made of engineering plastics.

5. The multi-faceted interlocking plastic push chain device according to claim 2, characterized in that, The sprocket (24) has an involute tooth profile, and the transmission gear (26) is any one of a spur gear, helical gear, or herringbone gear.

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