Textile detection device

Abstract

The utility model provides a textile detection device which comprises a workbench, a displacement driving assembly, a placement plate, a pressing plate, a friction assembly and a material wetting assembly. The placing plate is arranged on the workbench and connected with a rotating lead screw in a displacement driving assembly arranged on the workbench through a mounting base, when placed cloth is located on the placing base, the cloth is limited through a pressing plate, and then a supporting rod component in the material wetting assembly drives a supporting plate to rotate to the position above an opening formed in the pressing plate; the periphery of the rolling brush part wetted through the liquid dropping part is attached to the end face of the textile fabric, so that the textile fabric is wetted, then wiping head parts in the two friction assemblies abut against the two sets of textile fabric correspondingly, and the placed fabric is driven to move under the cooperation of a rotating lead screw; therefore, dry friction and wet friction can be detected at the same time, and the problem that an existing detection device is single in detection and cannot detect at the same time is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a textile detection device. BACKGROUND

[0002] The textile detection device is a series of equipment for evaluating the quality of textiles, which can detect various properties of textiles, and color fastness detection is an important link in textile detection, which is used to evaluate the ability of color stability of textiles under certain conditions. However, the existing detection device is a single work station, and when dry friction and wet friction tests are needed, the operator needs to process and set the sample twice, which increases the complexity of operation and the risk of operation error, thereby reducing the work efficiency of detection. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the above-mentioned problem and provides a textile detection device.

[0004] The technical scheme of the present application is implemented as follows:

[0005] The present application provides a textile detection device, which comprises a workbench, a displacement driving assembly, a placing plate, a pressing plate, a friction assembly and a material wetting assembly. The workbench has a receiving groove, and the displacement driving assembly is arranged in the receiving groove. The displacement driving assembly comprises a rotating lead screw and a driver. The rotating lead screw is arranged in the receiving groove and connected with the driver.

[0006] The placing plate has a mounting seat at the bottom and is mounted on the rotating lead screw. Two groups of material placing seats are arranged on the placing plate in an interval. The pressing plate has an opening. When the pressing plate is mounted on the material placing seat, the opening forms a friction area on the material placing seat.

[0007] The friction assembly comprises a placing seat, a bracket component and a wiping head component. The placing seat has a sliding groove, and the bracket component is movably arranged on the sliding groove. The wiping head component is mounted on the bracket component and located above the material placing seat.

[0008] The material wetting assembly is arranged on the workbench. The material wetting assembly comprises a supporting rod component, a supporting plate, a liquid dropping component and a rolling brush. The supporting rod component is located on one side of the placing plate and connected with the supporting plate. The liquid dropping component is arranged on the supporting plate. The other side of the supporting plate is provided with two groups of partition plates arranged in an interval. A supporting rod is arranged between the two groups of partition plates. The rolling brush is sleeved on the supporting rod. The liquid outlet end of the liquid dropping component passes through the supporting plate and is located above the rolling brush.

[0009] In an embodiment, the supporting rod component comprises a fixed rod and a movable rod. The fixed rod is arranged on the workbench. The fixed rod has a cavity. Part of the movable rod is sleeved in the cavity. The supporting plate is connected with the movable rod. The movement of the movable rod in the cavity makes the supporting plate close to or away from the fixed rod.

[0010] And the movable rod can rotate along the circumferential direction of the cavity, so as to make the support plate rotate synchronously.

[0011] In an embodiment, the support component comprises a bearing seat, a movable seat and a bearing support, the bearing seat is provided with a sliding groove, the movable seat is movably arranged on the sliding groove, the movable seat is provided with a shaft, and the bearing support is sleeved on the shaft, so that the bearing support can rotate along the shaft.

[0012] When the movable seat moves relatively in the sliding groove, the position of the bearing support changes synchronously.

[0013] The bearing support is provided with a clamping plate, and the wiping head component is arranged on the clamping plate.

[0014] In an embodiment, the wiping head component comprises a driving motor and a friction head, the driving motor is arranged on the clamping plate, and the output end of the driving motor is provided with a shaft coupling and connected with the friction head.

[0015] Through the cooperation of the driving motor, the friction head can rotate along the circumference.

[0016] In an embodiment, the two sides of the pressing plate are provided with limiting components, the limiting components comprise a screw rod and a clamping plate, one end of the screw rod extends into the interior of the pressing plate and is connected with the clamping plate.

[0017] Through the rotation of the screw rod, the clamping plate moves relatively.

[0018] In an embodiment, one end of the pressing plate is provided with a recess and a rotating roller component, the rotating roller component comprises a roller and a rotating shaft, the rotating shaft is rotatably arranged in the recess, one end of the rotating shaft extends to the outside of the pressing plate and is installed with a hand wheel.

[0019] The roller is sleeved on the rotating shaft.

[0020] In an embodiment, the material placing seat is provided with an air cavity, the material placing seat is provided with overflow holes in communication with the air cavity, and the overflow holes are evenly distributed on the material placing seat.

[0021] The bottom of the material placing seat is provided with an air inlet in communication with the air cavity, and the air inlet is connected with an external air pump.

[0022] In an embodiment, the two sides of the workbench are provided with symmetrically distributed guide components, the guide components comprise support bearing seats and guide rods, the support bearing seats are provided with two groups of spacers, and the guide rods are installed on the two groups of support bearing seats.

[0023] The bottom of the placing plate is provided with protrusions and is sleeved on the guide rods.

[0024] The advantages or beneficial effects of the above technical solutions at least include:

[0025] The textile detection device of the application divides the textile fabric to be detected into two parts and places them on two sets of material holders respectively and limits them with pressing plates, so that only part of the textile fabric is exposed from the opening. The material moistening assembly on the side of the workbench cooperates with the supporting rod part to make the supporting plate drive the roller brush part to be located above the opening, and by extruding the droplet part, the liquid moistens the roller brush part. Then the roller brush part is in contact with one set of textile fabric, so that one set of textile fabric is dry, and the other set is dry. Then the rubbing head parts in the two sets of rubbing assemblies are located above the opening and in contact with the textile fabric. The displacement driving assembly cooperates to make the placing plate drive the material holder to move back and forth. In the moving process, the textile fabric is in contact with the rubbing head part, so as to realize dry rubbing and wet rubbing detection of color fastness, and solve the problem that the existing detection device cannot detect the two states of the sample at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings illustrate exemplary embodiments of the present application and together with the general description of the application given above and the detailed description of the embodiments below, serve to explain the principles of the present application. These drawings are included herewith and constitute a part of this specification.

[0027] Figure 1 A structural schematic view of one perspective of the textile detection device of the embodiment of the application is shown;

[0028] Figure 2 A structural schematic view of another perspective of the textile detection device of the embodiment of the application is shown;

[0029] Figure 3 A structural schematic view of a partial section of the textile detection device of the embodiment of the application is shown;

[0030] Figure 4 A partial structural schematic view of the textile detection device of the embodiment of the application is shown;

[0031] Figure 5 A structural schematic view of the rubbing assembly of the embodiment of the application is shown;

[0032] Figure 6 A structural schematic view of the pressing plate of the embodiment of the application is shown;

[0033] Figure 7 A schematic view of the material moistening assembly of the embodiment of the application is shown;

[0034] Reference signs: 1, workbench; 11, accommodating groove;

[0035] 2, displacement driving assembly; 21, rotating screw; 22, driver;

[0036] 3, placing plate; 31, mounting seat; 32, material placing seat; 321, overflow hole; 322, gas inlet; 33, protruding part;

[0037] 4, pressing plate; 41, opening; 42, limiting part; 421, screw part; 422, clamping plate; 43, rotating roller part; 431, roller; 432, rotating shaft;

[0038] 5, friction assembly; 51, placing seat; 511, sliding groove; 512, mounting hole; 52, support part; 521, bearing seat; 5211, through hole; 522, movable seat; 5221, shaft; 523, bearing support; 5231, clamping plate; 53, rubbing head part; 531, driving motor; 532, rubbing head;

[0039] 6, material wetting assembly; 61, supporting rod part; 611, fixed rod; 612, movable rod; 62, supporting plate; 621, partition plate; 622, supporting rod; 63, liquid dropping part; 64, rolling brush part;

[0040] 7, guiding part; 71, supporting bearing seat; 72, guiding rod. DETAILED DESCRIPTION

[0041] Embodiments of the present application will be described in more detail with reference to the drawings. While several embodiments of the application are shown in the drawings, it is understood that the application can be embodied in various forms and should not be construed as limited to the embodiments set forth in the description. Rather, these embodiments are provided as a full and enabling disclosure of the application, and to fully convey its scope to those skilled in the art. It is understood that the drawings and detailed description thereto are not intended to limit the scope of the present application.

[0042] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0043] It should be understood that the term "comprising" and its variants used herein are open-ended, i.e., "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions of other terms will be given in the following description. It should be noted that the "first", "second", etc. concepts mentioned in the present application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0044] It should be noted that the modification of "one", "a number of" mentioned in the present application is illustrative but not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0045] The names of the messages or information exchanged between the plurality of devices in the embodiments of the present application are only for illustrative purposes, and are not used to limit the scope of the messages or information.

[0046] Referring to Figures 1-7 A textile detection device, comprising a workbench 1, a displacement driving assembly 2, a placement plate 3, a pressing plate 4, a friction assembly 5 and a material wetting assembly 6, the workbench 1 is provided with a containing groove 11, the displacement driving assembly 2 is arranged in the containing groove 11, the displacement driving assembly 2 comprises a rotating lead screw 21 and a driver 22, the rotating lead screw 21 is rotationally arranged in the containing groove 11 and connected with the driver 22, the driver 22 is a servo driving motor in the prior art, the driver 22 provides power for the rotation of the rotating lead screw 21, the friction assembly 5 is used for detecting the rubbing fastness of the textile fabric, and the material wetting assembly 6 is used for wetting the textile fabric during the detection and detecting the wet rubbing of the textile fabric under the cooperation of the friction assembly 5;

[0047] The placement plate 3 is provided with a mounting seat 31 at the bottom and is mounted on the rotating lead screw 21, when the rotating lead screw 21 rotates, the placement plate 3 moves along the rotating direction of the rotating lead screw 21 through the cooperation of the mounting seat 31, the placement plate 3 is provided with two groups of spaced placement seats 32, the placement seats 32 are used for placing the textile fabric to be detected, the pressing plate 4 is provided with an opening 41, when the pressing plate 4 is installed on the placement seat 32, the opening 41 forms a rubbing area on the placement seat 32, and the friction assembly 5 rubs the textile fabric in the opening 41 for detection;

[0048] The friction assembly 5 comprises a placement seat 51, a bracket component 52 and a wiping head component 53, the placement seat 51 is provided with a sliding groove 511, the bracket component 52 is movably arranged on the sliding groove 511, and the wiping head component 53 is mounted on the bracket component 52 and located above the placement seat 32;

[0049] The material wetting assembly 6 is arranged on the workbench 1, and the material wetting assembly 6 comprises a supporting rod component 61, a supporting plate 62, a dripping component 63 and a rolling brush component 64. The supporting rod component 61 is arranged on one side of the placing plate 3 and connected with the supporting plate 62. The dripping component 63 is arranged on the supporting plate 62, and the dripping component 63 is made of silica gel material. When the dripping component 63 is pressed, liquid in the dripping component 63 can be squeezed out from a liquid outlet end. The other side of the supporting plate 62 is provided with a plurality of spaced-apart partition plates 621, and a supporting rod 622 is arranged between the two partition plates 621. The rolling brush component 64 is sleeved on the supporting rod 622, and the outer periphery of the rolling brush component 64 is made of cotton. The liquid outlet end of the dripping component 63 passes through the supporting plate 62 and is located above the rolling brush component 64.

[0050] Based on the above structure, the textile fabric to be detected is cut into two parts and placed on the two groups of material placing seats 32 respectively, and the textile fabric is covered by the pressing plate 4, so that the textile fabric is located between the pressing plate 4 and the material placing seat 32. Since the material wetting assembly 6 is located on one side of the workbench 1, the supporting plate 62 is located on one of the material placing seats 32 by adjusting the supporting rod component 61, and the outer periphery of the rolling brush component 64 is attached to the end surface of the textile fabric. By pressing the dripping component 63, liquid is attached to the rolling brush component 64, so that the rolling brush component 64 is in a wet state. The placing plate 3 is driven to move by the displacement driving assembly 2, so that the textile fabric is in full contact with the rolling brush component 64 during reciprocating movement, thereby completing the wetting operation of one of the textile fabrics. Then, the rubbing head component 53 of the rubbing assembly 5 is located above the opening 41 and abuts against the textile fabric of the opening 41, and the placing plate 3 drives the placed material to move repeatedly under the cooperation of the displacement driving assembly 2, thereby realizing two detection modes of dry rubbing and wet rubbing of the textile fabric on one device, and solving the problem of low detection efficiency caused by twice different processing and setting of the sample in the traditional mode.

[0051] In one embodiment, referring to Figure 1 , Figure 2 and Figure 7The support rod component 61 comprises a fixed rod 611 and a movable rod 612, the overall length of the support rod component 61 is composed of the fixed rod 611 and the part of the movable rod 612 outside the fixed rod 611, the fixed rod 611 is arranged on the workbench 1, the fixed rod 611 is provided with a cavity, and the part of the movable rod 612 is sleeved in the cavity; the support plate 62 is connected with the movable rod 612, the support plate 62 is moved close to or away from the fixed rod 611 through the movement of the movable rod 612 in the cavity, and the movable rod 612 can rotate along the circumferential direction of the cavity, so that the support plate 62 rotates synchronously. Since the support plate 62 is arranged on the movable rod 612, when the movable rod 612 moves relatively in the cavity, the support plate 62 drives the dripping component 63 and the rolling brush component 64 to change the position, and can rotate circumferentially under the cooperation of the movable rod 612, so as to adjust the height and angle according to the actual situation, and avoid blocking other components.

[0052] In one embodiment, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , the support component 52 comprises a bearing seat 521, a movable seat 522 and a bearing support 523, the bearing seat 521 is provided with a sliding groove 511, the movable seat 522 is movably arranged on the sliding groove 511, the movable seat 522 is provided with a shaft 5221, and the bearing support 523 is sleeved on both sides of the shaft 5221, so that the bearing support 523 can rotate circumferentially along the shaft 5221. When the movable seat 522 moves relatively in the sliding groove 511, the position of the bearing support 523 changes synchronously. The overall height of the bearing support 523 is formed by the bearing seat 521 and the part of the movable seat 522 outside the bearing seat 521, so that the height of the bearing support 523 can be adjusted according to the actual use through the cooperation of the bearing seat 521 and the movable seat 522, avoiding the limitation of the bearing support 523 on other components during use, and improving the use flexibility of the friction assembly 5.

[0053] The bearing support 523 is provided with a clamping plate 5231, and the wiping head component 53 is arranged on the clamping plate 5231. When the height position of the bearing support 523 changes, the height of the wiping head component 53 also changes synchronously.

[0054] In one embodiment, referring to Figure 1 、 Figure 3 and Figure 5The rubbing head component 53 comprises a driving motor 531 and a rubbing head 532. The driving motor 531 is arranged on the clamping plate 5231. An output end of the driving motor 531 is provided with a shaft coupling and is connected with the rubbing head 532. The rubbing head 532 is made of rubber. The rubbing head 532 can rotate in a circle through cooperation of the driving motor 531. The driving motor 531 is a servo driving motor in the prior art. The driving motor 531 provides power for rotation of the rubbing head 532, so that rotation friction of the textile fabric is realized, and the detection mode of the textile fabric is increased.

[0055] In one embodiment, referring to Figure 1 and Figure 6 The two sides of the pressing plate 4 are provided with limiting components 42. The limiting components 42 comprise screw rods 421 and clamping plates 422. One end of the screw rod 421 extends to the inside of the pressing plate 4 and is connected with the clamping plate 422. The clamping plate 422 moves relatively through rotation of the screw rod 421. When the textile fabric is located between the pressing plate 4 and the material placing seat 32, the clamping plate 422 can be close to the textile fabric and clamp the textile fabric through rotation of the screw rod 421, so that the textile fabric is prevented from shaking during detection.

[0056] One end of the pressing plate 4 is provided with a recess and a rotating roller component 43. The rotating roller component 43 comprises a roller 431 and a rotating shaft 432. The rotating shaft 432 is rotatably arranged in the recess. One end of the rotating shaft 432 extends to the outside of the pressing plate 4 and is provided with a hand wheel. The roller 431 is sleeved on the rotating shaft 432. When the textile fabric is placed on the material placing seat 32 and is covered by the pressing plate 4, the rotating roller component 43 is located at one end of the textile fabric, and the outer periphery of the roller 431 is in contact with the end surface of the textile fabric. Therefore, when the other end of the textile fabric is limited, the roller 431 can be driven to rotate through rotation of the rotating shaft 432, so that the textile fabric is stretched by the roller 431, and the textile fabric is in a taut state, so that wrinkles of the textile fabric during detection are avoided.

[0057] In one embodiment, referring to Figures 1-4The material placing seat 32 has an air cavity, the material placing seat 32 is provided with overflow holes 321 which are communicated with the air cavity, the overflow holes 321 are provided with a plurality of overflow holes which are uniformly distributed on the material placing seat 32, the bottom of the material placing seat 32 is provided with an air inlet interface 322 which is communicated with the air cavity, the air inlet interface 322 is connected with an external air pump, the material placing seat 32 is used for placing the textile fabric which needs to be detected, when the textile fabric is located on the material placing seat 32, the overflow holes 321 are covered by the textile fabric, because the air inlet interface 322 at the bottom of the material placing seat 32 is connected with the external air pump, when the air pump generates suction, the textile fabric can be sucked by the overflow holes 321, so that the textile fabric can be firmly attached to the material placing seat 32, when the rubbing head component 53 of the rubbing assembly 5 rubs the textile fabric, the textile fabric is prevented from being wrinkled.

[0058] In one embodiment, referring to Figures 1-3 , the workbench 1 is provided with symmetrically distributed guide components 7, the guide components 7 include support bearing seats 71 and guide rods 72, the support bearing seats 71 are provided with two groups of support bearing seats which are spaced apart, the guide rods 72 are installed on the two groups of support bearing seats 71;

[0059] The bottom of the placing plate 3 is provided with protrusions 33 which are sleeved on the guide rods 72, because the placing plate 3 is movably arranged on the rotating lead screw 21 of the displacement driving assembly 2, in order to further improve the stability of the movement of the placing plate 3, the protrusions 33 arranged on the bottom of the placing plate 3 are installed on the guide rods 72, so that when the placing plate 3 moves, the guide rods 72 can support and guide the placing plate 3, so that the placing plate 3 can move stably and avoid deviation during movement.

[0060] In one embodiment, referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 , the placing seat 51 is provided with mounting holes 512 which extend into the sliding groove 511, the mounting holes 512 are provided with a plurality of mounting holes which are spaced apart along the length direction of the placing plate 3, the bearing seat 521 is provided with through holes 5211 which have the same hole diameter as the mounting holes 512, when the through holes 5211 and the mounting holes 512 are aligned, the pins pass through the mounting holes 512 and the through holes 5211, because the placing seat 51 is movably arranged in the sliding groove 511, in order to avoid the placing seat 51 deviates in the sliding groove 511 due to shaking of the rubbing assembly 5 during rubbing operation, the mounting holes 512 are arranged at specified positions, the pins can connect the mounting holes 512 and the through holes 5211, so that the pins can limit the placing seat 51, thereby avoiding deviation of the placing seat 51 which causes errors in detection results.

[0061] In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0062] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the application, and are not intended to limit the scope of the application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the application.

Claims

1. A textile inspection device, characterized by: The utility model provides a material friction and wetting device, including workbench, displacement drive assembly, placement plate, pressing plate, friction assembly and material wetting assembly, the workbench has accommodating groove on, displacement drive assembly sets up in accommodating groove, displacement drive assembly includes rotating screw rod and driver, rotating screw rod rotates sets up in accommodating groove and is connected with driver, The bottom of the placement plate has a mounting seat and is mounted on the rotating screw rod. Two groups of material placement seats are arranged on the placement plate. The pressing plate has an opening. When the pressing plate is mounted on the material placement seat, the opening forms a friction area on the material placement seat. The friction assembly includes a placement seat, a bracket component, and a wiping head component. The placement seat has a sliding groove. The bracket component is movably arranged on the sliding groove. The wiping head component is mounted on the bracket component and located above the material placement seat. The material wetting assembly is arranged on the workbench. The material wetting assembly includes a support rod component, a support plate, a liquid drop component, and a rolling brush. The support rod component is located on one side of the placement plate and connected with the support plate. The liquid drop component is arranged on the support plate. The other side of the support plate is provided with spaced-apart partition plates. The two groups of partition plates are provided with a support rod therebetween. The rolling brush is sleeved on the support rod. The liquid outlet end of the liquid drop component is located above the rolling brush through the support plate.

2. The textile inspection apparatus of claim 1, wherein: The support rod component includes a fixed rod and a movable rod. The fixed rod is arranged on the workbench. The fixed rod has a cavity. The movable rod is partially sleeved in the cavity. The support plate is connected with the movable rod. The movement of the movable rod in the cavity makes the support plate close to or away from the fixed rod. The movable rod can rotate along the circumferential direction of the cavity, so that the support plate rotates synchronously.

3. The textile inspection apparatus of claim 1, wherein: The bracket component includes a bearing seat, a movable seat, and a bearing bracket. The bearing seat has a sliding groove. The movable seat is movably arranged on the sliding groove. The movable seat has a shaft. The bearing bracket is sleeved on the shaft, so that the bearing bracket can rotate along the shaft. When the movable seat moves relatively in the sliding groove, the position of the bearing bracket changes synchronously. The bearing bracket has a clamping plate. The wiping head component is arranged on the clamping plate.

4. The textile inspection apparatus of claim 3, wherein: The wiping head component includes a driving motor and a friction head. The driving motor is arranged on the clamping plate. The output end of the driving motor is provided with a shaft coupling and connected with the friction head. Through the cooperation of the driving motor, the friction head can rotate along the circumference.

5. The textile inspection apparatus of claim 1, wherein: The pressing plate is provided with a limiting component on both sides. The limiting component includes a screw and a clamping plate. One end of the screw extends to the inside of the pressing plate and is connected with the clamping plate. Through the rotation of the screw, the clamping plate moves relatively.

6. The textile inspection apparatus of claim 5, wherein: One end of the pressing plate has a groove and is provided with a rotating roller component. The rotating roller component includes a roller and a rotating shaft. The rotating shaft is rotatably arranged in the groove. One end of the rotating shaft extends to the outside of the pressing plate and is provided with a hand wheel. The roller is sleeved on the rotating shaft.

7. The textile inspection apparatus of claim 1, wherein: The material placing seat has an air cavity, and an overflow hole communicating with the air cavity is arranged on the material placing seat, and the overflow hole is arranged with a plurality of overflow holes which are evenly distributed on the material placing seat; The bottom of the material placing seat is provided with an air inlet interface which communicates with the air cavity, and the air inlet interface is connected with an external air pump.

8. The textile inspection apparatus of claim 1, wherein: Both sides of the workbench are provided with symmetrically distributed guide components, the guide components include support bearing seats and guide rods, the support bearing seats are arranged with two groups which are spaced apart, and the guide rods are installed on the two groups of support bearing seats. The bottom of the placing plate is provided with protruding portions on both sides, and the placing plate is sleeved on the guide rods.

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