Safety devices and tools for the maintenance of water transfer printing dryers

Abstract

This application provides a safety device and tool for the maintenance of a water transfer printing dryer. The safety device includes a support frame and an anti-detachment guard. The support frame has a communicating limiting groove and a guide opening; the guide opening is used to movably mount the piston rod of the lifting hydraulic cylinder, placing the piston rod within the limiting groove. One end of the support frame abuts against the connecting seat at the end of the piston rod, and the other end abuts against the end face of the lifting hydraulic cylinder. The anti-detachment guard is detachably installed on the support frame and is positioned at the guide opening. This invention, through the added support frame, provides a reaction force for the piston rod to retract in case of failure, thus providing support for the connecting seat at the end of the piston rod. This reduces the risk of hydraulic failure in the lifting hydraulic cylinder, preventing the upper housing from overturning and collapsing, effectively ensuring the safety of equipment maintenance personnel and significantly improving the operational safety of the lifting hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of water transfer printing equipment, and in particular to a safety device and tool for the maintenance of a water transfer printing dryer. Background Technology

[0002] Water transfer printing technology uses water as a medium, with a special medium (special paper or plastic film) as an intermediate carrier, to transfer images and text onto the surface of the substrate, thereby achieving the printing function.

[0003] Drying is a crucial step in the production of water transfer printing paper (water-coated transfer paper or water-marked transfer paper). Currently, tunnel-type water transfer printing dryers are commonly used for drying. Hot air, generated by heating the paper, circulates within the drying chamber, utilizing convection heat transfer to heat the paper and coating. This is the most widely used drying method. Figure 1 As shown, the oven 1 mainly consists of an upper box 11 that can be moved and flipped and a lower box 12 with conveyor rollers. The upper box 11 is driven by a lifting hydraulic cylinder 2 to flip and open or flip and cover the lower box 12. When the upper box 11 flips and covers the lower box 12, a tunnel-type drying chamber 1201 is formed between the upper box 11 and the lower box 12. Hot air is introduced into the tunnel-type drying chamber 1201 through a heating system for drying.

[0004] Generally, during routine maintenance, the lifting hydraulic cylinder 2 located on one side of the drying oven 1 needs to be activated. The piston rod pushes the upper chamber 11 relative to the lower chamber 12 to tilt and open, thus supporting and opening the tunnel-type drying chamber 1201 for maintenance personnel to inspect its interior. However, considering the risk of hydraulic failure in the lifting hydraulic cylinder 2—that is, if hydraulic failure occurs, the piston rod will immediately retract, causing the upper chamber 11 to tilt and press down, posing a serious threat to the safety of the maintenance personnel—it is necessary to optimize the structure of the lifting hydraulic cylinder 2 to ensure the safety of maintenance personnel and improve its operational safety. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a safety device and tool for the maintenance of a water transfer printing dryer that can prevent the upper box from tipping over and pressing down, ensure the safety of equipment maintenance personnel, and effectively improve the safety of the lifting hydraulic cylinder.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A safety device for the maintenance of a water transfer printing dryer includes:

[0008] The support sleeve has a connected limiting sleeve groove and a guide opening; the guide opening is used to movably fit the piston rod of the lifting hydraulic cylinder, so that the piston rod is placed in the limiting sleeve groove; one end of the support sleeve is used to abut against the connecting seat at the end of the piston rod, and the other end of the support sleeve is used to abut against the end face of the lifting hydraulic cylinder.

[0009] An anti-detachment barrier is provided, which is detachably installed on the support frame and is located at the guide opening.

[0010] In one embodiment, the cross-section of the support sleeve is U-shaped.

[0011] In one embodiment, the support sleeve has a through hole group at one end near the guide opening that communicates with the limiting sleeve groove. The through hole group includes two through holes arranged opposite each other. The anti-detachment barrier is inserted into the two through holes in sequence to block the piston rod.

[0012] In one embodiment, the anti-detachment barrier includes a pin and a limiting strip; the pin is inserted into two through holes in sequence, one end of the pin forms an anti-detachment part, the end of the pin opposite to the anti-detachment part is provided with a limiting hole, and the limiting strip is inserted into the limiting hole.

[0013] In one embodiment, the limiting strip is a bent strip structure.

[0014] In one embodiment, the limiting insert is interference-fitted with the limiting hole.

[0015] In one embodiment, the support sleeve is a one-piece molded structure.

[0016] In one embodiment, the anti-detachment barrier is connected to the support frame by a chain.

[0017] A safety tool for the maintenance of a water transfer printing dryer includes a lifting hydraulic cylinder and a safety device for the maintenance of the water transfer printing dryer as described in any of the above embodiments. The lifting hydraulic cylinder is rotatably mounted on the lower housing. The guide port is movably sleeved on the piston rod of the lifting hydraulic cylinder. One end of the support sleeve abuts against the connecting seat at the end of the piston rod. The connecting seat is rotatably connected to the upper housing.

[0018] In one embodiment, the lifting hydraulic cylinder is hinged to the lower housing, and the connecting seat is hinged to the upper housing.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] After the piston rod of the lifting hydraulic cylinder pushes the upper housing to tilt and open, the support sleeve is movably fitted onto the piston rod through the guide port, placing the piston rod within the limiting sleeve groove. One end of the support sleeve abuts against the connecting seat at the end of the piston rod, and the other end abuts against the end face of the lifting hydraulic cylinder. An anti-detachment retaining device is then installed at the guide port to form a retaining wall around the piston rod, ensuring the support sleeve remains movably fitted onto the piston rod. This added support sleeve provides a reaction force in case of piston rod failure and retraction, thus providing support to the connecting seat at the end of the piston rod. This reduces the risk of hydraulic failure in the lifting hydraulic cylinder, preventing the upper housing from tilting and collapsing, effectively ensuring the safety of equipment maintenance personnel and significantly improving the operational safety of the lifting hydraulic cylinder. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of an existing drying oven and lifting hydraulic cylinder;

[0023] Figure 2 This is a schematic diagram of a safety device for maintenance of a water transfer printing dryer in one embodiment.

[0024] Figure 3 for Figure 2 The diagram shows the structure of the safety device used for maintenance of the water transfer printing dryer.

[0025] Figure 4 for Figure 2 The diagram shows an exploded view of the safety device used for maintenance of the water transfer printing dryer.

[0026] Figure 5 for Figure 4 An enlarged view of point A of the safety device used for maintenance of the water transfer printing dryer shown.

[0027] Reference numerals: Safety device 10 for maintenance of water transfer printing dryer; Oven 1; Upper chamber 11; Lower chamber 12; Tunnel drying chamber 1201; Lifting hydraulic cylinder 2; Piston rod 21; Connecting seat 22; Support sleeve 100; Limiting sleeve groove 101; Guide port 102; Through hole group 103; Through hole 104; Anti-detachment barrier 200; Insert pin 210; Anti-detachment part 2110; Limiting hole 2120; Limiting insert 220. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This disclosure provides a safety device for the maintenance of a water transfer printing dryer, including a support frame and an anti-detachment barrier. The support frame has a communicating limiting groove and a guide opening; the guide opening is used to movably mount a piston rod of a lifting hydraulic cylinder, so that the piston rod is placed in the limiting groove; one end of the support frame is used to abut against a connecting seat at the end of the piston rod, and the other end of the support frame is used to abut against the end face of the lifting hydraulic cylinder; the anti-detachment barrier is detachably installed on the support frame, and the anti-detachment barrier is limited to the guide opening.

[0032] Please see Figures 1 to 5 To better understand the safety device 10 for maintenance of the water transfer printing dryer in this application, the following further explanation of the safety device 10 for maintenance of the water transfer printing dryer is provided:

[0033] A safety device 10 for maintenance of a water transfer printing dryer according to one embodiment includes a support frame 100 and an anti-detachment barrier 200. The support frame 100 has a communicating limiting groove 101 and a guide opening 102; the guide opening 102 is used to movably mount the piston rod 21 of the lifting hydraulic cylinder 2, so that the piston rod 21 is placed in the limiting groove 101; one end of the support frame 100 is used to abut against the connecting seat 22 at the end of the piston rod 21, and the other end of the support frame 100 is used to abut against the end face of the lifting hydraulic cylinder 2; the anti-detachment barrier 200 is detachably installed on the support frame 100, and the anti-detachment barrier 200 is limited to the guide opening 102.

[0034] In this embodiment, after the piston rod 21 of the lifting hydraulic cylinder 2 pushes the upper housing 11 to flip open to a predetermined position, the support sleeve 100 is movably fitted onto the piston rod 21 through the guide port 102, so that the piston rod 21 is placed in the limiting sleeve groove 101, one end of the support sleeve 100 abuts against the connecting seat 22 at the end of the piston rod 21, and the other end of the support sleeve 100 abuts against the end face of the lifting hydraulic cylinder 2. Then, the anti-detachment barrier 200 is set at the guide port 102 to form a barrier against the piston rod 21 together with the support sleeve 100, so that the support sleeve 100 is always movably fitted onto the piston rod 21. By adding the support sleeve 100, a reaction force is provided for the piston rod 21 to fail and retract, that is, a supporting force is provided for the connecting seat 22 at the end of the piston rod 21, reducing the risk of hydraulic failure of the lifting hydraulic cylinder 2, thereby preventing the upper housing 11 from flipping and pressing down, better ensuring the life safety of equipment maintenance personnel, and effectively improving the safety of use of the lifting hydraulic cylinder 2.

[0035] like Figure 1 and Figure 2 As shown, it should be noted that in this embodiment, the connector 22 is a common type of connector installed at the end of the piston rod for movably connecting with the driven component. That is, the connector 22 is an existing structure and will not be described in detail here.

[0036] like Figure 2 and Figure 3 As shown, in one embodiment, the cross-section of the support sleeve 100 is U-shaped. Thus, the limiting groove 101 can reliably limit the cylindrical piston rod 21, ultimately causing one end of the support sleeve 100 to abut against the connecting seat 22 at the end of the piston rod 21, and the other end of the support sleeve 100 to abut against the end face of the lifting hydraulic cylinder 2. This provides a reaction force for the piston rod 21 to retract in case of failure, i.e., provides support force for the connecting seat 22 at the end of the piston rod 21.

[0037] like Figures 3 to 5As shown, in one embodiment, the support sleeve 100 has a through hole group 103 connected to the limiting sleeve groove 101 at one end near the guide port 102. The through hole group 103 includes two through holes 104 arranged opposite to each other. The anti-detachment barrier 200 is inserted into the two through holes 104 in sequence to block the piston rod 21.

[0038] It is understood that, since the cross-section of the support sleeve 100 is U-shaped, the two oppositely arranged through holes 104 are located on the two side walls of the guide opening 102 of the support sleeve 100. Thus, the anti-detachment retaining members 200 are sequentially inserted into the two through holes 104 to form a retaining wall around the piston rod 21 together with the support sleeve 100, ensuring that the support sleeve 100 is always movably fitted onto the piston rod 21. Specifically, in this embodiment, there are two through hole groups 103 and two anti-detachment retaining members 200. The two anti-detachment retaining members 200 are arranged in a one-to-one correspondence with the two through hole groups 103, and the through hole groups 103 are distributed at both ends of the support sleeve 100. Thus, the arrangement of the two anti-detachment retaining members 200 effectively improves the structural stability of the support sleeve 100 movably fitted onto the piston rod 21, prevents the support sleeve 100 from falling off, and improves the safety of the lifting hydraulic cylinder 2.

[0039] like Figures 3 to 5 As shown, in one embodiment, the anti-detachment guard 200 includes a pin 210 and a limiting strip 220. The pin 210 is sequentially inserted into two through holes 104. One end of the pin 210 forms an anti-detachment portion 2110, and the end of the pin 210 facing away from the anti-detachment portion 2110 has a limiting hole 2120. The limiting strip 220 is inserted into the limiting hole 2120. This ensures that the anti-detachment portion 2110 and the limiting strip 220 abut against the outer walls of both sides of the support sleeve 100, preventing the pin 210 from dislodging from the through holes 104. This effectively improves the structural stability of the support sleeve 100 movably fitted onto the piston rod 21, prevents the support sleeve 100 from falling off, and improves the safety of the lifting hydraulic cylinder 2.

[0040] like Figure 5 As shown, in one embodiment, the limiting insert 220 is a bent strip structure. In another embodiment, the limiting insert 220 is interference-fitted with the limiting hole 2120. This improves the structural stability of the limiting insert 220 inserted into the limiting hole 2120.

[0041] like Figure 4 and Figure 5As shown, in one embodiment, the support sleeve 100 is an integrally formed structure. This ensures the structural strength of the support sleeve 100, enabling it to provide a reaction force for the piston rod 21 in case of failure and retraction, i.e., to provide sufficient support for the connecting seat 22 at the end of the piston rod 21, thereby preventing the upper housing 11 from overturning and pressing down, ensuring the safety of equipment maintenance personnel, and effectively improving the operational safety of the lifting hydraulic cylinder 2.

[0042] like Figures 3 to 5 As shown, in one embodiment, the anti-detachment barrier 200 is connected to the support sleeve 100 by a chain (not shown). This prevents the anti-detachment barrier 200 from being easily lost after disassembly and assembly. Furthermore, specifically, the pin 210 is connected to the support sleeve 100 by a chain; one end of the chain is fixedly connected to the support sleeve 100, and the other end is connected to the anti-detachment part 2110, to prevent the pin 210 from being easily lost after disassembly and assembly.

[0043] This application also provides a safety tool for the maintenance of a water transfer printing dryer, including a lifting hydraulic cylinder 2 and a safety device 10 for the maintenance of a water transfer printing dryer as described in any of the above embodiments. The lifting hydraulic cylinder 2 is rotatably mounted on the lower housing 12. The guide port 102 is movably sleeved on the piston rod 21 of the lifting hydraulic cylinder 2. One end of the support sleeve 100 abuts against the connecting seat 22 at the end of the piston rod 21. The connecting seat 22 is rotatably connected to the upper housing 11.

[0044] In this embodiment, after the piston rod 21 of the lifting hydraulic cylinder 2 pushes the upper housing 11 to flip open to a predetermined position, the support sleeve 100 is movably fitted onto the piston rod 21 through the guide port 102, so that the piston rod 21 is placed in the limiting sleeve groove 101, one end of the support sleeve 100 abuts against the connecting seat 22 at the end of the piston rod 21, and the other end of the support sleeve 100 abuts against the end face of the lifting hydraulic cylinder 2. Then, the anti-detachment barrier 200 is set at the guide port 102 to form a barrier against the piston rod 21 together with the support sleeve 100, so that the support sleeve 100 is always movably fitted onto the piston rod 21. By adding the support sleeve 100, a reaction force is provided for the piston rod 21 to fail and retract, that is, a supporting force is provided for the connecting seat 22 at the end of the piston rod 21, reducing the risk of hydraulic failure of the lifting hydraulic cylinder 2, thereby preventing the upper housing 11 from flipping and pressing down, better ensuring the life safety of equipment maintenance personnel, and effectively improving the safety of use of the lifting hydraulic cylinder 2.

[0045] like Figures 1 to 3As shown, in one embodiment, the lifting hydraulic cylinder 2 is hinged to the lower housing 12, and the connecting seat 22 is hinged to the upper housing 11. Thus, the lifting hydraulic cylinder 2 and the connecting seat 22 are combined with multiple degrees of freedom. The lifting hydraulic cylinder 2 drives the upper housing 11 to flip open or flip over to cover the lower housing 12, specifically causing the upper housing 11 to move around the Z-axis whether flipping open or flipping over to cover.

[0046] It should be noted that the structural design of the upper box 11, which rotates around the Z-axis when flipped open or when the cover is flipped closed, is an existing structure and will not be described in detail here.

[0047] Compared with the prior art, the present invention has at least the following advantages:

[0048] After the piston rod of the lifting hydraulic cylinder pushes the upper housing to tilt and open, the support sleeve is movably fitted onto the piston rod through the guide port, placing the piston rod within the limiting sleeve groove. One end of the support sleeve abuts against the connecting seat at the end of the piston rod, and the other end abuts against the end face of the lifting hydraulic cylinder. An anti-detachment retaining device is then installed at the guide port to form a retaining wall around the piston rod, ensuring the support sleeve remains movably fitted onto the piston rod. This added support sleeve provides a reaction force in case of piston rod failure and retraction, thus providing support to the connecting seat at the end of the piston rod. This reduces the risk of hydraulic failure in the lifting hydraulic cylinder, preventing the upper housing from tilting and collapsing, effectively ensuring the safety of equipment maintenance personnel and significantly improving the operational safety of the lifting hydraulic cylinder.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A safety device for the maintenance of a water transfer printing dryer, characterized in that, include: The support sleeve has a connected limiting sleeve groove and a guide opening; the guide opening is used to movably fit the piston rod of the lifting hydraulic cylinder, so that the piston rod is placed in the limiting sleeve groove; one end of the support sleeve is used to abut against the connecting seat at the end of the piston rod, and the other end of the support sleeve is used to abut against the end face of the lifting hydraulic cylinder. An anti-detachment barrier is provided, which is detachably installed on the support frame and is located at the guide opening.

2. The safety device for maintenance of the water transfer printing dryer according to claim 1, characterized in that, The cross-section of the support frame is U-shaped.

3. The safety device for maintenance of the water transfer printing dryer according to claim 2, characterized in that, The support sleeve has a through hole group at one end near the guide opening, which is connected to the limiting sleeve groove. The through hole group includes two through holes arranged opposite each other. The anti-detachment barrier is inserted into the two through holes in sequence to block the piston rod.

4. The safety device for maintenance of the water transfer printing dryer according to claim 3, characterized in that, The anti-detachment barrier includes a pin and a limiting strip; the pin is inserted into two through holes in sequence, one end of the pin forms an anti-detachment part, and the end of the pin away from the anti-detachment part has a limiting hole, and the limiting strip is inserted into the limiting hole.

5. The safety device for maintenance of the water transfer printing dryer according to claim 4, characterized in that, The limiting insert is a bent strip structure.

6. The safety device for maintenance of the water transfer printing dryer according to claim 4, characterized in that, The limiting insert is interference-fitted with the limiting hole.

7. The safety device for maintenance of the water transfer printing dryer according to claim 1, characterized in that, The support frame is a one-piece molded structure.

8. The safety device for maintenance of the water transfer printing dryer according to claim 1, characterized in that, The anti-detachment barrier is connected to the support frame by a chain.

9. A safety tool for the maintenance of a water transfer printing dryer, characterized in that, The device includes a lifting hydraulic cylinder and a safety device for maintenance of a water transfer printing dryer as described in any one of claims 1 to 8. The lifting hydraulic cylinder is rotatably mounted on the lower housing. The guide port is movably sleeved on the piston rod of the lifting hydraulic cylinder. One end of the support sleeve abuts against the connecting seat at the end of the piston rod. The connecting seat is rotatably connected to the upper housing.

10. The safety tool for overhauling a water transfer printing dryer according to claim 9, characterized in that, The lifting hydraulic cylinder is hinged to the lower housing, and the connecting seat is hinged to the upper housing.

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