A metal and plastic composite long-distance anti-collapse drag chain

Abstract

The present invention belongs to the technical field of drag chain equipment, and discloses a long-distance anti-collapse drag chain of metal and plastic composite, including multiple drag block groups, and the multiple drag block groups are limitedly hinged, and the drag block group includes a plastic body, a baffle and a metal pull plate, and the metal pull plate is embedded in the lower side of the plastic body, and a support column is provided at one end thereof, and a support hole is opened at the other end, and the support hole matches the support column. An arc groove is opened on the plastic body, and an arc block extends at one end of the plastic body. The arc block is integrally formed with the plastic body and the arc groove matches the arc block. Under the support of the support column, the arc groove and the arc block of the same side plastic body of the two connected drag block groups slide with each other. The present invention has a reasonable structure and strong practicality. By compounding metal and plastic and using the support column to open and close the drag block group, the load-bearing gravity between the drag block groups is converted into the longitudinal tension of the lower part and the top force of the upper part, thereby increasing the strength and load-bearing capacity of the drag chain and effectively preventing the deformation and collapse of the drag chain.

Description

Technical Field

[0001] The invention belongs to the technical field of drag chain equipment, and in particular relates to a long-distance anti-collapse drag chain composited with metal and plastic. Background Art

[0002] At present, drag chains have been widely used in many fields such as CNC machine tools, stone machinery, glass machinery, door and window machinery, injection molding machines, manipulators, lifting and transportation equipment, and automated warehouses. Drag chains can play a role in traction and protection of cables, oil pipes, air pipes, water pipes, etc. built into the machinery, and at the same time make the machinery look more beautiful as a whole. The existing drag chains are mostly composed of several drag block groups. When the drag chain is in use, it can be divided into three parts according to the state of motion: the lower section of the drag chain, the steering ring section, and the upper section of the drag chain. The existing drag chain has a small hanging load capacity. When the drag chain is long, the drag chain will bend to varying degrees under its own weight and the action of built-in cables and pipes. This bending phenomenon will damage the built-in cables and pipes of the drag chain. If the drag chain is subjected to too much force, it may even cause the upper section of the drag chain to overlap the lower section of the drag chain, commonly known as "collapsed waist". If the upper section of the drag chain and the lower section of the drag chain are continuously rubbed for a long time, it will not only damage the built-in lines, but also seriously wear the drag chain, causing the drag chain to be disconnected and broken, and seriously shortening the service life of the drag chain.

[0003] The existing solution to the above technical problems is usually to set a follow-up support mechanism that follows the movement of the towline under the long-distance towline to support the long-distance towline and avoid the "collapse" phenomenon. Although the follow-up support mechanism solves the technical problem of the collapse of the towline, it still has the following defects:

[0004] 1. For long-distance drag chains, the accompanying drag chain follower bracket is also long. This kind of long-distance drag chain follower bracket is not only expensive and difficult to manage in the later stage, but also unstable and prone to failure.

[0005] 2. The follow-up support mechanism is only suitable for long-distance drag chains running at low speeds. When long-distance drag chains reciprocate at high speeds, it will cause partial disconnection of the drag chain. Moreover, when the drag chain moves at high speeds for a long time, the follow-up support mechanism will cause greater wear on the drag chain, which will seriously affect the operating reliability of the drag chain and shorten its service life.

[0006] In summary, how to design a drag chain that will not collapse during long-distance turnover work, has a long service life, and has guaranteed quality has become a technical problem that needs to be solved urgently. Summary of the invention

[0007] The object of the present invention is to provide a long-distance anti-collapse drag chain made of metal and plastic composite to solve the problems mentioned in the above background technology.

[0008] In order to achieve the above invention purpose, the technical solution adopted is:

[0009] A long-distance anti-collapse drag chain made of metal and plastic composite, comprising a plurality of drag block groups, wherein the plurality of drag block groups are limit-hinged, the drag block groups comprising two plastic bodies with symmetrical structures and positions, baffles which are arranged at the upper and lower sides of the plastic bodies and are used to connect the two plastic bodies and carry foreign objects, and a metal pull plate which is used to connect and support the plurality of drag block groups, characterized in that the metal pull plate is embedded in the lower side of the plastic body, a support column is arranged at one end of the metal pull plate, and a support hole is opened at the other end, the support hole is penetrated through the plastic body and the support hole matches the support column, an arc groove is opened on the plastic body, an arc block is extended at one end of the plastic body, the arc block is integrally formed with the plastic body and the arc groove matches the arc block Matching, under the support of the support column, the arc groove and the arc block of the plastic body on the same side of the two connected drag block groups slide with each other, so as to facilitate the opening and closing of the plastic bodies, a limit block is provided at one end of the plastic body and located at the arc block, and a fan-shaped limit groove is provided at the other end of the plastic body and close to the arc groove, the limit block slides in the fan-shaped limit groove and respectively abuts against the inner wall of the groove on both sides of the fan-shaped limit groove, so as to facilitate the lever support and limited bending between the multiple drag block groups, thereby realizing the opening and closing of the drag block groups through the composite of metal and plastic and utilizing the support column, converting the load-bearing gravity between the drag block groups into the longitudinal tension at the bottom and the top force at the top, increasing the strength and load-bearing capacity of the drag chain, and effectively preventing the deformation and collapse of the drag chain.

[0010] The present invention is further configured as follows: the baffle is a flat structure with fixing grooves at both ends thereof, and fixing columns are fixedly connected to the baffle on the upper and lower inner walls of the plastic body, and the fixing columns are sleeved in the fixing grooves and matched with the fixing grooves.

[0011] The present invention is further configured as follows: a clamping block is integrally connected to one side of the fixing column, and clamping slots are symmetrically opened at the fixing slots at both ends of one side of the baffle, the clamping slots are clamped with the clamping block, and the clamping slots are kept at a distance from the two end vertices of the baffle.

[0012] The present invention is further configured such that: one end of the fixing column away from the fixing groove is vertically arranged to the inner wall of the plastic body.

[0013] The present invention is further configured as follows: a positioning groove is provided at one side edge of the arc groove, a positioning block is provided at one side edge of the arc block, and the positioning groove and the positioning block are both designed in an arc shape and match each other.

[0014] The present invention is further configured as follows: a first slide groove and a second slide groove are sequentially provided on one side of the plastic body and close to the support hole, and a first slider and a second slider are sequentially provided on the other side of the plastic body and close to the support column, the first slider matches the first slide groove, and the second slider matches the second slide groove.

[0015] The present invention is further configured as follows: a sliding baffle is provided on one side of the plastic body and close to the second slide groove, a sliding bar is extended at the other end of the plastic body and close to the second slide block, and the sliding bar abuts against the sliding baffle.

[0016] The present invention is further configured that: the plastic body and the baffle are both formed by one-step injection molding.

[0017] The present invention is further configured as follows: the metal pull plate is made of aluminum alloy, steel, copper alloy or zinc alloy.

[0018] The present invention is further configured as follows: an embedding hole is provided on the metal pull plate and between the support column and the support hole, an embedding block is provided on the lower side of the plastic body and located at the metal pull plate, the embedding block is integrally formed with the plastic body and the embedding block matches the embedding hole.

[0019] To sum up, compared with the prior art, the present invention discloses a metal and plastic composite long-distance anti-collapse drag chain, including multiple drag block groups, the drag block groups are composed of a plastic main body, a baffle and a metal pull plate, wherein the arc block is integrally formed with the plastic main body and the arc groove matches the arc block, and under the support of the support column, the arc groove and the arc block slide with each other, a limit block is provided at one end of the plastic main body and located at the arc block, and a fan-shaped limit groove is provided at the other end of the plastic main body and close to the arc groove, the limit block slides in the fan-shaped limit groove and respectively abuts against the inner walls of the grooves on both sides of the fan-shaped limit groove to complete the limited hinge between the drag block groups, so as to facilitate the opening and closing of the plastic main bodies on the same side, to facilitate the lever support and bending between multiple drag block groups, to prevent the collapse of the drag chain, and to improve the service life of the drag chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is an overall assembly diagram of a metal and plastic composite long-distance anti-collapse drag chain provided in this embodiment;

[0022] Figure 2 is a schematic diagram of the overall structure of the drag block group provided in this embodiment;

[0023] Figure 3 is a schematic diagram of the overall structure of the plastic body provided in this embodiment;

[0024] Figure 4 is a schematic diagram of the overall structure of the plastic body provided in this embodiment from another direction;

[0025] Figure 5 is a schematic diagram of the overall structure of the baffle provided in this embodiment;

[0026] Figure 6 This is one of the structural schematic diagrams of the two drag block groups provided in this embodiment;

[0027] Figure 7 This is the second structural schematic diagram of the two drag block groups provided in this embodiment;

[0028] Figure 8 It is a schematic diagram of the overall structure of the metal pull plate provided in this embodiment.

[0029] Figure numerals: 1. plastic body; 11. arc groove; 12. arc block; 13. limit block; 14. fan-shaped limit groove; 141. inner wall of the groove body; 15. fixing column; 151. clamping block; 16. positioning groove; 17. positioning block; 18. embedded block; 2. baffle; 21. fixing groove; 22. clamping groove; 3. metal pull plate; 31. support column; 32. support hole; 33. embedded hole; 4. first slide groove; 5. second slide groove; 6. first slider; 7. second slider; 8. sliding bar; 9. sliding baffle; 100. drag block group. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0034] A long-distance anti-collapse drag chain made of metal and plastic composite, such as Figure 1-Figure 4 As shown, it includes multiple drag block groups 100, and the multiple drag block groups 100 are limited and hinged. The drag block group 100 includes two plastic bodies 1 with symmetrical structures and positions, baffles 2 which are arranged on the upper and lower sides of the plastic body 1 and are used to connect the two plastic bodies 1 and carry foreign objects, and a metal pull plate 3 for connecting and supporting the multiple drag block groups 100. The metal pull plate 3 is embedded in the lower side of the plastic body 1, and a support column 31 is provided at one end of the metal pull plate 3, and a support hole 32 is opened at the other end. The support hole 32 is penetrated in the plastic body 1 and the support hole 32 matches the support column 31. An arc groove 11 is opened on the plastic body 1, and an arc block 12 is extended at one end of the plastic body 1. The arc block 12 is integrally formed with the plastic body 1 and the arc groove 11 matches the arc block 12. Under the support of the support column 31, the arc groove 11 and the arc block 12 of the plastic body 1 on the same side of the two connected drag block groups 100 slide against each other.

[0035] In the specific implementation process, the long-distance non-collapse drag chain made of metal and plastic composite is composed of several drag block groups 100 connected together, and each drag block group 100 includes a plastic body 1, a baffle 2 and a metal pull plate 3. The two plastic bodies 1 distributed at both ends of the baffle 2 are symmetrical in structure. Correspondingly, the two baffles 2 are respectively arranged on the upper and lower sides of the plastic body 1, that is, the cables or pipelines placed in the drag chain are carried by the upper and lower baffles 2, and the metal pull plate 3 embedded in the lower side of the plastic body 1 is used for connecting the plastic bodies 1 on the same side of multiple drag block groups 100, that is, the drag block group 100 is hinged by matching the support column 31 at one end thereof with the support hole 32 at the other end thereof. Specifically, in the drag chain including multiple drag block groups 100, the support column 31 of the metal pull plate 3 of the drag block group 100 relatively located at the rear is matched with the support hole 32 of the metal pull plate 3 of the drag block group 100 in front thereof, so as to realize the connection of multiple drag block groups 100.

[0036] Further, such as Figure 6As shown, the arc groove 11 is matched with the arc block 12 so that the two plastic bodies 1 on the same side fit each other. It should be noted that, in combination with the arc structure of the arc groove 11 and the arc block 12, when the arc block 12 is completely placed in the arc groove 11 and the inner walls of the two are abutted against each other, the upper and lower side edges of the two plastic bodies 1 remain horizontal, that is, under the support of the support column 31, the metal pull plate 3 located on the lower side of the plastic body 1 can distribute the self-gravity of the drag block group 100 and the gravity borne by the baffle 2 into the longitudinal tension of the metal pull plate 3, and cooperate with the top force between the arc block 12 and the positioning block 17 to improve the load-bearing capacity of the drag chain, and also prevent the collapse of the long-distance drag chain.

[0037] like Figure 2 , Figure 3 and Figure 5 As shown, the baffle 2 is a flat structure with fixing grooves 21 at both ends. Fixing columns 15 are fixedly connected to the baffle 2 on the upper and lower inner walls of the plastic body 1. The fixing columns 15 are sleeved in the fixing grooves 21 and match the fixing grooves 21.

[0038] In the specific implementation process, a clamping block 151 is integrally connected to one side of the fixing column 15, and clamping slots 22 are symmetrically opened on one side of the baffle 2 and at the fixing grooves 21 at both ends thereof. The clamping slots 22 are clamped with the clamping block 151, and the clamping slots 22 are kept at a distance from the two end vertices of the baffle 2, that is, the baffle 2 is fixedly connected to the plastic body 1 by matching the fixing column 15 with the fixing groove 21. At the same time, the clamped clamping slots 22 and the clamping blocks 151 further enhance the connection firmness between the baffle 2 and the plastic body 1, thereby improving the load capacity of the drag chain.

[0039] It should be noted that the end of the fixing column 15 away from the fixing groove 21 is vertically disposed to the inner wall of the plastic body 1 .

[0040] like Figure 3 , Figure 4 and Figure 7 As shown, a limit block 13 is provided at one end of the plastic body 1 and located at the arc block 12, and a fan-shaped limit groove 14 is opened at the other end of the plastic body 1 and close to the arc groove 11. The limit block 13 slides in the fan-shaped limit groove 14 and abuts against the inner wall surface 141 of the groove body on both sides of the fan-shaped limit groove 14.

[0041] In the specific implementation process, the long-distance drag chain bends and deforms accordingly with the environment and equipment displacement during operation, that is, under the support of the support column 31, the limit block 13 slides in the fan-shaped limit groove 14 to guide the bending between the two drag block groups 100 to achieve the opening and closing between the arc groove 11 and the arc block 12, and the limit block 13 is abutted against the inner wall surface 141 of the fan-shaped limit groove 14 to limit the bending angle between the drag block groups 100, thereby realizing the limited hinge between multiple drag block groups 100, that is, using the support column 31 as a lever The support is used to achieve limited bending, so as to avoid excessive deformation of the drag chain due to excessive turning angle of the drag block group 100, which may cause damage to the cables or pipelines carried by the baffle 2, and can also avoid accidental friction between the drag block groups 100, thereby improving the service life and practicality of the drag chain. At the same time, through the abutment between the limit block 13 and the inner wall 141 of the groove body, under the support of the support column 31, the load-bearing gravity between the drag block groups 100 is converted into the longitudinal tension at the bottom and the top force at the top, thereby increasing the strength and load-bearing capacity of the drag chain, and effectively preventing the deformation and collapse of the drag chain.

[0042] It should be noted that the specific curvature of the sector-shaped limiting groove 14 depends on the specific application environment, and the specific curvature of the sector-shaped limiting groove 14 is not limited here.

[0043] like Figure 3 and Figure 4 As shown, a positioning groove 16 is provided at one side edge of the arc groove 11, and a positioning block 17 is provided at one side edge of the arc block 12. The positioning groove 16 and the positioning block 17 are both designed in an arc shape and match each other. That is, through this arrangement, the arc grooves 11 and the arc blocks 12 between the multiple plastic bodies 1 can be accurately matched during the opening and closing process, and at the same time, the firmness of the multiple plastic bodies 1 can be deepened. Under the premise of cooperating with the fan-shaped limiting grooves 14 and the limiting blocks 13, the arc grooves 11 and the arc blocks 12 are guided to slide against each other, ensuring that the multiple drag block groups 100 are tightly connected and stably bent.

[0044] Furthermore, a first slide groove 4 and a second slide groove 5 are provided in sequence on one side of the plastic body 1 and near the supporting hole 32, and a first slider 6 and a second slider 7 are provided in sequence on the other side of the plastic body 1 and near the supporting column 31. The first slider 6 matches the first slide groove 4, and the second slider 7 matches the second slide groove 5. That is, through this arrangement, the cooperation between the plastic bodies 1 on the same side of the multiple drag block groups 100 is tighter. On the basis of the cooperation between the supporting column 31 and the supporting hole 32 of the metal pull plate 3, the connection relationship between the multiple plastic bodies 1 and the multiple drag block groups 100 is enhanced by successively using the arc groove 11 and the arc block 12, the limit block 13 and the fan-shaped limit groove 14, the positioning groove 16 and the positioning block 17, the first slider 6 and the first slide groove 4, and the second slider 7 and the second slide groove 5, thereby improving the connection strength and assembly strength of the drag chain, improving the carrying capacity of the drag chain, and improving the practical performance of the drag chain.

[0045] Among them, a sliding baffle 9 is also provided on one side of the plastic body 1 and close to the second slide groove 5, and a sliding bar 8 is extended at the other end of the plastic body 1 and close to the second sliding block 7. The sliding bar 8 abuts against the sliding baffle 9. In the opening and closing process of the arc groove 11 and the arc block 12, the sliding bar 8 is slidably connected relative to the sliding baffle 9, that is, the opening and closing of the arc groove 11 and the arc block 12 are guided by the sliding bar 8 to ensure the opening and closing trajectory of the arc groove 11 and the arc block 12, correct the bending eccentricity between the drag block groups 100, and ensure that the multiple drag block groups 100 are tightly connected and the bending is stable.

[0046] It should be noted that the plastic body 1 and the baffle 2 are both made of plastic material and are both injection molded in one step, so as to improve the overall strength of the plastic body 1 and further improve the overall strength of the drag block set 100 and the drag chain.

[0047] like Figure 8 As shown, the metal pull plate 3 is made of aluminum alloy, steel, copper alloy or zinc alloy, so as to meet the longitudinal tensile strength borne by the metal pull plate.

[0048] It should be noted that the metal pull plate 3 is embedded in the lower side of the plastic body 1 and remains level with the lower edge of the plastic body 1 , that is, a metal-plastic composite structure connection is formed to enhance the firmness of the plastic body 1 .

[0049] In the specific implementation process, an embedding hole 33 is opened on the metal pull plate 3 and located between the support column 31 and the support hole 32, and a plurality of embedding blocks 18 are provided on the lower side of the plastic body 1 and located at the metal pull plate 3. The embedding blocks 18 are integrally formed with the plastic body 1 and the embedding blocks 18 match the embedding holes 33. That is, through this arrangement, the embedding strength of the metal pull plate 3 and the plastic body 1 is guaranteed, the integrity of the metal pull plate 3 and the plastic body 1 is improved, and the overall strength of the drag block group 100 and the drag chain is guaranteed.

[0050] In summary, the present invention has the following beneficial effects: the present invention discloses a metal and plastic composite long-distance anti-collapse drag chain, which is composed of a plurality of drag block groups 100, wherein the drag block group 100 includes a plastic body 1, a baffle 2 and a metal pull plate 3, wherein the metal pull plate 3 is embedded in the lower side of the plastic body 1, and the plurality of plastic bodies 1 are connected through the support column 31 and the support hole 32 of the metal pull plate 3, and on this basis, the arc groove 11 and the arc block 12 are used to limit the sliding movement with each other, and at the same time, the limit block 13 and the fan-shaped limit groove 14 play a limiting role, and the baffles 2 arranged on the upper and lower sides of the plastic body 1 are used to carry cables or wires, and the support of the support column 31 In combination with the above, multiple drag block groups 100 are limitedly hinged, multiple plastic bodies 1 are supported by support columns 31 levers, limitedly opened and closed, and then matched with positioning blocks 17 through positioning grooves 16, first sliders 6 are matched with first slide grooves 4, and second sliders 7 are matched with second slide grooves 5, which improve the connection strength between plastic bodies 1 as a whole, and improve the connection strength between drag block groups 100. During the operation of the drag chain, the gravity of the cables or pipelines carried by the baffles 2 acting on the drag block group 100 is converted into the longitudinal tension of the metal pull plate 3, thereby improving the load capacity of the drag chain, solving the problems of sagging, collapse and breakage of the drag chain, and increasing the service life of the drag chain.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A long-distance anti-collapse drag chain made of metal and plastic composite, comprising a plurality of drag block groups, wherein the plurality of drag block groups are limitedly hinged, the drag block group comprises two plastic bodies with symmetrical structures and positions, baffles arranged at the upper and lower sides of the plastic body and used to connect the two plastic bodies and carry foreign objects, and a metal pull plate used to connect and support the plurality of drag block groups, characterized in that: The metal pull plate is embedded in the lower side of the plastic body, one end of which is provided with a support column, and the other end is provided with a support hole, the support hole is penetrated by the plastic body and the support hole matches the support column, an arc groove is provided on the plastic body, and an arc block is extended at one end of the plastic body, the arc block is integrally formed with the plastic body and the arc groove matches the arc block, under the support of the support column, the arc groove and the arc block of the plastic body on the same side of the two connected drag block groups slide with each other, so as to facilitate the opening and closing of the plastic bodies, a limit block is provided at one end of the plastic body and located at the arc block, and a fan-shaped limit groove is provided at the other end of the plastic body and close to the arc groove, the limit block slides in the fan-shaped limit groove and respectively abuts against the inner walls of the grooves on both sides of the fan-shaped limit groove, so as to facilitate the lever support and limit bending between the multiple drag block groups, thereby realizing the drag block group through the composite of metal and plastic and using the support column to open and close the drag block group. The load-bearing gravity between the two parts is converted into the longitudinal tension of its lower part and the top force of the upper part, thereby increasing the strength and load-bearing capacity of the drag chain and effectively preventing the drag chain from deforming and collapsing; the baffle is a flat structure, and fixed grooves are respectively provided at both ends of the baffle, and fixed columns are fixedly connected on the upper and lower inner walls of the plastic body and located at the baffle, and the fixed columns are sleeved in the fixed grooves and matched with the fixed grooves; a clamping block is integrally connected to one side of the fixed column, and clamping grooves are symmetrically opened at one side of the baffle and at the fixed grooves at both ends, and the clamping grooves are clamped with the clamping blocks, and the clamping grooves are kept at a distance from the two end vertices of the baffle; one end of the fixed column away from the fixed groove is vertically arranged with the inner wall of the plastic body; a first slide groove and a second slide groove are sequentially provided at one side of the plastic body and close to the supporting hole, and a first slider and a second slider are sequentially provided at the other side of the plastic body and close to the supporting column, and the first slider matches the first slide groove, and the second slider matches the second slide groove.

2. A metal and plastic composite long distance anti-collapse drag chain as claimed in claim 1, characterized in that: A positioning groove is provided at one side edge of the arc-shaped groove, and a positioning block is provided at one side edge of the arc-shaped block. The positioning groove and the positioning block are both designed in an arc shape and match each other.

3. A metal and plastic composite long distance anti-collapse drag chain as claimed in claim 1, characterized in that: A sliding baffle is also provided on one side of the plastic body and close to the second sliding groove, and a sliding bar is extended on the other end of the plastic body and close to the second sliding block, and the sliding bar abuts against the sliding baffle.

4. A metal and plastic composite long distance anti-collapse drag chain as claimed in claim 1, characterized in that: The plastic body and the baffle are both formed by one-step injection molding.

5. A metal and plastic composite long distance anti-collapse drag chain as claimed in claim 1, characterized in that: The metal pull plate is made of aluminum alloy, steel, copper alloy or zinc alloy.

6. A metal and plastic composite long distance anti-collapse drag chain as claimed in claim 1, characterized in that: An embedding hole is provided on the metal pull plate and between the support column and the support hole, and an embedding block is provided on the lower side of the plastic body and located at the metal pull plate. The embedding block is integrally formed with the plastic body and matches the embedding hole.

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