Clearance detection device of stem pressing machine

Abstract

The utility model provides a gap detection device for a stem pressing machine, which comprises a shell, a range finder, a transmission rod and an elastic piece, a cavity is arranged in the shell, the range finder and the elastic piece are arranged in the cavity, the transmission rod penetrates through the side wall of the shell, one end of the transmission rod is connected with the elastic piece, and the other end of the transmission rod is connected with the shell. The other end of the range finder is located outside the shell and abuts against the pressing roller, and the detection end of the range finder faces the transmission rod; the correction system is used for displaying a detection value of the range finder, and the range finder is electrically connected with the correction system. According to the utility model, the gap between the two pressing stems can be detected in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette processing equipment, in particular to a stem pressing machine gap detection device. Background Art

[0002] The stem pressing machine is used in the tobacco shred production line. It is a device that uses two large metal rollers to roll the tobacco stems after the second moistening. The stem pressing machine needs to regularly detect and adjust the stem gap to ensure that the stem gap meets the requirements of the tobacco stem processing technology. The existing method of adjusting the stem gap is to first manually insert a ruler between the two stems to measure the gap, then reset the stem gap value, and after the stem position is adjusted, insert the ruler again to check the gap. Repeat the above steps until the stem gap meets the requirements. This detection method is cumbersome to operate, has large measurement errors, and cannot perform real-time detection of the stem gap, thus failing to ensure that the rolled tobacco stems meet the process requirements. Utility Model Content

[0003] The purpose of the present invention is to address the deficiencies of the prior art and to provide a stem pressing machine gap detection device that can detect the gap between two pressed stems in real time.

[0004] The utility model proposes a stem press gap detection device, including a shell, a rangefinder, a transmission rod and an elastic member. A cavity is provided inside the shell, and the rangefinder and the elastic member are both arranged in the cavity. The transmission rod is arranged through the side wall of the shell, one end of the transmission rod is connected to the elastic member, and the other end is located outside the shell and abuts against the pressing roller, and the detection end of the rangefinder faces the transmission rod; it also includes a correction system for displaying the detection value of the rangefinder, and the rangefinder is electrically connected to the correction system.

[0005] A better technical solution of the present invention is: a partition is provided in the cavity, the partition divides the cavity into a front cavity and a rear cavity, the rangefinder is provided in the rear cavity, and the elastic member and the transmission rod are provided in the front cavity.

[0006] A better technical solution of the present invention is as follows: a positioning plate is provided at one end of the transmission rod located in the front cavity, and both ends of the elastic member are fixedly connected to the partition plate and the positioning plate respectively.

[0007] A better technical solution of the present utility model is as follows: a detection hole is provided in the middle of the partition, and the detection end of the rangefinder passes through the detection hole toward the transmission rod.

[0008] A better technical solution of the present invention is that a graphite packing is provided at the end of the shell, a through hole for the transmission rod to pass through is provided on the graphite packing, and the graphite packing is fixed to the outside of the shell.

[0009] The better technical solution of this utility model is that the end of the shell is provided with a sealing end cover, and the sealing end cover is provided on the graphite packing.

[0010] A better technical solution of the present invention is as follows: a contact plate is provided at the end of the transmission rod, the cross-sectional area of the contact plate is larger than the cross-sectional area of the transmission rod, and the contact plate abuts against the pressure roller.

[0011] A better technical solution of the present invention is that the elastic member is always kept in a compressed state.

[0012] The utility model provides a gap detection device for a stem pressing machine, which has the following beneficial effects: a transmission rod is always in contact with one of the pressing rollers, and when the gap between the two pressing rollers changes, the transmission rod is displaced along with the position change of the pressing rollers, and the distance meter detects the displacement of the transmission rod as the displacement of the pressing roller. The distance meter transmits the detection data to the correction system, and the operator can adjust the offset pressing roller according to the detection data to readjust the gap between the two pressing rollers to the standard value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0014] Figure 1 It is a cross-sectional view of an embodiment of the present utility model.

[0015] Figure 2 It is a front view of an embodiment of the present utility model.

[0016] In the figure: 10, shell; 11, rear cavity; 12, front cavity; 13, partition; 14, graphite packing; 20, rangefinder; 30, transmission rod; 31, positioning plate; 32, contact plate; 40, elastic member. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other.

[0018] See also Figure 1 and Figure 2 A device for detecting the gap of a stem pressing machine includes a shell 10, a distance meter 20, an elastic member 40 and a transmission member. A cavity is provided in the shell 10. The distance meter 20 and the elastic member 40 are fixedly provided in the cavity. The transmission rod 30 passes through the side wall of the shell 10. One side of the transmission rod 30 is connected to the elastic member 40, and the other side of the transmission rod 30 is located outside the shell 10 and is kept in contact with the pressing roller. The detection end of the distance meter 20 is set toward the transmission rod 30. When the pressing roller is displaced and the gap distance between the two pressing rollers changes, the transmission rod 30 kept in contact with the pressing roller moves together with the pressing roller. The displacement distance of the transmission rod 30 detected by the distance meter 20 is the displacement distance of the pressing roller. The operator can adjust the position of the pressing roller according to the data measured by the distance meter 20 so that the gap between the two pressing rollers meets the requirements of the pressing roller processing technology.

[0019] The housing 10 is a rigid structure, fixed to a frame, the ground, or any other structure that does not move during the production process via fastening bolts. This protects the transmission rod 30 within it, preventing displacement of the transmission rod 30 by external forces and the resulting detection errors. A linear cavity is disposed within the housing 10. A partition 13 is fixedly disposed in the middle of the housing 10, dividing the cavity into a front cavity 12 and a rear cavity 11. The rangefinder 20 is disposed within the rear cavity 11, and the elastic member 40 and the transmission rod 30 are disposed within the front cavity 12. The partition 13 is provided with a detection hole for the detection end of the rangefinder 20 to pass through. The detection end of the rangefinder 20 faces the transmission rod 30 and is used to detect the displacement of the transmission rod 30. In this embodiment, the rangefinder 20 is an ultrasonic rangefinder 20, fixedly connected to the partition 13 via fastening bolts. The detection end of the rangefinder 20 passes through the detection hole and is located within the front cavity 12. As another embodiment, the rangefinder 20 may be an infrared rangefinder 20 or a laser rangefinder 20 .

[0020] The elastic member 40 is fixedly disposed within the front cavity 12, and the transmission rod 30 is connected to the elastic member 40. The elastic member 40 is always maintained in a compressed state within the front cavity 12, and its elastic force acts on the transmission rod 30, keeping the transmission rod 30 in contact with the pressure roller. Within the cavity, the elastic member 40 deforms in the same direction as the length of the cavity. In this embodiment, the elastic member 40 is a spring, one end of which is fixedly connected to the partition 13 and the other end of which is fixedly connected to the transmission rod 30.

[0021] A positioning plate 31 is provided at one end of the transmission rod 30 within the cavity. The cross-sectional area of the positioning plate 31 is larger than that of the transmission rod 30 but smaller than that of the front cavity 12. The elastic member 40 is fixedly connected to the transmission rod 30 via the positioning plate 31. The positioning plate 31 increases the area of the end of the transmission rod 30, facilitating the connection of the elastic member 40. Furthermore, the positioning plate 31 increases the reflective surface area, making it easier for the rangefinder 20 to locate the positioning plate 31 through reflection and measure the travel distance of the transmission rod 30.

[0022] A contact plate 32 is provided at one end of the transmission rod 30 outside the cavity. The cross-sectional area of the contact plate 32 is larger than that of the transmission rod 30, and the transmission rod 30 contacts the pressure roller via the contact plate 32. The contact plate 32 increases the contact area between the transmission rod 30 and the pressure roller, thereby increasing the stability of the contact between the transmission rod 30 and the pressure roller, preventing the contact position between the pressure roller and the transmission rod 30 from slipping after the pressure roller moves, which could cause detection errors.

[0023] Preferably, a graphite packing 14 is provided at the outer end of the housing 10. A through-hole is provided in the middle of the graphite packing 14. The transmission rod 30 is disposed through the through-hole and can slide within the graphite packing 14. Sealing end caps are provided at both ends of the housing 10. The sealing end caps are fixedly connected to the housing 10 by fastening bolts. One of the sealing end caps is mounted on the graphite packing 14. The provision of the sealing end caps and the graphite packing 14 improves the sealing effect of the housing 10, preventing dust in the working area from entering the housing 10 and affecting the movement of the transmission rod 30 and the detection accuracy of the rangefinder 20.

[0024] The apparatus further includes a correction system, which includes a display screen and a processing system. The rangefinder 20 is electrically connected to the correction system. The rangefinder 20 transmits the detected displacement data of the transmission rod 30 to the correction system. The correction system can display the detected values in real time to facilitate the operator to detect the distance between the two rollers, determine whether the gap between the two rollers meets the processing requirements, and adjust the offset roller position according to the detected values so that the gap between the two rollers meets the requirements of the pressing process. Furthermore, the correction system can also calculate the detected values and the standard distance between the two rollers. The correction system is electrically connected to the roller correction device, driving the correction device to adjust the offset rollers to adjust the distance between the two rollers to the standard distance.

[0025] In a tobacco factory, two pressing rollers are arranged on a frame, and both ends of one of the pressing rollers are arranged on a fixed block, which is detachably connected to the frame to facilitate moving the pressing roller and adjusting the gap between the two pressing rollers.

[0026] The installation process of this application is to select a suitable position on the frame to install the shell 10, adjust the position of the shell 10 so that the contact plate 32 at the end of the transmission rod 30 contacts the fixed block, and ensure that the elastic part 40 in the shell 10 is in a compressed state. After confirmation, fix the shell 10 on the frame by tightening the bolts, connect the rangefinder 20 to the calibration system, and complete the installation.

[0027] The working process of the present application is that when the gap between the two pressure rollers is the standard distance, the value obtained by the distance meter 20 based on the positioning plate 31 is the standard value; when one of the pressure rollers is offset, under the action of the elastic member 40, the transmission rod 30 maintained in contact with it is displaced accordingly, and the position between the positioning plate 31 and the distance meter 20 changes. The value measured by the distance meter 20 is the real-time value. The staff can adjust the offset pressure roller according to the difference between the real-time value and the standard value to adjust the gap between the two pressure rollers back to the standard distance.

[0028] It should be noted that when the gap between the pressure rollers is the standard distance, the standard value measured by the distance meter 20 is different from the standard distance. The standard distance is related to the requirements of the pressing process, and the standard value is related to the installation position of the shell 10 and the length of the transmission rod 30. The two can be obtained by calculation.

[0029] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A stem pressing machine gap detection device, characterized in that: The invention comprises a housing (10), a rangefinder (20), a transmission rod (30) and an elastic member (40), wherein a cavity is provided inside the housing (10), the rangefinder (20) and the elastic member (40) are both provided in the cavity, the transmission rod (30) is provided through the side wall of the housing (10), one end of the transmission rod (30) is connected to the elastic member (40), and the other end is located outside the housing (10) and abuts against a pressure roller, and the detection end of the rangefinder (20) faces the transmission rod (30); and the invention also comprises a calibration system for displaying the detection value of the rangefinder (20), and the rangefinder (20) is electrically connected to the calibration system.

2. A stem pressing machine gap detection device according to claim 1, characterized in that: A partition (13) is provided in the cavity, and the partition (13) divides the cavity into a front cavity (12) and a rear cavity (11); the rangefinder (20) is provided in the rear cavity (11), and the elastic member (40) and the transmission rod (30) are provided in the front cavity (12).

3. A stem pressing machine gap detection device according to claim 2, characterized in that: A positioning plate (31) is provided at one end of the transmission rod (30) located in the front cavity (12), and two ends of the elastic member (40) are respectively fixedly connected to the partition plate (13) and the positioning plate (31).

4. A stem pressing machine gap detection device according to claim 2, characterized in that: A detection hole is provided in the middle of the partition (13), and the detection end of the rangefinder (20) passes through the detection hole toward the transmission rod (30).

5. A stem pressing machine gap detection device according to claim 1, characterized in that: A graphite packing (14) is provided at the end of the housing (10), and a through hole is provided on the graphite packing (14) for the transmission rod (30) to pass through. The graphite packing (14) is fixed to the outside of the housing (10).

6. A stem pressing machine gap detection device according to claim 5, characterized in that: The end of the shell is provided with a sealing end cover, and the sealing end cover is provided on the graphite packing (14).

7. The stem pressing machine gap detection device according to claim 1, characterized in that: A contact plate (32) is provided at the end of the transmission rod (30), the cross-sectional area of the contact plate (32) is larger than the cross-sectional area of the transmission rod (30), and the contact plate (32) abuts against the pressure roller.

8. The stem pressing machine gap detection device according to claim 1, characterized in that: The elastic member (40) is always kept in a compressed state.

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