A transverse amplitude modulation device and a film transverse stretching device applying the same

Abstract

The present invention discloses a lateral amplitude modulation device and a film transverse stretching device applying the device. Among them, a lateral amplitude modulation device includes a bracket and a chain clip assembly. A lead screw is rotatably connected to the bracket and extends in the left-right direction. A protective cover is provided above the lead screw to shield the upper part of the lead screw. The protective cover is fixedly connected to the bracket. The device further includes a slider which is in threaded cooperation with the lead screw and is slidably connected to the protective cover or the bracket. The chain clip assembly is arranged on the slider. Also disclosed is a film transverse stretching device which includes the lateral amplitude modulation device. The present invention provides a lateral amplitude modulation device and a film transverse stretching device applying the device that can prevent waste film from falling into the lead screw mechanism.

Description

Technical Field

[0001] The present invention relates to the field of film transverse stretching, in particular to a transverse amplitude modulation device and a film transverse stretching device applying the device. Background Art

[0002] In this field, the transverse stretching of a film generally refers to stretching along the width direction of the film. During the transverse stretching of the film, there may be a phenomenon that the film clamped by the chain clip melts due to the overhigh temperature of the chain clip and failure to dissipate heat in time, or the film is broken due to an excessive stretching rate per unit time of the film, etc., resulting in waste film. In traditional devices for stretching films, a lead screw mechanism is generally used for transverse amplitude modulation. For smooth operation, lubricants such as grease are generally added to the lead screw mechanism for lubrication. If these waste films fall into the lead screw mechanism, it will affect the service life of the lubricant and increase the cost required for production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to solve the above-mentioned problems and provide a transverse amplitude modulation device that can prevent waste film from falling into the lead screw mechanism.

[0004] The solution of the present invention to solve its technical problem is:

[0005] A transverse amplitude modulation device, including a bracket and a chain clip assembly. A lead screw is rotatably connected to the bracket. The lead screw extends in the left - right direction. A protective cover is provided above the lead screw. The protective cover shields the upper part of the lead screw. The protective cover is fixedly connected to the bracket. It further includes a slider. The slider is in threaded cooperation with the lead screw. The slider is slidably connected to the protective cover or the bracket. The chain clip assembly is arranged on the slider.

[0006] As a further improvement of the above - mentioned technical solution, the protective cover includes two mutually vertical plates, a connecting plate connecting the tops of the two vertical plates, and fixing plates extending away from each other from the lower ends of the two vertical plates, so that the fixing plates, the connecting plate, and the vertical plates together form an Ω shape. The vertical plates, the connecting plate, and the fixing plates extend along the length direction of the lead screw. The lead screw is arranged between the two vertical plates and below the connecting plate.

[0007] As a further improvement of the above - mentioned technical solution, the slider is slidably connected to the top surface of the fixing plate.

[0008] As a further improvement of the above technical solution, the slider includes a nut, a base plate, and a support frame. The nut is connected to the screw rod, the base plate is arranged below the screw rod, the support frame is fixedly connected to the base plate, a pulley is connected to the support frame via a rotating shaft, the pulley is slidably connected to the top surface of the fixed plate, and the support frame is fixedly connected to the chain clamp assembly.

[0009] As a further improvement of the above technical solution, the support frame includes a platform fixedly connected to the chain clamp assembly and a support plate fixedly connected to the platform, the platform is arranged above the protective cover, the two support plates are respectively fixedly connected to the base plate, two support plates are arranged, and the two support plates are respectively arranged on the front and rear sides of the protective cover, the two support plates are respectively connected to pulleys through rotating shafts, and the pulleys are slidably connected to the fixed plates.

[0010] As a further improvement of the above technical solution, the slider includes a nut, a base plate, and a support frame. The nut is connected to the screw rod, the base plate is arranged below the screw rod, the support frame is fixedly connected to the base plate, and a pulley is connected to the support frame through a rotating shaft, and the pulley is slidably connected to the bracket or protective cover.

[0011] As a further improvement of the above technical solution, the screw rod is provided with a left-handed thread and a right-handed thread, and the left-handed thread and the right-handed thread are respectively matched with a slider, and each slider is provided with a chain clip assembly.

[0012] As a further improvement of the above technical solution, two screw rods are provided, the two screw rods are coaxially arranged, the two screw rods are connected through a first transmission shaft, one screw rod is provided with a left-handed thread, and the other screw rod is provided with a right-handed thread, the left-handed thread is connected to a slider, and the right-handed thread is connected to a slider, and each slider is provided with a chain clip assembly.

[0013] As a further improvement of the above technical solution, a support bearing seat is provided on the bracket, and the screw rod is rotatably connected to the support bearing seat.

[0014] The present invention also provides a film transverse pulling device, including a shell, and also includes a plurality of transverse amplitude modulation devices arranged in the front-to-back direction. The bracket is arranged in the shell, and a motor is provided on the shell. The motor drives the screw rod, and the screw rod is coaxially connected to a meter. The meter is used to measure the number of rotations of the screw rod.

[0015] The beneficial effects of the present invention are as follows: The lead screw is connected to the slider through a thread, and the slider is slidably connected to the protective cover or the bracket, so that the slider and the lead screw form a lead screw-nut kinematic pair. The user can adjust and rotate the lead screw to make the lead screw rotate and drive the slider to move along the length direction of the lead screw. Furthermore, the chain clip assembly is used to clamp the film, realizing the lateral stretching of the film. During the stretching process, the protective cover is arranged above the lead screw and blocks the lead screw, thus effectively preventing the waste film falling from the chain clip from affecting the normal use of the lead screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0017] Figure 1 is the front structural view of the present invention;

[0018] Figure 2 is of the present invention Figure 1 schematic diagram of the lead screw, nut, and bottom plate in the A-A view direction in

[0019] Figure 3 is a partial schematic diagram of the protective cover, pulley, and support plate of the present invention;

[0020] Figure 4 is a schematic side view of the film stretching device according to an embodiment of the present invention;

[0021] Figure 5 is a schematic side view of the film stretching device according to an embodiment of the present invention;

[0022] Figure 6 is a schematic diagram of the motor, counter, and second transmission shaft in the film stretching device of the present invention;

[0023] Figure 7 is in the present invention Figure 5 magnified view of B in

[0024] Figure 8 is in the present invention Figure 4 magnified view of C in

[0025] In the accompanying drawings: 1 - support, 2 - chain clip assembly, 3 - protective cover, 31 - vertical plate, 32 - connecting plate, 33 - fixing plate, 4 - slider, 41 - nut, 42 - bottom plate, 43 - support frame, 431 - platform, 432 - support plate, 5 - pulley, 6 - first transmission shaft, 7 - bearing seat, 80 - housing, 81 - motor, 82 - length counter, 83 - second transmission shaft, 9 - lead screw. Detailed implementation manners

[0026] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with embodiments and the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer only to the direct connection of components, but refer to the formation of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations. The various technical features in the present invention can be combined with each other without conflict.

[0027] Referring to Figures 1 to 8 , a lateral amplitude modulation device, including a support 1 and a chain clip assembly 2. A lead screw 9 is rotatably connected to the support 1. The lead screw 9 extends in the left-right direction. A protective cover 3 is provided above the lead screw 9. The protective cover 3 shields the upper part of the lead screw 9. The protective cover 3 is fixedly connected to the support 1. It further includes a slider 4. The slider 4 is in threaded cooperation with the lead screw 9. The slider 4 is slidably connected to the protective cover 3 or the support 1. The chain clip assembly 2 is arranged on the slider 4.

[0028] From the above, the lead screw 9 is connected to the slider 4 by threads. The slider 4 is slidably connected to the protective cover 3 or the support 1, so that the slider 4 and the lead screw 9 form a lead screw-nut 41 kinematic pair. The user can adjust and rotate the lead screw 9 to make the lead screw 9 rotate and drive the slider 4 to move along the length direction of the lead screw 9. Then, the chain clip assembly 2 is used to clamp the film, realizing the lateral stretching of the film. During the stretching process, the protective cover 3 is arranged above the lead screw 9 and shields the lead screw 9, effectively preventing the waste film falling from the chain clip from affecting the normal use of the lead screw 9.

[0029] As a further preferred embodiment, the protective cover 3 includes two vertical plates 31, a connecting plate 32 connecting the tops of the two vertical plates 31, and fixing plates 33 extending away from each other from the lower ends of the two vertical plates 31, so that the fixing plates 33, the connecting plate 32, and the vertical plates 31 together form an Ω shape. The vertical plates 31, the connecting plate 32, and the fixing plates 33 extend along the length direction of the lead screw 9. The lead screw 9 is arranged between the two vertical plates 31 and below the connecting plate 32. This structure is simple and easy to set up. Through the setting of this structure, the protective cover 3 can cover the lead screw 9.

[0030] As a further preferred embodiment, the slider 4 is slidably connected to the top surface of the fixing plate 33. This structure is simple and compact. Through the setting of this structure, the protective cover 3 can be pressed downwards. In addition, the floor space occupied by the bracket 1 can be saved.

[0031] In some embodiments, the support frame 43 includes a platform 431 fixedly connecting the chain clip assembly 2 and a support plate 432 fixedly connecting the platform 431. The platform 431 is arranged above the protective cover 3. The two support plates 432 are respectively fixedly connected to the bottom plate 42. There are two support plates 432, and the two support plates 432 are respectively arranged on the front and rear sides of the protective cover 3. The two support plates 432 are respectively connected to the pulley 5 through a rotating shaft. The pulley 5 is slidably connected to the fixing plate 33. This structure is simple and easy to set up. Through the setting of this structure, the chain clip assembly 2 can be supported and fixed by the platform 431, and the installation is convenient. Through the setting of the support plate 432, the stable support of the platform 431 can be realized.

[0032] In some embodiments, the slider 4 includes a nut 41, a bottom plate 42, and a support frame 43. The nut 41 is in threaded connection with the lead screw 9. The bottom plate 42 is arranged below the lead screw 9. The support frame 43 is fixedly connected to the bottom plate 42. A pulley 5 is connected to the support frame 43 through a rotating shaft. The pulley 5 is slidably connected to the top surface of the fixing plate 33. The support frame 43 is fixedly connected to the chain clip assembly 2. This structure is simple and easy to set up. When in use, the nut 41 is used for threaded cooperation with the lead screw 9, and the bottom plate 42 is arranged below the lead screw 9, thereby providing an installation space for installing the protective cover 3. In addition, the pulley 5 presses down the fixing plate 33 and is slidably connected to the fixing plate 33, and its structure is compact.

[0033] In some embodiments, the slider 4 includes a nut 41, a bottom plate 42, and a support frame 43. The nut 41 is connected to the screw rod 9, the bottom plate 42 is arranged below the screw rod 9, the support frame 43 is fixedly connected to the bottom plate 42, and a pulley 5 is connected to the support frame 43 through a rotating shaft, and the pulley 5 is slidably connected to the bracket 1 or the protective cover 3. The structure is simple and convenient to set up. The nut 41 is used to threadably match the screw rod 9, and the bottom plate 42 is arranged below the screw rod 9, thereby providing an installation space for installing the protective cover 3.

[0034] In some embodiments, the screw rod 9 is provided with a left-handed thread and a right-handed thread, and the left-handed thread and the right-handed thread are respectively matched with a slider 4, and each slider 4 is provided with a chain clip assembly 2. The structure is simple and convenient to set up, and the structure can be used to stretch some films with smaller widths. If the processing cost and other factors are not considered at that time, the user can also use a longer screw rod 9 for transmission. By setting the left-handed thread and the right-handed thread, the sliders 4 respectively matched with the left-handed thread and the right-handed thread move toward each other or away from each other when the screw rod 9 rotates.

[0035] In some other embodiments, two screw rods 9 are provided, the two screw rods 9 are coaxially arranged, the two screw rods 9 are connected by the first transmission shaft 6, a left-handed thread is provided on one screw rod 9, and a right-handed thread is provided on the other screw rod 9, the left-handed thread is connected with one slider 4, the right-handed thread is connected with one slider 4, and each slider 4 is provided with a chain clip assembly 2. This structure is simple and convenient to set up, and this structure can be used to perform transverse stretching on some wider films, and the two screw rods 9 are driven to rotate synchronously and coaxially through the first transmission shaft 6. In addition, the two screw rods 9 are respectively provided with left-handed threads and right-handed threads, so that the sliders 4 respectively matched with the left-handed threads and the right-handed threads can move toward each other or move away from each other when the screw rod 9 rotates.

[0036] As a further preferred embodiment, the bracket 1 is provided with a support bearing seat 7, and the screw rod 9 is rotatably connected to the support bearing seat 7. The structure is simple and convenient to set up. Through the setting of the structure, on the one hand, the screw rod 9 can be supported, and on the other hand, the rotation of the screw rod 9 is relatively smooth.

[0037] The present invention also provides a film transverse stretching device, which includes a housing 80 and also includes a plurality of the above-described transverse amplitude modulation devices arranged in the front-rear direction. The bracket 1 is disposed within the housing 80. A motor 81 is provided on the housing 80. The motor 81 is drivingly connected to the lead screw 9. The lead screw 9 is coaxially drivingly connected to a length counter 82. The length counter 82 is used to measure the number of turns of rotation of the lead screw 9. In use, a preheater, a stretching zone, a cooling zone, and a shaping zone are provided within the housing. The user can adopt different sizes of the transverse amplitude modulation devices according to the different temperatures of each zone.

[0038] In some embodiments, the motor 81 drives a second transmission shaft 83 through a chain drive. The second transmission shaft 83 is coaxially drivingly connected to the lead screw 9 and the length counter 82.

[0039] The above has specifically described the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A lateral amplitude modulation device, comprising a bracket (1) and a chain clip assembly (2), characterized in that, The invention is characterized in that: a screw rod (9) is rotatably connected to the bracket (1), the screw rod (9) extends in the left-right direction, a protective cover (3) is arranged above the screw rod (9), the protective cover (3) blocks the upper part of the screw rod (9), the protective cover (3) is fixedly connected to the bracket (1), and further comprises a slider (4), the slider (4) is threadably engaged with the screw rod (9), the slider (4) is slidably connected to the protective cover (3) or the bracket (1), and the chain clip assembly (2) is arranged on the slider (4); The protective cover (3) comprises two mutually vertical plates (31), a connecting plate (32) connecting the top ends of the two vertical plates (31), and a fixing plate (33) extending from the lower ends of the two vertical plates (31) in opposite directions to each other, so that the fixing plate (33), the connecting plate (32) and the vertical plate (31) together form an Ω shape, the vertical plate (31), the connecting plate (32) and the fixing plate (33) extend along the length direction of the screw rod (9), the screw rod (9) is arranged between the two vertical plates (31), and the screw rod (9) is arranged below the connecting plate (32); The slider (4) comprises a nut (41), a bottom plate (42), and a support frame (43); the nut (41) is connected to the screw rod (9); the bottom plate (42) is arranged below the screw rod (9); the support frame (43) is fixedly connected to the bottom plate (42); a pulley (5) is connected to the support frame (43) via a rotating shaft; the pulley (5) is slidably connected to the top surface of the fixed plate (33); and the support frame (43) is fixedly connected to the chain clip assembly (2); The screw rod (9) is provided with a left-handed thread and a right-handed thread, and the left-handed thread and the right-handed thread are respectively matched with a slider (4), and each slider (4) is provided with a chain clamp assembly (2); two screw rods (9) are provided, and the two screw rods (9) are coaxially arranged, and the two screw rods (9) are connected by a first transmission shaft (6), one screw rod (9) is provided with a left-handed thread, and the other screw rod (9) is provided with a right-handed thread, the left-handed thread is matched with a slider (4), and the right-handed thread is matched with a slider (4), and each slider (4) is provided with a chain clamp assembly (2).

2. The lateral amplitude modulation device according to claim 1, characterized in that The sliding block (4) is slidably connected to the top surface of the fixing plate (33).

3. The lateral amplitude modulation device according to claim 2, wherein The support frame (43) comprises a platform (431) fixedly connected to the chain clip assembly (2), and a support plate (432) fixedly connected to the platform (431); the platform (431) is arranged above the protective cover (3); two support plates (432) are respectively fixedly connected to the bottom plate (42); two support plates (432) are arranged, and the two support plates (432) are respectively arranged at the front and rear sides of the protective cover (3); the two support plates (432) are respectively connected to pulleys (5) through rotating shafts, and the pulleys (5) are slidably connected to the fixed plate (33).

4. The lateral amplitude modulation device according to claim 3, wherein The slider (4) comprises a nut (41), a base plate (42), and a support frame (43); the nut (41) is connected to the screw rod (9); the base plate (42) is arranged below the screw rod (9); the support frame (43) is fixedly connected to the base plate (42); a pulley (5) is connected to the support frame (43) via a rotating shaft; and the pulley (5) is slidably connected to the bracket (1) or the protective cover (3).

5. The lateral amplitude modulation device according to claim 4, characterized in that, The support (1) is provided with a support bearing seat (7), and the screw rod (9) is rotatably connected to the support bearing seat (7).

6. A film transverse stretching device, comprising a housing (80), characterized in that: It also includes a plurality of transverse amplitude modulation devices as described in any one of claims 1 to 5 arranged in the front-to-back direction, the bracket (1) is arranged in the housing (80), the housing (80) is provided with a motor (81), the motor (81) is driven and connected to the screw rod (9), the screw rod (9) is coaxially connected to a meter (82), and the meter (82) is used to measure the number of rotations of the screw rod (9).

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