Synchronous belt tensioning device of bottle blowing machine and control method

Abstract

The invention discloses a synchronous belt tensioning device of a bottle blowing machine and a control method, and belongs to the technical field of bottle blowing machines. Comprising a base support, a guide rail table, a guide rail sliding block, a tensioning wheel assembly and a stretching air cylinder assembly, the guide rail table is detachably and fixedly installed on the top of the base support, and a rail groove is formed in the top of the guide rail table; the guide rail sliding block is arranged in the rail groove in a sliding fit mode. The tensioning wheel assembly is fixedly installed on the top of the guide rail sliding block. The telescopic end of the stretching air cylinder assembly is fixedly connected to one end of the guide rail sliding block, and the stretching air cylinder assembly is used for driving the guide rail sliding block to slide in the rail groove. The telescopic end of the stretching air cylinder assembly drives the guide rail sliding block to slide back and forth in the rail groove, and the guide rail sliding block drives the tensioning wheel assembly to synchronously move back and forth in the rail groove, so that the tensioning wheel assembly can quickly loosen and replace a synchronous belt without disassembling the tensioning wheel assembly, and time and manpower are greatly saved.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing machines, and in particular to a synchronous belt tensioning device and a control method of a bottle blowing machine. Background Art

[0002] Rotary blow molding machine is a kind of equipment that makes plastic particles into hollow containers through the blow molding process. The more common models include hollow extrusion blow molding machines that use PP and PE for one-time molding, injection stretch blow molding machines that use PET, PC or PP for two-time molding, and the newly developed multi-layer hollow extrusion blow molding and stretch blow molding. Most of the blow molding machines are still two-step blow molding machines, that is, the plastic raw materials must first be made into bottle blanks, and then blown.

[0003] The main drive of the bottle blowing machine mainly adopts the mode of slewing support and synchronous belt drive. The slewing support is gear driven to meet the high-precision synchronization requirements (high-speed rotation center). The others are synchronous belt driven, with low noise and no lubrication required. A tensioning pulley device is placed in the middle of the synchronous belt to tighten the synchronous belt during installation. The synchronous belt drive system of the bottle blowing machine is installed under the operating table. There is a protective door that is safely closed during normal production. If the synchronous belt is stretched during production, it is difficult to find, and the shutdown adjustment will delay production. The existing tensioning device uses a spring as the tensioning power. After a period of use, the spring will become loose, the tensioning force will become smaller, and the tensioning force of the spring is often not very stable. If the pulley is loose, it may cause major impacts and consequences. Therefore, it is necessary to check the tension regularly to maintain the operation of the equipment. Secondly, when replacing the synchronous belt, it is necessary to remove the screws and nuts and loosen the tensioning device, which increases time and labor costs. Summary of the invention

[0004] The object of the present invention is to provide a synchronous belt tensioning device and a control method for a bottle blowing machine, aiming to solve at least one of the technical problems existing in the above-mentioned prior art.

[0005] To achieve the above purpose, the technical solutions adopted by the present invention are as follows:

[0006] A synchronous belt tensioning device for a bottle blowing machine, comprising:

[0007] Base bracket;

[0008] A guide rail platform, the guide rail platform is detachably fixedly mounted on the top of the base bracket, and a track groove is provided on the top of the guide rail platform;

[0009] A guide rail slider, the guide rail slider is slidably arranged in the track groove;

[0010] A tension wheel assembly, the tension wheel assembly is fixedly mounted on the top of the guide rail slider;

[0011] A stretching cylinder assembly, the telescopic end of which is fixedly connected to one end of the guide rail slider, and the stretching cylinder assembly is used to drive the guide rail slider to slide in the track groove.

[0012] As a further solution of the present invention: the stretching cylinder assembly includes a fixed plate, a cylinder body and a cylinder top cap, the fixed plate is detachably mounted on the top end of the base bracket away from the guide rail platform, the cylinder top cap is fixedly arranged on the end of the guide rail slider close to the fixed plate, the cylinder body is fixedly arranged on the fixed plate, and the stretching rod of the cylinder body passes through the fixed plate and is fixedly connected to the cylinder top cap.

[0013] As a further solution of the present invention: the guide rail platform includes a bottom plate and a limiting side plate, the bottom plate is detachably fixedly mounted on the top of the base bracket on a side away from the stretching cylinder assembly, the top of the bottom plate is integrally connected to two relatively arranged limiting side plates, and the track groove is formed between the two limiting side plates and the bottom plate.

[0014] As a further solution of the present invention: locking pieces are provided on the two limiting side plates, and the locking pieces are used to fix the guide rail slider in the track groove.

[0015] As a further solution of the present invention: the locking member is a locking bolt, and at least two of the locking bolts are evenly arranged on the outer side surface of the limiting side plate.

[0016] As a further solution of the present invention: an anti-derail assembly is also provided on the top of the two limiting side plates, and the anti-derail assembly is used to prevent the guide rail slider from breaking away from the track groove in the vertical direction.

[0017] As a further solution of the present invention: the anti-derail assembly includes a track pressure plate and clamping bolts, one side of the track pressure plate is detachably fixedly installed on the top of the corresponding limiting side plate by a plurality of the clamping bolts, and the bottom of the other side of the track pressure plate is attached to the top of the guide rail slider.

[0018] As a further solution of the present invention: the tensioning wheel assembly includes a tensioning shaft, a tensioning wheel body, a sleeve and a bearing, the bottom end of the tensioning shaft is fixedly arranged on the top of the guide rail slider, the sleeve is fixedly sleeved on the upper section of the tensioning shaft, one bearing is respectively sleeved on both ends of the sleeve, and the tensioning wheel body is rotatably sleeved on the outer periphery of the sleeve through two bearings.

[0019] As a further solution of the present invention: a cover plate is arranged on the top of the tensioning shaft, and the cover plate is fixed to the top of the tensioning shaft by fixing bolts.

[0020] The present invention also provides a control method for a synchronous belt tensioning device of a bottle blowing machine, comprising the following steps:

[0021] The synchronous belt tensioning device is integrally fixedly installed on the machine platform of the bottle blowing machine through the base bracket;

[0022] The controller controls the stretching cylinder assembly to work. When the stretching cylinder assembly drives the guide rail slider to move in the track groove in a direction away from the stretching cylinder assembly, the tensioning wheel assembly performs a synchronous belt tensioning operation.

[0023] When the stretching cylinder assembly drives the guide rail slider to retract in the track groove toward the stretching cylinder assembly, the tensioning wheel assembly can move and the synchronous belt is loosened.

[0024] Beneficial effects of the present invention:

[0025] (1) The synchronous belt tensioning device of the bottle blowing machine of the present invention is provided with a base bracket, a guide rail platform, a guide rail slider, a tension wheel assembly and a stretching cylinder assembly. The guide rail slider is driven to slide forward and backward in the track groove by the telescopic end of the stretching cylinder assembly, and the guide rail slider drives the tension wheel assembly to move forward and backward synchronously in the track groove, so that the tension wheel assembly can quickly loosen and tighten the synchronous belt without disassembling the tension wheel assembly, which greatly saves time and manpower;

[0026] (2) The tensioning operation is controlled by adopting a cylinder tensioning design structure. The cylinder tensioning control is sensitive and has high stability. The tensioning wheel is not easy to loosen and can be used stably and sustainably, which reduces the period of regular tension inspection and reduces the probability of product risks.

[0027] (3) The tension wheel assembly is installed on the guide rail slider, and the guide rail slider moves forward and backward along the track groove. The stretching rod of the cylinder body can adjust the stroke of the guide rail slider to fix the tensioning synchronous belt. The stretching stroke of the cylinder body can meet different tensioning strengths and has a wide adjustable range;

[0028] (4) Contract the stretching rod of the cylinder body, the tension wheel body can move, and the synchronous belt is loosened without disassembly. At this time, the synchronous belt can be directly replaced, which greatly saves time and manpower;

[0029] (5) The tension wheel body moves in the track groove and can be taken out directly by loosening the fixing bolts for quick replacement, making the tension wheel assembly easy to dismantle and replace without having to be completely dismantled. It occupies a small space and has a flexible installation position, making it easy to replace spare parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Figure 1 It is a schematic structural diagram of a synchronous belt tensioning device of a bottle blowing machine from a first perspective of the present invention;

[0032] Figure 2 It is a schematic structural diagram of a synchronous belt tensioning device of a bottle blowing machine from a second viewing angle of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the tension wheel assembly of the present invention;

[0034] Figure 4 The invention discloses a cross-sectional schematic diagram of the structure of a synchronous belt tensioning device of a bottle blowing machine.

[0035] In the figure: 1. base bracket; 2. guide rail platform; 21. track groove; 22. bottom plate; 23. limit side plate; 3. guide rail slider; 4. tensioning wheel assembly; 41. tensioning shaft; 42. tensioning wheel body; 43. bushing; 44. bearing; 45. cover plate; 46. fixing bolt; 5. stretching cylinder assembly; 51. fixing plate; 52. cylinder body; 53. cylinder top cap; 6. locking bolt; 7. anti-derail assembly; 71. track pressure plate; 72. clamping bolt. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that terms such as "up", "down", "left", "right", "front" and "back" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying 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 direction, and a specific direction structure and operation. Therefore, they should not be understood as limitations on the present invention.

[0038] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1-4 As shown, the first embodiment of the present invention provides a synchronous belt tensioning device for a bottle blowing machine, comprising a base bracket 1, a guide rail platform 2, a guide rail slider 3, a tensioning wheel assembly 4 and a stretching cylinder assembly 5.

[0040] Among them, see Figure 1 As shown, the base bracket 1 is an I-shaped structure, and the bottom flat plate is used to be fixed on the main machine of the bottle blowing machine. The guide rail platform 2 is detachably fixedly installed on the top of the base bracket 1. A track groove 21 is opened on the top of the guide rail platform 2. The guide rail slider 3 is slidably and fitly arranged in the track groove 21. The tensioning wheel assembly 4 is fixedly installed on the top of the guide rail slider 3. The tensioning wheel assembly 4 follows the guide rail slider 3 and slides synchronously in the track groove 21. The telescopic end of the stretching cylinder assembly 5 is fixedly connected to one end of the guide rail slider 3. The telescopic end of the stretching cylinder assembly 5 drives the guide rail slider 3 to slide back and forth in the track groove 21. The guide rail slider 3 drives the tensioning wheel assembly 4 to move back and forth in the track groove 21 synchronously. The tensioning wheel assembly 4 can quickly loosen or tighten the synchronous belt without disassembling the tensioning wheel assembly 4, which greatly saves time and manpower.

[0041] See also Figure 2 As shown, in this embodiment, the stretching cylinder assembly 5 includes a fixing plate 51, a cylinder body 52 and a cylinder top cap 53. The fixing plate 51 is detachably mounted on both sides of the base bracket 1 at one end away from the guide rail platform 2 by bolts, and the cylinder top cap 53 is fixedly arranged at one end of the guide rail slider 3 close to the fixing plate 51, and the fixing plate 51 and the cylinder top cap 53 are located on the same horizontal line. The cylinder body 52 is fixedly arranged on the fixing plate 51, and the stretching rod of the cylinder body 52 passes through the fixing plate 51 and is fixedly connected to the cylinder top cap 53.

[0042] During operation, the stretching rod of the cylinder body 52 pushes the guide rail slider 3 forward to the left in the track groove 21 through the cylinder top cap 53, so that the tensioning wheel assembly 4 performs tensioning operation. Conversely, the stretching rod of the cylinder body 52 drives the guide rail slider 3 forward backward in the track groove 21 through the cylinder top cap 53, and the tensioning wheel assembly 4 can be moved, and the synchronous belt is loosened. The synchronous belt can be directly replaced without disassembling the tensioning wheel assembly 4. In addition, the stretching rod of the cylinder body 52 can adjust the stroke of the guide rail slider 3 to fix the tensioned synchronous belt. Its stretching stroke can meet different tensioning strengths and has a large adjustable range.

[0043] See also Figure 1As shown, in this embodiment, the guide rail platform 2 includes a bottom plate 22 and a limiting side plate 23. The bottom plate 22 is detachably fixedly mounted on the top of the base bracket 1 on a side away from the stretching cylinder assembly 5. Specifically, the four corners of the bottom plate 22 are fixed to the base bracket 1 by bolts. It should be noted that the bolts at the four corners of the bottom plate 22 are partially located in the track groove 21. The bolts at the four corners of the bottom plate 22 limit the guide rail slider 3 sliding forward and backward to prevent the guide rail slider 3 from leaving the track groove 21. Two limiting side plates 23 arranged opposite to each other are integrally connected to the top of the bottom plate 22. The track groove 21 is formed between the two limiting side plates 23 and the bottom plate 22. The two sides of the guide rail slider 3 are respectively slidably fitted with the inner side walls of the two limiting side plates 23. Through the constraints of the two limiting side plates 23, the guide rail slider 3 can move forward and backward in the track groove 21 more stably, and no shaking in other directions will occur during the forward and backward movement. In short, the bolts at the four corners of the bottom plate 22 and the constraints of the two limiting side plates 23 ensure that the guide rail slider 3 will not separate from the track groove 21 in the horizontal direction.

[0044] For further information, see Figure 1 As shown, in this embodiment, locking members are provided on both limiting side plates 23, and the locking members are used to fix the guide rail slider 3 in the track groove 21. The locking members can be locking bolts 6, and at least two locking bolts 6 are evenly provided on the outer side of each limiting side plate 23. After the guide rail slider 3 moves to a suitable position, the locking bolts 6 on each limiting side plate 23 are tightened so that the locking bolts 6 are pressed against both sides of the guide rail slider 3, thereby fixing the guide rail slider 3 in a suitable position in the track groove 21 to increase stability.

[0045] See also Figure 1 As shown, in the present embodiment, two limit side plates 23 tops are also provided with anti-derail assembly 7, and anti-derail assembly 7 is used to prevent the guide rail slider 3 from breaking away from track groove 21 in the vertical direction. Anti-derail assembly 7 can specifically include track pressing plate 71 and clamping bolt 72. Track pressing plate 71 one side is detachably fixedly installed on the corresponding limit side plate 23 top by some clamping bolts 72, and track pressing plate 71 other side bottom is fitted on the guide rail slider 3 top. Two track pressing plates 71 are fitted on the relative two sides of the guide rail slider 3 top, thereby ensuring that the guide rail slider 3 will not break away from track groove 21 in the vertical direction during operation, and the anti-derail protection of the guide rail slider 3 is realized in all directions.

[0046] See also Figure 2 and Figure 3As shown, in this embodiment, the tensioning wheel assembly 4 includes a tensioning shaft 41, a tensioning wheel body 42, a sleeve 43, a bearing 44, a cover plate 45 and a fixing bolt 46. Among them, the bottom end of the tensioning shaft 41 can be fixedly set on the top of the guide rail slider 3 by welding, the sleeve 43 is fixedly sleeved on the upper section of the tensioning shaft 41, and a bearing 44 is sleeved on both ends of the sleeve 43. The tensioning wheel body 42 is rotatably sleeved on the outer periphery of the sleeve 43 through two bearings 44, and the synchronous belt is wound around the outer periphery of the tensioning wheel body 42. The tensioning degree of the synchronous belt can be adjusted by adjusting the position of the tensioning wheel body 42. A cover plate 45 is set on the top of the tensioning shaft 41, and the cover plate 45 is fixed to the top of the tensioning shaft 41 by fixing bolts 46. By contracting the stretching rod of the cylinder body 52, the tensioning wheel body 42 can be movable, and the synchronous belt is loosened without disassembly. At this time, the synchronous belt can be directly replaced, which greatly saves time and manpower. The tension wheel body 42 moves in the track groove 21 and can be directly taken out by loosening the fixing bolts 46 for quick replacement, facilitating replacement of spare parts, making the tension wheel assembly 4 easy to dismantle and replace without complete dismantling, occupying little space and allowing for flexible installation positions.

[0047] A second embodiment of the present invention provides a control method for a synchronous belt tensioning device of a bottle blowing machine, comprising the following steps:

[0048] Install the synchronous belt tensioner: Use the base bracket 1 to fix the synchronous belt tensioner as a whole on the machine platform of the bottle blowing machine.

[0049] Tensioning operation: set parameters in the controller to control the operation of the cylinder body 52. ​​When the stretching rod of the cylinder body 52 pushes the guide rail slider 3 forward in the track groove 21 through the cylinder top cap 53, the tensioning wheel assembly 4 moves forward together with the guide rail slider 3, so that the tensioning wheel body 42 tensions the synchronous belt to achieve tensioning control. After the guide rail slider 3 moves to the appropriate position, the locking bolt 6 on the limiting side plate 23 is tightened to fix the guide rail slider 3 at the appropriate position in the track groove 21.

[0050] Replacement operation: The controller controls the stretching rod of the cylinder body 52 to pull the guide rail slider 3 to move backward in the track groove 21 through the cylinder top cap 53, so that the tensioning wheel body 42 can move and the synchronous belt is loosened. At this time, the synchronous belt can be directly replaced.

[0051] The above is a detailed description of the preferred embodiments of the present invention, which cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A synchronous belt tensioning device for a bottle blowing machine, characterized in that: include: Base bracket (1); A guide rail platform (2), the guide rail platform (2) is detachably fixedly mounted on the top of the base bracket (1), and a track groove (21) is provided on the top of the guide rail platform (2); A guide rail slider (3), the guide rail slider (3) being slidably disposed in the track groove (21); A tension wheel assembly (4), wherein the tension wheel assembly (4) is fixedly mounted on the top of the guide rail slider (3); A stretching cylinder assembly (5), wherein the telescopic end of the stretching cylinder assembly (5) is fixedly connected to one end of the guide rail slider (3), and the stretching cylinder assembly (5) is used to drive the guide rail slider (3) to slide in the track groove (21).

2. The synchronous belt tensioning device of a bottle blowing machine according to claim 1, characterized in that: The stretching cylinder assembly (5) comprises a fixing plate (51), a cylinder body (52) and a cylinder top cap (53); the fixing plate (51) is detachably mounted on the top end of the base support (1) away from the guide rail platform (2); the cylinder top cap (53) is fixedly arranged on the end of the guide rail slider (3) close to the fixing plate (51); the cylinder body (52) is fixedly arranged on the fixing plate (51); and the stretching rod of the cylinder body (52) passes through the fixing plate (51) and is fixedly connected to the cylinder top cap (53).

3. The synchronous belt tensioning device of a bottle blowing machine according to claim 1 is characterized in that: The guide rail platform (2) comprises a bottom plate (22) and a limiting side plate (23); the bottom plate (22) is detachably fixedly mounted on a side of the top of the base support (1) away from the stretching cylinder assembly (5); the top of the bottom plate (22) is integrally connected with two relatively arranged limiting side plates (23); the track groove (21) is formed between the two limiting side plates (23) and the bottom plate (22).

4. The synchronous belt tensioning device of a bottle blowing machine according to claim 3 is characterized in that: The two limiting side plates (23) are both provided with locking pieces, and the locking pieces are used to fix the guide rail slider (3) in the track groove (21).

5. The synchronous belt tensioning device of a bottle blowing machine according to claim 4 is characterized in that: The locking member is a locking bolt (6), and at least two of the locking bolts (6) are evenly arranged on the outer side surface of the limiting side plate (23).

6. The synchronous belt tensioning device of a bottle blowing machine according to claim 3 is characterized in that: An anti-derail assembly (7) is also provided on the top of the two limiting side plates (23), and the anti-derail assembly (7) is used to prevent the guide rail slider (3) from breaking away from the track groove (21) in the vertical direction.

7. The synchronous belt tensioning device of a bottle blowing machine according to claim 6 is characterized in that: The anti-derail assembly (7) comprises a track pressing plate (71) and a clamping bolt (72); one side of the track pressing plate (71) is detachably fixedly mounted on the top of the corresponding limiting side plate (23) by a plurality of the clamping bolts (72); and the bottom of the other side of the track pressing plate (71) is affixed to the top of the guide rail slider (3).

8. The synchronous belt tensioning device of a bottle blowing machine according to claim 1 is characterized in that: The tensioning wheel assembly (4) comprises a tensioning shaft (41), a tensioning wheel body (42), a sleeve (43) and a bearing (44); the bottom end of the tensioning shaft (41) is fixedly arranged on the top of the guide rail slider (3); the sleeve (43) is fixedly sleeved on the upper section of the tensioning shaft (41); two ends of the sleeve (43) are respectively sleeved with a bearing (44); the tensioning wheel body (42) is rotatably sleeved on the outer periphery of the sleeve (43) via two bearings (44).

9. A synchronous belt tensioning device for a bottle blowing machine according to claim 8, characterized in that: A cover plate (45) is provided on the top of the tensioning shaft (41), and the cover plate (45) is fixed to the top of the tensioning shaft (41) by means of fixing bolts (46).

10. A control method for a synchronous belt tensioning device of a bottle blowing machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: The synchronous belt tensioning device is integrally fixedly mounted on the machine platform of the bottle blowing machine through a base bracket (1); The controller controls the stretching cylinder assembly (5) to work, and when the stretching cylinder assembly (5) drives the guide rail slider (3) to move in the track groove (21) in a direction away from the stretching cylinder assembly (5), the tensioning wheel assembly (4) performs a synchronous belt tensioning operation; When the stretching cylinder assembly (5) drives the guide rail slider (3) to retract in the track groove (21) toward the direction close to the stretching cylinder assembly (5), the tensioning wheel assembly (4) can be moved and the synchronous belt is loosened.

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