Amplitude adjusting device of transverse drawing machine

Abstract

The utility model discloses an amplitude modulation device of a transverse stretching machine, which comprises a transverse stretching machine frame and further comprises two guide rail fixing seats which are transversely and independently arranged, each guide rail fixing seat is arranged on the transverse stretching machine frame in a sliding mode, and each guide rail fixing seat is connected with an amplitude modulation mechanism. And each amplitude modulation mechanism independently drives the guide rail fixing seat to move or synchronously drives the guide rail fixing seat to move through a synchronizing mechanism. According to the scheme, when a rod piece such as a lead screw in an amplitude modulation mechanism of the guide rail fixing seat is heated to expand, the two guide rail fixing seats have large spaces to move left and right so as to adapt to the deformation amount of thermal expansion, and it is guaranteed that the structure cannot be deformed or damaged due to stress caused by thermal expansion; preferably, the two amplitude modulation mechanisms can be synchronously controlled, so that the two guide rail fixing seats are symmetrically close to or far away from each other, and operation is convenient; according to the scheme, the adaptability to temperature changes is better, the service life is longer, and a higher-temperature treatment process can be achieved easily.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the transverse puller equipment technical field, concretely relates to a kind of amplitude modulation device of transverse puller. BACKGROUND

[0002] Transverse puller is also called transverse stretching machine and stenter, which is a kind of equipment used for stretching film in the process of film production and processing, and has an amplitude modulation mechanism to control the stretching amplitude of the film. The prior art scheme, for example, Chinese invention patent with application publication number CN117818025A, has two slide tables (guide rail fixed seat) on both sides, which are equivalent to being synchronously controlled on a lead screw, and then the distance between the guide rails is adjusted by moving the position of the guide rail fixed seat to achieve the adjustment of the stretching amplitude. However, the inventor has found through further research that since the amplitude modulation device is located in the heating chamber, the length of the lead screw will increase after being heated and expanded, which may cause the guide rail fixed seat to lose the adjustment ability and the structure to be deformed and damaged. Therefore, a new type of amplitude modulation device needs to be designed. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide an amplitude modulation device of transverse puller, which solves the problem of failure caused by thermal deformation in the prior art, and realizes synchronous control, easy adjustment, better adaptation to temperature changes and improved equipment operation stability.

[0004] According to the technical scheme of the utility model, the utility model provides an amplitude modulation device of transverse puller, which comprises a transverse puller frame, two laterally independent guide rail fixed seats, each guide rail fixed seat being slidably arranged on the transverse puller frame, and an amplitude modulation mechanism connected to each guide rail fixed seat. Each amplitude modulation mechanism independently drives the guide rail fixed seat to move or synchronously drives the guide rail fixed seat to move through a synchronous mechanism.

[0005] Further, the amplitude modulation mechanism comprises an amplitude modulation lead screw connected to the guide rail fixed seat and an amplitude modulation nut connected to the amplitude modulation lead screw, and the amplitude modulation nut is connected to a driving control device.

[0006] Further, the transverse puller frame comprises a laterally arranged amplitude modulation rail frame, which is a hollow bracket structure, and the synchronous mechanism of the amplitude modulation mechanism and / or the amplitude modulation nut and / or the amplitude modulation lead screw are arranged in the interior of the amplitude modulation rail frame.

[0007] Further, the transverse puller has a heat preservation box, and the guide rail fixed seat is located in the heat preservation box. The outer wall of the heat preservation box is a heat preservation layer structure, which comprises an inner side wall plate, an outer side wall plate and a hollow cavity between the inner side wall plate and the outer side wall plate. The amplitude modulation nut is located in the hollow cavity of the heat preservation layer structure or is arranged outside the heat preservation box.

[0008] Preferably, the synchronous mechanism of the amplitude modulation mechanism is arranged inside the amplitude modulation track frame.

[0009] Further, the amplitude modulation screw is connected with the inner side wall plate through a positioning partition piece, and the positioning partition piece is sleeved on the amplitude modulation screw; wear-resistant and high-temperature-resistant inner sleeve rings are arranged at both ends inside the positioning partition piece and are sleeved on the amplitude modulation screw.

[0010] Further, two sections of amplitude modulation tracks are arranged on the horizontal pulling machine frame, and the two sections of amplitude modulation tracks have a spacing distance therebetween, and the two guide rail fixing seats are respectively in sliding connection with the two sections of amplitude modulation tracks.

[0011] Preferably, the synchronous mechanism of the amplitude modulation mechanism is arranged inside the amplitude modulation track frame.

[0012] Further, the synchronous mechanism of the amplitude modulation mechanism is an amplitude modulation synchronous shaft, and the amplitude modulation synchronous shaft is connected with an amplitude modulation driving motor and / or an amplitude modulation hand wheel.

[0013] Further, the amplitude modulation synchronous shaft is further connected with a position display device and / or an automatic control device.

[0014] Compared with the prior art, the amplitude modulation device of the horizontal pulling machine has the following beneficial technical effects:

[0015] In the amplitude modulation device of the horizontal pulling machine, when a rod member such as a screw in the amplitude modulation mechanism of the guide rail fixing seat is heated and expanded, since the two guide rail fixing seats are not connected with each other and the amplitude modulation mechanism and the preferred amplitude modulation track are also arranged independently of each other, the two guide rail fixing seats have a larger space for moving left and right to adapt to the deformation amount of thermal expansion, so that the structure is prevented from being deformed and damaged due to thermal expansion; meanwhile, the two amplitude modulation mechanisms can be synchronously controlled, so that the two guide rail fixing seats are symmetrically close to or far away from each other, which is convenient for operation; the synchronous mechanism is arranged in the amplitude modulation track frame of the horizontal pulling machine frame, so that a certain temperature is blocked, and the temperature of the synchronous mechanism is prevented from being too high or a larger thermal expansion deformation is generated; and the screw mechanism is arranged outside the internal space of the box body, so that the working temperature can be effectively reduced, and the threaded cooperation structure is prevented from being deformed and disabled due to heat. Therefore, the adaptability to temperature change is better, the service life is longer, and a higher temperature processing process can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of a three-dimensional structure according to an embodiment of the present application.

[0017] Figure 2 is Figure 1 is a schematic view of a cross-sectional structure of a right side portion in the embodiment shown.

[0018] Figure 3 is Figure 1Cross-sectional structural schematic of the left side portion in the illustrated embodiment.

[0019] Figure 4 is Figure 1 Top view structural schematic of the right side portion in the illustrated embodiment.

[0020] Explanation of reference numerals in the drawings:

[0021] 1, guide rail fixing seat; 2, cross-lifting frame; 3, amplitude modulation track; 4, amplitude modulation track frame; 5, inner side wall plate; 6, amplitude modulation synchronous shaft; 7, amplitude modulation screw; 8, amplitude modulation nut; 9, positioning partition piece; 91, wear-resistant sleeve; 92, partition sleeve; 10, amplitude modulation driving sprocket; 11, amplitude modulation driven sprocket; 12, amplitude modulation transmission chain; 13, amplitude modulation drive motor; 14, amplitude modulation hand wheel; 15, position display device; 16, automatic control device; 17, gearbox; 18, outer side wall plate. DETAILED DESCRIPTION

[0022] The utility model provides a cross-lifting machine's amplitude modulation device, solves the problem of failure of the existing scheme due to thermal deformation, realizes the ability of synchronous control, convenient adjustment, better adaptation to temperature change, and improves equipment operation stability.

[0023] Please refer to Figure 1 The utility model discloses a cross-lifting machine's amplitude modulation device, including the cross-lifting frame 2, still including two transverse distribution, and the independent setting guide rail fixing seat 1. Each guide rail fixing seat 1 is slidably arranged on the cross-lifting frame 2 and can slide left and right. Each guide rail fixing seat 1 is connected with an amplitude modulation mechanism, and each amplitude modulation mechanism drives the guide rail fixing seat 1 to move independently, or is connected through a synchronous mechanism to drive the two guide rail fixing seats 1 to move synchronously.

[0024] The amplitude modulation mechanism is, for example, a mechanical structure mode such as a ball screw, a screw nut, or the like, or an electrically controlled electric telescopic rod, a cylinder, a hydraulic cylinder, or the like, and the synchronous mechanism is, for example, a synchronous shaft transmission structure, a control system (cable, pipeline, electromagnetic valve), or the like. The amplitude modulation device is located in the heat preservation box of the cross-lifting machine, and it is at room temperature when the equipment is installed or overhauled, and it is in a high-temperature environment when working, and this temperature difference will cause thermal expansion deformation of the metal structure. In the prior art, the two guide rail fixing seats are directly connected through a rod, which has only a small deformable space, and the structure at one end (for example, a ball screw) may be deformed due to thermal expansion, resulting in damage. The amplitude modulation mechanisms of the two guide rail fixing seats 1 are independently separated and not directly connected, thereby effectively avoiding the above problems.

[0025] Please refer to Figures 1 to 4In the preferred embodiment, the amplitude modulation mechanism comprises an amplitude modulation screw rod 7 connected with the guide rail fixing base 1 and an amplitude modulation nut 8 connected with the amplitude modulation screw rod 7, and the amplitude modulation screw rod 7 and the amplitude modulation nut 8 form a screw rod nut transmission mechanism (referred to as a screw rod mechanism). The amplitude modulation nut 8 is connected with a driving control device, for example, the amplitude modulation nut 8 is connected with a motor through a chain transmission, so as to convert the rotation output by the motor into the extension and retraction distance of the amplitude modulation screw rod 7, thereby adjusting and controlling the position of the guide rail fixing base 1.

[0026] Further, the cross-pulling machine frame 2 comprises a transversely arranged amplitude modulation rail frame 4, which is a hollow support structure. The synchronization mechanism of the amplitude modulation mechanism and / or the amplitude modulation nut 8 and / or the amplitude modulation screw rod 7 are arranged in the hollow part inside the amplitude modulation rail frame 4, so as to isolate the mechanical transmission components from the high-temperature working environment. For example, in the preferred embodiment, the amplitude modulation screw rod 7 and the synchronization mechanism of the amplitude modulation mechanism are arranged in parallel along the upper and lower directions of the transverse direction (both are transversely arranged and arranged in parallel with one above the other), and the synchronization mechanism is arranged inside the amplitude modulation rail frame 4.

[0027] The cross-pulling machine has a heat preservation box body, and the two guide rail fixing bases 1 (as well as the guide rails on the guide rail fixing bases 1, the amplitude modulation rail frame 4, etc.) are located inside the heat preservation box body. The film is heated and stretched while being conveyed and advanced inside the heat preservation box body. The outer wall of the heat preservation box body is a heat preservation layer structure, which comprises an inner side wall plate 5, an outer side wall plate 18, and a hollow cavity between the inner side wall plate 5 and the outer side wall plate 18. The inner side of the inner side wall plate 5 and / or the outer side wall plate 18 is, for example, a steel plate attached with a heat preservation and insulation plate, and the hollow cavity can be further filled with a heat preservation cotton insulation structure, so as to have the required heat insulation effect while ensuring the structural strength. The amplitude modulation nut 8 is located inside the hollow cavity of the heat preservation layer structure or is arranged outside the heat preservation box body, so as to avoid the failure of the thread cooperation of the screw rod nut transmission mechanism due to thermal deformation.

[0028] Preferably, the cross-pulling machine frame 2 is provided with two sections of amplitude modulation rails 3, which are independent and have a spacing distance therebetween, and the two guide rail fixing bases 1 are respectively connected with the two sections of amplitude modulation rails 3 in a sliding manner. The basic structure of the guide rail fixing base and the amplitude modulation rail can be used in the prior art or other feasible schemes, and will not be described here. In this scheme, the amplitude modulation rail 3 is also arranged in a segmented manner, which can avoid the problem of extrusion deformation of the amplitude modulation rail 3 due to thermal expansion and affect the amplitude modulation function, compared with the whole rail in the prior art.

[0029] More specifically, in the preferred embodiment, the amplitude modulation mechanism comprises an amplitude modulation screw rod 7 connected with the guide rail fixing base 1 and an amplitude modulation nut 8 connected with the amplitude modulation screw rod 7, and the amplitude modulation screw rod 7 and the amplitude modulation nut 8 form a screw rod nut transmission mechanism (referred to as a screw rod mechanism). The amplitude modulation nut 8 is connected with a driving control device, for example, the amplitude modulation nut 8 is connected with a motor through a chain transmission, so as to convert the rotation output by the motor into the extension and retraction distance of the amplitude modulation screw rod 7, thereby adjusting and controlling the position of the guide rail fixing base 1. Figures 1 to 4In the preferred embodiment shown, the (at least part of the) synchronizing mechanism of the amplitude modulation mechanism is arranged inside the amplitude modulation rail frame 4, and the amplitude modulation rail 3 is arranged on the outer surface (e.g. upper surface) of the amplitude modulation rail frame 4. Since the amplitude modulation rail frame 4 separates the high-temperature environment inside the cross-lapper machine insulation box from the inside of the amplitude modulation rail frame 4, a portion of the heat can be isolated (or a heat insulation layer can be arranged inside the amplitude modulation rail frame 4 for further heat insulation), so that the temperature inside the amplitude modulation rail frame 4 is lower than the high temperature outside, which is conducive to the operation of the synchronizing mechanism; for example, the part of the synchronizing mechanism inside the amplitude modulation rail frame 4 is a cable, or the amplitude modulation synchronizing shaft 6 in the specific embodiment shown, and reducing the temperature difference can avoid significant thermal deformation of the structure, and for circuit control mode, it is also conducive to improving the service life of the circuit, etc. The amplitude modulation rail frame 4 (cross-lapper machine frame 2) is supported and positioned by, for example, a bolted fixed column structure at the bottom, which can be optionally arranged to pass through the lower end to the outside of the insulation box.

[0030] The amplitude modulation mechanism is preferably a lead screw mechanism (e.g. a ball screw mechanism), which mainly includes an amplitude modulation lead screw 7 and an amplitude modulation nut 8 that is matched (threaded) to the outside of the amplitude modulation lead screw 7, and a positioning partition member 9, which is, for example, cylindrical, and the amplitude modulation lead screw 7 is connected and fixed with the inner side wall plate 5 through the positioning partition member 9, and the positioning partition member 9 is sleeved on the amplitude modulation lead screw 7. More specifically, the positioning partition member 9 is fixedly connected with the inner side wall plate 5 through, for example, a flange and a bolt structure, and the amplitude modulation lead screw 7 is slidingly connected with the positioning partition member 9. The positioning partition member 9 is sleeved on the outer side end of the amplitude modulation lead screw 7, and the inner side end of the amplitude modulation lead screw 7 is connected with the guide rail fixed seat 1. Wear-resistant and high-temperature-resistant inner sleeve rings are arranged at both ends inside the positioning partition member 9, and the wear-resistant and high-temperature-resistant inner sleeve rings are sleeved on the amplitude modulation lead screw 7. The wear-resistant and high-temperature-resistant inner sleeve rings include a wear-resistant sleeve 91 and a partition sleeve 92, the wear-resistant sleeve 91 is located at one end of the positioning partition member 9 close to the guide rail fixed seat 1, and the wear-resistant sleeve 91 is preferably, for example, a brass sleeve ring, which has the characteristics of high temperature resistance; the partition sleeve 92 is located at one end of the positioning partition member 9 away from the guide rail fixed seat 1, and the partition sleeve 92 is preferably, for example, a polytetrafluoroethylene gasket, which has the characteristics of wear resistance and high temperature resistance.

[0031] The amplitude modulation nut 8 is threadedly matched with the outside of the amplitude modulation lead screw 7, so that as the amplitude modulation nut 8 rotates, the amplitude modulation lead screw 7 and the guide rail fixed seat 1 will move horizontally. The thread directions of the two amplitude modulation lead screws 7 of the two guide rail fixed seats 1 are opposite, so that when the two amplitude modulation nuts 8 rotate synchronously and in the same direction, the two guide rail fixed seats 1 will move simultaneously towards or away from each other.

[0032] The guide rail fixing seat 1 is connected with the amplitude adjusting screw rod 7 in the mode that, for example, a baffle is installed on the side of the guide rail fixing seat 1, the baffle is in an L-shaped cross section, a space is formed between the baffle and the side of the guide rail fixing seat 1 to accommodate the head of a screw, the rod of the screw is connected with the amplitude adjusting screw rod 7, according to actual needs and the specific setting mode of the screw rod mechanism, the guide rail fixing seat 1 can be fixed with the amplitude adjusting screw rod 7, or the rotation connection is realized through the cooperation of the head of the screw and the baffle (or a bearing is further arranged to realize the rotation connection), so as to realize the function or increase the flexibility of the structure of the screw rod mechanism.

[0033] Preferably, the synchronous mechanism adopts a mechanical transmission mode, including a transversely arranged amplitude adjusting synchronous shaft 6, both ends of the amplitude adjusting synchronous shaft 6 are rotationally connected with the inner side wall plate 5 through, for example, bearings, and both ends of the amplitude adjusting synchronous shaft 6 are respectively in transmission connection with two amplitude adjusting mechanisms. The amplitude adjusting synchronous shaft 6 is located in the amplitude adjusting track frame 4, the amplitude adjusting track frame 4 is in a hollow tubular structure, and both ends of the amplitude adjusting track frame 4 are preferably connected with the inner side wall plate 5, so that the amplitude adjusting synchronous shaft 6 is basically isolated from the internal structure of the heat preservation box. The amplitude adjusting synchronous shaft 6 is sleeved with an amplitude adjusting driving sprocket 10 at both ends, the amplitude adjusting nut 8 is rotationally connected with the inner side wall plate 5 through a bearing, the amplitude adjusting nut 8 is coaxially connected with an amplitude adjusting driven sprocket 11, and the amplitude adjusting driving sprocket 10 and the amplitude adjusting driven sprocket 11 are in transmission connection with an amplitude adjusting transmission chain 12. The amplitude adjusting synchronous shaft 6 is connected with a driving control device, for example, the amplitude adjusting synchronous shaft 6 is connected with an amplitude adjusting driving motor 13 and / or an amplitude adjusting hand wheel 14. The amplitude adjusting synchronous shaft 6 rotates as a driving part, so that both amplitude adjusting driven sprockets 11 at both ends are driven to rotate by the amplitude adjusting synchronous shaft 6. This synchronous transmission mode has high synchronization effect and transmission efficiency; further, the two amplitude adjusting nuts 8 on both sides rotate at the same time, since the amplitude adjusting screw rod 7 is rotationally connected with the guide rail fixing seat 1, and the guide rail fixing seat 1 is slidingly connected with the transverse pulling frame 2, the amplitude adjusting screw rod 7 is restricted from freely rotating, but is translated under the threaded cooperation relationship with the rotation of the amplitude adjusting nut 8, so as to drive the guide rail fixing seat 1 to translate.

[0034] The amplitude adjusting synchronous shaft 6, the amplitude adjusting screw rod 7 and the amplitude adjusting track 3 are parallel and transversely arranged, and the overall structure is clear and neat. It can be conceived that since the chain and sprocket transmission mode is adopted, it can also withstand a certain degree of inclination and deviation; it can be considered that the amplitude adjusting track 3 is arranged obliquely according to needs, etc. These easily conceived variant embodiments do not deviate from the concept of the present application.

[0035] Please refer to Figure 4The drive control device connected to one end of the amplitude modulation synchronous shaft 6 further comprises a gearbox 17, which has two input ends, one connected to the amplitude modulation drive motor 13 and the other connected to the amplitude modulation hand wheel 14. The output end of the gearbox 17 is the output shaft of the drive control device connected to the amplitude modulation synchronous shaft 6, so that the motor control can be realized, and the manual fine adjustment can be realized through the hand wheel. More preferably, the amplitude modulation synchronous shaft 6 is further connected to a position display device 15 and / or an automatic control device 16. The position display device 15, for example, comprises a sensor and a display, and can display the position information of the guide rail fixing seat in digital form for viewing during adjustment. The automatic control device 16 is connected to the gearbox 17 or the amplitude modulation drive motor 13, and can realize remote control through wired or wireless mode. The amplitude modulation drive motor 13, the amplitude modulation hand wheel 14, the position display device 15 and the automatic control device 16 are linked together, and the actual data displayed by the position display device 15 will be affected by the electric or manual or remote control adjustment. The information of the position display device 15 can be obtained by the remote end, so as to realize the flexible adjustment mode of automatic control as the main and manual control as the auxiliary, and ensure the accuracy of the horizontal stretching amplitude.

[0036] In the prior art, the drive control device and related bearings and other components, as well as the position of the screw and the nut thread connection, are located in the heat preservation box body, which is not conducive to the service life of these mechanical structures working in high temperature for a long time, especially for threaded connection, thermal deformation will cause it to lose function. On the basis of the prior art, the thread tolerance between the thread and the screw rod can be considered to be increased to adapt to the high temperature area, but it will lead to a decrease in precision. In the present scheme, preferably, the side wall of the heat preservation box body has a heat preservation layer structure, and the amplitude modulation nut of the screw rod mechanism and the drive control device are located in the heat preservation layer structure or outside the heat preservation box body. The threaded matching part of the screw rod mechanism is isolated from the high temperature environment inside the box body, and the working environment temperature can be reduced by more than 100℃, thereby avoiding the above-mentioned problems caused by high temperature; the chain, sprocket and other structures are also located in the heat preservation layer structure; the drive control device is located outside the screw rod mechanism, preferably outside the heat preservation box body, which effectively improves the service life and enables electronic components to be better used in the drive control device to realize automatic / remote control, etc.

[0037] In conclusion, the amplitude modulation device of the horizontal pulling machine, when the rod, for example, the screw rod in the amplitude modulation mechanism of the guide rail fixing seat expands due to heat, since the two guide rail fixing seats are not connected, the amplitude modulation mechanism and the preferred amplitude modulation track are also independently arranged, so that the two guide rail fixing seats have a larger space for left and right movement to adapt to the deformation amount of thermal expansion, and the structure is guaranteed not to be deformed and damaged due to thermal expansion; meanwhile, the two amplitude modulation mechanisms can be synchronously controlled, so that the two guide rail fixing seats symmetrically approach or move away from each other, which is convenient for operation, and the synchronous mechanism is arranged in the amplitude modulation track frame of the horizontal pulling machine frame, which can block a certain temperature, so as to avoid that the temperature of the synchronous mechanism is too high or a larger thermal expansion deformation is generated. Therefore, the adaptability to temperature change of the scheme is better, the service life is longer, and the higher temperature processing process can be realized.

Claims

1. A transverse draw frame comprising a transverse draw frame frame (2), characterized in that, The device also comprises two transversely independent guide rail fixing bases (1), each of which is slidably arranged on the transverse pulling frame (2), and each of which is connected with an amplitude modulation mechanism, each of which independently drives the guide rail fixing base (1) to move or synchronously drives the guide rail fixing base (1) to move through a synchronous mechanism.

2. The amplitude modulation device of a cross-lapper according to claim 1, characterized in that The amplitude modulation mechanism comprises an amplitude modulation screw rod (7) connected with the guide rail fixing base (1) and an amplitude modulation nut (8) connected with the amplitude modulation screw rod (7), and the amplitude modulation nut (8) is connected with a driving control device.

3. The amplitude modulation device of a cross-lapper according to claim 2, characterized in that The transverse pulling frame (2) comprises a transversely arranged amplitude modulation track frame (4), which is a hollow support structure, and the synchronous mechanism of the amplitude modulation mechanism and / or the amplitude modulation nut (8) and / or the amplitude modulation screw rod (7) are arranged in the interior of the amplitude modulation track frame (4).

4. A transverse draw machine amplitude modulation device according to any one of claims 1 to 3, wherein, The transverse pulling frame has a heat preservation box, the guide rail fixing base (1) is located in the heat preservation box, the outer wall of the heat preservation box is a heat preservation layer structure, which comprises an inner side wall plate (5), an outer side wall plate (18) and a hollow cavity between the inner side wall plate (5) and the outer side wall plate (18); the amplitude modulation nut (8) is located in the hollow cavity of the heat preservation layer structure or is arranged outside the heat preservation box.

5. The amplitude modulation device of a cross-lapper according to claim 4, characterized in that The synchronous mechanism of the amplitude modulation mechanism is arranged in the interior of the amplitude modulation track frame (4).

6. The amplitude modulation device of a cross-lapper according to claim 5, characterized in that The amplitude modulation screw rod (7) is connected with the inner side wall plate (5) through a positioning partition piece (9), which is sleeved on the amplitude modulation screw rod (7); a wear-resistant and high-temperature-resistant inner sleeve ring is arranged at both ends in the positioning partition piece (9) and is sleeved on the amplitude modulation screw rod (7).

7. A transverse draw machine amplitude modulation device according to any one of claims 1 to 3 wherein, The transverse pulling frame (2) is provided with two sections of amplitude modulation tracks (3), which have a spacing distance between them, and the two guide rail fixing bases (1) are respectively slidably connected with the two sections of amplitude modulation tracks (3).

8. The amplitude modulation device of a cross-lapping machine according to claim 3, characterized in that, The synchronous mechanism of the amplitude modulation mechanism and the amplitude modulation screw rod (7) are arranged in parallel along the transverse direction, and the synchronous mechanism is arranged in the interior of the amplitude modulation track frame (4).

9. The amplitude modulation device of a cross-lapper according to claim 8, characterized in that The synchronous mechanism of the amplitude modulation mechanism comprises an amplitude modulation synchronous shaft (6), which is connected with an amplitude modulation driving motor (13) and / or an amplitude modulation hand wheel (14).

10. The amplitude modulation device of a cross-lapper according to claim 9, characterized in that The amplitude modulation synchronous shaft (6) is also connected with a position display device (15) and / or an automatic control device (16).

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