Chain tension adjusting device

Abstract

The utility model relates to a chain tension adjusting device, which comprises an adjusting seat, a chain tension adjusting device and a chain tension adjusting device, the supporting swinging piece is provided with a pivoting part pivoted on the adjusting seat, a leaning part far away from the pivoting part and a pivoting swinging part facing the seat part; the rolling piece is pivoted on the abutting part, is used for the chain to abut against and is used for bearing the tension and transmitting the tension to the supporting swing piece; and the elastic piece has elastic force acting on the supporting swing piece, the elastic force is used for compensating the tension of the chain, and the tension of the chain and the elastic force of the elastic piece act on the supporting swing piece at the same time, so that the elastic force of the elastic piece can compensate the tension of the chain, and the tension of the chain is automatically adjusted. And the tension of the chain is automatically kept within a set range value.

Description

Technical Field

[0001] This utility model relates to adjusters, and in particular to a chain tension adjusting device. Background Technology

[0002] In many industrial machines, motors serve as the primary power source, typically connected to chains via a spindle to transmit kinetic energy to other mechanical components, driving various devices. Chain tension is crucial for the overall power transmission of the machinery; an excessively loose chain may slip or derail, causing equipment downtime or even damage. In the punch press industry, this can lead to wobbling during slide height adjustment or power transmission, further affecting work accuracy. Excessive tension, on the other hand, can increase wear on the chain and related components, accelerating malfunctions. Appropriate tension, however, reduces slippage losses during chain movement, ensuring efficient power transmission.

[0003] Traditionally, chain tension adjustment has relied primarily on manual methods. Maintenance personnel typically adjust the chain tension by manipulating a mechanism located beneath the motor. This mechanism controls the chain's tightness to achieve the desired tension. However, this method requires highly experienced personnel and necessitates machine downtime, increasing equipment downtime and maintenance costs. Furthermore, manual adjustments have limited precision and may not consistently maintain the chain within its optimal tension range.

[0004] On the other hand, even after adjustment, the chain tension will gradually loosen or become too tight again as the equipment continues to operate. Therefore, regular checks and repeated adjustments are necessary, which is undoubtedly a burden for equipment running for extended periods. Especially in highly automated production environments, this manual adjustment mechanism struggles to meet the demands of efficient and stable operation. Utility Model Content

[0005] The purpose of this invention is to provide a chain tension adjustment device that can solve one of the above-mentioned problems.

[0006] To achieve the aforementioned objectives, this utility model provides a chain tension adjustment device suitable for use with a chain, the chain providing tension. The chain tension adjustment device includes: an adjustment seat having a base portion; a support swing member having a pivot portion pivotally mounted on the adjustment seat, a resting portion away from the pivot portion, and a swing portion facing the base portion; a rolling member pivotally mounted on the resting portion and for the chain to rest against, for bearing the tension and transmitting the tension to the support swing member; and an elastic member having a first elastic portion disposed on the base portion, a second elastic portion opposite to the first elastic portion and disposed on the swing portion, and a spring force acting on the support swing member, the spring force being used to compensate for the chain tension.

[0007] The advantages of this invention are as follows: By combining the support component with the elastic component, the support component is supported not only by the tension of the chain but also by the elastic force of the elastic component. As the tension of the chain and the elastic force of the elastic component act on the support component simultaneously, the elastic force of the elastic component compensates for the tension of the chain, thereby automatically adjusting the tension of the chain and keeping it within a set range.

[0008] Preferably, the chain tension adjustment device further includes a sensor located on the seat of the adjustment base and having a sensing part corresponding to the pivot. The sensing part has a sensing distance, and when the pivot is within the sensing distance, it outputs a sensing signal.

[0009] Preferably, the support member also has a limiting strip hole located between the pivot portion and the abutment portion; the chain tension adjustment device also includes a limiting pin disposed on the adjustment seat and having a limiting portion located within the limiting strip hole.

[0010] Preferably, the limiting strip hole of the support ornament is arc-shaped.

[0011] Preferably, the chain tension adjusting device is suitable for installation on a machine base having a support portion. The chain tension adjusting device also has an adjusting screw and a locking fastener. The adjusting seat is adjustablely mounted on the machine base and also has an adjusting pivot portion pivotally mounted on the machine base, an adjusting screw hole away from the adjusting pivot portion, and a locking strip hole. The adjusting screw is adjustablely screwed into the adjusting seat and has an end portion abutting against the support portion and a threaded portion screwed into the adjusting screw hole. The locking fastener is locked into the machine base and has a body portion passing through the locking strip hole and a head portion for pressing against or releasing the pressing against the adjusting seat.

[0012] Preferably, the adjusting screw also has a drive portion opposite to that end.

[0013] In addition, to achieve the aforementioned objective, this utility model provides a chain tension adjustment device suitable for a chain that provides tension. The chain tension adjustment device includes: an adjustment seat having a base portion; a support member having a pivot portion pivotally mounted on the adjustment seat, a resting portion away from the pivot portion and for the chain to rest against, and a pivot portion facing the base portion, the resting portion being used to bear the tension; and an elastic member having a first elastic portion disposed on the base portion, a second elastic portion opposite to the first elastic portion and disposed on the pivot portion, and a spring force acting on the support member, the spring force being used to compensate for the chain tension. The difference from the above design is that the resting portion of the support member is directly for the chain to rest against, so that the support member directly receives the tension provided by the chain, without the need to assemble rolling elements, thus achieving the effect of adjusting the chain tension. Attached Figure Description

[0014] Figure 1 This is a perspective view of an embodiment of the present invention, showing the present invention mounted on a machine base;

[0015] Figure 2 yes Figure 1 The front view;

[0016] Figure 3 yes Figure 1 Top view;

[0017] Figure 4 This is an exploded perspective view of an embodiment of the present utility model;

[0018] Figure 5 yes Figure 3 Cross-sectional view of line segment 5-5;

[0019] Figure 6 This is a schematic diagram of the operation of this utility model, showing the abnormal state of chain tension; and

[0020] Figure 7 This is a schematic diagram of the operation of this utility model, showing the state of manually adjusting the tension.

[0021] Explanation of symbols in the attached diagram:

[0022] 11… machine

[0023] 111… Supporting part

[0024] 12… motor

[0025] 121…motor shaft

[0026] 13… Gears

[0027] 14…Drive device

[0028] 141…drive shaft

[0029] 15… Gear Disc

[0030] 100… chain

[0031] 20… Adjustable seat

[0032] 21… Adjusting the pivot

[0033] 22… Adjusting screw hole

[0034] 23… Locking strip hole

[0035] 24… Seat

[0036] 30… Supporting ornaments

[0037] 31…Central Ministry

[0038] 32… (The rest of the text is incomplete and cannot be translated.)

[0039] 33… Pivot section

[0040] 34… Limiting strip hole

[0041] 40…roller

[0042] 41…bearing

[0043] 42…Stop ring side

[0044] 50…elastic element

[0045] 51…First elastic section

[0046] 52…Second elastic part

[0047] 60…Limit pin

[0048] 61…Limiting section

[0049] 70…sensors

[0050] 71…Sensing Unit

[0051] 80… Adjusting screw

[0052] 81…end

[0053] 82…Threaded section

[0054] 90…locking firmware

[0055] 91…body

[0056] 92…head Detailed Implementation

[0057] See Figures 1 to 5As shown, this embodiment of the utility model provides a chain tension adjustment device, suitable for installation on a machine base 11 and for a chain 100. Figure 1 The display shows a partial view of the machine tool 11. A motor 12 is located at the center of the machine tool 11. The motor 12 has a motor shaft 121 and a gear 13 on the motor shaft 121. A support part 111 is located below the center of the machine tool 11. A driving device 14 is located on each side of the machine tool 11. Each driving device 14 has a driving shaft 141 and a gear 15 on the driving shaft 141. A chain 100 is wound between the two gear 15 and the gear 13, and the chain 100 provides tension.

[0058] The chain tension adjustment device mainly consists of an adjustment seat 20, a support swing element 30, a rolling element 40, an elastic element 50, a limit pin 60, a sensor 70, an adjustment screw 80, and a locking element 90, wherein:

[0059] The adjustment seat 20 is adjustablely mounted on the machine base 11 and has an adjustment pivot 21 pivotally mounted on the machine base 11, an adjustment screw hole 22 away from the adjustment pivot 21, a locking strip hole 23 located above the adjustment screw hole 22, and a seat 24 located between the adjustment pivot 21 and the adjustment screw hole 22.

[0060] The support member 30 has a pivot portion 31 pivotally mounted on the adjustment seat 20, a rest portion 32 away from the pivot portion 31, a pivot portion 33 located below the rest portion 32 and facing the seat portion 24, and a limiting strip hole 34 located between the pivot portion 31 and the rest portion 32, the limiting strip hole 34 being arc-shaped.

[0061] The rolling element 40 is pivotally mounted on the abutting portion 32 and is abutted by the chain 100 to bear the tension provided by the chain 100 and transmit the tension to the supporting swing member 30. In this embodiment, a bearing 41 is provided between the rolling element 40 and the abutting portion 32 of the supporting swing member 30, and each side of the rolling element 40 has a stop ring side portion 42 to prevent the chain 100 from disengaging.

[0062] The elastic element 50 has a first elastic portion 51 disposed on the seat portion 24, a second elastic portion 52 opposite to the first elastic portion 51 and disposed on the pivot portion 33, and an elastic force acting on the support pivot 30. The elastic force is used to compensate for the tension of the chain 100. In this embodiment, the elastic element 50 is a compression spring, but it is not limited thereto. In addition, the elastic force of the elastic element 50 can be calculated and matched with the tension of the chain 100 so that the tension of the chain 100 is within a set range.

[0063] The limiting pin 60 passes through the adjusting seat 20 and has a limiting part 61 located in the limiting strip hole 34, thereby limiting the angle at which the supporting swing member 30 can pivot around the pivot part 31.

[0064] The sensor 70 is provided on the seat 24 of the adjustment seat 20 and has a sensing part 71 that should support the pivot part 33 of the swing member 30. The sensing part 71 has a sensing distance, and when the pivot part 33 is within the sensing distance, it outputs a sensing signal.

[0065] The adjusting screw 80 is adjustable and screwed into the adjusting seat 20. It has an end 81 that abuts against the support portion 111 of the machine base 11 and a threaded portion 82 that is screwed into the adjusting screw hole 22 of the adjusting seat 20. By adjusting and rotating the adjusting screw 80, the distance between the adjusting screw hole 22 of the adjusting seat 20 and the support portion 111 of the machine base 11 is changed, so that the adjusting seat 20 can pivot at an angle with the adjusting pivot portion 21 as the center.

[0066] The fastener 90 is locked to the machine base 11 and has a locking strip hole 23 that passes through the adjusting seat 20 and is locked to the body 91 of the machine base 11, and a head 92 for pressing or releasing the adjusting seat 20. By loosening the fastener 90, the head 92 no longer presses against the adjusting seat 20, allowing the adjusting seat 20 to pivot at an angle with the adjusting pivot 21 as the center; by tightening the fastener 90, the head 92 presses the adjusting seat 20 against and fixes it to the machine base 11, making it impossible to adjust.

[0067] The above describes the configuration of the main components of this utility model embodiment. The operation and function of this utility model are explained below.

[0068] See Figure 5 As shown, the design of the support member 30 in conjunction with the elastic member 50 allows the support member 30 to not only bear the downward tension of the chain 100, but also be supported by the upward elastic force of the elastic member 50. By having the tension of the chain 100 and the elastic force of the elastic member 50 act on the support member 30 simultaneously, the elastic force of the elastic member 50 can compensate for the tension of the chain 100, thereby automatically adjusting the tension of the chain 100 and keeping the tension of the chain 100 automatically within a set range.

[0069] Specifically, when the chain 100 becomes loose, causing the chain tension to decrease, the downward tension acting on the support sway 30 becomes relatively smaller. At this time, the elastic force of the elastic element 50 is released upward, causing the support sway 30 to pivot upward in a clockwise direction, thereby driving the rolling element 40 to move upward synchronously. The upwardly moving rolling element 40 pushes against the chain 100, causing the chain 100 to restore tension in order to maintain the balance of forces. The chain 100 changes from loose to tight and maintains the originally set tension.

[0070] When the chain 100 tightens, causing the tension of the chain 100 to increase, the tension acting downward on the support swing member 30 increases relatively. At this time, the elastic force of the elastic member 50 is compressed downward, causing the support swing member 30 to pivot downward in a counterclockwise direction, thereby driving the rolling member 40 to move downward synchronously. The downward movement of the rolling member 40 causes the chain 100 to return to the tension state before it tightened, so that the chain 100 changes from tight to loose and maintains the original set tension.

[0071] It is worth mentioning that, see Figure 5 and Figure 6 As shown, since the present invention specifically provides a sensor 70 on the adjustment seat 20, and the sensor 70 has a sensing part 71 corresponding to the pivot part 33 of the supporting swing member 30, and the sensing part 71 has a sensing distance, for example 30mm, when the chain 100 becomes too tight and causes the tension of the chain 100 to be too large, the chain 100 indirectly presses excessively against the supporting swing member 30, causing the supporting swing member 30 to pivot downward too much. Once the pivot part 33 of the supporting swing member 30 is within the sensing distance, a sensing signal is output, thereby notifying the control center, related equipment, or personnel that the chain has malfunctioned so that corresponding processing can be carried out.

[0072] It is worth noting that, see reference Figure 7 As shown, this utility model allows control of the tension of the chain 100 by adjusting the pivot angle of the adjusting seat 20. Specifically, the adjustment method involves first loosening the locking fastener 90, then rotating the adjusting screw 80 clockwise or counterclockwise, causing the adjusting seat 20 to pivot upwards or downwards around the adjusting pivot 21. The locking fastener 90 is then tightened to position the adjusting seat 20 after adjustment. When the adjusting seat 20 pivots clockwise, it simultaneously drives the components on it to move upwards, causing the rolling element 40 to further press against the chain 100, increasing the tension of the chain 100. Similarly, when the adjusting seat 20 pivots counterclockwise, the tension of the chain 100 decreases.

Claims

1. A chain tension adjusting device, suitable for use on a chain, the chain providing tension, characterized in that, The chain tension adjusting device comprises: an adjusting seat having a seat portion; a supporting swing piece having a pivot portion pivotally arranged on the adjusting seat, a leaning portion away from the pivot portion, and a pivot swing portion towards the seat portion; a rolling piece pivotally arranged on the leaning portion and leaning against the chain to bear the tension and transmit the tension to the supporting swing piece; and a resilient piece having a first resilient portion arranged on the seat portion, a second resilient portion arranged on the pivot swing portion and opposite to the first resilient portion, and a resilient force acting on the supporting swing piece to compensate the tension of the chain.

2. The chain tension adjustment device of claim 1, wherein The chain tension adjusting device further comprises a sensor arranged on the seat portion of the adjusting seat and having a sensing portion corresponding to the pivot swing portion, the sensing portion having a sensing distance, and when the pivot swing portion is within the sensing distance, a sensing signal is outputted.

3. The chain tension adjustment device of claim 1, wherein The supporting swing piece further has a limiting strip hole between the pivot portion and the leaning portion, and the chain tension adjusting device further comprises a limiting pin arranged on the adjusting seat and having a limiting portion located in the limiting strip hole.

4. The chain tension adjustment device of claim 3, wherein The limiting strip hole of the supporting swing piece is arc-shaped.

5. The chain tension adjustment device of claim 1, wherein The chain tension adjusting device is arranged on a machine table having a bearing portion, and further comprises an adjusting screw and a locking piece, the adjusting seat is adjustably arranged on the machine table and further has an adjusting pivot portion pivotally arranged on the machine table, an adjusting screw hole away from the adjusting pivot portion, and a locking strip hole, the adjusting screw is adjustably screwed on the adjusting seat and has an end portion leaning against the bearing portion and a threaded portion screwed in the adjusting screw hole, and the locking piece is locked on the machine table and has a body portion penetrating through the locking strip hole and a head portion pressing or releasing the adjusting seat.

6. The chain tension adjustment device of claim 5, wherein, The adjusting screw further has a driving portion opposite to the end portion.

7. A chain tension adjusting device, suitable for use on a chain, the chain providing tension, characterized in that, The chain tension adjusting device comprises: an adjusting seat having a seat portion; a supporting swing piece having a pivot portion pivotally arranged on the adjusting seat, a leaning portion away from the pivot portion and leaning against the chain to bear the tension, and a pivot swing portion towards the seat portion; and a resilient piece having a first resilient portion arranged on the seat portion, a second resilient portion arranged on the pivot swing portion and opposite to the first resilient portion, and a resilient force acting on the supporting swing piece to compensate the tension of the chain.

8. The chain tension adjustment device of claim 7, wherein, The chain tension adjusting device further comprises a sensor arranged on the seat portion of the adjusting seat and having a sensing portion corresponding to the pivot swing portion, the sensing portion having a sensing distance, and when the pivot swing portion is within the sensing distance, a sensing signal is outputted.

9. The chain tension adjustment device of claim 7, wherein, The supporting swing piece further has a limiting strip hole between the pivot portion and the leaning portion, and the chain tension adjusting device further comprises a limiting pin arranged on the adjusting seat and having a limiting portion located in the limiting strip hole. The limiting strip hole of the supporting swing piece is arc-shaped.

10. The chain tension adjustment device of claim 7, wherein, The chain tension adjusting device is suitable for a machine table with a supporting part. The chain tension adjusting device further has an adjusting screw and a locking member. The adjusting seat is adjustably arranged on the machine table and further has an adjusting pivot arranged on the machine table, an adjusting screw hole away from the adjusting pivot, and a locking strip hole. The adjusting screw is adjustably screwed on the adjusting seat and has an end part abutting against the supporting part and a threaded part screwed in the adjusting screw hole. The locking member is locked on the machine table and has a body part passing through the locking strip hole and a head part pressing or releasing the adjusting seat.

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