Precision adjustment of a pull roller device

Abstract

The utility model discloses a kind of precise adjustment stay roller devices, stay roller is rotatably installed on stay roller shaft, stay roller shaft is installed on fixed frame by precise adjustment mechanism, and precise adjustment mechanism includes main adjusting shaft, adjusting stud, main adjusting shaft is detachably installed in the clamp hole of fixed frame, main adjusting shaft is hollow shaft with inner channel, stay roller shaft is slidably arranged in the internal channel of main adjusting shaft and only can move along the axial direction of main adjusting shaft at the end away from stay roller, and the positioning locking of stay roller shaft position on main adjusting shaft is realized by positioning structure, adjusting stud is connected at the end away from stay roller of main adjusting shaft, two different pitch stud sections are spaced apart on adjusting stud, and the two stud sections of adjusting stud are respectively formed with the internal screw hole section of main adjusting shaft and the internal screw hole section of stay roller shaft Two pairs of thread pairs.The utility model has the advantages that the precise adjustment of stay roller position is realized using differential thread principle.

Description

Technical Field

[0001] This utility model relates to cigarette packaging production equipment, specifically to a precision adjustable pull roller device. Background Technology

[0002] The position of the pull cord on the cigarette pack's transparent paper is determined by the position of the last pull cord roller during the pull cord conveying process. In the original equipment, the pull cord roller was installed on the equipment's fixed frame as follows: the pull cord roller was rotatably mounted on a pull cord roller shaft, which was then mounted on the fixed frame. The fixed frame had a clamping structure, and the pull cord roller shaft was inserted into the clamping hole of the clamping structure. The clamping structure was then locked in place by locking screws, thus achieving a secure installation of the pull cord roller shaft on the fixed frame.

[0003] Currently, due to frequent changes in cigarette packaging brands and auxiliary materials, the position of the pull cord relative to the transparent paper of the cigarette pack is constantly changing, necessitating frequent fine-tuning of the pull cord roller's position. The current method for fine-tuning the pull cord roller's position is generally as follows: first, loosen the locking screws on the fixing frame, adjust the position of the pull cord roller shaft on the fixing frame, and then tighten the locking screws. This adjustment method relies solely on the operator's feel or experience, resulting in low precision and difficulty in achieving accurate adjustments. Consequently, it is difficult to ensure that the pull cord position meets requirements, and the adjustment process easily generates a large amount of waste. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a precision adjustment device for the wire drawing roller, so as to achieve precise adjustment of the position of the wire drawing roller and thus adapt to the adjustment requirements of different wire drawing positions.

[0005] This utility model is achieved through the following technical solution:

[0006] A precision adjustment device for a wire drawing roller is disclosed. The wire drawing roller is rotatably mounted on a wire drawing roller shaft, which is mounted on a fixed frame via a precision adjustment mechanism. The precision adjustment mechanism includes a main adjustment shaft and an adjustment stud. The main adjustment shaft is detachably mounted in a clamping hole of the fixed frame and is a hollow shaft with an internal channel. The end of the wire drawing roller shaft away from the wire drawing roller is slidably disposed in the internal channel of the main adjustment shaft and can only move along the axial direction of the main adjustment shaft. The position of the wire drawing roller shaft on the main adjustment shaft is locked by a positioning structure. An adjustment stud is connected to the end of the main adjustment shaft away from the wire drawing roller. The adjustment stud has two stud sections with different pitches spaced apart. The two stud sections of the adjustment stud form two sets of threaded pairs with the internal threaded hole section of the main adjustment shaft and the internal threaded hole section of the wire drawing roller shaft, respectively.

[0007] As a preferred embodiment of the above-mentioned precision adjustment pull roller device, a keyway is provided on the outer circumferential surface of the pull roller shaft, and a convex key is provided in the keyway. A sliding groove extending axially is provided on the side wall of the inner channel of the main adjustment shaft. The part of the convex key protruding from the outer circumferential surface of the pull roller shaft slides and engages with the sliding groove of the inner channel of the main adjustment shaft.

[0008] As a preferred embodiment of the above-mentioned precision adjustment roller device, one end of the adjustment stud extends beyond the main adjustment shaft and is equipped with a knob.

[0009] As a preferred embodiment of the above-mentioned precision adjustment wire roller device, the positioning structure includes a lateral positioning screw. The main adjustment shaft has a lateral screw hole that passes through the internal channel in the radial direction. The lateral positioning screw is screwed into the lateral screw hole of the main adjustment shaft and pressed against the wire roller shaft to achieve positioning and locking of the wire roller shaft on the main adjustment shaft.

[0010] As a preferred embodiment of the above-mentioned precision adjustment roller device, one end of the main adjustment shaft is provided with an end plate, and a threaded hole is opened in the center of the end plate as the internal threaded hole section of the main adjustment shaft.

[0011] As a preferred embodiment of the above-mentioned precision adjustment pull roller device, the pull roller shaft has a central hole, and one end of the central hole of the pull roller shaft is provided with an internal thread as the internal thread section of the pull roller shaft.

[0012] As a preferred embodiment of the above-mentioned precision adjustment roller device, the clamping hole of the fixing frame is used to lock the main adjustment shaft in place by means of locking screws and locking nuts.

[0013] This invention has the following advantages over the prior art:

[0014] This utility model provides a precision adjustment device for a wire drawing roller. By setting a main adjustment shaft and an adjustment stud, and forming two sets of threaded pairs with different pitches by the two stud sections of the adjustment stud respectively with the inner threaded hole section of the main adjustment shaft and the inner threaded hole section of the wire drawing roller shaft, the position of the wire drawing roller can be precisely adjusted by utilizing the differential thread principle, thereby achieving precise adjustment of the wire drawing position; and the adjustment process only requires rotating the adjustment stud, which is convenient, quick and easy to operate, saving time and effort. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a three-dimensional exploded view of this utility model.

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] Figure 4 This is a perspective view of the adjusting stud of this utility model.

[0019] Figure 5 This is a perspective view of the wire-pulling roller shaft of this utility model.

[0020] The following numbers are labeled in the diagram: 1. Wire pull roller; 2. Bearing; 3. Snap ring; 4. Fastening nut; 5. Wire pull roller shaft; 6. Fixing bracket; 7. Main adjusting shaft; 8. Adjusting stud; 9. Clamp hole; 10. Locking screw; 11. Keyway; 12. Raised key; 13. Slide groove; 14. Lateral positioning screw; 15. Knob; 16. First stud section; 17. Second stud section. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0022] See Figures 1 to 5 This embodiment discloses a precision adjustment device for a wire pull roller 1. The wire pull roller 1 is rotatably mounted on a wire pull roller shaft 5 via a bearing 2, a retaining spring 3, and a fastening nut 4. The axial position of the wire pull roller 1 is limited by the stepped surface of the wire pull roller shaft 5, the retaining spring 3, and the fastening nut 4. The wire pull roller shaft 5 is mounted on a fixed frame 6 via a precision adjustment mechanism. The precision adjustment mechanism includes a main adjustment shaft 7 and an adjustment stud 8. The main adjustment shaft 7 is detachably mounted in a clamping hole 9 of the fixed frame 6. The clamping hole 9 of the fixed frame 6 locks the main adjustment shaft 7 in place through a locking screw 10 and a locking nut. The main adjustment shaft 7 is a hollow shaft with an internal channel. The end of the wire pull roller shaft 5 away from the wire pull roller 1 is slidably disposed in the internal channel of the main adjustment shaft 7 and can only move along the axial direction of the main adjustment shaft 7. A keyway 11 is formed on the outer circumference of the drawing roller shaft 5, and a key 12 is provided in the keyway 11. A sliding groove 13 extending axially is formed on the side wall of the internal channel of the main adjusting shaft 7. The part of the key 12 protruding from the outer circumference of the drawing roller shaft 5 slides in conjunction with the sliding groove 13 of the internal channel of the main adjusting shaft 7, so that the drawing roller shaft 5 can only move along the axis of the internal channel of the main adjusting shaft 7 and cannot rotate circumferentially. The positioning and locking of the drawing roller shaft 5 on the main adjusting shaft 7 is achieved by a positioning structure. The positioning structure includes a lateral positioning screw 14. A lateral screw hole is formed on the main adjusting shaft 7 that extends radially through the internal channel. The lateral positioning screw 14 is screwed into the lateral screw hole of the main adjusting shaft 7 and pressed against the drawing roller shaft 5 to achieve the positioning and locking of the drawing roller shaft 5 on the main adjusting shaft 7.

[0023] The main adjusting shaft 7 has an adjusting stud 8 connected to its end furthest from the draw roller 1. One end of the adjusting stud 8 extends beyond the main adjusting shaft 7 and is equipped with a knob 15. The adjusting stud 8 has two stud sections with different pitches but the same direction of rotation, namely the first stud section 16 and the second stud section 17. The pitches of the first stud section 16 and the second stud section 17 can be set as needed, for example, to 0.8mm and 0.7mm respectively. The first stud section 16 and the second stud section 17 of the adjusting stud 8 form two threaded pairs with the internal threaded hole section of the main adjusting shaft 7 and the internal threaded hole section of the draw roller shaft 5, respectively, namely the first threaded pair and the second threaded pair. One end of the main adjusting shaft 7 has an end plate with a threaded hole at its center, serving as the internal threaded hole section of the main adjusting shaft 7. The draw roller shaft 5 has a center hole, and one end of the center hole of the draw roller shaft 5 has an internal thread, serving as the internal threaded hole section of the draw roller shaft 5. This embodiment achieves precise adjustment through the differential thread principle of the two threaded pairs.

[0024] The adjustment process of the precision adjustment roller 1 device provided in this embodiment is described below:

[0025] When adjusting the position of the pull wire, first loosen the lateral positioning screw 14 to release the pull wire roller shaft 5, and rotate the knob 15 of the adjusting stud 8 to rotate the adjusting stud 8. When the adjusting stud 8 rotates one revolution, it advances by a pitch of 0.8mm relative to the main adjusting shaft 7. Since the pull wire roller shaft 5 and the other stud section of the adjusting stud 8 form a second thread pair, and the pull wire roller shaft 5 can only move axially, the pull wire roller shaft 5 retracts by a pitch of 0.7mm relative to the adjusting stud 8. Therefore, the pull wire roller shaft 5 as a whole moves forward by 0.1mm relative to the main adjusting shaft 7, and thus the pull wire roller 1 mounted on the pull wire roller shaft 5 is moved forward by 0.1mm. The amount of movement produced by this differential thread structure is much smaller than that of a single nut, thus achieving the function of precise adjustment.

[0026] When a large range of adjustment of the pull wire position is required, the locking nut can be loosened first to release the main adjusting shaft 7, and the position of the main adjusting shaft 7 on the fixed frame 6 can be roughly adjusted. Then, the adjustment stud 8 can be used for precision adjustment.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precision adjustment of a pull roll device, the pull roll being rotatably mounted on a pull roll shaft, characterized in that: The pull roller shaft is mounted on the fixed frame via a precision adjustment mechanism. The precision adjustment mechanism includes a main adjustment shaft and an adjustment stud. The main adjustment shaft is detachably mounted in the clamping hole of the fixed frame. The main adjustment shaft is a hollow shaft with an internal channel. The end of the pull roller shaft away from the pull roller is slidably disposed in the internal channel of the main adjustment shaft and can only move along the axial direction of the main adjustment shaft. The position of the pull roller shaft on the main adjustment shaft is locked by a positioning structure. An adjustment stud is connected to the end of the main adjustment shaft away from the pull roller. The adjustment stud has two stud sections with different pitches spaced apart. The two stud sections of the adjustment stud form two sets of threaded pairs with the internal threaded hole section of the main adjustment shaft and the internal threaded hole section of the pull roller shaft, respectively.

2. A precision adjustment of pull roll device as claimed in claim 1, wherein: A keyway is provided on the outer circumference of the drawing roller shaft, and a convex key is provided in the keyway. A sliding groove extending axially is provided on the side wall of the inner channel of the main adjusting shaft. The part of the convex key protruding from the outer circumference of the drawing roller shaft slides into the sliding groove of the inner channel of the main adjusting shaft.

3. A precision adjustment of pull roll device as claimed in claim 1, wherein: One end of the adjusting stud extends beyond the main adjusting shaft and is equipped with a knob.

4. A precision adjustment of pull roll device as claimed in claim 1, wherein: The positioning structure includes a lateral positioning screw. The main adjusting shaft has a lateral screw hole that runs radially through the internal channel. The lateral positioning screw is screwed into the lateral screw hole of the main adjusting shaft and pressed against the wire drawing roller shaft to achieve positioning and locking of the wire drawing roller shaft on the main adjusting shaft.

5. A precision adjustment of pull roll device as claimed in claim 1, wherein: One end of the main adjusting shaft is provided with an end plate, and a threaded hole is opened in the center of the end plate as the internal threaded hole section of the main adjusting shaft.

6. A precision adjustment of pull roll device as claimed in claim 1, wherein: The center of the pull roller shaft has a central hole, and one end of the central hole of the pull roller shaft is provided with an internal thread as the internal thread section of the pull roller shaft.

7. A precision adjustment of pull roll device as claimed in claim 1, wherein: The clamp holes of the fixing bracket are used to lock the main adjusting shaft in place by using locking screws and locking nuts.

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