A vertical longitudinal stretching unit and a film longitudinal stretching machine

Abstract

The application provides a vertical longitudinal stretching machine group and a film longitudinal stretching machine. The vertical longitudinal stretching machine group comprises a vertical guide roller assembly, a driving assembly and a transmission assembly. The vertical guide roller assembly comprises a guide roller frame and a guide roller array installed on the guide roller frame. The guide roller array comprises two rows of guide rollers arranged alternately, and each row of guide rollers comprises N guide rollers. The driving assembly comprises a mounting frame and a motor array. The motor array is installed on the side of the mounting frame far from the guide roller frame. The motor array is matched with the guide roller array, and the motor array comprises two rows of motors arranged alternately, and each row of motors comprises N motors. The transmission assembly comprises a universal coupling array matched with the guide roller array. Each motor transmits torque to the corresponding guide roller through one universal coupling in the universal coupling array. The vertical longitudinal stretching machine group and the film longitudinal stretching machine have small floor space, strong driving capacity and high production capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic film stretching, in particular to a vertical longitudinal stretching machine group and a film longitudinal stretching machine. BACKGROUND

[0002] Plastic film has gradually become an indispensable material in modern industry and daily life due to its multifunctionality and cost-effectiveness and other advantages. In recent years, with the emergence of new equipment, the manufacturing process of plastic film has become more and more perfect, and the quality of the output plastic film has become higher and higher.

[0003] The longitudinal stretching machine group in the film longitudinal stretching machine plays an important role in manufacturing high-performance plastic film, and the longitudinal stretching machine group can stretch the plastic film in the longitudinal direction. The common longitudinal stretching machine group at present is a horizontal longitudinal stretching machine group, which has a large floor area. SUMMARY

[0004] Therefore, the present application provides a vertical longitudinal stretching machine group and a film longitudinal stretching machine to reduce the floor area of the longitudinal stretching machine group and improve the driving capacity of the longitudinal stretching machine group.

[0005] Specifically, the present application is realized by the following technical solutions:

[0006] The first aspect of the present application provides a vertical longitudinal stretching machine group, which comprises a vertical guide roller assembly, a driving assembly and a transmission assembly; wherein,

[0007] The vertical guide roller assembly comprises a guide roller frame and an array of guide rollers mounted on the guide roller frame; wherein the array of guide rollers comprises two rows of guide rollers arranged alternately, and each row of guide rollers comprises N guide rollers;

[0008] The driving assembly comprises a mounting frame and an array of motors; wherein the array of motors is mounted on the side of the mounting frame away from the guide roller frame; the array of motors matches the array of guide rollers, and the array of motors comprises two rows of motors arranged alternately, and each row of motors comprises N motors;

[0009] The transmission assembly comprises an array of universal couplings matching the array of guide rollers, and each motor transmits torque to the corresponding guide roller through one universal coupling in the array of universal couplings; wherein the array of motors and the array of guide rollers have a matching relationship in position, which is determined based on the working allowable range of the universal coupling and the preset range of the roll gap of the adjacent two guide rollers.

[0010] The second aspect of the present application provides a film longitudinal stretching machine, which comprises a plurality of longitudinal stretching machine groups, at least one longitudinal stretching machine group of the plurality of longitudinal stretching machine groups being any vertical longitudinal stretching machine group provided by the first aspect of the present application.

[0011] The vertical longitudinal stretching machine group provided by the present application is provided with a vertical guide roller assembly, a driving assembly and a transmission assembly, a guide roller frame is arranged on the vertical guide roller assembly, and an array of guide rollers is installed on the guide roller frame, a mounting frame is arranged on the driving assembly, and an array of motors is installed on the mounting frame, an array of universal shaft couplings matching the array of guide rollers is arranged on the transmission assembly, the array of guide rollers comprises two rows of guide rollers arranged alternately, each row of guide rollers comprises N guide rollers, and the array of motors matches the array of guide rollers, so that one motor and its corresponding guide roller are connected by one universal shaft coupling, and since the array of guide rollers and the array of motors are vertically arranged, the floor area can be reduced, thereby a high-power motor with a larger outer shape size can be used, the power of the driving assembly as a whole can be improved, the driving capacity can be improved, and the production capacity can be improved.

[0012] In addition, the vertical longitudinal stretching machine group provided by the present application is provided with a guide roller frame comprising a base, a pair of fixed side plates and a pair of movable side plates arranged on the base, one row of guide rollers in the array of guide rollers is installed on the pair of fixed side plates, the other row of guide rollers in the array of guide rollers is installed on the pair of movable side plates, the pair of movable side plates can move away from or close to the pair of fixed side plates, and the movable stroke of the pair of movable side plates is equal to 2 times the distance in the width direction between one row of guide rollers installed on the pair of movable side plates and the corresponding row of motors of the row of guide rollers, so that the pair of movable side plates can be in an undrawn state during use, and the pair of movable side plates can be in a drawn state when the guide rollers need to be disassembled, so that the disassembly and assembly of the guide rollers can be facilitated. In addition, by setting the movable stroke of the pair of movable side plates to be equal to 2 times the distance in the width direction between one row of guide rollers installed on the pair of movable side plates and the corresponding row of motors of the row of guide rollers, the axis angle of the universal shaft coupling is within the working allowable range whether the pair of movable side plates is in the drawn state or the undrawn state.

[0013] Further, the vertical longitudinal stretching machine set provided by the application has the advantages that: the first support beam and the second support beam are arranged between the first fixed side plate and the motor mounting plate of the driving assembly, the first support beam and the second support beam are equal in length, and the first support beam and the second support beam are arranged at the diagonal positions of the first fixed side plate, so that the overall rigidity of the vertical longitudinal stretching machine set can be improved, the stability of the equipment during operation can be ensured, the parallelism between the motor mounting plate and the first fixed side plate can be ensured to the maximum extent, the parallelism between the motor output shaft and the shaft head of the guide roller can be ensured, the arrangement requirements of the Z-shaped or W-shaped universal coupling can be met, the universal coupling can realize equal-angle-speed transmission, and the installation and positioning accuracy of the driving assembly can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 a schematic diagram of a vertical longitudinal stretching machine set according to an example embodiment of the application;

[0015] Figure 2 a schematic diagram of a side plate on a guide roller frame according to an example embodiment of the application;

[0016] Figure 3 a schematic diagram of a side plate on a guide roller frame according to another example embodiment of the application;

[0017] Figure 4A a perspective view of a vertical guide roller assembly according to an example embodiment of the application;

[0018] Figure 4B an exploded view of a vertical guide roller assembly according to an example embodiment of the application;

[0019] Figure 5 a diagram of the positional relationship between a guide roller array and a motor array before and after a pair of moving side plates are pulled apart according to an example embodiment of the application;

[0020] Figure 6 a schematic diagram of a mounting frame according to an example embodiment of the application;

[0021] Figure 7 a schematic diagram of a driving assembly according to an example embodiment of the application;

[0022] Figure 8 a diagram of the positional relationship between a guide roller array and a motor array when a pair of moving side plates are not pulled apart according to an example embodiment of the application;

[0023] Figure 9 a diagram of the positional relationship between a guide roller array and a motor array when a pair of moving side plates are not pulled apart according to another example embodiment of the application;

[0024] Figure 10FIG. 1 shows a schematic view of a motor mounting plate according to an example embodiment of the present application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1: vertical godet assembly

[0027] 11: godet frame

[0028] 111: base

[0029] 112: pair of side plates

[0030] 1121: pair of fixed side plates

[0031] 1122: pair of movable side plates

[0032] 12: array of godets

[0033] 13: array of rubber rollers

[0034] 14: air cylinder

[0035] 2: drive assembly

[0036] 21: mounting frame

[0037] 211: cruciform base

[0038] 212: fixed seat

[0039] 213: motor mounting plate

[0040] 2131: lifting hole

[0041] 2132: sink or through hole

[0042] 214: support structure

[0043] 22: array of motors

[0044] 3: transmission assembly

[0045] 31: array of universal couplings

[0046] 41: first support beam

[0047] 42: second support beam DETAILED DESCRIPTION

[0048] Example embodiments will be described in detail herein with reference to the attached drawings. The description of the example embodiments is intended to apply to all alternative embodiments, unless otherwise contextually implied. The following detailed description is not meant to limit the scope of the example embodiments in any way.

[0049] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this application, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used herein, refers to and encompasses any or all possible combinations of one or more of the associated listed items.

[0050] It is to be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited to these terms. These terms are only used to distinguish one piece of information from another. For example, a first information can also be termed a second information, similarly, a second information can also be termed a first information without departing from the scope of the present application. Depending on the context, the word "if" as used herein can be interpreted as meaning "when" or "in response to determining".

[0051] The specific embodiments are given as follows to introduce the technical scheme of the present application in detail.

[0052] Figure 1 The schematic diagram of the vertical longitudinal stretching machine set is shown for an exemplary embodiment of the present application. Please refer to Figure 1 The vertical stretching machine set provided by the embodiment comprises a vertical guide roller assembly 1, a driving assembly 2 and a transmission assembly 3; wherein,

[0053] The vertical guide roller assembly 1 comprises a guide roller frame 11 and a guide roller array 12 installed on the guide roller frame 11; wherein, the guide roller array 12 comprises two rows of guide rollers arranged alternately, and each row of guide rollers comprises N guide rollers;

[0054] The driving assembly 2 comprises a mounting frame 21 and a motor array 22; wherein, the motor array 22 is installed on the side of the mounting frame 21 away from the guide roller frame 11; the motor array 22 matches the guide roller array 12, and the motor array 22 comprises two rows of motors arranged alternately, and each row of motors comprises N motors;

[0055] The transmission assembly 3 comprises a universal joint array 31 matching the guide roller array 12, and each motor transmits torque to the corresponding guide roller through a universal joint in the universal joint array 31; wherein, the motor array and the guide roller array have a matching relationship in position, and the matching relationship is determined based on the working allowable range of the universal joint and the preset roller gap range of the adjacent two guide rollers.

[0056] It is to be noted that, please refer to Figure 1The vertical guide roller assembly 1 is a core functional component of a vertical longitudinal stretching machine group. During the material stretching process, the vertical guide roller assembly 1 directly contacts the stretching material, guides and supports the stretching material, and ensures that the stretching material can maintain the correct direction and orientation during the stretching process.

[0057] The vertical guide roller assembly 1 includes a guide roller frame 11 and a guide roller array 12 mounted on the guide roller frame 11.

[0058] Specifically, the guide roller frame 11 can include a base 111 and a pair of side plates 112 arranged on the base 111. The pair of side plates 112 includes two side plates arranged oppositely.

[0059] Specifically, please refer to Figure 1 In one possible implementation, the base 111 is composed of two parallel cross beams and two parallel longitudinal beams (it should be noted that, in this application, in order to facilitate the distinction, the beam along the length direction is referred to as the cross beam, and the beam along the width direction is referred to as the longitudinal beam). The two cross beams and the two longitudinal beams form a rectangular frame structure. In specific implementation, one of the longitudinal beams can be arranged at the end of the two cross beams, and the other longitudinal beam can be arranged at a certain intermediate position of the two cross beams, so as to form a stable seat structure.

[0060] In specific implementation, the cross beam and the longitudinal beam can be connected together through fasteners, or connected together through welding, which is not limited in this embodiment. In addition, the material of the base 111 is also selected according to actual needs, which is not limited in this embodiment.

[0061] Figure 2 A schematic view of the side plate on the guide roller frame shown in an exemplary embodiment of the present application. Figure 3 A schematic view of the side plate on the guide roller frame shown in another exemplary embodiment of the present application. Please refer to Figure 2 and Figure 3 , Figure 2 and Figure 3 A schematic view of one side plate constituting a pair of side plates 112 is shown. It can be understood that the two side plates constituting the pair of side plates 112 are the same in appearance. Hereinafter, one side plate is taken as an example to explain the pair of side plates 112.

[0062] Please refer to Figure 2 and Figure 3 Two rows of fastener mounting holes are arranged on the side plate for mounting two rows of guide rollers. Specifically, please refer to Figure 2 In the example shown in Figure 2 , the notch of the fastener mounting hole faces the inner side, and in the example shown in Figure 3 , the notch of the fastener mounting hole faces the outer side (it should be noted that Figure 2 andFigure 3 The orientation of the gap is for illustration only, and does not limit the installation position of the guide roller, which matches the motor array. The installation position of the guide roller does not change if the position of the motor array does not change.

[0063] Please refer to Figure 2 When the gap of the fastener mounting hole faces the inner side, each side plate can be a spliced side plate formed by splicing two base plates, and each base plate is provided with a column of fastener mounting holes. Please refer to Figure 3 Further, when the gap of the fastener mounting hole faces the outer side, the side plate can be a spliced side plate formed by splicing two base plates, and each base plate is provided with a column of fastener mounting holes, or it can be a large base plate provided with two columns of fastener mounting holes.

[0064] It should be noted that when each side plate is formed by a base plate, the base plate is fixed. Further, when each side plate is a spliced side plate formed by splicing two base plates, i.e., a pair of side plates 112 is formed by two pairs of base plates, the two pairs of base plates can be relatively opened and closed, i.e., one pair of base plates is fixed, and the other pair of base plates can be moved.

[0065] It should be noted that please continue to refer to Figure 2 and Figure 3 In the example shown in Figure 2 , the gap of the fastener mounting hole faces inward, and in order to facilitate the disassembly and assembly of the guide roller, at this time, the two pairs of base plates can be relatively opened and closed, one pair of base plates is fixed, and the other pair of base plates can be moved. In the example shown in Figure 3 , when the side plate is formed by two base plates, at this time, since the gap of the fastener mounting hole faces outward, the guide roller can be directly disassembled and assembled from both sides (it should be noted that before disassembling the guide roller, the rubber roller on the outer side needs to be removed), therefore, at this time, the two pairs of base plates can not be relatively opened and closed, or can be relatively opened and closed.

[0066] It should be noted that please continue to refer to Figure 4A and Figure 4B The orientation of the gap is set according to actual needs, which is not limited in this embodiment.

[0067] Preferably, Figure 4A is a perspective view of a vertical guide roller assembly according to an example embodiment of the present application. Figure 4B is an exploded view of a vertical guide roller assembly according to an example embodiment of the present application. Please refer to Figure 4A and Figure 4B In Figure 4A and Figure 4BIn the shown example, the guide roller stand 11 in the vertical guide roller assembly 1 comprises a base 111, and a pair of fixed side plates 1121 and a pair of movable side plates 1122 arranged on the base 111; wherein the pair of movable side plates 1122 can move towards or away from the pair of fixed side plates 1121; one column of guide rollers in the guide roller array 12 is mounted on the pair of fixed side plates 1121, and another column of guide rollers in the guide roller array 12 is mounted on the pair of movable side plates 1122.

[0068] The movable stroke of the pair of movable side plates is equal to 2 times the spacing of one column of guide rollers mounted on the pair of movable side plates and the corresponding column of motors in the width direction.

[0069] Specifically, please continue to refer to Figure 4B and Figure 4B The pair of fixed side plates 1121 and the pair of movable side plates 1122 are arranged on the longitudinal beams in the base 111, wherein one fixed side plate and one movable side plate are spliced to form one spliced side plate, and the pair of fixed side plates 1121 and the pair of movable side plates 1122 together form two spliced side plates, which are arranged on the two transverse beams of the base 111 of the guide roller stand 11, forming a pair of side plates 112.

[0070] It can be understood that in one embodiment, the pair of fixed side plates 1121 can be arranged near the strip material inlet side, and the pair of movable side plates 1122 can be arranged near the strip material outlet side; in another embodiment, the pair of fixed side plates 1121 can be arranged near the strip material outlet side, and the pair of movable side plates 1122 can be arranged near the strip material inlet side, which is not limited in the present embodiment.

[0071] It should be noted that please continue to refer to Figure 4B In one possible implementation, the pair of side plates 112 is mounted on a side plate mounting plate, the pair of movable side plates 1122 and the side plate mounting plate are mounted on a slide, and further, the side plate mounting plate on the right side (i.e., the driving side) Figure 5 of the transmission is fixed to the base by welding or bolt connection. Further, preferably, the side plate mounting plate on the left side (i.e., the operating side, Figure 5 ) is placed on a smooth plate (wherein the smooth plate refers to a plate with a small friction coefficient, which can be a stainless steel plate, a copper plate, a wear-resistant plastic plate, etc.), and the smooth plate is fixed to the base by a countersunk screw connection, and the fastener mounting surface is not higher than the smooth plate surface.

[0072] It should be noted that, as described above, since the smooth plate is arranged below the side plate mounting plate on the operating side, the side plate mounting plate on the driving side is similar to the side plate mounting plate on the operating side, but not the same height. In addition, the side plate mounting plate on the driving side can also be integrated with the base.

[0073] It should be noted that after the smooth plate is allowed to have a temperature higher than room temperature, the side plate on the non-driving side is driven by the guide roller to expand along the axial direction of the guide roller, so that the guide roller is prevented from being curved due to thermal expansion and being constrained at both ends, thereby affecting the parallelism and further affecting the thickness uniformity on the cross section of the strip.

[0074] Figure 6 The positional relationship between the guide roller array and the motor array before and after a pair of moving side plates are pulled apart is shown in an example embodiment of the present application. Please refer to Figure 6 The movable stroke of the pair of moving side plates is equal to 2 times the distance in the width direction between a column of guide rollers and a column of motors corresponding to the column of guide rollers. In this way, the axial angle of the universal joint is within the working allowable range both before and after the pair of moving side plates are pulled apart.

[0075] Specifically, the guide roller array 12 includes two columns of guide rollers arranged in a staggered manner, and each column of guide rollers includes N guide rollers. It can be understood that the number of guide rollers included in each column of guide rollers is set according to actual needs, which is not limited herein. For example, in a possible implementation manner, each column of guide rollers can include three guide rollers, four guide rollers, and five guide rollers.

[0076] It should be noted that the two columns of guide rollers in the guide roller array 12 are arranged in a staggered manner. For example, in an embodiment, the distance between adjacent two guide rollers in each column of guide rollers is the same. Further, for the first column of guide rollers and the second column of guide rollers, they are staggered by a certain distance in the row direction (the width direction shown in the figure) and are staggered by a certain distance in the column direction (the height direction shown in the figure), so as to form the two columns of guide rollers arranged in a staggered manner.

[0077] The driving assembly 2 will be introduced below. Specifically, the driving assembly 2 serves as the power source of the vertical longitudinal stretching machine set, and provides the required power and torque for material stretching.

[0078] Specifically, the driving assembly 2 includes a mounting frame 21 and a motor array 22. The motor array 22 is installed on the mounting frame 21 away from the guide roller frame 11, and the motor array 22 is matched with the guide roller array 12 in the vertical guide roller assembly 1, and includes two groups of motors arranged in a staggered manner, and each column of motors includes N motors.

[0079] It should be noted that the specific structure of the mounting frame 21 is set according to actual needs, which is not limited in the embodiment.

[0080] For example, Figure 6 A schematic diagram of the mounting frame is shown in an example embodiment of the present application. Please refer to Figure 7 In the example embodiment, the mounting frame 21 includes a base 211 and a plurality of supporting rods 212 arranged on the base 211. Figure 7In the shown example, the mounting rack 21 comprises a motor mounting plate, a first ground mounting plate, a support beam and a second ground mounting plate, wherein the first ground mounting plate is used to support and fix the motor mounting plate, the support beam is used to support the motor mounting plate so that it is in a vertical direction, and the second ground mounting plate is used to support and fix the support beam.

[0081] Optionally, in a possible implementation, the mounting rack 21 can comprise a motor mounting plate, a support structure and a base; the motor mounting plate is fixed on the base in a perpendicular manner to the base, and the support structure is used to support the motor mounting plate.

[0082] It should be noted that the specific structure of the base and the support structure is set according to actual needs, and in the present embodiment, it is not limited. For example, in a possible implementation, the base can be a base constituted by a whole plate, and the support structure can be a triangular plate, two right-angle edges of the triangular plate being respectively attached to the base and the motor mounting plate.

[0083] Preferably, Figure 7 A schematic diagram of a drive assembly is shown in an example embodiment of the present application. Please refer to Figure 7 In a possible implementation, the mounting rack 21 comprises a ridded base 211, a fixing seat 212, a motor mounting plate 213 and a support structure 214; wherein,

[0084] The fixing seat 212 is installed at the inner crossbeam position of the ridded base 211; the fixing seat 212 is used to fix and support the motor mounting plate 213;

[0085] The motor mounting plate 213 is fixed on the fixing seat 212, and is used to provide a mounting space for the motor array 22;

[0086] One end of the support structure 214 is connected with the motor mounting plate 213, and the other end is connected with the ridded base 211; wherein, the support structure 214 is used to support the motor mounting plate 213, and prevent the motor mounting wall plate from overturning.

[0087] It should be noted that the mounting rack 21 can provide a stable support platform for the motor array 22, and the solid mounting rack 21 can ensure that the motor array 22 does not displace during operation, thereby ensuring the safety of the motor array 22. Therefore, the manufacturing material of the mounting rack 21 needs to meet a certain rigidity. For example, in an embodiment, the mounting rack 21 can be made of steel.

[0088] It should be noted that the day-shaped base 211 is composed of a rectangular frame and an internal beam, and the internal beam divides the rectangular frame into two "mouth" shaped areas, which are the installation operation platforms on both sides of the motor mounting plate 213, and can provide standing and operating space for the operator to install, maintain and check the motor.

[0089] Specifically, the fixing seat 212 is an L-shaped fixing seat or a groove-shaped fixing seat, which is installed at the internal beam position of the day-shaped base 211. The internal beam position of the day-shaped base 211 is provided with a mounting plate, and the fixing seat 212 can be fixedly installed on the mounting plate. Further, the motor mounting plate 213 is fixed on the fixing seat 212 to support the motor mounting plate 213 and ensure the stability of the motor.

[0090] It should be noted that the fixing seat 212 can be fixed on the mounting plate at the internal beam position by means of bolt mechanical connection, welding and the like. In the present embodiment, the fixing mode of the fixing seat 212 is not limited.

[0091] Further, one end of the support structure 214 is connected with the motor mounting plate 213, and the other end is connected with the day-shaped base 211. The support structure 214 is used to support the motor mounting plate 213 to effectively prevent the motor mounting plate 213 from overturning.

[0092] Specifically, the support structure 214 can be located on the side of the motor mounting plate 213 where the motor is installed, or on the side of the motor mounting plate 213 where the motor is not installed. In the present embodiment, the location of the support structure 214 is not limited. In addition, the support structure 214 can be supported on the middle part of the motor mounting plate 213, or on both sides of the motor mounting plate 213. In the present embodiment, the support position of the support structure 214 is not limited. In addition, the support structure 214 can be a diagonal support, a vertical support, a side support, a support rib plate and the like. In the present embodiment, the structure of the support structure 214 is not limited. In addition, the support structure 214 can be composed of a plurality of support members. In the present embodiment, the specific number of the plurality of support members is not limited. In addition, when the support structure 214 is composed of a plurality of support members, the installation positions and structure forms of the plurality of support members can be the same or different. In the present embodiment, the installation positions and structure forms of the plurality of support members are not limited.

[0093] Optionally, in one possible implementation, please continue to refer to Figure 1In a possible implementation, the support structure 214 can include a first inclined support and a second inclined support, wherein the first inclined support and the second inclined support are respectively installed on both sides of the motor mounting plate 213 in the width direction; each inclined support is installed on a side of the motor mounting plate 213 on which the motor array 22 is not installed; and each inclined support forms a triangular structure with the vertical plane in which the motor mounting plate 213 is located and the horizontal plane in which the day-shaped base 211 is located.

[0094] Specifically, by installing the inclined support on the side on which the motor is not installed, the influence of the inclined support on the motor array 22 can be avoided, and the disassembly and assembly of the motor array 22 can be facilitated.

[0095] In addition, by forming a triangular structure with the first inclined support and the second inclined support and the vertical plane in which the motor mounting plate 213 is located and the horizontal plane in which the day-shaped base is located, a strong support effect can be formed on the motor mounting plate 213.

[0096] It can be understood that, in order to better exert the support effect of the triangular structure, the connection position of the first support and the second support and the motor mounting plate 213 needs to be higher than the height of the center of gravity of the motor array 22. In actual implementation, the specific connection position is set according to actual conditions, and in the embodiment, the specific connection position is not limited. For example, in an embodiment, the connection position of the first inclined support and the second inclined support and the motor mounting plate 213 is located at half of the motor mounting plate 213, and the number of motors above the connection position of the first inclined support and the second inclined support and the motor mounting plate 213 is not more than two; for another example, in another embodiment, the included angle between the first inclined support and the second inclined support and the horizontal plane is 60°, and the angle can provide the best support stability.

[0097] It should be noted that the fixing seat 212 and the support structure 214 jointly realize the support of the motor mounting plate 213, and form a double insurance design, which can prevent the motor mounting plate from overturning and ensure the safety and reliability of the driving assembly 2. In addition, the inclined support is located on the side of the motor mounting plate 213 on which the motor is not installed (i.e., the inclined support is located on the side of the motor output shaft), which does not affect the disassembly, wiring and other operations of the motor, and facilitates the maintenance of the motor. Further, the inclined support is installed on the outermost side of the motor mounting plate 213, which can ensure the maximum support area and improve the stability of the support.

[0098] Please continue to refer to Figure 8It can be understood that the motor array 22 matches the guide roller array 12, and the matching includes a matching relationship in quantity and a matching relationship in position. That is, one motor corresponds to one guide roller, and the matching relationship in position between the motor array and the guide roller array is determined based on the working allowable range of the universal joint and the preset roller gap range of adjacent two guide rollers. That is, the matching relationship in position needs to meet the working allowable range of the universal joint, and the same row of motors do not interfere with each other, the same column of motors do not interfere with each other, and the roller gap of adjacent two motors (in the same row and different columns) is within the preset roller gap range of adjacent two guide rollers (that is, the roller gap of adjacent two motors is within the preset range). Specific embodiments will be given below to illustrate the matching relationship in position between the motor array and the guide roller array, which will not be repeated here.

[0099] Further, the vertical longitudinal stretching machine set provided by the application further includes a transmission assembly 3, which is connected to the guide roller array 12 as a bridge of the driving assembly 2 and is responsible for transmitting the power and torque generated by the motor array 22 in the driving assembly 2 to the guide rollers. Optionally, please continue to refer to Figure 8 The transmission assembly 3 includes a universal joint array 31, which matches the guide roller array 12, and each motor transmits torque to the corresponding guide roller through one universal joint in the universal joint array 31.

[0100] The vertical longitudinal stretching machine set provided by the embodiment is provided by arranging a vertical guide roller assembly, a driving assembly and a transmission assembly, arranging a guide roller frame on the vertical guide roller assembly and a guide roller array installed on the guide roller frame, arranging a mounting frame on the driving assembly and a motor array installed on the mounting frame, arranging a universal joint array matching the guide roller array on the transmission assembly, and arranging two columns of guide rollers in the guide roller array, each column of guide rollers including N guide rollers, and matching the motor array with the guide roller array. In this way, one motor and its corresponding guide roller can be connected through one universal joint device, and since the guide roller array and the motor array are both arranged vertically, the floor area can be reduced. In addition, the installation space of the guide roller array and the motor array is not limited, and a large-power motor with a larger external size can be used, the power of the driving assembly as a whole can be improved, the driving capacity can be improved, and the production capacity can be improved.

[0101] Two specific embodiments will be given below to illustrate the positional relationship between the guide roller array and the motor array.

[0102] Specifically, Figure 8 The positional relationship between the guide roller array and the motor array shown in the example of the application when a pair of moving side plates is not pulled apart is shown in the figure. Please refer to Figure 8 In Figure 8 the example shown in the figure, each column of guide rollers includes an even number of guide rollers; wherein,

[0103] The distance by which the two rows of guide rollers are offset in the width direction is equal to n; the distance by which the two rows of guide rollers are offset in the height direction is equal to k; the distance between adjacent two guide rollers in each row of guide rollers is equal to 2k; wherein the values of n and k satisfy that the roll gap range of adjacent two guide rollers is within a preset range;

[0104] The distance between the first row of motors and the corresponding row of guide rollers in the width direction is equal to m1, and the distance between the second row of motors and the corresponding row of guide rollers in the width direction is equal to m2;

[0105] Each row of motors includes a first group of motors and a second group of motors, and the first group of motors and the second group of motors are symmetrically arranged about a specified center line; the specified center line is the line of symmetry of the two guide rollers in the middle of the corresponding row of guide rollers of the row of motors; the distance between the target motor closest to the specified center line in each row of motors and the corresponding target guide roller in the height direction is a1; the distance between adjacent two motors in each row of motors is equal to B; wherein B = 2k + 2a1; wherein m1, m2, and a1 are determined based on the working allowable range of the universal shaft.

[0106] Please refer to Figure 8 , in Figure 8 the example, taking each row of guide rollers including four guide rollers as an example for illustration. In Figure 8 , the letter R represents a guide roller, the letter M represents a motor, i represents a row, j represents a column, the value of i is 1 to 4, the value of j is 1 to 2, in addition, the motor Mij corresponds to the guide roller Rij, that is, in Figure 8 the example, R11, R21, R31, and R41 are the first row of guide rollers, R12, R22, R32, and R42 are the second row of guide rollers, M11, M21, M31, and M41 are the first row of motors, and M12, M22, M32, and M42 are the second row of motors.

[0107] In each row of guide rollers, the distance between adjacent two guide rollers in the height direction is equal, equal to 2k, in addition, the distance by which the first row of guide rollers and the second row of guide rollers are offset in the width direction is n, and the distance by which the first row of guide rollers and the second row of guide rollers are offset in the height direction is k. Wherein n and k are based on satisfying that the roll gap range of adjacent two guide rollers (i is the same and j is different) is within a preset range, wherein the preset range is set according to actual needs, which is not limited in this embodiment. For example, in an embodiment, the preset range is within 16~19mm (not including 16mm and 19mm).

[0108] In addition, please refer to Figure 9For a column of motors, it is divided into two groups by the center line of the two rollers in the middle of the corresponding column of rollers (for the sake of distinction, the center line is recorded as a specific center line); For the sake of convenience, it is recorded as the first group of motors and the second group of motors; For example, in the example shown in Figure 9 For the first column of motors, the two rollers in the middle of the corresponding column of rollers are R21 and R31, respectively, and the center line of the two rollers is as shown in the figure, further, the first group of motors includes M11 and M21, and the second group of motors includes M31 and M41, the first group of motors and the second group of motors are symmetrically arranged about the specified center line, that is, M11 and M41 are symmetrically arranged about the specified center line, and M21 and M31 are symmetrically arranged about the specified center point. Further, the distance between the motor closest to the specified center line in each column of motors (recorded as the target motor) and its corresponding roller (recorded as the target roller) in the height direction is a1; That is, the distance between M31 and R31 in the height direction is a1, so that the distance between M31 and M21 is equal to 2a1+2k, that is, the distance between the two adjacent motors in each column of motors is 2k+2a1. It should be noted that a1 is determined based on the working allowable range of the universal coupling.

[0109] Further, please continue to refer to Figure 9 The distance between the first column of motors and the corresponding column of rollers of the column of motors in the width direction is equal to m1, and the distance between the second column of motors and the corresponding column of rollers of the column of motors in the width direction is equal to m2. Wherein, m1 and m2 can be the same or different, in the embodiment, they are not limited. In addition, m1 and m2 are determined based on the working allowable range of the universal coupling.

[0110] It can be understood that the value of m1+m2+n needs to ensure that the motors in the same row do not interfere with each other, and the value of 2k+2a1 needs to ensure that the motors in the same column do not interfere with each other. In addition, under the condition of meeting the above requirements, each value should take the lower limit or a value close to the lower limit, so that the motor mounting plate size is smaller and the motor space layout is compact.

[0111] Figure 9 The position relationship diagram of the roller array and the motor array of another exemplary embodiment of the present application when a pair of moving side plates is not pulled apart. Please refer to Figure 9 In the example shown in Figure 9 Each column of rollers includes an odd number of rollers; wherein,

[0112] Each column of rollers includes an odd number of rollers; wherein,

[0113] The distance by which the two rows of guide rollers are staggered in the width direction is equal to n; the distance by which the two rows of guide rollers are staggered in the height direction is equal to k; the distance between adjacent two guide rollers in each row of guide rollers is equal to 2k; wherein the values of n and k satisfy that the roll gap range of adjacent two guide rollers is within a preset range;

[0114] The distance between the first row of motors and the corresponding row of guide rollers in the width direction is equal to m1, and the distance between the second row of motors and the corresponding row of guide rollers in the width direction is equal to m2;

[0115] The distance between the installation position of the center motor in each row of motors and the installation position of the corresponding guide roller in the height direction is 0; the other motors in each row of motors are symmetrically arranged about the center motor; the distance between adjacent two motors in each row of motors is equal to A; wherein A = 2k + A1; m1, m2 and A1 are determined based on the working allowable range of the universal shaft.

[0116] Specifically, please refer to Figure 9 , in Figure 9 , it is illustrated by taking an example that each row of guide rollers includes five guide rollers. In Figure 9 , the letter R represents a guide roller, the letter M represents a motor, i represents a row, j represents a column, the value of i is 1 to 5, and the value of j is 1 to 2, in addition, the motor Mij corresponds to the guide roller Rij, that is, in Figure 1 , the R11, R21, R31, R41 and R51 are the first row of guide rollers, the R12, R22, R32, R42 and R52 are the second row of guide rollers, the M11, M21, M31, M41 and M51 are the first row of motors, and the M12, M22, M32, M42 and M52 are the second row of motors.

[0117] In each row of guide rollers, the distance between adjacent two guide rollers in the height direction is equal to 2k, in addition, the distance by which the first row of guide rollers and the second row of guide rollers are staggered in the width direction is n, and the distance by which the first row of guide rollers and the second row of guide rollers are staggered in the height direction is k, wherein n and k are based on satisfying that the roll gap range of adjacent two guide rollers (i is the same and j is different) is within a preset range, wherein the preset range is set according to actual needs, which is not limited in the embodiment. For example, in an embodiment, the preset range is within 16-19mm (not including 16mm and 19mm).

[0118] In addition, please refer to Figure 6For a column of motors, the installation position of the center motor in the center position and the installation position of the guide roller corresponding to the center motor are 0 in the height direction, that is, the distance between M31 and R31 in the height direction is 0, and the distance between M32 and R32 in the height direction is 0. Further, the other motors are symmetrically arranged about the center motor, that is, M11 and M51 are symmetrically arranged about M31, and M21 and M41 are symmetrically arranged about M31; that is, M12 and M52 are symmetrically arranged about M32, and M22 and M42 are symmetrically arranged about M32.

[0119] Further, the distance between two adjacent motors in each column of motors is equal to A; wherein the A = 2k + A1; the A1 is determined based on the working allowable range of the universal coupling.

[0120] In addition, please continue to refer to Figure 1 , the distance between the first column of motors and the corresponding column of guide rollers in the width direction is equal to m1, and the distance between the second column of motors and the corresponding column of guide rollers in the width direction is equal to m2. Wherein, m1 and m2 can be the same or different, and in the embodiment, they are not limited. In addition, the m1 and the m2 are determined based on the working allowable range of the universal coupling.

[0121] It can be understood that the value of m1 + m2 + n needs to ensure that the motors in the same row do not interfere with each other, and the value of 2k + A1 needs to ensure that the motors in the same column do not interfere with each other. In addition, under the condition of meeting the above requirements, each value should take the lower limit or a value close to the lower limit, so that the motor mounting plate size is smaller and the motor space layout is compact.

[0122] The above two embodiments give two kinds of position arrangement modes of the guide roller array and the motor array. In this way, by accurately setting the positional relationship between the guide roller array and the motor array, on the one hand, the compactness of the equipment can be improved, and the volume of the vertical longitudinal stretching machine set can be reduced, the floor space can be saved, which is conducive to the arrangement and integration of the production line. On the other hand, based on the preset roll gap range, n and k are determined, and based on the working allowable range of the universal coupling, m1, m2, a1 or A1 and other key parameters are determined, so that the transmission between each motor and the guide roller is more flexible and adaptable, so as to absorb the small errors or vibrations in the mechanical system, ensure the smooth operation of the entire stretching process, and prolong the service life of the equipment.

[0123] It can be understood that a pair of fixed side plates 1121 is composed of two opposite fixed side plates. In order to distinguish, one fixed side plate close to the driving assembly 2 is recorded as the first fixed side plate, and the other fixed side plate away from the driving assembly 2 is recorded as the second fixed side plate. Further, please continue to refer to Figure 6 and Figure 4AIn a possible implementation, the vertical longitudinal stretching machine group further comprises a first support beam 41 and a second support beam 42; the first support beam 41 and the second support beam 42 are arranged between the first fixed side plate of the pair of fixed side plates 1121 and the motor mounting plate 213 close to the driving assembly 2; the first support beam 41 and the second support beam 42 are equal in length, and a first position where the first support beam 41 is fixedly connected with the first fixed side plate and a second position where the second support beam 42 is fixedly connected with the first fixed side plate are located at opposite corners of the first fixed side plate.

[0124] Please refer to Figure 4A and Figure 10 , two support beams are arranged between the first fixed side plate and the motor mounting plate 213, the two support beams are equal in length, and the two support beams are located at opposite corners of the first fixed side plate.

[0125] It should be noted that, please continue to refer to Figure 10 , support beams can also be arranged between the pair of side plates of the guide roller frame 11 to further improve the rigidity of the overall equipment.

[0126] The vertical longitudinal stretching machine group provided in the embodiment can maximize the parallelism between the motor mounting plate and the first fixed side plate, thereby ensuring the parallelism between the motor output shaft and the guide roller shaft head, and further meeting the arrangement requirements of the Z-shaped or W-shaped universal coupling, so that the universal coupling can realize equal-angle-speed transmission. In summary, the two equal-length and diagonally arranged cross beams ensure the installation and positioning accuracy of the driving assembly.

[0127] It should be noted that, please continue to refer to 4, the vertical longitudinal stretching machine group provided in the application further comprises a rubber roller array 13 matched with the guide roller array 12, wherein the rubber roller array 13 is mounted on the guide roller frame 11, and each rubber roller is driven by a pair of air cylinders 14.

[0128] Specifically, please refer to Figure 10 , each rubber roller is driven by a pair of air cylinders, and the pair of air cylinders are arranged on the pair of side plates.

[0129] Figure 10 For the schematic diagram of the motor mounting plate shown in an exemplary embodiment of the application, please refer to Figure 7 In a possible implementation, the motor mounting plate 213 is provided with a lifting hole 2131 away from one side of the day-shaped base 211; the lifting hole 2131 is used for lifting the motor mounting plate 213;

[0130] or,

[0131] The motor mounting plate 213 is provided with a sink or through hole 2132 near one side of the Japanese-shaped base 211; wherein, the sink or through hole 2132 is used for facilitating the disassembly of the longitudinal support beam near the Japanese-shaped base 211.

[0132] Specifically, please refer to Figure 7 , the motor mounting plate 213 is provided with two rows of staggered fastener mounting holes for mounting the motor array 22. Further, in addition to the fastener mounting holes for mounting the motor array 22, the motor mounting plate 213 is also provided with a lifting hole 2131 on the side away from the Japanese-shaped base 211, which can be used for lifting the motor mounting plate 213. When it is necessary to install or replace the motors in the motor array 22, the entire motor mounting plate 213 can be lifted through the lifting hole 2131, so as to facilitate the movement of the motor mounting plate 213 to a suitable working area for operation, preventing safety problems that may occur when operating in a non-operation area.

[0133] Specifically, the specific appearance of the lifting hole 2131 is set according to actual needs, which is not limited in the embodiment. For example, in one possible implementation, the lifting hole can be an oval straight slot.

[0134] It should be noted that, please continue to refer to ​ , in the specific implementation, there are two ways about the motor mounting method: 1) preferably, the motor mounting plate 213 is assembled with the motors, and then the whole is lifted through the lifting hole 2131 on the motor mounting plate, and then connected with the mounting seat on the Japanese-shaped base 211; 2) the motor mounting plate 213 is lifted first, and then connected with the mounting seat on the Japanese-shaped base 211, and then the motors are installed one by one. It should be noted that, when installing the motors, they can be installed one by one from bottom to top, or from top to bottom, or randomly, which is not limited in the embodiment.

[0135] In addition, the motor mounting plate 213 is also provided with a sink or through hole 2132 near the Japanese-shaped base 211. It should be noted that the specific appearance of the sink or through hole 2132 is set according to actual needs, which is not limited in the embodiment. For example, in one possible implementation, the sink or through hole 2132 can be rectangular.

[0136] By providing the sink or through hole 2132 on the side of the motor mounting plate 213 near the Japanese-shaped base 211, the position of the support beam near the Japanese-shaped base 211 can be adjusted through the sink or through hole 2132 without disassembling the inclined support, and the support beam can be disassembled (please refer to ​ , for example, in ​In the shown example, the second support beam 42 can be conveniently removed without removing the inclined support by means of the sink or through hole 2132. In this way, when it is necessary to perform maintenance or replacement of the support beam arranged between the first fixed side plate and the motor mounting plate 213, the operating time can be reduced and the difficulty of the maintenance work can be reduced.

[0137] It should be noted that the specific appearance of the sink or through hole 2132 is set according to actual needs, and in the present embodiment, it is not limited. For example, in one possible implementation, the sink or through hole 2132 can be rectangular.

[0138] On the basis of the above-mentioned embodiments, the present application further provides a film longitudinal stretching machine. The film longitudinal stretching machine provided by the present application will be introduced below.

[0139] Specifically, the film longitudinal stretching machine provided by the present application comprises a plurality of longitudinal stretching machine groups, and at least one longitudinal stretching machine group in the plurality of longitudinal stretching machine groups is any vertical longitudinal stretching machine group provided in the first aspect of the present application.

[0140] It can be understood that the film longitudinal stretching is completed by a plurality of longitudinal stretching machine groups (at least including a cold stretching section, a hot stretching section, a heat setting section, and can further include a cooling section). Different stretching machine groups can select different longitudinal stretching equipment due to different motor selection. The longitudinal stretching machine groups of the cold stretching section and the hot stretching section can use the vertical longitudinal stretching machine group provided by the present application, and the remaining machine groups use other types of vertical longitudinal stretching machine groups, such as using the first type of vertical longitudinal stretching machine group, which comprises a driving assembly mounted on a wall plate through a sleeve.

[0141] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A vertical longitudinal stretching unit, characterized in that, The vertical longitudinal stretching machine set comprises a vertical guide roller assembly, a driving assembly and a transmission assembly; wherein, The vertical guide roller assembly comprises a guide roller frame and an array of guide rollers mounted on the guide roller frame; wherein the array of guide rollers comprises two columns of guide rollers arranged alternately, each column of guide rollers comprising N guide rollers; The driving assembly comprises a mounting frame and an array of motors; wherein the array of motors is mounted on the mounting frame away from the guide roller frame; the array of motors matches the array of guide rollers, and the array of motors comprises two columns of motors arranged alternately, each column of motors comprising N motors; The transmission assembly comprises an array of universal couplings matching the array of guide rollers, each motor transmitting torque to the corresponding guide roller through a universal coupling in the array of universal couplings; wherein the array of motors and the array of guide rollers have a matching relationship in position, which is determined based on the working allowable range of the universal couplings and the preset range of the nip of adjacent two guide rollers; Each column of the guide rollers comprises an even number of guide rollers; wherein, The two columns of guide rollers are staggered in the width direction by a distance equal to n; the two columns of guide rollers are staggered in the height direction by a distance equal to k; the distance between adjacent two guide rollers in each column of guide rollers is equal to 2k; wherein the values of n and k satisfy that the nip range of adjacent two guide rollers is within the preset range; The distance between the first column of motors and the column of guide rollers corresponding to the first column of motors in the width direction is equal to m1, and the distance between the second column of motors and the column of guide rollers corresponding to the second column of motors in the width direction is equal to m2; Each column of motors comprises a first group of motors and a second group of motors, and the first group of motors and the second group of motors are symmetrically arranged about a specified center line; the specified center line is the line of symmetry of the two guide rollers in the middle of the column of guide rollers corresponding to the column of motors; the distance between the target motor closest to the specified center line in each column of motors and the target guide roller corresponding to the target motor in the height direction is a1; the distance between adjacent two motors in each column of motors is equal to B; wherein B=2k+2a1; wherein m1, m2 and a1 are determined based on the working allowable range of the universal couplings; Each column of the guide rollers comprises an odd number of guide rollers; wherein, The two columns of guide rollers are staggered in the width direction by a distance equal to n; the two columns of guide rollers are staggered in the height direction by a distance equal to k; the distance between adjacent two guide rollers in each column of guide rollers is equal to 2k; wherein the values of n and k satisfy that the nip range of adjacent two guide rollers is within the preset range; The distance between the first column of motors and the column of guide rollers corresponding to the first column of motors in the width direction is equal to m1, and the distance between the second column of motors and the column of guide rollers corresponding to the second column of motors in the width direction is equal to m2; The mounting position of the center motor in each column of motors is at the center position, and the distance between the mounting position of the center motor and the mounting position of the guide roller corresponding to the center motor in the height direction is 0; the other motors in each column of motors are symmetrically arranged about the center motor; the distance between adjacent two motors in each column of motors is equal to A; wherein A=2k+A1; m1, m2 and A1 are determined based on the working allowable range of the universal couplings.

2. The vertical longitudinal stretching unit according to claim 1, characterized in that, The guide roller frame comprises a base, a pair of fixed side plates and a pair of movable side plates arranged on the base; the pair of movable side plates can move away from or close to the pair of fixed side plates; one column of guide rollers in the guide roller array is installed on the pair of fixed side plates, and another column of guide rollers in the guide roller array is installed on the pair of movable side plates; The movable stroke of the pair of movable side plates is equal to 2 times the distance in the width direction between one column of guide rollers installed on the pair of movable side plates and the corresponding column of motors of the column of guide rollers.

3. The vertical longitudinal stretching unit according to claim 2, characterized in that, The mounting frame comprises a ratchet-shaped base, a fixed seat, a motor mounting plate and a support structure; wherein, The fixed seat is installed at the inner beam position of the ratchet-shaped base and is used to fix and support the motor mounting plate; The motor mounting plate is fixed on the fixed seat and is used to provide installation space for the motor array; One end of the support structure is connected with the motor mounting plate, and the other end is connected with the ratchet-shaped base; wherein, the support structure is used to support the motor mounting plate and prevent the motor mounting plate from overturning.

4. The vertical longitudinal stretching unit according to claim 3, characterized in that, The support structure comprises a first inclined support and a second inclined support, wherein the first inclined support and the second inclined support are respectively installed on both sides of the width direction of the motor mounting plate; each inclined support is installed on the side of the motor mounting plate where the motor array is not installed; each inclined support and the vertical plane where the motor mounting plate is located and the horizontal plane where the ratchet-shaped base is located form a triangular structure.

5. The vertical longitudinal stretching unit according to claim 4, characterized in that, The vertical longitudinal stretching machine group further comprises a first support beam and a second support beam; wherein, the first support beam and the second support beam are arranged between the first fixed side plate of the pair of fixed side plates close to the driving assembly and the motor mounting plate; the first support beam and the second support beam are equal in length, and the first position where the first support beam is fixedly connected with the first fixed side plate and the second position where the second support beam is fixedly connected with the first fixed side plate are located at the diagonal positions of the first fixed side plate.

6. The vertical longitudinal stretching unit according to claim 5, characterized in that, The side of the motor mounting plate away from the ratchet-shaped base is provided with a lifting hole; wherein, the lifting hole is used to lift the motor mounting plate; Alternatively, The side of the motor mounting plate close to the ratchet-shaped base is provided with a sunk groove or a through hole; wherein, the sunk groove or the through hole is used to facilitate the disassembly of the second support beam close to the ratchet-shaped base.

7. The vertical longitudinal stretching unit according to claim 1, characterized in that, The vertical guide roller assembly further comprises a rubber roller array matched with the guide roller array; wherein, the rubber roller array is installed on the guide roller frame, and each rubber roller is driven by a pair of air cylinders.

8. A film machine for longitudinally stretching a film, characterized by, The film longitudinal stretching machine comprises a plurality of longitudinal stretching machine groups, and at least one longitudinal stretching machine group in the plurality of longitudinal stretching machine groups is the vertical longitudinal stretching machine group according to any one of claims 1-7.

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