A chain automatic tensioning adjustment mechanism

Abstract

The present invention relates to the technical field of transmission mechanisms, and discloses an automatic chain tensioning adjustment mechanism, comprising two symmetrically arranged linear slide rails, a slider is provided on the linear slide rails in sliding cooperation connection, a base is installed on the slider, a sprocket assembly is symmetrically installed on the base opposite to the slider, hexagonal bars are symmetrically connected on both sides of the base, a counterweight is assembled on the hexagonal bar, a limit seat is provided below the linear slide rail, a seventh fastener is provided through the limit seat opposite to the lower side of the base, a bending plate is installed on the base, a clamping assembly is provided on the bending plate, and when the seventh fastener contacts the clamping assembly on the bending plate, the seventh fastener acts on the output end of the clamping assembly to approach the linear slide rail. The present invention facilitates automatically tightening the chain by weight according to the height of the stretching roller, thereby achieving a fast response tensioning effect.

Description

Technical Field

[0001] The invention relates to the technical field of transmission mechanisms, in particular to an automatic chain tensioning adjustment mechanism. Background Art

[0002] The new energy industry has developed rapidly in recent years. At present, lithium-ion battery separators are widely used in new energy vehicles, energy storage power stations, electric bicycles, mobile phones and other digital electronic products. There is a longitudinal stretching process in the production process of the separator. In the longitudinal stretching process, the gap between the rollers is small and the arrangement is close. Usually, a chain structure is used to assist the threading of the diaphragm. The chain will become loose during long-term use, affecting the transmission, and the upper row of stretching rollers occasionally need to be lifted. In order to ensure continuous production, a real-time tensioning system is inevitable. The existing tensioning method mainly relies on manual adjustment.

[0003] Because manual adjustment greatly increases the workload and is inefficient. Therefore, based on the above technical problems, a chain automatic tensioning adjustment mechanism is needed to achieve real-time tensioning of the chain during the diaphragm production process. Summary of the invention

[0004] The object of the present invention is to provide an automatic chain tensioning adjustment mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A chain automatic tensioning adjustment mechanism comprises two symmetrically arranged linear slide rails, a slider is provided on the linear slide rails in a sliding cooperation connection, a base is installed on the slider, a sprocket assembly is symmetrically installed on the base opposite to the slider, hexagonal bars are symmetrically connected on both sides of the base, a counterweight is assembled on the hexagonal bar, a limit seat is provided below the linear slide rail, a seventh fastener is provided through the limit seat opposite to the lower side of the base, a bending plate is installed on the base, a clamping assembly is provided on the bending plate, and when the seventh fastener contacts the clamping assembly on the bending plate, the seventh fastener acts on the output end of the clamping assembly to approach the linear slide rail.

[0007] As a further solution of the present invention: a plurality of third fasteners for connecting to the vertical facade are arranged through the linear slide rail, slide rail blocks are symmetrically arranged on the upper and lower sides of the linear slide rail, a fourth fastener for connecting to the vertical facade is arranged through the slide rail block, and a plurality of sixth fasteners for connecting to the vertical facade are arranged through the limit seat.

[0008] As a further solution of the present invention: hexagonal bars are symmetrically threadedly connected on both sides of the base, the two hexagonal bars on the same side are arranged in parallel, and the counterweight block is slidably connected to the outer periphery of the two parallel hexagonal bars.

[0009] As a further solution of the present invention: there are threads on both sides of the hexagonal rod, and the middle is in the shape of a hexagonal rod. A counterweight baffle is provided on the side of the counterweight block away from the base. The counterweight baffle is slidably sleeved on the periphery of the two hexagonal rods on the same side. A fifth fastener is provided on the side of the counterweight baffle away from the counterweight block, and the fifth fastener is threadedly sleeved on the periphery of the hexagonal rod.

[0010] As a further solution of the present invention: the sprocket assembly includes a sprocket shaft, the bottom of the sprocket shaft is a disc, and a shaft is welded in the middle, four holes are set through the disc located on the sprocket shaft, and a first fastener passes through the four holes to fix the sprocket shaft to the base, and a sprocket is rotatably connected to the outer periphery of the end of the sprocket shaft through a bearing.

[0011] As a further solution of the present invention: two threaded holes are provided at the end of the sprocket shaft, and a bearing gland for fixing the position of the bearing is assembled and connected to the threaded hole through a second fastener.

[0012] As a further solution of the present invention: a hole is provided in the sprocket, a retaining ring groove is provided near the edge of the hole, and a retaining ring is installed in the retaining ring groove.

[0013] As a further solution of the present invention: the bent plate is an "L"-shaped bent plate structure, one side of the bent plate is fitted on the bottom of the base and fixed to the bottom of the base by bolts or screws, and the other side of the bent plate is embedded on the side of the base facing the linear slide rail and is arranged opposite to the seventh fastener.

[0014] As a further solution of the present invention: a cavity is embedded in the bending plate, a vertical channel is penetrated through the cavity on the side facing the seventh fastener, horizontal channels are penetrated through both sides of the cavity and are arranged opposite to the linear slide rail, and the clamping assembly is arranged in the cavity.

[0015] As a further solution of the present invention: the snap-on assembly includes fan-shaped plates symmetrically rotating at both ends in the cavity and a support rod slidably connected in the horizontal channel, and the end of the support rod extending into the cavity is fixedly connected with a ball head that slides in contact with the fan-shaped plate.

[0016] As a further solution of the present invention: a spring is connected between the ball head and the inner wall of the cavity, and the fan-shaped plate is movably fitted on a side of the cavity where a vertical channel is provided.

[0017] Anti-skid pads are inlaid at the positions where the linear slide rail and the horizontal channel are opposite to each other.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the base and the sprocket assembly can move vertically through the cooperation of the slider and the linear slide rail. When the chain is loose, the base and the sprocket assembly can slide vertically downward to tighten the chain through the counterweights of the counterweight blocks on both sides. When the base and the sprocket assembly are lowered to a certain extent, the base can contact the seventh fastener on the limit seat, so that the seventh fastener on the limit seat is used to protect the support and avoid excessive descent. The descending space of the base and the sprocket assembly can be controlled by adjusting the length of the seventh fastener passing through the limit seat. Furthermore, by adding a bending plate, when the base and the sprocket assembly are lowered to the limit, the seventh fastener can be used to contact the clamping assembly in the bending plate, so that the output end of the clamping assembly is close to the linear slide rail and the friction force of the extrusion is used to reduce the downward pressure of the base and the sprocket assembly on the seventh fastener, thereby avoiding the instability of the connection between the limit seat and the seventh fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 for Figure 1 main view.

[0021] Figure 3 for Figure 1 Left view of .

[0022] Figure 4 for Figure 1 Top view of the .

[0023] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of area A in the middle.

[0024] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of area B in the middle.

[0025] Figure 7 It is a schematic diagram of the structure of the sprocket assembly in the present invention.

[0026] Figure 8 It is a cross-sectional view of the sprocket assembly in the CC direction of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the bent plate in the present invention.

[0028] Fig.10 It is a schematic diagram of the structure of the inner clamping assembly of the bent plate in the present invention.

[0029] In the figure: 1-base, 11-hexagonal rod, 2-sprocket assembly, 21-sprocket shaft, 22-first fastener, 23-bearing, 24-sprocket, 25-retaining ring, 26-bearing cover, 27-second fastener, 3-linear slide, 31-slider, 32-third fastener, 33-slide block, 34-fourth fastener, 35-anti-slip pad, 4-counterweight block, 41-counterweight baffle, 42-fifth fastener, 5-limit seat, 51-sixth fastener, 52-seventh fastener, 6-bending plate, 61-cavity, 62-horizontal channel, 63-vertical channel, 64-fan plate, 65-support rod, 66-ball head. DETAILED DESCRIPTION

[0030] See also Figure 1-Figure 3 In an embodiment of the present invention, a chain automatic tensioning adjustment mechanism includes two symmetrically arranged linear slide rails 3, a slider 31 is slidably connected on the linear slide rails 3, a base 1 is installed on the slider 31, a sprocket assembly 2 is symmetrically installed on the base 1 opposite to the slider 31, a hexagonal rod 11 is symmetrically connected on both sides of the base 1, a counterweight 4 is assembled on the hexagonal rod 11, a limit seat 5 is provided below the linear slide rail 3, a seventh fastener 52 is penetrated on the limit seat 5 and opposite to the lower side of the base 1, a bending plate 6 is installed on the base 1, and a clamping assembly is provided on the bending plate 6. When the seventh fastener 52 contacts the clamping assembly on the bending plate 6, the seventh fastener 52 acts on the output end of the clamping assembly to approach the linear slide rail 3.

[0031] In this embodiment, a plurality of third fasteners 32 are provided through the linear slide rail 3, and the linear slide rail 3 is vertically fixedly installed on the vertical vertical surface by the third fasteners 32. Slide rail blocks 33 are symmetrically provided on the upper and lower sides of the linear slide rail 3, and a fourth fastener 34 is provided through the slide rail block 33. The slide rail block 33 is fixedly installed on the vertical vertical surface by the fourth fastener 34. The chain to be tensioned is engaged and passes through the lower sides of the two sprocket assemblies 2. The slide rail block 33 can cooperate to protect and close the channel of the linear slide rail 3, thereby preventing the slider 31 from sliding off the linear slide rail 3. The limit seat 5 is fixed on the vertical vertical surface by a plurality of sixth fasteners 51. The base 1 and the sprocket assembly 2 can move vertically through the cooperation of the slider 31 and the linear slide 3. When the chain is loose, the base 1 and the sprocket assembly 2 can slide vertically downward to tighten the chain through the counterweights 4 on both sides. When the base 1 and the sprocket assembly 2 drop to a certain extent, the base 1 can contact the seventh fastener 52 on the limit seat 5, so that the seventh fastener 52 on the limit seat 5 is used to protect the support and avoid excessive drop. The length adjustment of the seventh fastener 52 through the limit seat 5 can control the drop space of the base 1 and the sprocket assembly 2. Furthermore, by adding the bending plate 6, when the base 1 and the sprocket assembly 2 drop to the limit, the seventh fastener 52 can be used to contact the clamping assembly in the bending plate 6, so that the output end of the clamping assembly is close to the linear slide 3 and the friction force of the squeeze is used to reduce the downward pressure of the base 1 and the sprocket assembly 2 on the seventh fastener 52, so as to avoid the instability of the connection between the limit seat 5 and the seventh fastener 52.

[0032] Preferably, the two sides of the base 1 are symmetrically threaded with hexagonal bars 11, the two hexagonal bars 11 on the same side are arranged in parallel, the counterweight 4 is slidably connected to the periphery of the two parallel hexagonal bars 11, the two sides of the hexagonal bars 11 are threaded, and the middle is in the shape of a hexagonal bar, and multiple counterweights 4 can be provided as needed, and a counterweight baffle 41 is also provided on the side of the counterweight 4 away from the base 1, and the counterweight baffle 41 is slidably sleeved on the periphery of the two hexagonal bars 11 on the same side, and a fifth fastener 42 is provided on the side of the counterweight baffle 41 away from the counterweight 4, and the fifth fastener 42 is threadedly sleeved on the periphery of the hexagonal bars 11. The counterweight can be controlled by the arrangement of the counterweight 4, and the counterweight 4 can be prevented from falling off the hexagonal bars 11 by the counterweight baffle 41, and the fifth fastener 42 can be screwed on the hexagonal bars 11 through threaded cooperation, so as to adjust and cooperate with the counterweight baffle 41 to prevent the counterweight 4 from falling off.

[0033] like Figure 4-Figure 8As shown, the sprocket assembly 2 includes a sprocket shaft 21, the bottom of the sprocket shaft 21 is a thick disc, and a shaft is welded in the middle. Four holes are set through the disc located on the sprocket shaft 21. The first fastener 22 passes through the four holes to fix the sprocket shaft 21 to the base 1, and the end of the sprocket shaft 21 becomes thinner. A sprocket 24 is rotatably connected to the outer periphery of the end of the sprocket shaft 21 through a bearing 23. The sprocket 24 is used for contact and engagement with the chain, and two threaded holes are provided at the end of the sprocket shaft 21, and the threaded holes are assembled and connected with a second fastener 27. A bearing cover 26 for fixing the position of the bearing 23 is provided with a hole in the sprocket 24, and a retaining ring groove is provided near the edge of the hole. A retaining ring 25 is installed in the retaining ring groove. When the sprocket 24 and the chain cooperate, when the stretching roller moves up and down, the tightness of the chain changes, and the base 1 and the sprocket assembly 2 will move up and down through the cooperation of the slider 31 and the linear slide rail 3. In this way, no matter how the position of the stretching roller changes, the entire chain can be tensioned in real time due to the gravity of the entire mechanism, and the tensioning force can be adjusted by the number of counterweights 4.

[0034] like Figure 9-10 As shown, the bending plate 6 is an "L"-shaped bent plate structure, one side of the bending plate 6 is fitted on the bottom of the base 1 and fixed to the bottom of the base 1 by bolts or screws, the other side of the bending plate 6 is embedded on the side of the base 1 facing the linear guide rail 3, and is arranged opposite to the seventh fastener 52, a cavity 61 is embedded in the bending plate 6, a vertical channel 63 is penetrated through the cavity 61 on the side facing the seventh fastener 52, horizontal channels 62 are penetrated on both sides of the cavity 61 and are arranged opposite to the linear guide rail 3, and the snap-on assembly is arranged in the cavity 61.

[0035] Preferably, the snap-on assembly includes a sector plate 64 symmetrically rotating at both ends of the cavity 61 and a strut 65 slidably connected to the horizontal channel 62 , and the end of the strut 65 extending into the cavity 61 is fixedly connected with a ball head 66 that slides in contact with the sector plate 64 . Among them, a spring is connected between the ball head 66 and the inner wall of the cavity 61, and the fan-shaped plate 64 is movably fitted on a side of the vertical channel 63 in the cavity 61. When the seventh fastener 52 contacts the fan-shaped plate 64, they continue to be relatively close, and the seventh fastener 52 can push the fan-shaped plate 64 to rotate in the cavity 61, thereby pushing the support rod 65 to slide outward on the horizontal channel 62 through contact with the ball head 66. The linear slide rail 3 and the horizontal channel 62 are relatively inlaid with an anti-skid gasket 35 made of rubber material and with anti-skid patterns on the surface. When the end of the support rod 65 extends out and contacts the anti-skid gasket 35, it can cooperate with the pressure to prevent the base 1 and the sprocket assembly 2 from continuing to descend through friction, thereby avoiding excessive force on the seventh fastener 52, which causes an unstable connection between the seventh fastener 52 and the limit seat 5, and also avoids pressure deformation.

Claims

1. A chain automatic tensioning adjustment mechanism, comprising two symmetrically arranged linear slide rails, a slider is provided on the linear slide rails in a sliding and matching manner, a base is installed on the slider, and a sprocket assembly is symmetrically installed on the base opposite to the slider, characterized in that: The two sides of the base are symmetrically connected with hexagonal bars, and the hexagonal bars are equipped with counterweights. A limit seat is provided below the linear slide rail, and a seventh fastener opposite to the lower side of the base is provided through the limit seat. A bending plate is installed on the base, and a clamping assembly is provided on the bending plate. When the seventh fastener contacts the clamping assembly on the bending plate, the seventh fastener acts on the output end of the clamping assembly to move closer to the linear slide rail; The bent plate is an "L"-shaped bent plate structure, one side of the bent plate is fitted on the bottom of the base and fixed to the bottom of the base by bolts or screws, and the other side of the bent plate is embedded on the side of the base facing the linear guide rail and is arranged opposite to the seventh fastener; A cavity is embedded in the bending plate, a vertical channel is penetrated through the cavity on the side facing the seventh fastener, horizontal channels are penetrated through the two sides of the cavity and are arranged opposite to the linear slide rail, and the clamping assembly is arranged in the cavity; The clamping assembly comprises sector plates symmetrically rotating at both ends of the cavity and a support rod slidably connected in the horizontal channel. The end of the support rod extending into the cavity is fixedly connected with a ball head slidably fitted with the sector plates.

2. The automatic chain tensioning adjustment mechanism according to claim 1, characterized in that: The linear slide rail is provided with a plurality of third fasteners for connecting with the vertical facade, and slide rail blocks are symmetrically provided on the upper and lower sides of the linear slide rail. The slide rail blocks are provided with a fourth fastener for connecting with the vertical facade, and the limit seat is provided with a plurality of sixth fasteners for connecting with the vertical facade.

3. The automatic chain tensioning adjustment mechanism according to claim 2, characterized in that: The two sides of the base are symmetrically threaded with hexagonal bars, the two hexagonal bars on the same side are arranged in parallel, and the counterweight blocks are slidably connected to the peripheries of the two parallel hexagonal bars.

4. The automatic chain tensioning adjustment mechanism according to claim 3, characterized in that: There are threads on both sides of the hexagonal rod, and the middle is in the shape of a hexagonal rod. A counterweight baffle is provided on the side of the counterweight block away from the base. The counterweight baffle is slidably sleeved on the periphery of the two hexagonal rods on the same side. A fifth fastener is provided on the side of the counterweight baffle away from the counterweight block, and the fifth fastener is threadedly sleeved on the periphery of the hexagonal rod.

5. The automatic chain tensioning adjustment mechanism according to claim 1, characterized in that: The sprocket assembly includes a sprocket shaft, the bottom of the sprocket shaft is a disc, and a shaft is welded in the middle. Four holes are set through the disc of the sprocket shaft. The first fastener passes through the four holes to fix the sprocket shaft to the base. A sprocket is rotatably connected to the outer periphery of the end of the sprocket shaft through a bearing.

6. The automatic chain tensioning adjustment mechanism according to claim 5, characterized in that: The end of the sprocket shaft is provided with two threaded holes, and the threaded holes are assembled and connected with bearing pressure covers for fixing the bearing positions through second fasteners.

7. The automatic chain tensioning adjustment mechanism according to claim 5, characterized in that: A hole is arranged in the sprocket, a retaining ring groove is arranged near the edge of the hole, and a retaining ring is installed in the retaining ring groove.

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