A longitudinal tension roller replacement structure

Abstract

The utility model relates to the technical field of film stretching equipment, and specifically to a longitudinal drawing roller replacement structure, comprising a longitudinal drawing roller and a mounting plate vertically arranged at both ends of the longitudinal drawing roller, the roller shafts at both ends of the longitudinal drawing roller are respectively processed with bearing slots and retaining ring slots, and the bearings are respectively mounted by retaining ring clamping, and a mounting seat is arranged on a side of the mounting plate facing the roller shaft, and the mounting seat comprises a lower fixed seat and an upper movable seat, and the top surface of the lower fixed seat and the bottom surface of the upper movable seat are respectively recessed along the axis direction of the roller shaft to form an axis groove, and the two axis grooves are spliced ​​to form a blind hole channel for accommodating the roller shaft, and a positioning ring groove for positioning and accommodating the bearing is formed in the blind hole channel, the lower fixed seat is fixedly connected to the mounting plate by a transverse bolt, and the upper movable seat is detachably connected to the lower fixed seat by a vertical bolt. The utility model can significantly shorten the roller replacement time, reduce the downtime of the production line, and effectively save costs.

Description

Technical Field

[0001] The utility model relates to the technical field of film stretching equipment, in particular to a longitudinal stretching roller replacement structure. Background Art

[0002] At present, many film production lines use longitudinal and transverse biaxial stretching technology. A certain amount of clamping force is required during longitudinal stretching, and the longitudinal stretching roller plays a vital role at this time. The longitudinal stretching roller is used to press the thick film sheet evenly with the stretching roller, and the longitudinal stretching of the film is achieved by setting the stretching ratio of the stretching roller. The material of the longitudinal stretching roller is generally a steel roller core with a heat-resistant silicone rubber coating on the surface. During longitudinal stretching, infrared auxiliary technology is used for heating, which will cause a certain amount of heat radiation to the roller. Due to the high temperature, the service life of parts such as bearings in this area is also a relatively large test. Due to the high temperature and fast stretching speed, the failure rate of the longitudinal stretching roller is high, and the roller needs to be replaced frequently.

[0003] In the prior art, the roller is installed by fixing the roller shaft on the bearing seats at both ends, and the bearing seats are installed on the sliding seats that move up and down. The disadvantages are that the disassembly is troublesome, the disassembly time is long, the labor intensity is high, and the newly installed roller is difficult to position. After the roller is installed, it takes time to position and adjust, which increases the downtime of the production line and the cost. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a longitudinal pulling pressure roller replacement structure, which is not only convenient for disassembling and replacing the pressure roller, but also can achieve quick positioning during installation without unnecessary adjustments, thereby reducing the downtime of the production line and effectively saving costs.

[0005] The utility model is realized through the following technical solutions:

[0006] A longitudinal pressure roller replacement structure is provided, comprising a longitudinal pressure roller and mounting plates vertically arranged at both ends of the longitudinal pressure roller, the pressure roller shafts at both ends of the longitudinal pressure roller are respectively processed with bearing grooves and retaining spring grooves, and the bearings are respectively mounted by retaining spring clamping, a mounting seat is arranged on a side of the mounting plate facing the pressure roller shaft, the mounting seat comprises a lower fixed seat and an upper movable seat, the top surface of the lower fixed seat and the bottom surface of the upper movable seat are respectively recessed along the axis direction of the pressure roller shaft to form an axis groove, the two axis grooves are spliced ​​to form a blind hole channel for accommodating the pressure roller shaft, a positioning ring groove for positioning the accommodating bearing is formed in the blind hole channel, the lower fixed seat is fixedly connected to the mounting plate by transverse bolts, and the upper movable seat is detachably connected to the lower fixed seat by vertical bolts.

[0007] Furthermore, a positioning boss is convexly formed on one side of the mounting plate facing the mounting seat, and positioning grooves for accommodating the positioning boss are concavely formed on the side surface of the lower fixed seat and the side surface of the upper movable seat.

[0008] The positioning bosses on the mounting plate can be plugged into and matched with the positioning grooves formed on the sides of the upper movable seat and the lower fixed seat of the mounting seat for positioning, which can facilitate positioning of the upper movable seat and the lower fixed seat, making installation and replacement convenient and fast.

[0009] Furthermore, an oil hole which is connected to the blind hole channel and into which grease can be injected is formed on the top surface of the upper movable seat.

[0010] An oil hole is provided on the upper movable seat, and lubricating grease can be injected into the blind hole channel through the oil hole, so as to effectively protect the bearing, lubricate the bearing and prolong its service life.

[0011] Furthermore, an annular felt groove is formed in the blind hole channel between the bearing and the longitudinal drawing and pressing roller, and a felt strip is installed in the felt groove.

[0012] An annular felt groove is provided in the blind hole channel, and a felt strip is arranged in the felt groove to seal and inhibit grease leakage, thereby ensuring the lubricating effect of grease on the bearing.

[0013] Furthermore, the top of the mounting plate is connected to the piston rod of a hydraulic cylinder vertically mounted on the crossbeam through a lifting seat, and a support plate is vertically connected to both ends of the longitudinal stretching roller under the crossbeam. A guide rail is vertically arranged on the support plate and a slider connected to the lifting seat is slidably connected on the guide rail.

[0014] The mounting plate is connected to the piston rod of the hydraulic cylinder through the lifting seat, and cooperates with the vertical limit guide of the slider guide rail to ensure the stability of the vertical movement of the longitudinal stretching and pressing rollers, and ensure the stability of the operation of the longitudinal stretching and pressing rollers.

[0015] Beneficial effects of the utility model:

[0016] The utility model installs independent bearings at both ends of the pressure roller shaft, which cooperate with the positioning ring in the mounting seat to realize fast and accurate positioning of the bearings. The mounting seat is divided into an upper and lower body, and the upper movable seat and the lower fixed seat are detachably connected by bolts. When replacing or repairing the pressure roller, it is only necessary to separate the upper movable seat from the lower fixed seat, and the pressure roller and the bearing can be taken out using a lifting tool. It is simple and fast. When installing, the bearing of the new pressure roller can be quickly positioned by placing it in the positioning ring groove. No unnecessary adjustment is required, which greatly shortens the repair and replacement time of the pressure roller and ensures the accuracy of installation, thereby greatly shortening the production line downtime and effectively saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The invention is an installation structure of a longitudinal drawing and pressing roller in the prior art.

[0018] Figure 2 It is a schematic diagram of the replacement structure of the longitudinal drawing and pressing roller in the utility model.

[0019] Figure 3 for Figure 2 A magnified stereoscopic view of point A in the middle.

[0020] As shown in the figure:

[0021] 1. Longitudinal press roller, 2. Press roller shaft, 3. Bearing with seat, 4. Lifting seat, 5. Crossbeam, 6. Hydraulic cylinder, 7. Support plate, 8. Upper movable seat, 9. Lower fixed seat, 10. Mounting plate, 11. Positioning boss, 12. Positioning groove, 13. Positioning ring groove, 14. Felt groove, 15. Bearing. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0023] like Figure 2 As shown, a longitudinal drawing roller replacement structure comprises a longitudinal drawing roller 1 and mounting plates 10 vertically arranged at both ends of the longitudinal drawing roller 1, the roller shafts 2 at both ends of the longitudinal drawing roller 1 are respectively processed with bearing slots and retaining ring slots, and bearings 15 are respectively mounted by retaining rings, and a mounting seat is arranged on a side of the mounting plate 10 facing the roller shaft 2, and the mounting seat comprises a lower fixed seat 9 and an upper movable seat 8, and the top surface of the lower fixed seat 9 and the bottom surface of the upper movable seat 8 are respectively recessed along the axis direction of the roller shaft 2 to form an axis groove, and the two axis grooves are spliced ​​to form a blind hole channel for accommodating the roller shaft, and a positioning ring groove 13 for positioning and accommodating the bearing 15 is formed in the blind hole channel, as shown in FIG. Figure 3 As shown, in the present embodiment, the shaft grooves provided in the upper movable seat 8 and the lower fixed seat 9 are both semicircular grooves, and the inner walls of the corresponding semicircular grooves are formed with positioning semicircular ring grooves. After the mounting seats are spliced ​​and fixed, the two positioning semicircular ring grooves are spliced ​​into a complete positioning ring groove 13, the lower fixed seat 9 is fixedly connected to the mounting plate 10 by transverse bolts, and the upper movable seat 8 is detachably connected to the lower fixed seat 9 by vertical bolts.

[0024] A positioning boss 11 is formed on one side of the mounting plate 10 facing the mounting seat, and a positioning groove 12 for accommodating the positioning boss 11 is formed on the side of the lower fixed seat 9 and the side of the upper movable seat 8. Figure 3 As shown, in this embodiment, the positioning boss 11 is cylindrical, and positioning grooves 12 are respectively provided on the sides of the upper movable seat 8 and the lower fixed seat 9. The two positioning grooves 12 can be spliced ​​together to form a cylindrical groove matching the shape of the positioning boss 11 when the mounting seats are spliced ​​and fixed.

[0025] In order to ensure the rotation stability of the bearing 15, an oil hole connected to the blind hole channel and into which grease can be injected is opened on the top surface of the upper movable seat 8. Lubricating grease can be injected into the blind hole channel through the oil hole to enhance the protective lubrication effect of the bearing 15. An annular felt groove 14 is also formed in the blind hole channel between the bearing 15 and the longitudinal tension roller 1, and a felt strip is installed in the felt groove 14. The upper movable seat 8 and the lower fixed seat 9 are respectively recessed to form semi-annular felt grooves corresponding to the blind hole channels, and respectively installed with felt strips of matching shapes. After the two semi-annular felt grooves are spliced ​​and fixed on the mounting seat, an annular felt groove 14 is formed. After the two semi-annular felt strips are spliced ​​and fixed on the mounting seat, an annular felt ring matching the shape of the felt groove 14 is formed, which can block the grease in the blind hole channel and effectively prevent grease leakage.

[0026] In the prior art, the longitudinal drawing roller 1 is installed by fixing the roller shaft 2 on the bearings 3 with seats at both ends, and the bearings 3 with seats are installed on the sliding seat that moves up and down. The disadvantage is that it is troublesome to disassemble and difficult to position. After the roller is installed, the positioning adjustment needs to be carried out, which takes a long time.

[0027] The replacement structure of this application is as follows Figure 2 As shown, during installation, the top of the mounting plate 10 is connected to the piston rod of the hydraulic cylinder 6 vertically installed on the crossbeam 5 through the lifting seat 4, and support plates 7 are vertically connected to both ends of the longitudinal tension roller 1 below the crossbeam 5. A guide rail is vertically arranged on the support plate 7 and a slider connected to the lifting seat 4 is slidably connected on the guide rail.

[0028] When the longitudinal drawing roller 1 of the utility model needs to be disassembled for maintenance or replacement, the vertical bolts in the upper movable seat 8 are disassembled, the upper movable seat 8 is removed, and then the roller can be quickly taken out for maintenance or replacement with the help of a lifting tool.

[0029] Similarly, during installation, the bearings 15 are installed at both ends of the pressure roller shaft 2, and then hoisted to the working position. The bearings 15 at both ends of the pressure roller shaft 2 are respectively placed in the positioning ring grooves 13 of the lower fixed seat 9 for accommodating the bearings to achieve precise positioning, and then the upper movable seat 8 is re-connected to the lower fixed seat 9 with vertical bolts. During use, grease can be injected into the blind hole channel through the oil hole for lubrication to protect the lubrication performance of the bearing 15 and extend its service life.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A longitudinal stretching and pressing roller replacement structure, comprising a longitudinal stretching and pressing roller and mounting plates vertically arranged at both ends of the longitudinal stretching and pressing roller, characterized in that: The roller shafts at both ends of the longitudinal roller are respectively processed with bearing grooves and retaining ring grooves, and the bearings are respectively installed by retaining ring clamping. A mounting seat is arranged on the side of the mounting plate facing the roller shaft, and the mounting seat includes a lower fixed seat and an upper movable seat. The top surface of the lower fixed seat and the bottom surface of the upper movable seat are respectively recessed along the axis direction of the roller shaft to form an axis groove. The two axis grooves are spliced ​​to form a blind hole channel for accommodating the roller shaft. A positioning ring groove for positioning the accommodating bearing is formed in the blind hole channel. The lower fixed seat is fixedly connected to the mounting plate by transverse bolts, and the upper movable seat is detachably connected to the lower fixed seat by vertical bolts.

2. The longitudinal tension roller replacement structure according to claim 1 is characterized in that: A positioning boss is convexly formed on one side of the mounting plate facing the mounting seat, and positioning grooves for accommodating the positioning boss are concavely formed on the side surface of the lower fixed seat and the side surface of the upper movable seat.

3. The longitudinal tension roller replacement structure according to claim 1 is characterized in that: The top surface of the upper movable seat is provided with an oil hole which is communicated with the blind hole channel and into which grease can be injected.

4. The longitudinal tension roller replacement structure according to claim 1 is characterized in that: An annular felt groove is formed between the bearing and the longitudinal drawing and pressing roller in the blind hole channel, and a felt strip is installed in the felt groove.

5. The longitudinal tension roller replacement structure according to claim 1 is characterized in that: The top of the mounting plate is connected to the piston rod of the hydraulic cylinder vertically mounted on the crossbeam through a lifting seat, and a support plate is vertically connected to both ends of the longitudinal tension roller under the crossbeam. A guide rail is vertically arranged on the support plate and a slider connected to the lifting seat is slidably connected on the guide rail.

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