Positioning indicating device and rubber ferrule mounting equipment

Abstract

The utility model provides a positioning indicating device and rubber ferrule mounting equipment, and belongs to the technical field of automobile accessory machining. The positioning indicating device is used for being matched with a rubber ferrule installation device for use, the rubber ferrule installation device is used for installing an elastic rubber ferrule on a washing pipe and is provided with a plurality of round-rod-shaped opening rod parts, all the opening rod parts extend in the horizontal direction and are parallel to one another, and the opening rod parts are used for opening an installation opening of the rubber ferrule. The positioning indicating device comprises a mounting guide rail, a positioning device and a positioning device, the mounting guide rail is arranged in the horizontal direction and is parallel to the opening rod part; the indicating stop block is detachably arranged on the mounting guide rail and located on one side of the rubber ferrule mounting device, and the indicating stop block is used for blocking the head end of the washing pipe in the process that the washing pipe is arranged on the mounting opening of the rubber ferrule in a penetrating mode through the rubber ferrule mounting device, so that the mounting position of the rubber ferrule on the washing pipe is indicated.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a positioning indicating device and rubber ring installation equipment. Background Art

[0002] like Figure 11 As shown, a washing pipe 1 for use in an automobile (only a portion of the washing pipe 1 is shown in the figure) requires pre-processing before installation in the vehicle. Specifically, a flexible rubber ferrule 2 is installed at a predetermined position on the washing pipe 1, with the rubber ferrule 2 at a predetermined distance from the pipe opening 3 (i.e., the head end) of the washing pipe 1. The rubber ferrule 2 has two through-holes 4 for mounting on the washing pipe 1. The diameter of the mounting holes 4 in the free state is smaller than the outer diameter of the washing pipe 1.

[0003] During installation, the pipe mouth 3 of the washing pipe 1 needs to be passed through a mounting hole 4 of the rubber ring 2 and out. However, since the rubber ring 2 is elastic and easily deformed, and the aperture of the mounting hole 4 in the free state is smaller than the outer diameter of the washing pipe 1, the mounting hole 4 must be expanded before the washing pipe 1 can be passed through the mounting hole 4. The processing is very difficult, and there is a lack of specialized processing equipment on the market.

[0004] Furthermore, currently, installing the rubber ferrule 2 at the desired position on the washing pipe 1 is primarily a rough installation method performed by experienced personnel based on their experience, resulting in poor product consistency. To improve product consistency, some manufacturers use a ruler to measure the distance between the rubber ferrule 2 and the nozzle 3 of the washing pipe 1 while adjusting the position of the rubber ferrule 2 on the washing pipe 1. However, this method is extremely inefficient and cannot be used in production.

[0005] To this end, it is urgent to develop a rubber ring installation device that can install an elastic rubber ring at a predetermined position on the washing pipe, and it is also urgent to provide an indicating device for the rubber ring installation device to indicate and locate the installation position of the rubber ring on the washing pipe. Utility Model Content

[0006] The utility model is designed to solve the above-mentioned problem of how to indicate and locate the installation position of a rubber ferrule on a washing pipe, and aims to provide a positioning indicating device and a rubber ferrule installation device.

[0007] The utility model provides a positioning indicating device for use in conjunction with a rubber ring installation device, the rubber ring installation device is used to install an elastic rubber ring on a washing pipe and has a plurality of round rod-shaped expanding rod portions, all of which extend in a horizontal direction and are parallel to each other, the expanding rod portions are used to expand the installation opening of the rubber ring so as to allow the washing pipe to pass through, and the positioning indicating device is used to indicate the installation position of the rubber ring on the washing pipe, and has the following characteristics: a mounting guide rail, which is arranged in a horizontal direction and is parallel to the expanding rod portions; an indicating block, which is detachably arranged on the mounting guide rail and is located on one side of the rubber ring installation device, wherein the indicating block is used to block the head end of the washing pipe during the process of passing the washing pipe through the installation opening of the rubber ring through the rubber ring installation device, thereby indicating the installation position of the rubber ring on the washing pipe.

[0008] The positioning indicating device provided by the present invention may also have the following feature: wherein the mounting guide rail is in the shape of a rectangular parallelepiped strip.

[0009] The positioning indicating device provided by the present invention may also have the following features: wherein, the indicating block has: a connecting part, which is sleeved on the mounting rail and detachably connected to the mounting rail by bolts; and an indicating part, which is arranged on the connecting part and is used to block the head end of the washing pipe, thereby indicating the installation position of the rubber ring on the washing pipe.

[0010] The positioning indicating device provided by the present invention may also have the following features: threaded holes are respectively provided on both sides of the connecting portion, and bolts are passed through the threaded holes and tightened on the mounting rails.

[0011] The positioning indicating device provided by the present invention may also have the following features: wherein, the rubber ring mounting device also has a connecting rod portion connected one by one to the spreading rod portion, the connecting rod portion and its corresponding spreading rod portion are L-shaped, all the connecting rod portions are located on the same vertical plane, and the side of the indicating portion close to the rubber ring mounting device serves as a blocking indicating surface, which is parallel to the vertical plane where the connecting rod portion is located, and is arranged opposite to all the spreading rod portions.

[0012] The positioning indication device provided by the present invention may also have the following features: wherein, the expansion rod portion has an expansion position and a closing position, and when the expansion rod portion is in its respective closing position, it is aligned with the central position of the blocking indication surface, the top of the blocking indication surface is higher than the expansion rod portion that is at the highest point in the expansion position, and the bottom of the blocking indication surface is lower than the expansion rod portion that is at the lowest point in the expansion position, and the width of the blocking indication surface is greater than the interval between the expansion rod portions on both sides in the expansion position.

[0013] The positioning indicating device provided by the present invention may also have the following feature: the indicating portion is in the shape of a rectangular parallelepiped.

[0014] The utility model also provides a rubber ring installation device, which is characterized by comprising: a rubber ring installation device for installing the rubber ring on the washing pipe; and a positioning indicating device for indicating the installation position of the rubber ring on the washing pipe, wherein the positioning indicating device is the above-mentioned positioning indicating device.

[0015] Functions and effects of utility models

[0016] According to a positioning indicating device and rubber ring installation equipment involved in the utility model, because the positioning indicating device includes a mounting rail and an indicating block, the mounting rail is arranged in the horizontal direction and is parallel to the support rod, and the indicating block is arranged on the mounting rail and is located on one side of the rubber ring installation device, so the indicating block can block the head end (tube mouth) of the washing pipe during the process of passing the washing pipe through the mounting port of the rubber ring through the rubber ring installation device, thereby indicating the installation position of the rubber ring on the washing pipe, ensuring that the rubber ring is finally installed at the predetermined position of the washing pipe.

[0017] Furthermore, because the indicator block is detachably arranged on the mounting rail, the setting position of the indicator block on the mounting rail can be adjusted as needed, thereby changing the distance between the support rod and the indicator block, and further changing the installation position of the rubber ring on the washing pipe to meet different processing requirements. For example, some require the rubber ring to be installed 12 cm away from the pipe mouth of the washing pipe, while others require the rubber ring to be installed 13 cm away from the pipe mouth of the washing pipe, and so on. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the rubber ring installation device in the embodiment of the present utility model;

[0019] Figure 2 is a side view of a rubber ferrule installation device in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the rubber ring installation device in the embodiment of the utility model Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the rubber ring installation device in the embodiment of the utility model Figure 2 ;

[0022] Figure 5 1 is a schematic diagram of the rubber ring installation device in an embodiment of the present invention when its expansion member is in a closed position;

[0023] Figure 6 1 is a schematic diagram of the rubber ring installation device in an embodiment of the present invention when its expansion member is in the expansion position;

[0024] Figure 7 This is a schematic diagram of a rubber ring placed on the rubber ring mounting device in an embodiment of the present invention;

[0025] Figure 8 It is a structural diagram of the rubber ring installation device and the positioning indication device in the embodiment of the utility model;

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the positioning indicator device in the embodiment of the utility model;

[0027] Figure 10 It is a structural schematic diagram of the indicating block in the embodiment of the utility model;

[0028] Figure 11 It is a schematic diagram of an elastic rubber ring installed on a washing pipe in the prior art. DETAILED DESCRIPTION

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments and accompanying drawings specifically illustrate the positioning indicator device and rubber ring installation device of the present invention.

[0031] Example

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the rubber ring installation device in the embodiment of the present utility model; Figure 2 It is a side view of the rubber ring installation device in an embodiment of the present utility model.

[0033] like Figure 1-Figure 2As shown, this embodiment provides a rubber ring installation device 100 for installing an elastic rubber ring 2 at a predetermined position of a washing pipe 1. The rubber ring installation device 100 includes a mounting platform (not shown), a rubber ring installation device 20, and a positioning indicator device 30.

[0034] The mounting platform is a flat plate for placement on a workbench or table. A rubber ring mounting device 20 is provided on the mounting platform for mounting the rubber ring 2 on the washing pipe 1. A positioning indicator 30 is provided on the mounting platform for indicating the installation position of the rubber ring 2 on the washing pipe 1.

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure of the rubber ring installation device in the embodiment of the utility model Figure 1 ; Figure 4 This is a schematic diagram of the three-dimensional structure of the rubber ring installation device in the embodiment of the utility model Figure 2 .

[0036] like Figure 1-Figure 4 As shown, the rubber ferrule mounting device 20 is used to mount the rubber ferrule 2 on the washing pipe 1 and is disposed on a mounting platform. The rubber ferrule mounting device 20 includes a support mechanism 21 and at least three expansion mechanisms. In this embodiment, three expansion mechanisms are provided, designated as a first expansion mechanism 22, a second expansion mechanism 23, and a third expansion mechanism 24. The first expansion mechanism 22, the second expansion mechanism 23, and the third expansion mechanism 24 have identical structures, differing only in their placement.

[0037] like Figure 3 and Figure 4 As shown, the support mechanism 21 includes a horizontal mounting plate 211, a first bracket 212, and a second bracket 213. The horizontal mounting plate 211 is fixedly disposed on the mounting platform.

[0038] The first bracket 212 is fixedly mounted on the horizontal mounting plate 211 and is in an inverted T-shaped structure. The first expansion mechanism 22 is mounted on the first bracket 212 .

[0039] The second bracket 213 is fixedly mounted on the horizontal mounting plate 211 and spaced apart from the first bracket 212. The second bracket 213 includes a vertical plate 2131, a reinforcing rib 2132, and a horizontal plate 2133. The bottom of the vertical plate 2131 is fixed to the horizontal mounting plate 211, and the third support mechanism 24 is disposed below the vertical plate 2131. The reinforcing rib 2132 is vertically mounted on the horizontal mounting plate 211 and connected to the vertical plate 2131 to improve the stability of the vertical plate 2131. The vertical plate 2131 and the third support mechanism 24 are respectively disposed on either side of the second bracket 213.

[0040] The horizontal plate 2133 is disposed on an upper portion of the vertical plate 2131 and is perpendicular to the vertical plate 2131 . The second spreading mechanism 23 is disposed on the horizontal plate 2133 .

[0041] The structure of the spreading mechanism will be described in detail by taking the first spreading mechanism 22 as an example.

[0042] like Figure 3 and Figure 4 As shown, the first opening mechanism 22 is provided on the first bracket 212 and is used to open the mounting opening 4 of the rubber ring 2 so as to allow the washing pipe 1 to pass through. The first opening mechanism 22 includes an opening member 221 and a driving unit 222 .

[0043] The driving unit 222 includes an expansion driving cylinder 2221 and a moving member 2222. The output shaft of the expansion driving cylinder 2221 is connected to the moving member 2222, and the expansion member 221 is disposed on the moving member 2222. The expansion driving cylinder 2221 is a double-axis cylinder.

[0044] The expansion member 221 is a smooth L-shaped round rod having a connecting rod portion 2211 connected to the moving member 2222 and an expansion rod portion 2212 perpendicularly connected to the connecting rod portion 2211. The connecting rod portion 2211 and the expansion rod portion 2212 are perpendicular to each other, and the expansion member 221 is integrally formed.

[0045] The connecting rods 2211 of the first, second, and third expansion mechanisms 22, 23, and 24 are located in the same vertical plane and are evenly distributed around an axis perpendicular to the vertical plane. The expansion rods 2212 of the three expansion mechanisms are all parallel to the axis. The expansion rods 2212 of the three expansion mechanisms have the same dimensions, as do the connecting rods 2211 of the three expansion mechanisms.

[0046] The connecting rod portion 2211 of each spreading mechanism forms a 120° angle with the adjacent connecting rod portion 2211 in the vertical plane. In this embodiment, the connecting rod portion 2211 of the first spreading mechanism 22 forms a 60° angle with the horizontal mounting plate 211, the connecting rod portion 2211 of the second spreading mechanism 23 is perpendicular to the horizontal mounting plate 211, and the connecting rod portion 2211 of the third spreading mechanism 24 forms a 120° angle with the horizontal mounting plate 211.

[0047] Figure 5 1 is a schematic diagram of the rubber ring installation device in an embodiment of the present invention when its expansion member 221 is in a closed position; Figure 6 1 is a schematic diagram of the rubber ring installation device in an embodiment of the present invention when its expansion member 221 is in the expansion position.

[0048] like Figure 5-Figure 6As shown, the driving unit 222 can correspondingly drive the expansion member 221 to switch between its closed position and the expansion position. The connecting line between the expansion position and the closed position constitutes the moving trajectory of the expansion mechanism. The moving trajectories of the three expansion mechanisms coincide with the length direction of their respective connecting rod parts 2211.

[0049] Figure 7 This is a schematic diagram of a rubber ring placed on the rubber ring mounting device in an embodiment of the present invention.

[0050] like Figure 5-Figure 7 As shown, when the three expansion mechanisms are all in their respective closed positions, the expansion rods 2212 of the three expansion members 221 can be in contact with each other, or there can be a certain gap between them, as long as the outermost dimensions of the three expansion rods 2212 are smaller than the inner diameter of the mounting opening 4. At this time, the mounting opening 4 can be inserted into the three expansion members 221, specifically, into the expansion rods 2212 of the three expansion members 221.

[0051] Then, each driving unit 222 can drive the corresponding expansion member 221 to move from its closed position to the expansion position, thereby evenly expanding the installation opening 4, and then inserting the washing pipe 1 into the expanded installation opening 4.

[0052] Then, each driving unit 222 drives the corresponding opening member 221 to move from its opening position to the closing position, and the washing pipe 1 with the rubber ring 2 installed can be manually removed.

[0053] Figure 8 1 is a schematic structural diagram of the rubber ring installation device 20 and the positioning indicator device 30 in an embodiment of the present utility model; Figure 9 It is a schematic diagram of the three-dimensional structure of the positioning indicator device in the embodiment of the utility model.

[0054] like Figure 8-Figure 9 As shown, the positioning indicator 30 is used to indicate the installation position of the rubber ring 2 on the washing pipe 1. The positioning indicator 30 includes a mounting guide rail 31, an indicator block 32 and a mounting block 33.

[0055] like Figure 2 and Figure 8 As shown, the mounting block 33 is fixedly arranged on the mounting platform. The mounting rail 31 is fixed to the mounting block 33, and is arranged in the horizontal direction and is parallel to the support rod portion 2212. The mounting rail 31 is a rectangular parallelepiped strip.

[0056] Figure 10 It is a structural schematic diagram of the indicating block in the embodiment of the present utility model.

[0057] like Figure 9 and Figure 10As shown, an indicator block 32 is provided on the mounting rail 31 and is located on one side of the rubber ferrule mounting device 20. The indicator block 32 is used to block the head end of the washing pipe 1 during the process of inserting the washing pipe 1 into the mounting opening 4 of the rubber ferrule 2 through the rubber ferrule mounting device 20, thereby indicating the installation position of the rubber ferrule 2 on the washing pipe 1. The indicator block 32 includes a connecting portion 322 and an indicating portion 321.

[0058] The connecting portion 322 is sleeved on the mounting rail 31 and is detachably connected to the mounting rail 31 by bolts. Threaded holes are respectively provided on both sides of the connecting portion 322, and the bolts are tightened on the mounting rail 31 through the threaded holes.

[0059] like Figures 8-10 As shown, the indicator portion 321 is provided on the connecting portion 322 and is used to block the head end of the washing pipe 1, thereby indicating the installation position of the rubber ring 2 on the washing pipe 1. The indicator portion 321 is rectangular in shape, and its side close to the rubber ring installation device 20 serves as a blocking indicator surface 3211. The blocking indicator surface 3211 is parallel to the vertical plane on which the connecting rod portion 2211 is located and is arranged opposite all the expansion rod portions 2212. The top of the blocking indicator surface 3211 is higher than the expansion rod portion 2212 at the highest point in the expansion position, and the bottom of the blocking indicator surface 3211 is lower than the expansion rod portion 2212 at the lowest point in the expansion position. The width of the blocking indicator surface 3211 is greater than the distance between the expansion rod portions 2212 on both sides in the expansion position.

[0060] The process of using the rubber ring installation device 100 is as follows:

[0061] First, adjust the indicator block 32 to a suitable position according to the predetermined distance between the rubber ring 2 and the nozzle 3 (i.e., the head end) of the washing pipe 1. Specifically, the position of the indicator block 32 on the mounting rail 31 can be manually adjusted by unscrewing the bolts between the connecting portion 322 and the mounting rail 31, and then tightening the bolts to secure it.

[0062] Secondly, the driving units 222 of the three expansion structures of the rubber ring mounting device 20 drive their respective expansion parts 221 to move to their respective closed positions, and then the mounting port 4 of the rubber ring 2 is manually inserted into the three expansion parts 221, and then the driving units 222 of the three expansion structures drive the corresponding expansion parts 221 to move from their closed positions to the expansion positions, thereby evenly expanding the mounting port 4, and then manually inserting the washing pipe 1 into the expanded mounting port 4, so that the pipe mouth 3 of the washing pipe 1 rests on the blocking indication surface 3211 of the indicating block 32.

[0063] Then, each driving unit 222 drives the corresponding opening member 221 to move from its opening position to the closing position, and the washing pipe 1 with the rubber ring 2 installed can be manually removed.

[0064] In this way, the washing pipe 1 with the rubber ring 2 installed at the predetermined position is obtained.

[0065] Functions and Effects of the Embodiments

[0066] According to a positioning indicating device and rubber ring installation equipment involved in this embodiment, because the positioning indicating device includes a mounting rail and an indicating block, the mounting rail is arranged in the horizontal direction and is parallel to the support rod, and the indicating block is arranged on the mounting rail and is located on one side of the rubber ring installation device, so the indicating block can block the head end (tube mouth) of the washing pipe during the process of passing the washing pipe through the mounting port of the rubber ring through the rubber ring installation device, thereby indicating the installation position of the rubber ring on the washing pipe, ensuring that the rubber ring is finally installed at the predetermined position of the washing pipe.

[0067] Furthermore, because the indicator block is detachably arranged on the mounting rail, the setting position of the indicator block on the mounting rail can be adjusted as needed, thereby changing the distance between the support rod and the indicator block, and further changing the installation position of the rubber ring on the washing pipe to meet different processing requirements. For example, some require the rubber ring to be installed 12 cm away from the pipe mouth of the washing pipe, while others require the rubber ring to be installed 13 cm away from the pipe mouth of the washing pipe, and so on.

[0068] Furthermore, because the mounting guide rail is in the shape of a rectangular parallelepiped bar, it is convenient to install the indicating block and ensure the stability of the installation.

[0069] Furthermore, because the indicator block has a connecting portion and an indicating portion, the connecting portion is sleeved on the mounting rail and is detachably connected to the mounting rail by bolts, and the detachable connection between the indicator block and the mounting rail is facilitated by the connecting portion; the indicating portion is arranged on the connecting portion, and the head end of the washing pipe can be blocked by the indicating portion, thereby indicating the installation position of the rubber ring on the washing pipe.

[0070] Furthermore, because threaded holes are provided on both sides of the connecting portion, bolts are passed through the threaded holes and tightened on the mounting rails. This arrangement allows the connecting portion and the mounting rails to be tightened from both sides of the connecting portion, ensuring the stability of the installation of the indicator block.

[0071] Furthermore, because the side of the indicator portion close to the rubber ring installation device serves as a blocking indicator surface, the blocking indicator surface is parallel to the vertical plane where the connecting rod portion is located and is arranged opposite to all the expansion rod portions. When the expansion rod portions are in their respective closed positions, they are aligned with the center position of the blocking indicator surface. The top of the blocking indicator surface is higher than the expansion rod portion at the highest point in the expanded position, and the bottom of the blocking indicator surface is lower than the expansion rod portion at the lowest point in the expanded position. The width of the blocking indicator surface is greater than the interval between the expansion rod portions at both sides in the expanded position. This arrangement ensures that the blocking indicator surface can play a role in blocking the pipe mouth (head end) during the process of inserting the washing pipe into the rubber ring. Once the pipe mouth reaches this position, the action of inserting the washing pipe can be stopped. After all the expansion mechanisms return to their respective closed positions, the rubber ring and the washing pipe can be removed together to obtain a washing pipe with the rubber ring installed at the predetermined position.

[0072] Furthermore, because the indicating portion is in a rectangular parallelepiped shape, the structure is simple and easy to set up.

[0073] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning indicator device for use with a rubber ring installation device, wherein the rubber ring installation device is used to install an elastic rubber ring on a washing pipe and has a plurality of round rod-shaped expansion rods, all of which extend in a horizontal direction and are parallel to each other. The expansion rods are used to expand the installation opening of the rubber ring so that the washing pipe can pass through it. The positioning indicator device is used to indicate the installation position of the rubber ring on the washing pipe, and is characterized in that: include: The guide rail is installed in the horizontal direction and is parallel to the support rod; The indicating block is detachably arranged on the mounting rail and is located on one side of the rubber ring mounting device. Wherein, the indicating block is used to block the head end of the washing pipe during the process of passing the washing pipe through the installation port of the rubber ring through the rubber ring installation device, thereby indicating the installation position of the rubber ring on the washing pipe.

2. The positioning indicator device according to claim 1, characterized in that: in, The mounting guide rail is in the shape of a rectangular parallelepiped strip.

3. The positioning indicator device according to claim 1, characterized in that: in, The indicating block has: a connecting portion, which is sleeved on the mounting rail and detachably connected to the mounting rail via bolts; and The indicating portion is arranged on the connecting portion and is used to block the head end of the washing pipe, thereby indicating the installation position of the rubber ring on the washing pipe.

4. The positioning indicator device according to claim 3, characterized in that: in, There are threaded holes on both sides of the connecting part. The bolt passes through the threaded hole and is tightened on the mounting rail.

5. The positioning indicator device according to claim 3, characterized in that: in, The rubber ring mounting device further comprises a connecting rod portion connected one-to-one with the spreading rod portion, wherein the connecting rod portion and the corresponding spreading rod portion are L-shaped, and all the connecting rod portions are located on the same vertical plane. A side of the indicator portion close to the rubber ring installation device serves as a blocking indicator surface, which is parallel to the vertical plane where the connecting rod portion is located and is arranged opposite to all the spreading rod portions.

6. The positioning indicator device according to claim 5, characterized in that: in, The expansion rod has an expansion position and a closing position. When the spreading rods are in their respective closed positions, they are aligned with the center of the blocking indicator surface. The top of the blocking indication surface is higher than the expansion rod portion that is at the highest point when in the expanded position, the bottom of the blocking indication surface is lower than the expansion rod portion that is at the lowest point when in the expanded position, and the width of the blocking indication surface is greater than the interval between the expansion rod portions on both sides when in the expanded position.

7. The positioning indicator device according to claim 3, characterized in that: in, The indicating portion is in the shape of a cuboid.

8. A rubber ferrule installation device, characterized in that: include: A rubber ferrule mounting device, used for mounting the rubber ferrule on the washing pipe; as well as Positioning indicator device, used to indicate the installation position of the rubber ring on the washing pipe, Wherein, the positioning indication device is the positioning indication device described in any one of claims 1-7.

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