A device for oiling a plate cylinder of a gilding machine

Abstract

The utility model relates to a kind of oiling device for gold stamping machine plate roller replacement.It is related to gold stamping printing equipment technical field.The application specifically includes oiling funnel, the top of oiling funnel is equipped with oil inlet, bottom is equipped with oil outlet, the cross-sectional area of oil inlet is greater than the cross-sectional area of oil outlet;It also includes opening adjusting mechanism on oiling funnel, opening adjusting mechanism extends from oil inlet to oiling funnel, to open or close oil outlet.The opening adjusting mechanism of the utility model opens the oil outlet of oiling funnel, and the heat conducting oil in oiling funnel can flow into gold stamping plate roller from oil outlet, so that the oiling operation of gold stamping plate roller is simple and convenient, easy to implement, improve production efficiency;When opening adjusting mechanism closes the oil outlet of oiling funnel, the heat conducting oil in oiling funnel cannot flow out from oil outlet, so as to control the oiling amount of gold stamping plate roller, avoid heat conducting oil overflow, and further guarantee the personal safety of operator.

Description

Technical Field

[0001] This utility model relates to the technical field of hot stamping printing equipment, and in particular to a hot stamping machine printing roller. Replacement of refueling equipment. Background Technology

[0002] Hot stamping is a process in which electroplated aluminum foil is applied to the surface of a substrate under specific temperature and pressure. The printed images and text exhibit a strong metallic luster, with bright and eye-catching colors that never fade. In particular, gold and silver electroplated aluminum foil, with its magnificent and elegant decoration, embellishes the surface of printed materials, enhances the artistry of the printed products, and plays a role in highlighting the theme. Therefore, hot stamping is widely used on high-end and exquisite packaging, trademarks, calendars, and book covers. Hot stamping machines are the equipment used to complete the hot stamping process.

[0003] During the conversion process of a hot stamping machine, it is necessary to replace the matching hot stamping roller. The replacement of the hot stamping roller mainly includes the following steps: 1. Remove the hot stamping roller from the hot stamping machine; 2. Remove the heating element used to heat the heat transfer oil in the hot stamping roller from the roller; 3. Drain the oil from the replaced hot stamping roller, expelling the heat transfer oil; 4. Add the drained heat transfer oil to the newly replaced hot stamping roller; 5. Insert the heating element into the newly replaced hot stamping roller and install the new hot stamping roller on the hot stamping machine.

[0004] In existing technology, the step of adding the discharged heat transfer oil to a newly replaced hot stamping roller is usually done using an oiling funnel. However, conventional oiling funnels cannot control the amount of oil added, and during the oiling process, heat transfer oil is prone to overflow. Since the heat transfer oil has a high temperature, the overflowing oil can easily burn the operator, thus causing a safety accident. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the prior art by providing a lubrication device for changing the hot stamping machine roller, which makes the lubrication operation of the hot stamping roller simple, convenient and easy to implement, and can control the amount of oil added to prevent the heat transfer oil from overflowing, thereby improving production efficiency and ensuring the personal safety of operators.

[0006] This utility model proposes an oiling device for changing the printing roller of a hot stamping machine, including an oiling funnel, wherein the top of the oiling funnel is provided with an oil inlet and the bottom is provided with an oil outlet, the cross-sectional area of ​​the oil inlet is larger than the cross-sectional area of ​​the oil outlet; it also includes an opening adjustment mechanism provided on the oiling funnel, the opening adjustment mechanism extending from the oil inlet into the oiling funnel, for opening or closing the oil outlet.

[0007] Furthermore, the refueling funnel includes a cylindrical funnel body and a conical funnel nozzle, the funnel nozzle being integrally connected to the funnel body, the oil inlet connecting the top of the funnel body to the outside, and the oil outlet connecting the bottom of the funnel nozzle to the outside.

[0008] Furthermore, the refueling funnel also includes a grip handle disposed on the outer wall of the funnel body, one end of the grip handle being fixedly connected to the outer wall of the funnel body, and the other end extending away from the funnel body.

[0009] Furthermore, the opening adjustment mechanism includes a lever assembly located at the top of the refueling funnel, and a sealing member with one end connected to the lever assembly and the other end extending into the refueling funnel. The lever assembly drives the sealing member to open or close the oil outlet.

[0010] Furthermore, the lever assembly includes a support frame disposed at the top of the refueling funnel, and a rotating lever rotatably connected to the support frame in the middle. One end of the rotating lever extends above the refueling funnel, and the other end extends outside the refueling funnel. One end of the sealing member is connected to the end of the rotating lever extending above the refueling funnel.

[0011] Furthermore, the lever assembly also includes a pressing handle, which is located at one end of the rotating lever extending outward from the refueling funnel, and is used to operate the rotation of the rotating lever.

[0012] Furthermore, the outer wall of the refueling funnel is provided with a grip handle. One end of the grip handle is fixedly connected to the outer wall of the refueling funnel, and the other end extends away from the refueling funnel. The central axis of the pressing handle is located directly above the central axis of the grip handle.

[0013] Furthermore, the lever assembly also includes a tension spring with one end connected to the rotating lever and the other end connected to the support frame. The connection point between the support frame and the rotating lever is the first connection point, the connection point between the sealing member and the rotating lever is the second connection point, and the connection point between the tension spring and the rotating lever is the third connection point. The third connection point is located between the first connection point and the second connection point.

[0014] Furthermore, the support frame includes a support base with one end fixedly connected to the inner wall of the refueling funnel and the other end extending above the refueling funnel, and a support rod disposed at the end of the support base extending above the refueling funnel. The middle part of the rotating lever is sleeved on the support rod. The end of the support rod away from the support base is provided with an external thread. The support frame also includes a locking nut screwed into the external thread. The locking nut is used to lock or loosen the rotating lever.

[0015] Furthermore, the sealing component includes a connecting rod with one end attached to the rotating lever and the other end extending inside the refueling funnel, and a plug disposed at the end of the connecting rod extending inside the refueling funnel, the plug being used to open or close the oil outlet.

[0016] The lubrication device for changing the printing roller of a hot stamping machine proposed in this utility model has the following beneficial effects: (1) When the opening adjustment mechanism of this oiling device opens the oil outlet of the oiling funnel, the heat transfer oil is poured into the oiling funnel through the oil inlet. The heat transfer oil in the oiling funnel then flows into the hot stamping roller through the oil outlet, making the oiling operation of the hot stamping roller simple, convenient and easy to implement, and improving production efficiency. When the opening adjustment mechanism closes the oil outlet of the oiling funnel, the heat transfer oil poured into the oiling funnel cannot flow out from the oil outlet, thereby controlling the amount of oil added to the hot stamping roller, avoiding the overflow of heat transfer oil, and thus ensuring the personal safety of the operator. (2) The refueling funnel of this refueling device also includes a holding handle. The holding handle is set on the outer wall of the funnel body, and one end of the holding handle is fixedly connected to the outer wall of the funnel body, while the other end extends away from the funnel body. This allows the operator to hold the handle away from the funnel body, preventing the hot oil from splashing out and scalding the operator during the process of pouring the hot oil into the funnel body through the oil inlet, thereby ensuring the personal safety of the operator. (3) The opening adjustment mechanism of this refueling device includes a lever assembly and a sealing component. The lever assembly is set at the top of the funnel body. One end of the sealing component is connected to the lever assembly, and the other end extends from the oil inlet at the top of the funnel body to the oil outlet at the bottom of the funnel. Thus, the sealing component is driven to move upward or downward through the lever assembly to open or close the oil outlet, thereby making the refueling operation of the hot stamping roller simple, convenient and easy to implement, and ensuring the personal safety of the operator. (4) The lever assembly of this refueling device also includes a pressing handle. By operating the pressing handle, the rotating lever rotates or rotates in the opposite direction around the connection point where it is rotatably connected to the support frame, thereby driving the sealing part to move up or down, so as to open or close the oil outlet, thus making the refueling operation of the hot stamping roller simple, convenient and easy to implement, and ensuring the personal safety of the operator. (5) The central axis of the pressing handle of this oiling device is set directly above the central axis of the holding handle, that is, the pressing handle is located directly above the holding handle, so that the operator can press or release the pressing handle while holding the holding handle, thereby enabling the oiling device to be operated with one hand, and further making the oiling operation of the hot stamping roller simple, convenient and easy to implement. (6) The support rod of this oiling device has an external thread at the end away from the support seat. The locking nut is screwed into the external thread. After the sealing part opens or closes the oil outlet, the locking nut is screwed into the external thread and abuts against the rotating lever, thereby locking the rotating lever so that the rotating lever can no longer rotate. This keeps the sealing part in the state of opening or closing the oil outlet, making the oiling operation of the hot stamping roller simple, convenient and easy to implement. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and constitute a part of this 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 denote similar elements.

[0018] Figure 1 This is a schematic diagram of the structure of an oiling device for changing the printing roller of a hot stamping machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an oiling funnel for changing the printing plate roller of a hot stamping machine, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the opening adjustment mechanism of an oiling device for changing the printing roller of a hot stamping machine, according to an embodiment of the present invention. Figure 4 This is an exploded view showing the connection between the rotating lever and the support frame of an oiling device for changing the printing roller of a hot stamping machine, according to an embodiment of the present invention.

[0019] In the diagram: 1. Oiling funnel; 11. Funnel body; 111. Oil inlet; 12. Funnel nozzle; 121. Oil outlet; 13. Handle; 2. Opening adjustment mechanism; 21. Support frame; 211. Support base; 212. Support rod; 2121. External thread; 213. Locking nut; 22. Rotating lever; 23. Press handle; 24. Tension spring; 25. Connecting rod; 26. Plug. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-4An embodiment of the present invention provides an oiling device for changing the printing roller of a hot stamping machine, comprising an oiling funnel 1, wherein the top of the oiling funnel 1 is provided with an oil inlet 111 and the bottom is provided with an oil outlet 121, the cross-sectional area of ​​the oil inlet 111 being larger than the cross-sectional area of ​​the oil outlet 121; and further comprising an opening adjustment mechanism 2 disposed on the oiling funnel 1, the opening adjustment mechanism 2 extending from the oil inlet 111 into the oiling funnel 1, for opening or closing the oil outlet 121.

[0022] In this application, the refueling device includes a refueling funnel 1 and an opening adjustment mechanism 2. The refueling funnel 1 has an oil inlet 111 at the top and an oil outlet 121 at the bottom, and the cross-sectional area of ​​the oil inlet 111 is larger than that of the oil outlet 121. The opening adjustment mechanism 2 is disposed on the refueling funnel 1 and extends from the oil inlet 111 into the refueling funnel 1. The opening adjustment mechanism 2 can open or close the oil outlet 121 of the refueling funnel 1.

[0023] When the opening adjustment mechanism 2 opens the oil outlet 121 of the oiling funnel 1, the heat transfer oil is poured into the oiling funnel 1 through the oil inlet 111. The heat transfer oil in the oiling funnel 1 then flows into the hot stamping roller through the oil outlet 121, making the oiling operation of the hot stamping roller simple, convenient and easy to implement, and improving production efficiency.

[0024] When the opening adjustment mechanism 2 closes the oil outlet 121 of the oiling funnel 1, the heat transfer oil poured into the oiling funnel 1 cannot flow out from the oil outlet 121, thereby controlling the amount of oil added to the hot stamping roller, preventing the heat transfer oil from overflowing, and thus ensuring the personal safety of the operator.

[0025] In this embodiment, the refueling funnel 1 includes a funnel body 11 and a funnel nozzle 12. The funnel body 11 is cylindrical, and the funnel nozzle 12 is conical, with the funnel nozzle 12 integrally connected to the funnel body 11. An oil inlet 111 is located at the top of the funnel body 11, thereby connecting the top of the funnel body 11 to the outside world, allowing heat transfer oil to flow into the funnel body 11 through the oil inlet 111.

[0026] The oil outlet 121 is located at the bottom of the funnel nozzle 12, thereby connecting the bottom of the funnel nozzle 12 with the outside world. This allows the heat transfer oil flowing into the funnel body 11 to flow into the hot stamping roller from the oil outlet 121 after passing through the funnel body 11 and the funnel nozzle 12. This makes the oiling operation of the hot stamping roller simple, convenient, and easy to implement, thereby improving production efficiency.

[0027] In this embodiment, the refueling funnel 1 also includes a grip handle 13, which is disposed on the outer wall of the funnel body 11. One end of the grip handle 13 is fixedly connected to the outer wall of the funnel body 11, and the other end extends away from the funnel body 11.

[0028] When lubricating the hot stamping roller, the operator holds the lubrication device by gripping the handle 13. Since the handle 13 extends away from the funnel body 11, the operator is kept away from the funnel body 11 when holding it, preventing the hot oil from splashing out and scalding the operator during the pouring of the hot oil into the funnel body 11 through the oil inlet 111, thus ensuring the operator's personal safety.

[0029] In this embodiment, the opening adjustment mechanism 2 includes a lever assembly and a sealing member. The lever assembly is disposed at the top of the refueling funnel 1, and one end of the sealing member is connected to the lever assembly, while the other end extends into the refueling funnel 1. Specifically, the lever assembly is disposed at the top of the funnel body 11, and one end of the sealing member is connected to the lever assembly, while the other end extends from the oil inlet 111 at the top of the funnel body 11 to the oil outlet 121 at the bottom of the funnel nozzle 12.

[0030] The lever assembly drives the sealing element to move upward, moving the sealing element away from the oil outlet 121, thereby opening the oil outlet 121. The heat transfer oil poured into the funnel body 11 flows through the funnel body 11 and the funnel nozzle 12, and then flows from the oil outlet 121 into the hot stamping roller. This makes the oiling operation of the hot stamping roller simple, convenient, and easy to implement, thereby improving production efficiency.

[0031] The sealing component is driven downward by the lever assembly until it is inserted into the oil outlet 121 at the bottom of the funnel nozzle 12, thereby sealing the oil outlet 121 and preventing the heat transfer oil poured into the oil filling funnel 1 from flowing out of the oil outlet 121. This controls the amount of oil added to the hot stamping roller, prevents the heat transfer oil from overflowing, and ensures the personal safety of the operator.

[0032] Specifically, in this embodiment, the lever assembly includes a support frame 21 disposed at the top of the refueling funnel 1, and a rotating lever 22 rotatably connected to the support frame 21 in the middle. One end of the rotating lever 22 extends above the refueling funnel 1, and the other end extends outside the refueling funnel 1. One end of the sealing member is connected to the end of the rotating lever 22 extending above the refueling funnel 1.

[0033] In this application, the lever assembly includes a support frame 21 and a rotating lever 22. The support frame 21 is disposed on the top of the funnel body 11 of the refueling funnel 1, and the middle part of the rotating lever 22 is rotatably connected to the support frame 21. Thus, under the support of the support frame 21, one end of the rotating lever 22 extends above the refueling funnel 1, and the other end extends outside the refueling funnel 1.

[0034] One end of the sealing element is connected to the end of the rotating lever 22 that extends above the oiling funnel 1. Thus, the rotating lever 22 rotates around the connection point where it is rotatably connected to the support frame 21, causing the sealing element to move upward in the funnel nozzle 12, thereby opening the oil outlet 121.

[0035] By rotating lever 22 in the opposite direction around the connection point where it is rotatably connected to support frame 21, the sealing component moves downward in funnel nozzle 12, thereby sealing oil outlet 121, thus controlling the amount of oil added to hot stamping roller, preventing heat transfer oil from overflowing, and thus ensuring the personal safety of operators.

[0036] In this embodiment, the lever assembly also includes a pressing handle 23, which is located at one end of the rotating lever 22 extending outward from the oiling funnel 1. When the operator presses the pressing handle 23 downward, the rotating lever 22 is driven to rotate around the connection point where it is rotatably connected to the support frame 21, thereby causing the sealing member to move upward and open the oil outlet 121.

[0037] By releasing the pressing handle 23, the lever 22 rotates in the opposite direction around the connection point between the sealing component and the support frame 21 under the weight of the sealing component itself, causing the sealing component to move downward and close the oil outlet 121. This makes the oiling operation of the hot stamping roller simple, convenient and easy to implement, and ensures the personal safety of the operator.

[0038] Furthermore, in this embodiment, a handle 13 is provided on the outer wall of the funnel body 11. When applying oil to the hot stamping roller, the operator holds the oiling device by holding the handle 13. Since one end of the handle 13 is fixedly connected to the outer wall of the funnel body 11, and the other end extends away from the funnel body 11, the rotating lever 22 is located at the top of the funnel body 11 under the support of the support frame 21, and the pressing handle 23 is located at the end of the rotating lever 22 that extends outside the oiling funnel 1.

[0039] Therefore, in this application, the central axis of the pressing handle 23 is set directly above the central axis of the grip handle 13, that is, the pressing handle 23 is located directly above the grip handle 13, so that the operator can press or release the pressing handle 23 while holding the grip handle 13, thereby enabling the oiling device to be operated with one hand, and further making the oiling operation of the hot stamping roller simple, convenient and easy to implement.

[0040] Furthermore, in this embodiment, the lever assembly also includes a tension spring 24, one end of which is connected to the rotating lever 22 and the other end of which is connected to the support frame 21. The connection point between the support frame 21 and the rotating lever 22 is considered the first connection point, the connection point between the sealing member and the rotating lever 22 is considered the second connection point, and the connection point between the tension spring 24 and the rotating lever 22 is considered the third connection point, which is located between the first and second connection points.

[0041] When the operator presses the handle 23 down, driving the rotating lever 22 to rotate around the first connection point, the tension spring 24 is stretched. When the operator releases the handle 23, under the elastic force of the tension spring 24 restoring its own deformation and the gravity of the sealing component itself, the rotating lever 22 rotates in the opposite direction around the first connection point, causing the sealing component to move downward in the funnel nozzle 12, thus closing the oil outlet 121. This makes the oiling operation of the hot stamping roller simple, convenient and easy to implement.

[0042] Specifically, in this embodiment, the support frame 21 includes a support base 211 with one end fixedly connected to the inner wall of the refueling funnel 1 and the other end extending above the refueling funnel 1, and a support rod 212 provided at the end of the support base 211 extending above the refueling funnel 1. The middle part of the rotating lever 22 is sleeved on the support rod 212. The end of the support rod 212 away from the support base 211 is provided with an external thread 2121. The support frame 21 also includes a locking nut 213 screwed to the external thread 2121. The locking nut 213 is used to lock or loosen the rotating lever 22.

[0043] In this application, the support frame 21 includes a support base 211, a support rod 212 and a locking nut 213. Specifically, one end of the support base 211 is fixedly connected to the inner wall of the funnel body 11, and the other end extends to the top of the funnel body 11. The support rod 212 is disposed at the end of the support base 211 that extends to the top of the funnel body 11.

[0044] The middle part of the rotating lever 22 is sleeved on the support rod 212, so the first connection point is the central axis of the support rod 212; the end of the support rod 212 away from the support seat 211 is provided with an external thread 2121, and the locking nut 213 is screwed into the external thread 2121.

[0045] When the locking nut 213 is screwed into the external thread 2121 and does not abut against the rotating lever 22, the rotating lever 22 is loosened. At this time, the operator presses the pressing handle 23 downward, driving the rotating lever 22 to rotate around the central axis of the support rod 212, thereby driving the sealing part to move upward in the funnel nozzle 12, so that it opens the oil outlet 121.

[0046] When the operator releases the pressing handle 23, the spring force of the tension spring 24 restoring its own deformation and the gravity of the sealing component cause the rotating lever 22 to rotate in the opposite direction around the central axis of the support rod 212, which drives the sealing component to move downward in the funnel nozzle 12, thereby closing the oil outlet 121.

[0047] After the sealing component opens or closes the oil outlet 121, the locking nut 213 is screwed to the external thread 2121 and abuts against the rotating lever 22, thereby locking the rotating lever 22 and preventing it from rotating. This keeps the sealing component in the state of opening or closing the oil outlet 121, making the oiling operation of the hot stamping roller simple, convenient and easy to implement.

[0048] Specifically, in this embodiment, the sealing component includes a connecting rod 25 with one end attached to the rotating lever 22 and the other end extending inside the refueling funnel 1, and a plug 26 provided at the end of the connecting rod 25 extending inside the refueling funnel 1. The plug 26 is used to open or close the oil outlet 121.

[0049] In this application, the sealing component includes a connecting rod 25 and a plug 26. One end of the connecting rod 25 is attached to the rotating lever 22, and the other end extends from the oil inlet 111 at the top of the funnel body 11 to the oil outlet 121 at the bottom of the funnel nozzle 12. The plug 26 is located at the end of the connecting rod 25 that extends to the oil outlet 121.

[0050] When the rotating lever 22 rotates around the central axis of the support rod 212, the connecting rod 25 drives the plug 26 to move upward in the funnel 12, causing the plug 26 to move away from the oil outlet 121, thereby opening the oil outlet 121.

[0051] When the rotating lever 22 rotates in the opposite direction around the central axis of the support rod 212, the connecting rod 25 drives the plug 26 to move downward in the funnel 12 until the plug 26 is inserted into the oil outlet 121 at the bottom of the funnel 12, thereby sealing the oil outlet 121, thus controlling the amount of oil added to the hot stamping roller, preventing the heat transfer oil from overflowing, and ensuring the personal safety of the operator.

[0052] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lubrication device for changing the printing roller of a hot stamping machine, characterized in that: The system includes a refueling funnel (1), which has an oil inlet (111) at the top and an oil outlet (121) at the bottom. The cross-sectional area of ​​the oil inlet (111) is larger than that of the oil outlet (121). The system also includes an opening adjustment mechanism (2) provided on the refueling funnel (1), which extends from the oil inlet (111) into the refueling funnel (1) to open or close the oil outlet (121).

2. The lubrication device for changing the printing plate roller of a hot stamping machine as described in claim 1, characterized in that: The refueling funnel (1) includes a cylindrical funnel body (11) and a conical funnel nozzle (12). The funnel nozzle (12) is integrally connected to the funnel body (11). The oil inlet (111) connects the top of the funnel body (11) to the outside, and the oil outlet (121) connects the bottom of the funnel nozzle (12) to the outside.

3. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 2, characterized in that: The refueling funnel (1) also includes a grip handle (13) disposed on the outer wall of the funnel body (11). One end of the grip handle (13) is fixedly connected to the outer wall of the funnel body (11), and the other end extends away from the funnel body (11).

4. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 1, characterized in that: The opening adjustment mechanism (2) includes a lever assembly located at the top of the refueling funnel (1) and a sealing member with one end connected to the lever assembly and the other end extending into the refueling funnel (1). The lever assembly drives the sealing member to open or close the oil outlet (121).

5. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 4, characterized in that: The lever assembly includes a support frame (21) located at the top of the refueling funnel (1) and a rotating lever (22) rotatably connected to the support frame (21) in the middle. One end of the rotating lever (22) extends above the refueling funnel (1) and the other end extends outside the refueling funnel (1). One end of the sealing member is connected to the end of the rotating lever (22) extending above the refueling funnel (1).

6. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 5, characterized in that: The lever assembly also includes a pressing handle (23), which is located at one end of the rotating lever (22) extending outside the refueling funnel (1) and is used to operate the rotation of the rotating lever (22).

7. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 6, characterized in that: The outer wall of the refueling funnel (1) is provided with a grip handle (13). One end of the grip handle (13) is fixedly connected to the outer wall of the refueling funnel (1), and the other end extends away from the refueling funnel (1). The central axis of the pressing handle (23) is located directly above the central axis of the grip handle (13).

8. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 5, characterized in that: The lever assembly also includes a tension spring (24) with one end connected to the rotating lever (22) and the other end connected to the support frame (21). The connection point between the support frame (21) and the rotating lever (22) is the first connection point, the connection point between the sealing member and the rotating lever (22) is the second connection point, and the connection point between the tension spring (24) and the rotating lever (22) is the third connection point. The third connection point is located between the first connection point and the second connection point.

9. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 5, characterized in that: The support frame (21) includes a support base (211) with one end fixedly connected to the inner wall of the refueling funnel (1) and the other end extending above the refueling funnel (1), and a support rod (212) provided at the end of the support base (211) extending above the refueling funnel (1). The middle part of the rotating lever (22) is sleeved on the support rod (212). The end of the support rod (212) away from the support base (211) is provided with an external thread (2121). The support frame (21) also includes a locking nut (213) screwed to the external thread (2121). The locking nut (213) is used to lock or loosen the rotating lever (22).

10. The lubrication device for changing the printing roller of a hot stamping machine as described in claim 5, characterized in that: The sealing component includes a connecting rod (25) with one end attached to the rotating lever (22) and the other end extending inside the refueling funnel (1), and a plug (26) provided at one end of the connecting rod (25) extending inside the refueling funnel (1), the plug (26) being used to open or close the oil outlet (121).

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