A transfer device for processing a lining cloth
Patent Information
- Application Number
- CN202522166149.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-10-14
AI Technical Summary
[0004]本实用新型的目的在于提供一种衬布加工用转运设备,通过设置调节部,解决了现有的衬布加工用转运设备在实际使用时,不便于调节导卫板间距,使得在转运多种规格的衬布卷材时,导卫板难以与衬布卷材相适配,卷材在转运过程中会发生偏移,最终对衬布的加工质量产生不利影响的问题
1、通过设置调节部,调节组件与动力组件配合,实现导向块间距的调节,其具体运行过程为:电机驱动转轴带动圆盘转动,圆盘上的弧形滑槽通过滑杆一推动矩形杆在直滑槽内滑动,使两个导向块相互靠近或远离,直至接触衬布卷材并将其居中,从而完成间距调节以适应不同规格卷材的转运需求,其意义在于能够根据实际生产中衬布卷材的规格变化灵活调整导向块位置,确保转运过程中的稳定性与适配性,提升设备对多样化转运需求的适应能力;
Smart Images

Figure CN224882893U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lining processing technology, and in particular relates to a transfer device for lining processing. Background Technology
[0002] With the booming development of the textile industry, lining, as an indispensable auxiliary material in garment making, is being used more and more widely, and the demand is constantly rising. In the lining processing process, transfer equipment plays a crucial role, which is directly related to the efficiency and quality of lining processing. Therefore, there is an urgent need for high-performance lining processing transfer equipment to achieve efficient transfer of lining between various processing stages.
[0003] However, in actual use, the existing conveying equipment for lining processing is not easy to adjust the spacing of the guide plates. This makes it difficult for the guide plates to match the lining rolls when conveying various specifications of lining rolls. The rolls will shift during the conveying process, which will ultimately have an adverse effect on the processing quality of the lining. Utility Model Content
[0004] The purpose of this utility model is to provide a transfer device for lining processing. By setting an adjustment part, it solves the problem that the existing transfer device for lining processing is not convenient to adjust the spacing of the guide plates in actual use. This makes it difficult for the guide plates to match the lining rolls when transferring lining rolls of various specifications. As a result, the rolls will deviate during the transfer process, which will ultimately have an adverse effect on the processing quality of the lining.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a transfer device for processing lining fabric, comprising two support legs and a support frame fixedly connected to the top of the two support legs, and further comprising: a conveying section disposed on the two support legs; an adjusting section mounted on the support frame; two quick-change sections, arranged mirror-imagely above the two support legs; the adjusting section includes an adjusting assembly disposed on the support frame; and a power assembly mounted on the support frame; the adjusting assembly includes a circular groove formed at the top of the support frame, the inner wall of which is rotatably connected to a disc, and the disc having two arc-shaped sliding grooves, each of which has a sliding rod on its inner wall. The wall contacts the outer wall of each of the two slide rods. The bottom inner wall of the circular groove has two straight slide grooves. The outer walls of the two slide rods are slidably connected to the inner walls of the two straight slide grooves. The bottoms of the two slide rods pass through the straight slide grooves and are fixedly connected to rectangular rods. Guide members are provided on the two rectangular rods. Two arc-shaped slide grooves are arranged in a circumferential array on the disc. The guide members include two T-shaped slide grooves respectively opened on the two rectangular rods. Several T-shaped sliders are fixedly connected to the top inner wall of the support frame. The inner walls of the several T-shaped slide grooves are slidably connected to the outer walls of the corresponding T-shaped sliders. The adjustment assembly, through the cooperation of the disc and arc-shaped slide grooves, etc., realizes the mechanical adjustment of the guide block spacing, providing a structural basis for the transfer of lining rolls of different specifications.
[0006] Furthermore, the power assembly includes a motor frame fixedly connected to the top of the support frame. The output shaft of the motor frame is fixedly connected to a rotating shaft via a coupling. The bottom of the rotating shaft rotatably passes through the motor frame. The rotating shaft passes through the disc and is fixedly connected to it. The power assembly drives the rotating shaft with the motor to rotate the disc, providing power output for adjusting the guide block spacing and ensuring the automation and accuracy of the adjustment process.
[0007] Furthermore, the conveying unit includes a conveying assembly disposed between two support legs, and two guide blocks are disposed above the conveying assembly; the two guide blocks are mirror images of each other and located within the support frame, and the outer sides of the two guide blocks are respectively fixedly connected to the two quick-change parts.
[0008] Further, the quick-change unit includes a snap-fit assembly disposed on a corresponding rectangular rod; and an unlocking assembly disposed above the conveying assembly. The snap-fit assembly includes two rectangular plates fixedly connected to the bottom of the rectangular rod. A bracket is fixedly connected to the side of the two rectangular plates near the circular groove. The bracket includes two parallel horizontal plates and a connecting plate fixedly connected between the two horizontal plates. The two rectangular plates are respectively fixedly connected to the horizontal plates, and a gap is left between the two rectangular plates and the sidewall of the connecting plate. Two support blocks are fixedly connected to the side of the connecting plate away from the circular groove. A second slide rod passes through each of the two support blocks, and the two slide rods are slidably connected to the two support blocks respectively. Two locking blocks are fixedly connected to the outer wall of the guide block. Locking blocks pass through the sides of the two slide rods that are away from each other. The outer wall of the guide block contacts the inner wall of the two locking blocks respectively. The sides of the two locking blocks that are far apart from each other contact the two rectangular plates respectively. The sides of the two locking blocks that are close to each other contact the bracket. The two sliding rods are provided with elastic elements. The outer wall of the corresponding guide block contacts the inner wall of the bracket. The elastic element includes a circular block that is fixedly connected to the two sliding rods that are close to each other. A fixing block is fixedly connected to the middle of the outer side of the connecting plate. Two spring telescopic rods are fixedly connected to the two side walls of the fixing block respectively. The sides of the two spring telescopic rods that are far away from the fixing block are fixedly connected to the circular blocks at the ends of the two sliding rods respectively. After the corresponding guide block is fixed, the two spring telescopic rods are in a stretched state. The buckle assembly realizes a stable connection between the guide block and the bracket through the cooperation of the rectangular plate, the sliding rods, and the locking blocks, providing structural support for the quick replacement of the guide block.
[0009] Furthermore, the unlocking component includes two support blocks 2 fixedly connected to the outside of the connecting plate. Each of the two support blocks 2 has a locking rod extending through it. The two locking rods are slidably connected to the two support blocks 2 respectively. The bottom of each of the two locking rods contacts the outer wall of each of the two slide rods 1 respectively. A lever is fixedly connected to the side of each of the two locking rods away from the connecting plate. A stop block is fixedly connected to the outer wall of each of the two slide rods 2. The sides of the two stop blocks that are close to each other abut against the two locking rods respectively. The unlocking component uses the locking action of the locking rods and the stop blocks to lock the position of the slide rods 2 to fix the guide block. The unlocking operation enables convenient disassembly of the guide block, improving equipment maintenance efficiency.
[0010] This utility model has the following beneficial effects: 1. By setting an adjustment section, the adjustment component works in conjunction with the power component to adjust the spacing of the guide blocks. The specific operation process is as follows: the motor drives the rotating shaft to rotate the disc. The arc-shaped groove on the disc pushes the rectangular rod to slide in the straight groove through the slide rod, so that the two guide blocks move closer or further apart until they contact the lining roll and center it, thereby completing the spacing adjustment to adapt to the transfer needs of rolls of different specifications. Its significance is that it can flexibly adjust the position of the guide blocks according to the changes in the specifications of the lining roll in actual production, ensuring the stability and adaptability during the transfer process, and improving the equipment's adaptability to diverse transfer needs. 2. By setting up a quick-change section, the guide block can be quickly disassembled and assembled using a snap-fit assembly and an unlocking assembly. The specific operation process is as follows: pull the locking rod upward to separate it from the stop block, and the spring telescopic rod retracts to separate the slide rod two from the locking block, so that the old guide block can be removed; when installing a new guide block, reset the slide rod two so that it passes through the locking block, and release the locking rod so that it is locked onto the slide rod two to complete the fixation. The significance of this is that when the guide block is worn or needs to be adapted to special specifications of roll material, the guide block can be easily replaced through simple operation, reducing equipment maintenance time and ensuring the continuity and efficiency of lining processing and transfer.
[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the adjustment part of this utility model. Figure 3 This is a partial cross-sectional view of the adjustment part of this utility model; Figure 4 This is an exploded structural diagram of the adjusting part of this utility model; Figure 5 This is an exploded structural diagram of the quick-change part of this utility model; Figure 6 This is a partial structural diagram of the quick-change part of this utility model. Figure 7 This is a schematic diagram of the rectangular rod structure of this utility model.
[0014] The attached diagram lists the components represented by each number as follows: 1. Conveying section; 111. Support leg; 112. Support frame; 113. Conveying assembly; 114. Guide block; 2. Adjusting section; 21. Adjusting assembly; 211. Circular groove; 212. Disc; 213. Arc-shaped chute; 214. Slide rod one; 215. Straight chute; 216. Rectangular rod; 217. T-shaped chute; 218. T-shaped slider; 22. Power assembly; 221. Motor frame; 222. Motor; 223. Rotary... 3. Shaft; 3. Quick Replacement Part; 31. Snap-on Assembly; 311. Rectangular Plate; 312. Bracket; 3121. Horizontal Plate; 3122. Connecting Plate; 313. Support Block; 314. Slide Rod II; 315. Locking Block; 316. Circular Block; 317. Fixing Block; 318. Spring Telescopic Rod; 32. Unlocking Assembly; 321. Support Block II; 322. Locking Rod; 3221. Arc-shaped Block; 323. Pulling Block; 324. Abutment Block. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1-7 As shown, this utility model is a transfer device for lining processing, including two support legs 111 and a support frame 112 fixedly connected to the top of the two support legs 111. It also includes: a conveying part 1, which is disposed on the two support legs 111; an adjusting part 2, which is mounted on the support frame 112; and two quick-change parts 3, which are arranged in a mirror image above the two support legs 111. The conveying part 1 includes a conveying assembly 113 disposed between the two support legs 111. Two guide blocks 114 are disposed above the conveying assembly 113. The two guide blocks 114 are mirror images of each other and are located inside the support frame 112. The outer sides of the two guide blocks 114 are fixedly connected to the two quick-change parts 3 respectively.
[0017] The adjustment unit 2 includes an adjustment assembly 21, which is mounted on the support frame 112; and a power assembly 22, which is also mounted on the support frame 112. The adjustment assembly 21 includes a circular groove 211 formed on the top of the support frame 112. A disc 212 is rotatably connected to the inner wall of the circular groove 211. Two arc-shaped sliding grooves 213 are formed on the disc 212. A sliding rod 214 is provided on the inner wall of each of the two arc-shaped sliding grooves 213. The inner walls of the two arc-shaped sliding grooves 213 are respectively connected to the outer walls of the two sliding rods 214. The bottom inner wall of the circular groove 211 has two opposing straight sliding grooves 215. The outer walls of the two sliding rods 214 are slidably connected to the inner walls of the two straight sliding grooves 215 respectively. The bottoms of the two sliding rods 214 pass through the straight sliding grooves 215 and are fixedly connected to rectangular rods 216. The two rectangular rods 216 are located below the top inner wall of the support frame 112 and are arranged in a mirror image. Guide members are provided on the two rectangular rods 216. The two arc-shaped sliding grooves 213 are distributed in a circumferential array on the disc 212. The guide includes two T-shaped grooves 217 respectively opened on two rectangular rods 216, and a number of T-shaped sliders 218 are fixedly connected to the top inner wall of the support frame 112; the inner walls of the number of T-shaped grooves 217 are slidably connected to the outer walls of the corresponding T-shaped sliders 218 respectively. The power assembly 22 includes a motor frame 221 fixedly connected to the top of the support frame 112. The output shaft of the motor frame 221 is fixedly connected to a rotating shaft 223 via a coupling. The bottom of the rotating shaft 223 rotatably passes through the motor frame 221. The rotating shaft 223 passes through the disc 212 and is fixedly connected to it.
[0018] By setting the adjustment section 2, the position of the guide block 114 can be flexibly adjusted according to the changes in the specifications of the lining roll in actual production, ensuring stability and adaptability during the transfer process and improving the equipment's ability to adapt to diverse transfer needs.
[0019] The quick-change unit 3 includes a latching assembly 31, which is mounted on a corresponding rectangular rod 216; and an unlocking assembly 32, which is mounted on the latching assembly 31 and located above the conveying assembly 113. The latching assembly 31 includes two rectangular plates 311 fixedly connected to the bottom of the rectangular rod 216. An H-shaped bracket 312 is fixedly connected to one side of the two rectangular plates 311 near the circular groove 211. The H-shaped bracket 312 includes two parallel horizontal plates 3121 and a connecting plate 3122 fixedly connected between the two horizontal plates 3121. The two horizontal plates 3121 and the connecting plate 3122 are integrally formed to constitute the H-shaped bracket 312. The two rectangular plates 311 are fixedly connected to the horizontal plates 3121 of the H-shaped bracket, and a gap is left between the two rectangular plates 311 and the side wall of the connecting plate 3122 of the H-shaped bracket. Two symmetrically arranged support blocks 313 are fixedly connected to the side of the connecting plate 3122 of the frame away from the circular groove 211. Each support block 313 has a sliding rod 314 passing through it. The two sliding rods 314 are slidably connected to the two support blocks 313 respectively. Two locking blocks 315 are fixedly connected to the outer wall of the guide block 114. After the two locking blocks 315 are inserted into the corresponding gaps, their opposite sides contact the two rectangular plates 311 respectively, and their opposite sides contact the side wall of the connecting plate 3122 of the H-shaped bracket. The opposite sides of the two sliding rods 314 pass through the locking blocks 315 respectively, and the outer walls of the two sliding rods 314 contact the inner walls of the two locking blocks 315 respectively. Elastic elements are provided on the two sliding rods 314. The outer wall of the corresponding guide block 114 contacts the inner wall of the H-shaped bracket 312. The elastic element includes a circular block 316 fixedly connected to one end of each of the two slide rods 314. A fixing block 317 is fixedly connected to the middle of the outer side of the connecting plate 3122 of the H-shaped bracket. Two spring telescopic rods 318 are fixedly connected to the two side walls of the fixing block 317. The side of the two spring telescopic rods 318 away from the fixing block 317 is fixedly connected to the circular block 316 at the end of each of the two slide rods 314. After the corresponding guide block 114 is fixed, the two spring telescopic rods 318 are in a stretched state. The unlocking component 32 includes two support blocks 321 fixedly connected to the outside of the connecting plate 3122 of the H-shaped bracket. Each support block 321 has a vertically penetrating locking rod 322. The two locking rods 322 are slidably connected to the two support blocks 321 respectively. The bottom of each locking rod 322 is provided with an arc-shaped block 3221 that matches the outer wall of the slide rod 214. The two arc-shaped blocks 3221 are in contact with the outer walls of the two slide rods 214 respectively. A lever 323 is fixedly connected to the side of each locking rod 322 away from the connecting plate 3122 of the H-shaped bracket. A stop block 324 is fixedly connected to the outer wall of each slide rod 314. The sides of the two stop blocks 324 that are close to each other abut against the side walls of the arc-shaped blocks 3221 at the bottom of the two locking rods 322 respectively.
[0020] By setting up a quick-change unit 3, when the guide block 114 is worn or needs to be adapted to special specifications of roll material, the guide block 114 can be easily replaced through simple operation, reducing equipment maintenance time and ensuring the continuity and efficiency of lining processing and transfer.
[0021] A specific application of this embodiment is as follows: In use, the rolled lining fabric is placed on the conveying assembly 113 with its axis parallel to the conveying direction of the conveying assembly 113. Then, the motor 222 on the motor frame 221 is turned on. The motor 222 drives the disc 212 to rotate in the circular groove 211 through the rotating shaft 223. As a result, the disc 212 drives the two slide rods 214 to move closer to each other under the guidance of the two straight slide grooves 215 through the two arc-shaped slide grooves 213. The two rectangular rods 216 move with the two slide rods 214 through several T-shaped slide grooves. Guided by 217 and several T-shaped sliders 218, the two rectangular rods 216 move closer together through several rectangular plates 311, causing the two H-shaped supports 312 to move closer together. The two H-shaped supports 312 then move their guide blocks 114 closer together until the two guide blocks 114 contact the lining roll and center it. At this point, the motor 222 stops, and the conveying assembly 113 is opened to begin transferring the lining roll. Similarly, controlling the motor 222 to reverse direction can move the two guide blocks 114 away from each other. This process is repeated. The spacing between the two guide blocks 114 is adjustable to transport rolls of different specifications. When the guide block 114 needs to be replaced, pull the two locking rods 322 upwards using the lever 323 until the two locking rods 322 separate from the two abutments 324 respectively. The two spring telescopic rods 318 retract and drive the two sliding rods 314 closer together through the two circular blocks 316 until the two sliding rods 314 separate from the two locking blocks 315 respectively. At this time, the guide block 114 on the H-shaped bracket 312 can be removed, and the new guide block 114 is placed on the bracket 31. After step 2, the two locking blocks 315 on the guide block 114 pass through the gap between the two rectangular plates 311 and the H-shaped bracket 312, and then the two sliding rods 314 are reset. The two sliding rods 314 pass through the two locking blocks 315 respectively, so that the two spring telescopic rods 318 are stretched again, releasing the two locking rods 322. The two locking rods 322 fall with gravity and lock onto the two sliding rods 314 respectively. The two abutments 324 prevent the two sliding rods 314 from getting close to each other, thus completing the replacement of the guide block 114. The same principle applies to the other side.
[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0023] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A transfer device for lining processing, comprising two support legs (111) and a support frame (112) fixedly connected to the top of the two support legs (111), characterized in that, Also includes: A conveying unit (1) is provided on two support legs (111); Adjustment part (2), said adjustment part (2) is mounted on support frame (112); There are two quick-change parts (3), which are arranged in a mirror image above the two support legs (111). The adjustment part (2) includes an adjustment component (21), which is mounted on the support frame (112); as well as A power assembly (22) is mounted on a support frame (112); The adjustment assembly (21) includes a circular groove (211) on the top of the support frame (112). A disc (212) is rotatably connected to the inner wall of the circular groove (211). Two arc-shaped sliding grooves (213) are provided on the disc (212). A sliding rod (214) is provided on the inner wall of each of the two arc-shaped sliding grooves (213). The inner walls of the two arc-shaped sliding grooves (213) are in contact with the outer walls of the two sliding rods (214). Two straight sliding grooves (215) are provided on the bottom inner wall of the circular groove (211). The outer walls of the two sliding rods (214) are slidably connected to the inner walls of the two straight sliding grooves (215). After the bottom of the two sliding rods (214) passes through the straight sliding grooves (215), a rectangular rod (216) is fixedly connected to each of the two rectangular rods (216). Guide members are provided on the two rectangular rods (216). Among them, two arc-shaped grooves (213) are arranged in a circular array on the disk (212).
2. The conveying equipment for lining processing according to claim 1, characterized in that, The power assembly (22) includes a motor frame (221) fixedly connected to the top of the support frame (112). The output shaft of the motor frame (221) is fixedly connected to a rotating shaft (223) via a coupling. The bottom of the rotating shaft (223) rotates through the motor frame (221). The rotating shaft (223) passes through the disk (212) and is fixedly connected to it.
3. The conveying equipment for lining processing according to claim 1, characterized in that, The guide includes two T-shaped grooves (217) respectively opened on two rectangular rods (216), and a number of T-shaped sliders (218) are fixedly connected to the top inner wall of the support frame (112). Among them, the inner walls of several T-shaped grooves (217) are slidably connected to the outer walls of the corresponding T-shaped sliders (218).
4. The conveying equipment for lining processing according to claim 1, characterized in that, The conveying unit (1) includes a conveying assembly (113) disposed between two support legs (111), and two guide blocks (114) are disposed above the conveying assembly (113). The two guide blocks (114) are mirror images of each other and are located inside the support frame (112). The outer sides of the two guide blocks (114) are fixedly connected to the two quick-change parts (3).
5. The conveying equipment for lining processing according to claim 4, characterized in that, The quick-change part (3) includes a snap-fit assembly (31) disposed on a corresponding rectangular rod (216); and Unlocking component (32) is disposed above the conveying component (113).
6. The conveying equipment for lining processing according to claim 5, characterized in that, The buckle assembly (31) includes two rectangular plates (311) fixedly connected to the bottom of the rectangular rod (216). A bracket (312) is fixedly connected to the side of the two rectangular plates (311) near the circular groove (211). The bracket (312) includes two parallel horizontal plates (3121) and a connecting plate (3122) fixedly connected between the two horizontal plates (3121). The two rectangular plates (311) are respectively fixedly connected to the horizontal plates (3121). A gap is left between the two rectangular plates (311) and the sidewall of the connecting plate (3122). Two support blocks (313) are fixedly connected to the side of the connecting plate (3122) away from the circular groove (211). Each of the support blocks (313) has a sliding rod (314) passing through it. The two sliding rods (314) are slidably connected to the two support blocks (313) respectively. The outer wall of the guide block (114) is fixedly connected to two locking blocks (315). The two sliding rods (314) are respectively connected to the locking blocks (315) on the side away from each other. The outer walls of the two sliding rods (314) are respectively in contact with the inner walls of the two locking blocks (315). The side away from each other of the two locking blocks (315) are respectively in contact with the two rectangular plates (311). The side close to each other of the two locking blocks (315) are in contact with the bracket (312). The two sliding rods (314) are provided with elastic elements. The outer wall of the corresponding guide block (114) is in contact with the inner wall of the bracket (312).
7. The conveying equipment for lining processing according to claim 6, characterized in that, The unlocking component (32) includes two support blocks (321) fixedly connected to the outside of the connecting plate (3122). Each of the two support blocks (321) has a locking rod (322) passing through it. The two locking rods (322) are slidably connected to the two support blocks (321). The bottom of each locking rod (322) is in contact with the outer wall of each of the two sliding rods (214). Each of the two locking rods (322) has a lever (323) fixedly connected to the side away from the connecting plate (3122). Each of the two sliding rods (314) has a stop block (324) fixedly connected to the outer wall of each of the two sliding rods (314). Among them, the two abutments (324) abut against each other on the side that is close to each other, respectively, and the two levers (322).
8. The conveying equipment for lining processing according to claim 7, characterized in that, The elastic element includes a circular block (316) fixedly connected to one end of each of the two slide rods (314), and a fixing block (317) fixedly connected to the middle of the outer side of the connecting plate (3122). Two spring telescopic rods (318) are fixedly connected to the two side walls of the fixing block (317). The side of the two spring telescopic rods (318) away from the fixing block (317) is fixedly connected to the circular block (316) at the end of the two slide rods (314). Among them, after the corresponding guide block (114) is fixed, the two spring telescopic rods (318) are in a stretched state.