A tension control device for a BOPP film stretching mechanism

Abstract

The present invention discloses a tension control device for a BOPP film stretching mechanism, comprising a fixed base, with mounting side panels fixedly mounted on the left and right sides of the top of the fixed base, a limiting strip plate embedded in the top of the mounting side panel, a clamping panel embedded in the side of the mounting side panel, a fixed clamping groove formed inside the clamping panel, and a film removably embedded inside the fixed clamping groove. The present invention provides a fixing assembly, a spring assembly, and a fixing structure, and utilizes the mutual cooperation of the fixing assembly, firstly, under the action of a fixed long plate conical stretching spring, the plate rises upward at a uniform speed until it is lifted to the bottom end surface of the film, and applies pressure on the horizontal line together with a rotating pressure block, thereby clamping the film, and utilizing multiple groups of rotating pressure blocks and fixed side panels to flexibly adjust the fixed position and fixed area of ​​the thin surface of the film, thereby flexibly adjusting the stretching mechanism to flexibly control the film stretching tension.

Description

Technical Field

[0001] The present invention relates to the technical field of BOPP film stretching, and more particularly to a tension control device for a BOPP film stretching mechanism. Background Art

[0002] OPP film is biaxially oriented polypropylene film. The production of BOPP film is to first make the melt of high molecular polypropylene into sheet or thick film through a narrow and long die, and then stretch it in two perpendicular directions simultaneously or step by step in a special stretching machine at a certain temperature and set speed, and then undergo appropriate cooling or heat treatment or special processing to make the film.

[0003] The current tension control device suitable for BOPP film stretching mechanism includes a mounting plate, an electric push rod is fixedly installed on the top of the mounting plate; a control mechanism, the control mechanism includes a synchronization block, a control rod and a synchronization protrusion, the synchronization block is inserted into the interior of the mounting plate, and the control rod is inserted into the side of the synchronization block, the synchronization protrusion is inserted into the interior of the synchronization block, and the push rod of the electric push rod is inserted into the interior of the synchronization block; a positioning fixture, two positioning fixtures are provided, one of which is fixedly installed on the top of the mounting plate, and the other positioning fixture is fixedly installed on the side of the synchronization block.

[0004] However, it still has some shortcomings in actual use. For example, when the current BOPP film stretching machine stretches the film, the contact points and contact area between the mechanism and the film are limited and cannot be adjusted at will. As a result, when the BOPP film is stretched, its tension during stretching is mainly regulated by the driving devices at both ends, and the contact points and contact area between the mechanism and the film are set in a single way, which makes it difficult to regulate the tension during film stretching.

[0005] Therefore, in view of this, the inventor, adhering to many years of rich experience in design, development and actual production in the relevant industry, has researched and improved the existing structure and deficiencies, and provided a tension control device for the BOPP film stretching mechanism, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a tension control device for a BOPP film stretching mechanism, which is equipped with a fixing component, a spring component and a fixing structure, and utilizes the mutual cooperation of the components. First, under the action of the fixed long plate conical stretching spring, it rises upward at a uniform speed until it is lifted to the bottom end surface of the film, and applies pressure on the horizontal line together with the rotating pressure block, thereby clamping the film, and utilizing multiple groups of rotating pressure blocks and fixed side plates to flexibly adjust the fixed position and fixed area of ​​the thin surface of the film, so that the stretching mechanism can flexibly adjust the flexible regulation of the film stretching tension, further improving the practicality and degree of liberalization of the device, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a tension control device for a BOPP film stretching mechanism, comprising a fixed base, with mounting side panels fixedly mounted on the left and right sides of the top of the fixed base, with limit strips embedded in the top of the mounting side panels, with clamping panels embedded in the sides of the mounting side panels, with fixed clamping grooves defined in the interior of the clamping panels, and a film removably embedded in the interior of the fixed clamping grooves, and fixed side panels mounted on the sides of the top of the fixed base;

[0008] The top end of the fixed side plate is rotatably sleeved with a fixing assembly, the bottom end surface of the fixed side plate and below the fixing assembly is installed with a spring assembly, and one side of the fixed side plate is detachably embedded with a fixing structure;

[0009] A fixed turning opening is provided on one side of the fixed side plate, and a fixed embedding circular hole adapted to the fixed structure is provided on the side surface of the fixed side plate.

[0010] In a preferred embodiment, the fixing assembly includes a fixed side plate, one side of which is provided with a fixed circular slot hole, the other side of which is rotatably sleeved with a rotating pressure block, and the interior of the rotating pressure block is rotatably sleeved with a fixed rotating rod.

[0011] In a preferred embodiment, a rotating circular hole is opened inside the fixed side plate, and a connecting column is rotatably sleeved inside the rotating circular hole. The other end of the connecting column is embedded with a fixed rod, and the side of the fixed rod is circumferentially equidistantly provided with rotating handles, and one side of the fixed circular slot is connected to a fixed groove.

[0012] In a preferred embodiment, a fixing block is embedded in the fixing groove, a concave groove is provided on the side of the fixing block, a fixing sleeve is embedded in the connecting column, and an inner cavity is provided in the fixing sleeve.

[0013] In a preferred embodiment, the inner sliding sleeve of the inner cavity is provided with a movable column, the surface of the fixed sleeve is fixedly sleeved with a first fixed ring, the surface of the movable column is fixedly sleeved with a second fixed ring, the sides of the first fixed ring and the second fixed ring are jointly inlaid with a compression spring, and the left and right sides of the fixed block are integrally formed with an inclined arc block.

[0014] In a preferred embodiment, the spring assembly includes a fixed long plate, the left and right ends of the fixed long plate are inlaid with mounting side plates, the top end of the fixed long plate is inlaid with a sponge pad, and the other end of the fixed long plate is inlaid with conical tension springs equidistantly from left to right.

[0015] In a preferred embodiment, the fixing structure includes a connecting side plate, a fixing support plate is fixedly installed on the side surface of the connecting side plate, and an embedded cylinder is inlaid and installed on the side surface of the connecting side plate.

[0016] In a preferred embodiment, the surface of the inclined arc block is smooth, and the bottom end surface of the inclined arc block is tightly fitted with the inner wall surface of the fixed circular groove hole. There are two fixed blocks, and the two fixed blocks are respectively located at the upper and lower ends of the fixed circular groove hole, and the interval angle range of the two fixed blocks is in the range of forty-five degrees to thirty-five degrees. The bottom end of the fixed rotating rod is fixedly connected to the connecting column.

[0017] In a preferred embodiment, the other end of the movable column is configured as a semicircular structure, the movable column and the interior of the fixed sleeve can slide and retract relative to each other, the surface of the movable column is evenly coated with a layer of lubricating grease, and the movable column and the inclined arc block are made of alloy material.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The present invention provides a fixing assembly, a spring assembly, and a fixing structure. By utilizing the mutual cooperation of these components, the long plate conical tension spring is first fixed and rises upward at a uniform speed until it reaches the bottom end surface of the film. It then applies pressure horizontally together with the rotating pressure block, thereby clamping the film. Multiple sets of rotating pressure blocks and fixed side plates are used to flexibly adjust the fixed position and fixed area of ​​the thin surface of the film, thereby flexibly adjusting the stretching tension of the film by the stretching mechanism, further improving the practicality and degree of freedom of the device.

[0020] 2. The present invention provides a fixing assembly and utilizes a 45-degree angle between the fixing blocks. When the connecting column drives the movable column to move back and forth between the two fixing blocks, the fixing block on one side can fix the movable column in mid-air to prevent it from moving downward, while the fixing block on the other side can fix the movable column as a whole, so that the bottom end of the fixed pressure block on one side maintains horizontal contact with the top surface of the film, thereby ensuring that the fixed pressure block is in a secure state during operation or when idle, ensuring that it will not loosen, thereby increasing the stability of the device structure.

[0021] 3. The present invention provides a movable column, a fixed sleeve, two fixed rings and a compression spring, and utilizes the mutual cooperation of the movable column and the fixed sleeve, and utilizes the relative sliding and contraction between the movable column and the fixed sleeve, so that the movable column can move along the inner wall surface of the fixed circular groove hole, and then when it moves to the surface of the inclined arc block, it contracts under the action of the compression spring, so that it can smoothly slide into the concave groove inside the fixed block and be fixed, further improving the smoothness of the equipment during use, avoiding the problem of the movable column getting stuck during fixation, and further reducing the degree of failure of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional assembly structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the side structure of the fixed side plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall structure of the mounting side panel of the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional assembly structure of the spring assembly of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the fixed structure of the present invention;

[0029] Figure 8 It is a schematic diagram of the three-dimensional assembly structure of the fixing component of the present invention.

[0030] The accompanying drawings are marked as follows: 1. fixed base; 2. mounting side panel; 3. limiting strip; 4. clamping panel; 5. fixed clamping groove; 6. film; 7. fixed side panel; 8. fixed assembly; 9. spring assembly; 10. fixed structure; 11. fixed turn mouth; 12. fixed embedded circular hole; 81. fixed side panel; 82. fixed circular slot hole; 83. rotating pressure block; 84. fixed rotating rod; 85. rotating circular hole; 86. connecting column; 87. fixed rod; 88. rotating Turn handle; 89, fixing groove; 891, fixing block; 892, concave groove; 893, fixing sleeve; 894, inner cavity; 895, moving column; 896, first fixing ring; 897, compression spring; 898, second fixing ring; 899, inclined arc block; 91, fixing long plate; 92, installing side plate; 93, sponge pad; 94, conical tension spring; 101, connecting side plate; 102, fixing support plate; 103, embedded cylinder. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] As attached Figure 1 To the attached Figure 8 The tension control device of a BOPP film stretching mechanism shown in the figure includes a fixed base 1, with mounting side panels 2 fixedly installed on the left and right sides of the top of the fixed base 1, and a limit strip 3 embedded in the top of the mounting side panel 2. A clamping panel 4 is embedded in the side of the mounting side panel 2, and a fixed clamping groove 5 is formed inside the clamping panel 4. A film 6 is removably embedded in the fixed clamping groove 5. Fixed side panels 7 are installed on the side of the top of the fixed base 1;

[0033] The top end of the fixed side plate 7 is rotatably sleeved with a fixing assembly 8, the bottom end surface of the fixed side plate 7 and below the fixing assembly 8 is installed with a spring assembly 9, and one side of the fixed side plate 7 is detachably embedded with a fixing structure 10;

[0034] A fixed turning opening 11 is provided on one side of the fixed side plate 7 , and a fixed embedding circular hole 12 adapted to the fixed structure 10 is provided on the side surface of the fixed side plate 7 .

[0035] The fixing assembly 8 includes a fixing side plate 81, one side of which is provided with a fixing circular slot hole 82, and the other side of the fixing side plate 81 is rotatably sleeved with a rotating pressure block 83, and the internal rotation sleeve of the rotating pressure block 83 is provided with a fixing rotating rod 84; the interior of the fixing side plate 81 is provided with a rotating circular hole 85, and the internal rotation sleeve of the rotating circular hole 85 is provided with a connecting column 86, and the other end of the connecting column 86 is embedded and connected with a fixing rod 87, and the side surface of the fixing rod 87 is equidistantly divided with a rotating handle 88, and one side of the fixing circular slot hole 82 is connected with a fixing groove 89; the interior of the fixing groove 89 is embedded with a fixing block 891, and the side surface of the fixing block 891 is provided with a concave groove 892, and the interior of the connecting column 86 is embedded with a fixing sleeve 893, and the interior of the fixing sleeve 893 is provided with an inner cavity 894; the inner cavity 894 The internal sliding sleeve is provided with a moving column 895, the surface of the fixed sleeve 893 is fixedly sleeved with a first fixed ring 896, the surface of the moving column 895 is fixedly sleeved with a second fixed ring 898, the sides of the first fixed ring 896 and the second fixed ring 898 are jointly inlaid with a compression spring 897, and the left and right sides of the fixed block 891 are integrally formed with an inclined arc block 899; the spring assembly 9 includes a fixed long plate 91, the left and right ends of the fixed long plate 91 are inlaid with mounting side plates 92, the top of the fixed long plate 91 is inlaid with a sponge pad 93, and the other end of the fixed long plate 91 is inlaid with conical tension springs 94 equidistantly from left to right; the fixed structure 10 includes a connecting side plate 101, the side of the connecting side plate 101 is fixedly installed with a fixed support plate 102, and the side of the connecting side plate 101 is inlaid with an embedded cylinder 103.

[0036] For details, please refer to the attached manual Figure 3-8 The surface of the inclined arc block 899 is smooth, and the bottom end surface of the inclined arc block 899 is tightly fitted with the inner wall surface of the fixed circular groove hole 82. There are two fixed blocks 891, and the two fixed blocks 891 are respectively located at the upper and lower ends of the fixed circular groove hole 82, and the interval angle range of the two fixed blocks 891 is in the range of forty-five degrees to thirty-five degrees. The bottom end of the fixed rotating rod 84 is fixedly connected to the connecting column 86.

[0037] The specific implementation method is as follows: the angle between the fixed blocks 891 is forty-five degrees, so that when the connecting column 86 drives the movable column 895 to move back and forth and be fixed between the two fixed blocks 891, the fixed block 891 on one side can fix the movable column 895 in the air to prevent it from moving downward, and the fixed block 891 on the other side can fix the movable column 895 as a whole, so that the bottom end of the rotating pressure block 83 on one side maintains contact with the top surface of the film 6 on the horizontal plane.

[0038] For details, please refer to the attached manual Figure 5-8 The other end of the movable column 895 is set to a semicircular structure. The movable column 895 and the interior of the fixed sleeve 893 can slide and retract with each other. The surface of the movable column 895 is evenly coated with a layer of lubricating grease. The movable column 895 and the inclined arc block 899 are made of alloy material.

[0039] The specific implementation method is: utilizing the relative sliding and contraction between the movable column 895 and the fixed sleeve 893, so that it can move along the inner wall surface of the concave groove 892, and then contract when moving to the surface of the inclined arc block 899, so as to smoothly slide into the concave groove 892 inside the fixed block 891 and be fixed. The movable column 895 and the inclined arc block 899 are both made of alloy, so that they have the advantages of several component metals, have higher mechanical strength than a single metal, are more corrosion-resistant, lighter, harder, tougher, and have better fatigue resistance.

[0040] Working principle of the present invention:

[0041] Step 1: First, the operator assembles the various components of the device normally, and then starts the device normally.

[0042] The second step: First, the operator holds the fixed rod 87, and then rotates the rotating handle 88 on the fixed rod 87, so that the connecting column 86 at one end drives the fixed rotating rod 84 to rotate synchronously in the fixed side plate 81. At the same time, the movable column 895 on one side of the connecting column 86 moves along the inner wall surface of the concave groove 892, and then moves to the surface of the inclined arc block 899. The expansion and contraction function of the compression spring 897 contracts, so that it slides smoothly into the concave groove 892 inside the fixed block 891 and is fixed. At the same time, the angle between the fixed blocks 891 is forty-five degrees, so that the connecting column 86 drives the movable column 895 to move back and forth between the two fixed blocks 891. During dynamic fixation, the fixed block 891 can fix the movable column 895 as a whole, so that the bottom end of the rotating pressure block 83 on one side maintains contact with the top surface of the film 6 on the horizontal plane. At this time, the connecting side plate 101 drives the integral embedded cylinder 103 to be taken out from the fixed embedded circular hole 12 in the fixed side plate 7. At this time, the fixed long plate 91 is freed from the restriction of the fixed support plate 102, and under the action of the conical tension spring 94 at its bottom end, it rises upward at a uniform speed until it is lifted to the bottom end surface of the film 6, and exerts pressure on the horizontal line together with the rotating pressure block 83, thereby clamping the film 6, and using multiple groups of rotating pressure blocks 83 and fixed long plates 91 to flexibly adjust the fixed position and fixed area of ​​the thin surface of the film 6.

[0043] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aging and severely worn parts inside the device.

[0044] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0045] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0046] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tension control device for a BOPP film stretching mechanism, comprising a fixed base (1), wherein mounting side panels (2) are fixedly mounted on the left and right sides of the top of the fixed base (1), a limiting strip (3) is embedded in the top of the mounting side panel (2), and a clamping panel (4) is embedded in the side of the mounting side panel (2), characterized in that: A fixed clamping groove (5) is provided inside the clamping panel (4), a film (6) is detachably embedded inside the fixed clamping groove (5), and a fixed side panel (7) is installed on the top side of the fixed base (1); The top end of the fixed side plate (7) is rotatably sleeved with a fixing assembly (8), the bottom end surface of the fixed side plate (7) and located below the fixing assembly (8) is provided with a spring assembly (9), and one side of the fixed side plate (7) is detachably embedded with a fixing structure (10); A fixed turning opening (11) is provided on one side of the fixed side plate (7), and a fixed embedding circular hole (12) adapted to the fixed structure (10) is provided on the side surface of the fixed side plate (7); The fixing assembly (8) includes a fixed side plate (81), a fixed circular slot (82) is provided on one side of the fixed side plate (81), a rotating pressing block (83) is rotatably sleeved on the other side of the fixed side plate (81), a fixed rotating rod (84) is rotatably sleeved inside the rotating pressing block (83), a rotating circular hole (85) is provided inside the fixed side plate (81), a connecting column (86) is rotatably sleeved inside the rotating circular hole (85), a fixing rod (87) is embedded and connected at the other end of the connecting column (86), and a rotating handle (88) is evenly spaced and evenly distributed on the side surface of the fixing rod (87); One side of the fixed circular slot hole (82) is connected to a fixed groove (89), a fixed block (891) is embedded and installed inside the fixed groove (89), a concave groove (892) is provided on the side of the fixed block (891), a fixed sleeve (893) is embedded inside the connecting column (86), an inner cavity (894) is provided inside the fixed sleeve (893), a movable column (895) is slidably provided inside the inner cavity (894), a first fixed ring (896) is fixedly sleeved on the surface of the fixed sleeve (893), a second fixed ring (898) is fixedly sleeved on the surface of the movable column (895), a compression spring (897) is embedded and installed on the sides of the first fixed ring (896) and the second fixed ring (898), and an inclined arc block (899) is integrally formed on the left and right side surfaces of the fixed block (891).

2. The tension control device of a BOPP film stretching mechanism according to claim 1, characterized in that: The spring assembly (9) comprises a fixed long plate (91), the left and right ends of the fixed long plate (91) are both inlaid with mounting side plates (92), the top end of the fixed long plate (91) is inlaid with a sponge pad (93), and the other end of the fixed long plate (91) is inlaid with conical tension springs (94) at equal intervals from left to right.

3. The tension control device of a BOPP film stretching mechanism according to claim 1, characterized in that: The fixed structure (10) comprises a connecting side plate (101), a fixed support plate (102) is fixedly mounted on the side surface of the connecting side plate (101), and an embedded cylinder (103) is inlaid and mounted on the side surface of the connecting side plate (101).

4. The tension control device for a BOPP film stretching mechanism according to claim 1, characterized in that: The surface of the inclined arc block (899) is smooth, and the bottom end surface of the inclined arc block (899) is tightly fitted with the inner wall surface of the fixed circular slot hole (82). The number of the fixed blocks (891) is two, and the two fixed blocks (891) are respectively located at the upper and lower ends of the fixed circular slot hole (82), and the interval angle range of the two fixed blocks (891) is in the range of forty-five degrees to thirty-five degrees. The bottom end of the fixed rotating rod (84) is fixedly connected to the connecting column (86).

5. The tension control device for a BOPP film stretching mechanism according to claim 1, characterized in that: The other end of the movable column (895) is configured as a semicircular structure. The movable column (895) and the interior of the fixed sleeve (893) can slide and retract relative to each other. The surface of the movable column (895) is evenly coated with a layer of lubricating grease. The movable column (895) and the inclined arc block (899) are made entirely of alloy material.

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