A transmission assembly, knurling mechanism and paper cup bottom sealing equipment

Abstract

The present application relates to a transmission assembly, a knurling mechanism and a paper cup bottom sealing device. The transmission assembly connects the knurling wheel of the knurling mechanism and a driving assembly, and includes a sleeve, a slider shaft, a first transmission rod, a second transmission rod and an adjusting member. The sleeve is used for transmission connection with the driving assembly; the slider shaft can be radially slidably installed on the sleeve, one end of the slider shaft has a guide bevel, and the other end of the slider shaft is used for fixed connection with the knurling wheel; the first transmission rod can be axially slidably passed through the sleeve and abut against the guide bevel; the second transmission rod is located on the side of the first transmission rod away from the guide bevel, and the second transmission rod is used for transmission connection with the driving assembly; the adjusting member can be telescopically arranged between the first transmission rod and the second transmission rod to adjust the spacing between the first transmission rod and the second transmission rod. In this way, only the adjusting member of the transmission assembly needs to be adjusted to adjust the abutment pressure of the knurling wheel on the paper cup, which is convenient for debugging and easy to operate, and is conducive to saving time and cost.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cup production, in particular to a transmission component, a knurling mechanism and paper cup bottom sealing equipment. Background Art

[0002] The bottom of paper cups needs to be sealed during the automated production process. Generally, it needs to go through three steps: hot air softening, bottom gripping, and knurling, and finally the bottom and body of the cup are fixed. The knurling mechanism uses a knurled inner sleeve and a movable knurled block set in the knurled inner sleeve to press and bond the bottom and body of the cup. In the actual production process, the pressure between the knurled block and the knurled inner sleeve needs to be repeatedly adjusted to ensure that the bottom and body of the cup are fully bonded and will not be crushed. Furthermore, when the thickness of the cup is different, the pressure also needs to be adjusted accordingly.

[0003] In the prior art, a knurled push rod with a guiding slope on the top is used to push the knurled block away from the central axis of the knurled inner sleeve. The bottom end of the knurled push rod is connected to a driving device. In order to adjust the magnitude of the pressing force, it is often necessary to adjust the vertical height of the entire driving device at the bottom. In the actual operation, the casing used for enclosure needs to be removed, which is troublesome to adjust and there is also a risk of the push rod getting stuck. Since a paper cup production line usually requires multiple paper cup production equipment for combined production, batch debugging is time-consuming and labor-intensive. Utility Model Content

[0004] In view of the fact that the existing paper cup production equipment has the disadvantage of long debugging time when adjusting the pressing force of the knurling mechanism, it is necessary to provide a transmission component, a knurling mechanism and a paper cup bottom sealing device.

[0005] A transmission assembly, used for connecting a knurling wheel and a driving assembly of a knurling mechanism, comprising:

[0006] A shaft sleeve, the shaft sleeve is used for transmission connection with the drive assembly;

[0007] A slider shaft, the slider shaft can be radially slidably mounted on the shaft sleeve, one end of the slider shaft has a guiding inclined surface, and the other end of the slider shaft is used for fixed connection to the knurling wheel;

[0008] A first transmission rod, which is axially slidably disposed in the shaft sleeve and abuts against the guiding inclined surface;

[0009] a second transmission rod, the second transmission rod being located on a side of the first transmission rod away from the guiding inclined surface, the second transmission rod being used for transmission connection with the driving assembly; and

[0010] An adjusting member is telescopically disposed between the first transmission rod and the second transmission rod to adjust the distance between the first transmission rod and the second transmission rod.

[0011] With such arrangement, the pressing force of the knurled wheel on the paper cup can be adjusted by adjusting the adjusting part of the transmission assembly without removing the entire casing. The debugging is convenient and easy to operate, which is helpful to save time cost during batch debugging.

[0012] In one embodiment, the adjusting member is threadedly connected to one of the first transmission rod and the second transmission rod, and abuts against the other one.

[0013] Such arrangement is convenient for disassembly and assembly, maintenance and debugging, and operation.

[0014] In one embodiment, a bolt hole is formed at one end of the first transmission rod close to the second transmission rod, and the adjusting member is an adjusting bolt inserted into the bolt hole.

[0015] Such an arrangement can realize quantitative adjustment, and the adjustment accuracy is controllable. In addition, the adjustment parts can use standard bolts, which also reduces the production cost.

[0016] In one embodiment, one side of the slider shaft deviates from the axial direction toward the first transmission rod to form a guide sliding hole, and the first transmission rod is slidably inserted in the guide sliding hole.

[0017] Such a configuration is helpful to reduce the shaking of the slider shaft. When the first transmission rod reaches the preset position, the position of the slider shaft is also fixed relative to the sleeve, thereby improving the knurling accuracy.

[0018] In one embodiment, the sleeve includes a sleeve body with a slide groove at the end and a cover plate covering the slide groove, the cover plate is provided with a clearance hole, the slider shaft includes a sliding part slidably arranged in the slide groove and a connecting part passing through the sliding part and passing through the clearance hole, and the connecting part is used to fix the knurling wheel connected to the knurling mechanism.

[0019] With such arrangement, the slide groove provided on the sleeve body can prevent the slider shaft from rotating relative to the shaft sleeve, and the cover plate is used to prevent the slider shaft from falling out, and the two cooperate to limit the slider shaft to the shaft sleeve.

[0020] The present application also provides a knurling mechanism, comprising:

[0021] Knurled sleeve;

[0022] A knurling die, which is fixed to one end of the knurling sleeve and is provided with a knurling hole;

[0023] A knurling wheel, wherein the knurling wheel is located in the knurling hole and the diameter of the knurling wheel is smaller than the diameter of the knurling hole;

[0024] As in the above-mentioned transmission assembly, the slider shaft of the transmission assembly is fixedly connected to the knurled wheel, and the shaft sleeve of the transmission assembly is rotatably inserted in the knurled sleeve; and

[0025] A driving assembly, wherein the driving assembly drives the first transmission rod connected to the transmission assembly to drive the knurling wheel to rotate, and the driving assembly drives the second transmission rod connected to the transmission assembly to drive the slider shaft to deviate from the central axis of the sleeve so that the knurling wheel is pressed against the knurling die.

[0026] With such arrangement, the use of the transmission assembly provided by the present application can reduce the difficulty of maintenance and debugging of the knurling mechanism, and the operation is simple and easy to understand.

[0027] In one of the embodiments, the knurled sleeve includes a knurled inner sleeve, a knurled outer sleeve detachably mounted on the knurled inner sleeve, and a clamp mounted on the knurled outer sleeve.

[0028] With such arrangement, the positions of the knurled outer sleeve and the knurled inner sleeve can be relatively adjusted, and the clamp is flexible to adjust and easy to disassemble.

[0029] The present application also provides a paper cup bottom sealing device, comprising a driving device, a synchronous seat, and a hot air mechanism, a bottom rolling mechanism and a knurling mechanism installed on the synchronous seat, wherein the driving device is drivingly connected to the synchronous seat.

[0030] With such arrangement, the hot air mechanism, the bottom rolling mechanism and the knurling mechanism are combined by a synchronous seat, so that the three can move synchronously along the vertical direction, and the time intervals for the paper cup to be transferred between the three mechanisms can be kept consistent, which is beneficial to ensuring the quality of the bottom sealing of the paper cup.

[0031] In one embodiment, the synchronization seat includes a connecting rod and a mounting plate and a synchronization plate arranged at intervals along the vertical direction, the two ends of the connecting rod are fixedly connected to the mounting plate and the synchronization plate respectively, the driving device includes a servo motor and a plurality of cams coaxially arranged and abutting against the synchronization plate, and the paper cup bottom sealing equipment also includes an oil storage tank, and the oil storage tank cover is provided on the cam.

[0032] With such an arrangement, the abutting surface of the cam is always lubricated, and excess lubricating oil can be recovered at regular intervals, thereby achieving automatic lubrication and automatic recovery and reducing maintenance costs.

[0033] In one embodiment, the hot air mechanism includes a hot air body and a hot air generator connected to the hot air body, the air inlet of the hot air body faces downward, the hot air generator is located directly below the hot air body and the air outlet of the hot air generator is correspondingly connected to the air inlet of the hot air body.

[0034] Such an arrangement shortens the hot air flow path compared to the prior art which uses a horizontally arranged hot air generator, which not only ensures uniform heating but also reduces heat loss, thereby reducing the actual heating power of Leicester and is beneficial to energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A structural schematic diagram of a knurling mechanism provided in this application;

[0036] Figure 2 for Figure 1 A cross-sectional view of the knurling mechanism shown in the AA direction;

[0037] Figure 3 for Figure 2 The structural diagram of the transmission assembly;

[0038] Figure 4 for Figure 3 The structural diagram of the middle slider shaft;

[0039] Figure 5 for Figure 3 Schematic diagram of the structure of the middle shaft sleeve;

[0040] Figure 6 for Figure 2 Schematic diagram of the structure of the middle knurled jacket;

[0041] Figure 7 A paper cup bottom sealing device is provided for this application.

[0042] Reference numerals:

[0043] 100, knurling mechanism; 10, knurling sleeve; 11, knurling inner sleeve; 12, knurling outer sleeve; 121, spacing groove; 13, hoop; 20, knurling die; 30, knurling wheel; 40, driving assembly; 41, first driving member; 50, transmission assembly; 51, sleeve; 511, sleeve body; 5111, slide groove; 512, cover plate; 52, slider shaft; 5201, guiding inclined surface; 5202, guiding sliding hole; 521, sliding part; 522, connecting part; 53, first transmission rod; 531, stop ring; 54. Second transmission rod; 55. Adjusting member; 56. Return spring; 57. Synchronous wheel; 58. CF bearing; 59. Rolling bearing; 200. Rolling bottom mechanism; 300. Hot air mechanism; 3001. Hot air body; 3002. Hot air generator; 400. Driving device; 4001. Servo motor; 4002. Driving shaft; 4003. Cam; 500. Synchronous seat; 5001. Mounting plate; 5002. Synchronous plate; 5003. Connecting rod; 600. Oil storage tank; 700. Bearing seat. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0050] The bottom of paper cups needs to be sealed during the automated production process. Generally, it needs to go through three steps: hot air softening, bottom gripping, and knurling to finally fix the bottom and body of the cup. The knurling mechanism uses a knurled inner sleeve and a movable knurled block inside the knurled inner sleeve to press and bond the bottom and body of the cup. Due to the assembly error of the knurling mechanism, the pressure between the knurled block and the knurled inner sleeve needs to be repeatedly adjusted during the actual production process to ensure that the bottom and body of the cup are fully bonded and will not be crushed. Furthermore, when the thickness of the cup is different, the pressure also needs to be adjusted accordingly.

[0051] In the prior art, a knurled push rod with a guiding slope on the top is used to push the knurled block away from the central axis of the knurled inner sleeve. The bottom end of the knurled push rod is connected to a driving device. In order to adjust the magnitude of the pressing force, it is often necessary to adjust the vertical height of the entire driving device at the bottom. In the actual operation, the casing used for enclosure needs to be removed, which is troublesome to adjust and there is also a risk of the push rod getting stuck. Since a paper cup production line usually requires multiple paper cup production equipment for combined production, batch debugging is time-consuming and labor-intensive.

[0052] Based on this, it is necessary to provide a transmission assembly, a knurling mechanism and a paper cup bottom sealing device that can be easily debugged.

[0053] See also Figure 1-3 , Figure 1 This is a structural schematic diagram of a knurling mechanism 100 provided in this application. Figure 2 for Figure 1 The cross-sectional view of the knurling mechanism 100 along the AA direction is shown. Figure 3 for Figure 2The knurling mechanism 100 provided in the present application comprises a knurling sleeve 10, a knurling die 20, a knurling wheel 30, a driving assembly 40 and a driving assembly 50. The knurling die 20 is fixed to one end of the knurling sleeve 10 and has a knurling hole. The knurling wheel 30 is located in the knurling hole and the diameter of the knurling wheel 30 is smaller than the diameter of the knurling hole. The driving assembly 50 is used to connect the knurling wheel 30 and the driving assembly 40. For details, please refer to Figure 2 The transmission assembly 50 includes a sleeve 51, a slider shaft 52, a first transmission rod 53, a second transmission rod 54 and an adjusting member 55. The slider shaft 52 can be radially slidably installed on one end of the sleeve 51 and abut against the guide inclined surface 5201. The second transmission rod 54 is located on the side of the first transmission rod 53 away from the guide inclined surface 5201. The second transmission rod 54 is used for transmission connection to the driving assembly 40. The adjusting member 55 is telescopically arranged between the first transmission rod 53 and the second transmission rod 54, and is used to adjust the distance between the first transmission rod 53 and the second transmission lever. In addition, the driving assembly 40 drives the first transmission rod 53 connected to the transmission assembly 50 to drive the knurling wheel 30 to rotate. The driving assembly 40 drives the second transmission rod 54 connected to the transmission assembly 50 to drive the slider shaft 52 to deviate from the central axis of the sleeve 51 so that the knurling wheel 30 is pressed against the knurling die 20. In this way, the pressing force of the knurled wheel 30 on the paper cup can be adjusted by only adjusting the adjusting member 55 of the transmission assembly 50 without removing the entire housing, which is convenient for debugging and easy to operate, and helps to save time cost during batch debugging.

[0054] See also Figure 2 and Figure 3 , Optionally, in an embodiment provided in the present application, the adjusting member 55 is screwed to one of the first transmission rod 53 and the second transmission rod 54, and abuts against the other. This makes disassembly and assembly convenient, maintenance and debugging convenient, and easy to operate. It is understandable that in other embodiments, the two ends of the adjusting member 55 can also be screwed to the first transmission rod 53 and the second transmission rod 54, respectively. It is understandable that in other embodiments, the adjusting member 55 can also be inserted in the first transmission rod 53 by interference, or the two ends of the adjusting member 55 can be inserted in the first transmission rod 53 and the second transmission rod 54 by interference.

[0055] Specifically, a bolt hole is provided at one end of the first transmission rod 53 near the second transmission rod 54, and the adjusting member 55 is an adjusting bolt inserted into the bolt hole. In this way, quantitative adjustment can be achieved, and the adjustment accuracy is controllable. In addition, the adjusting member 55 can adopt a standard bolt, which also reduces the production cost.

[0056] See also Figure 2 and Figure 4 , Figure 4 for Figure 3Schematic diagram of the structure of the slider shaft 52. Optionally, in an embodiment provided in the present application, the slider shaft 52 is deviated from the axial depression toward one side of the first transmission rod 53 to form a guide slide hole 5202, and the first transmission rod 53 can be slidably inserted in the guide slide hole 5202. It is worth noting that a plug matching the shape of the guide slide hole 5202 is provided at one end of the first transmission rod 53, and the plug can be slidably inserted in the guide slide hole 5202, which is conducive to reducing the shaking of the slider shaft 52. When the first transmission rod 53 reaches the preset position, the position of the slider shaft 52 is also fixed relative to the sleeve 51, thereby improving the knurling accuracy.

[0057] See also Figure 2 and Figure 5 , Figure 5 for Figure 3 The schematic diagram of the structure of the middle sleeve 51, further, in one embodiment provided in the present application, the sleeve 51 includes a sleeve body 511 with a slide groove 5111 at the end and a cover plate 512 covering the slide groove 5111, the cover plate 512 is provided with a clearance hole, the slider shaft 52 includes a sliding portion 521 slidably provided in the slide groove 5111 and a connecting portion 522 penetrating from the sliding portion 521 and provided in the clearance hole, and the connecting portion 522 is used to be fixedly connected to the knurling wheel 30 of the knurling mechanism 100. The slide groove 5111 provided on the sleeve body 511 can prevent the slider shaft 52 from rotating relative to the sleeve 51, and the cover plate 512 is used to prevent the slider shaft 52 from coming out, and the two cooperate to limit the slider shaft 52 to the sleeve 51.

[0058] See also Figure 2 Optionally, in an embodiment provided in the present application, the transmission assembly 50 further includes a reset spring 56, which is disposed between the first transmission rod 53 and the sleeve 51, and is used to make the first transmission rod 53 move axially relative to the sleeve 51, so that the first transmission rod 53 drives the slider shaft 52 to approach the central axis of the sleeve 51 and reset the knurling wheel 30 to the center of the knurling die 20. Specifically, a stop ring 531 is provided at one end of the first transmission rod 53 close to the second transmission rod 54, and the reset spring 56 is sleeved on the first transmission rod 53, and the two ends of the reset spring 56 are respectively in contact with the sleeve 51 and the stop ring 531.

[0059] Please refer again Figure 2 Optionally, in an embodiment provided in the present application, a CF bearing 58 is further provided at one end of the second transmission rod 54 close to the first transmission rod 53 to prevent wear between the adjustment member 55 and the second transmission rod 54 when the adjustment member 55 rotates with the first transmission rod 53.

[0060] See also Figure 2 and Figure 6 , Figure 6 for Figure 2Schematic diagram of the structure of the knurled outer sleeve 12. Optionally, in an embodiment provided in the present application, the knurled sleeve 10 includes a knurled outer sleeve 12, a knurled inner sleeve 11 and a clamp 13, and the shaft sleeve 51 of the transmission assembly 50 is rotatably inserted in the knurled inner sleeve 11. Specifically, a plurality of rolling bearings 59 are also provided between the knurled inner sleeve 11 and the shaft sleeve 51. The knurled outer sleeve 12 is detachably sleeved on the knurled outer sleeve 12, and the clamp 13 is sleeved on the knurled outer sleeve 12 and is used to make the knurled outer sleeve 12 and the knurled inner sleeve 11 close to each other. In order to increase the elasticity of the knurled outer sleeve 12, in an embodiment provided in the present application, a plurality of spacing grooves 121 are also provided on the peripheral side of the knurled outer sleeve 12.

[0061] This application also provides a paper cup bottom sealing device, see Figure 7 , Figure 7 A structural schematic diagram of a paper cup bottom sealing device provided in the present application includes a driving device 400, a synchronous seat 500, an oil storage tank 600, and a hot air mechanism 300, a bottom rolling mechanism 200 and a knurling mechanism 100 installed on the synchronous seat 500. The driving device 400 is driven and connected to the synchronous seat 500 to drive the above three mechanisms to move back and forth vertically synchronously. Specifically, in an embodiment provided in the present application, the synchronization seat 500 includes a connecting rod 5003 and a mounting plate 5001 and a synchronization plate 5002 arranged at intervals along the vertical direction, the two ends of the connecting rod 5003 are respectively fixedly connected to the mounting plate 5001 and the synchronization plate 5002, the paper cup bottom sealing device also includes a bearing seat 700, the connecting rod 5003 is slidably inserted in the bearing seat 700, the driving device 400 includes a servo motor 4001, a driving shaft 4002 fixedly connected to the servo motor 4001 and a plurality of cams 4003 coaxially arranged and abutting against the synchronization plate 5002, the oil storage tank 600 is covered on the cam 4003 to ensure that the abutting surface of the cam 4003 is always lubricated, and the excess lubricating oil can be recovered regularly, thereby realizing automatic lubrication and automatic recovery, and reducing maintenance costs.

[0062] It is worth noting that the driving assembly 40 in the present application includes a first driving member 41 and a second driving member, and the second driving member is used to drive the shaft sleeve 51 to rotate. Specifically, the transmission assembly 50 also includes a synchronous wheel 57 sleeved on the shaft sleeve 51; the first driving member is used to drive the second transmission rod 54 to move vertically, and the second driving member is intended to be distinguished from the first driving member 41, indicating that there are at least two independent driving members connected to the transmission assembly 50 for transmission. In actual design, in order to save space and production costs, the kinetic energy of the first driving member 41 is borne by the driving device 400. Specifically, the first driving member 41 is a conjugated wheel and is coaxially arranged with multiple cams 4003, and the conjugated wheel abuts against the second transmission rod 54 of the transmission assembly 50.

[0063] Please continue reading Figure 7, Optionally, in an embodiment provided in the present application, the hot air mechanism 300 includes a hot air body 3001 and a hot air generator 3002 connected to the hot air body 3001. Specifically, the hot air generator 3002 is a Leicester heater. In the prior art, the Leicester heater is arranged in the horizontal direction, so an adapter is required to connect the air outlet of the Leicester heater to the air inlet of the hot air body 3001. Since the transmission path of the hot air is long and needs to be turned, it is easy to cause uneven heating of the bottom of the cup. The hot air generator 3002 in the present application is located directly below the hot air body 3001 and the air outlet of the hot air generator 3002 is correspondingly connected to the air inlet of the hot air body 3001. In other words, the hot air generator 3002 is arranged vertically, which shortens the flow path of the hot air compared to the hot air generator 3002 arranged horizontally in the prior art, not only ensuring uniform heating, but also reducing heat loss, so that the actual heating power of Leicester can be reduced, and it is also beneficial to energy saving and environmental protection.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A transmission assembly for connecting a knurling wheel (30) and a driving assembly (40) of a knurling mechanism (100), characterized in that: include: A shaft sleeve (51), wherein the shaft sleeve (51) is used for transmission connection with the driving assembly (40); A slider shaft (52), the slider shaft (52) being radially slidably mounted on the shaft sleeve (51), one end of the slider shaft (52) being provided with a guiding inclined surface (5201), and the other end of the slider shaft (52) being used for being fixedly connected to the knurling wheel (30); A first transmission rod (53), the first transmission rod (53) being axially slidably disposed in the shaft sleeve (51) and abutting against the guide inclined surface (5201); a second transmission rod (54), the second transmission rod (54) being located on a side of the first transmission rod (53) away from the guiding inclined surface (5201), the second transmission rod (54) being used for transmission connection to the driving assembly (40); as well as An adjusting member (55) is telescopically arranged between the first transmission rod (53) and the second transmission rod (54) to adjust the distance between the first transmission rod (53) and the second transmission rod (54).

2. A transmission assembly according to claim 1, characterized in that: The adjusting member (55) is screwed to one of the first transmission rod (53) and the second transmission rod (54), and abuts against the other one.

3. A transmission assembly according to claim 2, characterized in that: A bolt hole is provided at one end of the first transmission rod (53) close to the second transmission rod (54), and the adjustment member (55) is an adjustment bolt inserted into the bolt hole.

4. A transmission assembly according to claim 1, characterized in that: The slider shaft (52) is deviated from the axial direction and recessed toward one side of the first transmission rod (53) to form a guide sliding hole (5202), and the first transmission rod (53) can be slidably inserted in the guide sliding hole (5202).

5. A transmission assembly according to claim 4, characterized in that: The shaft sleeve (51) comprises a sleeve body (511) with a slide groove (5111) at the end thereof and a cover plate (512) covering the slide groove (5111); the cover plate (512) is provided with a clearance hole; the slider shaft (52) comprises a sliding portion (521) slidably arranged in the slide groove (5111) and a connecting portion (522) extending from the sliding portion (521) through the clearance hole; the connecting portion (522) is used for fixedly connecting to the knurling wheel (30) of the knurling mechanism (100).

6. A knurling mechanism, characterized in that: include: Knurled sleeve (10); A knurling die (20), the knurling die (20) being fixedly mounted on one end of the knurling sleeve (10) and having a knurling hole; A knurling wheel (30), wherein the knurling wheel (30) is located in the knurling hole and the diameter of the knurling wheel (30) is smaller than the diameter of the knurling hole; A transmission assembly according to any one of claims 1 to 5, wherein the slider shaft (52) of the transmission assembly (50) is fixedly connected to the knurled wheel (30), and the shaft sleeve (51) of the transmission assembly (50) is rotatably inserted into the knurled sleeve (10); as well as A driving assembly (40), wherein the driving assembly (40) drives a first transmission rod (53) connected to the transmission assembly (50) to drive the knurling wheel (30) to rotate, and the driving assembly (40) drives a second transmission rod (54) connected to the transmission assembly (50) to drive the slider shaft (52) to deviate from the central axis of the sleeve (51) so that the knurling wheel (30) is pressed against the knurling die (20).

7. A knurling mechanism according to claim 6, characterized in that: The knurled sleeve (10) comprises a knurled inner sleeve (11), a knurled outer sleeve (12) detachably sleeved on the knurled inner sleeve (11), and a clamp (13) sleeved on the knurled outer sleeve (12).

8. A paper cup bottom sealing device, characterized in that: The invention comprises a driving device (400), a synchronous seat (500), and a hot air mechanism (300), a bottom rolling mechanism (200), and a knurling mechanism (100) installed on the synchronous seat (500); the driving device (400) is drivingly connected to the synchronous seat (500).

9. The paper cup bottom sealing device according to claim 8, characterized in that: The synchronous seat (500) comprises a connecting rod (5003) and a mounting plate (5001) and a synchronous plate (5002) arranged at intervals in the vertical direction, the two ends of the connecting rod (5003) are respectively fixedly connected to the mounting plate (5001) and the synchronous plate (5002), the driving device (400) comprises a servo motor (4001) and a plurality of cams (4003) arranged coaxially and abutting against the synchronous plate (5002), and the paper cup bottom sealing device further comprises an oil storage tank (600), and the oil storage tank (600) is covered on the cam (4003).

10. The paper cup bottom sealing device according to claim 8, characterized in that: The hot air mechanism (300) comprises a hot air body (3001) and a hot air generator (3002) connected to the hot air body (3001), the air inlet of the hot air body (3001) faces downward, the hot air generator (3002) is located directly below the hot air body (3001), and the air outlet of the hot air generator (3002) is correspondingly connected to the air inlet of the hot air body (3001).

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