Double-row chain transmission mechanism

Abstract

The utility model relates to the technical field of box sticking machines, in particular to a double-row chain transmission mechanism which comprises a driving chain wheel and an adjusting mechanism. Two driven chain wheels are arranged above the driving chain wheel, a middle transmission chain wheel and a tensioning chain wheel are arranged on the same side of the driving chain wheel, and the driving chain wheel, the driven chain wheels, the middle transmission chain wheel and the tensioning chain wheel are sleeved with double rows of chains in a meshed mode. The adjusting mechanism comprises a fixing frame, a rotating shaft rotationally connected to the fixing frame, a connecting shaft coaxially arranged on the tensioning chain wheel, a mounting frame allowing the connecting shaft to be rotationally arranged, a bearing arranged on the mounting frame, two protruding blocks arranged on the mounting frame and guide rods arranged on the protruding blocks, and a threaded part is arranged on the rotating shaft; the threaded part is in threaded connection with the fixing frame, and one end of the rotating shaft is inserted into an inner ring of the bearing. According to the transmission mechanism, the transmission gear can be fixedly installed conveniently, the tension degree of the chain can be adjusted, and the overall strength and stability of the transmission mechanism are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of box gluers, in particular to a double-row chain transmission mechanism. Background Art

[0002] A chain drive mechanism uses a chain to transfer the motion and power of a driving sprocket with a special tooth profile to a driven sprocket with a special tooth profile. In the production and processing of a box gluer, the chain drive mechanism plays a vital role, primarily transferring power from one component to another to achieve the various functions of the box gluer.

[0003] Chinese patent publication number CN207349377U discloses a chain and sprocket transmission mechanism, comprising a first sprocket mounted on a first support shaft, a second sprocket mounted on a second support shaft, a third sprocket and a fourth sprocket both fixed to the outer ring of a third bearing, the inner ring of the third bearing fixed to the third support shaft, a fifth sprocket and a seventh sprocket both fixed to the outer ring of a fourth bearing, the inner ring of the fourth bearing fixed to the fourth support shaft, a sixth sprocket fixed to the outer ring of a first one-way bearing, the inner ring of the first one-way bearing fixed to the wheel axle, an eighth sprocket fixed to the outer ring of a second one-way bearing, the inner ring of the second one-way bearing fixed to the wheel axle, a first chain ring mounted on the first, second, and third sprockets, a second chain ring mounted on the fourth, fifth, and sixth sprockets, and a third chain ring mounted on the seventh and eighth sprockets. Regardless of whether the first chain rotates clockwise or counterclockwise, it will drive the wheels in the same direction.

[0004] However, the above technical solution has the following shortcomings: the intermediate transmission sprocket in the transmission mechanism still adopts the traditional keyway installation method for transmission, which is not only inflexible, but also troublesome to disassemble and prone to damage. In addition, the tightness of the chain in this transmission method is not easy to adjust. When the chain is too loose, the chain is prone to jumping, decoupling or wearing with the sprocket, affecting the transmission efficiency of the device. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and propose a double-row chain transmission mechanism, which not only facilitates the fixed installation of the transmission gear, but also can adjust the tension of the chain, thereby improving the overall strength and stability of the transmission mechanism.

[0006] The technical solution of the utility model is a double-row chain transmission mechanism, comprising a driving sprocket and an adjusting mechanism; two driven sprockets are arranged above the driving sprocket, an intermediate transmission sprocket and a tensioning sprocket are arranged on the same side of the driving sprocket, and a double-row chain is meshed on the driving sprocket, the driven sprocket, the intermediate transmission sprocket and the tensioning sprocket; the adjusting mechanism comprises a fixing frame, a rotating shaft rotatably connected to the fixing frame, a connecting shaft coaxially arranged on the tensioning sprocket, a mounting frame for the connecting shaft to be rotatably arranged, a bearing arranged on the mounting frame, two protrusions arranged on the mounting frame, and a guide rod arranged on the protrusion, a threaded portion is provided on the rotating shaft, the threaded portion is threadedly connected to the fixing frame, one end of the rotating shaft is plugged into the inner ring of the bearing, and the guide rod passes through the fixing frame and is slidably arranged.

[0007] Preferably, a main shaft passes through and is fixedly connected to the driving sprocket.

[0008] Preferably, the driving sprocket, the driven sprocket, the intermediate transmission sprocket and the tensioning sprocket each have two coaxially arranged first and second sprocket discs, and the first and second sprocket discs are both engaged with the double-row chain.

[0009] Preferably, the axial positions of the driving sprocket, the driven sprocket and the intermediate transmission sprocket are all fixed, and the tensioning sprocket can move laterally.

[0010] Preferably, a expansion sleeve is coaxially arranged on the intermediate transmission sprocket, and six fixing bolts distributed in an annular array are threadedly connected to the expansion sleeve.

[0011] Preferably, a knob is coaxially provided at one end of the rotating shaft away from the bearing.

[0012] Preferably, a mounting plate is provided on the fixing frame, and the mounting plate is provided with four through holes distributed in a rectangular array.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] 1. The utility model can improve the strength of the transmission structure by simultaneously engaging the first sprocket plate and the second sprocket plate with the double-row chain. Compared with the single-row chain, it has a longer service life, and the transmission gear is fixedly installed with the expansion sleeve and the fixing bolt. Compared with the traditional keyway installation method, it is more flexible, easy to disassemble, and not easy to damage.

[0015] 2. The utility model can quickly adjust the lateral position of the tensioning sprocket through the adjustment mechanism to adjust the extrusion force on the double-row chain, thereby achieving the control of the tension of the double-row chain, avoiding the chain being too loose or too tight, affecting the transmission effect, and even causing the chain to slip, break and other faults. The operation is simple and convenient, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 It is a structural diagram of a double-row chain;

[0018] Figure 3 It is a structural diagram of the intermediate transmission sprocket;

[0019] Figure 4 Schematic diagram of the connection between the adjusting mechanism and the tensioning sprocket.

[0020] Figure numerals: 1, main shaft; 2, driving sprocket; 3, first sprocket plate; 4, second sprocket plate; 5, driven sprocket; 6, intermediate transmission sprocket; 7, tensioning sprocket; 8, double-row chain; 9, expansion sleeve; 10, fixing bolt; 11, connecting shaft; 12, fixing frame; 13, rotating shaft; 14, threaded portion; 15, mounting frame; 16, bearing; 17, bump; 18, guide rod; 19, knob; 20, mounting plate. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figures 1-4 As shown, a double-row chain transmission mechanism proposed in this embodiment includes a driving sprocket 2 and an adjusting mechanism; two driven sprockets 5 are arranged above the driving sprocket 2, and an intermediate transmission sprocket 6 and a tensioning sprocket 7 are arranged on the same side of the driving sprocket 2. A double-row chain 8 is meshed on the driving sprocket 2, the driven sprocket 5, the intermediate transmission sprocket 6 and the tensioning sprocket 7. A main shaft 1 passes through and is fixedly connected to the driving sprocket 2. The driving sprocket 2, the driven sprocket 5, the intermediate transmission sprocket 6 and the tensioning sprocket 7 are each provided with two coaxially arranged first sprocket discs 3 and second sprocket discs 4, and the first sprocket disc 3 and the second sprocket disc 4 are both meshed and connected with the double-row chain 8.

[0023] It is connected to the driving device through the main shaft 1, thereby driving the driving sprocket 2 to rotate, and the driven sprocket 5, the intermediate transmission sprocket 6 and the tensioning sprocket 7 are driven by the double-row chain 8 to engage and transmit, so as to drive the various functions of the gluer to operate stably. The arrangement of the first sprocket disc 3, the second sprocket disc 4 and the double-row chain 8 can improve the strength of the transmission structure and has a longer service life than that of a single-row chain.

[0024] The axial positions of the driving sprocket 2, the driven sprocket 5 and the intermediate transmission sprocket 6 are all fixed, and the tensioning sprocket 7 can be moved laterally. The lateral position of the tensioning sprocket 7 is adjusted by the adjusting mechanism to adjust the extrusion force on the double-row chain 8, thereby achieving the control effect of the tension of the double-row chain 8 to avoid the chain being too loose or too tight, affecting the transmission effect, and even causing chain slippage, breakage and other faults.

[0025] like Figure 1 and Figure 4 As shown, the adjustment mechanism includes a fixed frame 12, a rotating shaft 13 rotatably connected to the fixed frame 12, a connecting shaft 11 coaxially arranged on the tensioning sprocket 7, a mounting frame 15 for the connecting shaft 11 to be rotatably arranged, a bearing 16 arranged on the mounting frame 15, two protrusions 17 arranged on the mounting frame 15, and a guide rod 18 arranged on the protrusion 17. A threaded portion 14 is provided on the rotating shaft 13, and the threaded portion 14 is threadedly connected to the fixed frame 12. One end of the rotating shaft 13 is plugged into the inner ring of the bearing 16. The guide rod 18 passes through the fixed frame 12 and is slidably arranged. A knob 19 is coaxially provided on the end of the rotating shaft 13 away from the bearing 16.

[0026] When the position of the tensioning sprocket 7 needs to be adjusted, the rotating shaft 13 is rotated by the knob 19, and the threaded portion 14 of the rotating shaft 13 is screwed into the fixing frame 12. At the same time, one end of the rotating shaft 13 connected to the inner ring of the bearing 16 drives the inner ring to rotate, and under the guidance of the guide rod 18, the rotating shaft 13 will push the mounting frame 15 to move along the axial direction, thereby realizing the control of the tension of the double-row chain 8. The operation is simple and convenient, and has good practicality.

[0027] Example 2

[0028] like Figure 3 and Figure 4 As shown, a double-row chain transmission mechanism proposed in this embodiment, compared with the first embodiment, in this embodiment, a tightening sleeve 9 is coaxially arranged on the intermediate transmission sprocket 6, and six fixing bolts 10 distributed in a ring array are threadedly connected to the tightening sleeve 9, and a mounting plate 20 is provided on the fixing frame 12, and the mounting plate 20 is provided with four through holes distributed in a rectangular array.

[0029] In this embodiment, the intermediate drive sprocket 6 is secured by a locking sleeve 9 and fixing bolts 10. Compared to traditional keyway mounting, this method is more flexible, easier to disassemble, and less prone to damage, improving the convenience of installing and disassembling the transmission structure. The mounting plate 20 and the through-holes are used to securely mount the adjustment mechanism to the equipment support frame.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A double-row chain transmission mechanism, characterized in that: include: A driving sprocket (2) is provided with two driven sprockets (5) above it, an intermediate transmission sprocket (6) and a tensioning sprocket (7) are provided on the same side of the driving sprocket (2), and a double-row chain (8) is meshedly mounted on the driving sprocket (2), the driven sprocket (5), the intermediate transmission sprocket (6) and the tensioning sprocket (7); The adjusting mechanism comprises a fixing frame (12), a rotating shaft (13) rotatably connected to the fixing frame (12), a connecting shaft (11) coaxially arranged on a tensioning sprocket (7), a mounting frame (15) for the connecting shaft (11) to be rotatably arranged, a bearing (16) arranged on the mounting frame (15), two protrusions (17) arranged on the mounting frame (15), and a guide rod (18) arranged on the protrusion (17); a threaded portion (14) is provided on the rotating shaft (13), the threaded portion (14) is threadedly connected to the fixing frame (12), one end of the rotating shaft (13) is plugged into the inner ring of the bearing (16), and the guide rod (18) passes through the fixing frame (12) and is slidably arranged.

2. A double-row chain transmission mechanism according to claim 1, characterized in that: A main shaft (1) passes through and is fixedly connected to the driving sprocket (2).

3. The double-row chain transmission mechanism according to claim 1, characterized in that: The driving sprocket (2), the driven sprocket (5), the intermediate transmission sprocket (6) and the tensioning sprocket (7) are each provided with a first sprocket disc (3) and a second sprocket disc (4) which are coaxially arranged. The first sprocket disc (3) and the second sprocket disc (4) are both meshed and connected with a double-row chain (8).

4. The double-row chain transmission mechanism according to claim 1, characterized in that: The axial positions of the driving sprocket (2), the driven sprocket (5) and the intermediate transmission sprocket (6) are all fixed, and the tensioning sprocket (7) can move laterally.

5. The double-row chain transmission mechanism according to claim 1, characterized in that: A tightening sleeve (9) is coaxially arranged on the intermediate transmission sprocket (6), and six fixing bolts (10) distributed in an annular array are threadedly connected to the tightening sleeve (9).

6. The double-row chain transmission mechanism according to claim 1, characterized in that: A knob (19) is coaxially arranged on one end of the rotating shaft (13) away from the bearing (16).

7. The double-row chain transmission mechanism according to claim 1, characterized in that: A mounting plate (20) is provided on the fixing frame (12), and the mounting plate (20) is provided with four through holes distributed in a rectangular array.

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