Dye liquor recovery device of airflow dyeing machine

Abstract

The dye liquor recovery device comprises a rack, an extrusion roller set and a recovery box, the extrusion roller set is connected to the rack and arranged above the recovery box, the top of the recovery box is open, a first filter plate is connected into the recovery box, a scraping plate is slidably connected into the recovery box, and the bottom of the scraping plate makes contact with the top of the first filter plate; the recycling box is provided with a moving assembly used for driving the scraper to be slidably connected into the recycling box in the length direction of the recycling box. The moving assembly drives the scraper to move back and forth in the length direction of the recycling box so as to push impurities at the top of the first filter plate to move, the situation that the impurities block the first filter plate is reduced, and the filter efficiency of the dye liquor is improved.

Description

Technical Field

[0001] This application relates to the field of airflow dyeing machines, and more particularly to a dye liquor recovery device for an airflow dyeing machine. Background Technology

[0002] Wool fabrics, also known as woolen fabrics or yarns, include various woolen materials and yarns made from wool, cashmere, rabbit hair, and other animal fibers using modern spinning technology. Wool fabrics are primarily used for clothing, with a small amount used in industry. Currently, the most popular imitation wool fabrics on the market are polyester-viscose blends. Polyester-viscose blends overcome the drawback of pure wool fabrics being unsuitable for washing, but they suffer from poor abrasion resistance, poor antistatic properties, and poor elasticity. Wool fabrics are typically dyed using airflow dyeing machines, which are crucial equipment in the modern textile printing and dyeing industry and widely used in the dyeing of various fabrics. In actual production, the fabric exit stage after dyeing faces many challenges, especially the effective handling of the dye liquor carried out, which has become a pressing issue for the industry.

[0003] Chinese patent CN221956340U discloses an airflow dyeing machine with a fabric discharge device, including a dyeing machine body, a frame connected to the airflow dyeing machine body, a guide roller, and a guide plate. The frame is connected to a recovery tank, and a filter screen is connected inside the recovery tank. The guide plate guides the dye liquor into the dyeing machine body, reducing dye liquor waste.

[0004] Regarding the aforementioned technologies, after prolonged use, impurities may adhere to the surface of the filter screen, causing blockage and thus affecting filtration efficiency. Utility Model Content

[0005] In order to reduce the clogging of the first filter plate by impurities and improve the filtration efficiency of the dye liquor, this application provides a dye liquor recovery device for an airflow dyeing machine.

[0006] The dye liquor recovery device for an airflow dyeing machine provided in this application adopts the following technical solution:

[0007] A dye liquor recovery device for an airflow dyeing machine includes a frame, a set of extrusion rollers, and a recovery box. The extrusion rollers are connected to the frame and positioned above the recovery box. The recovery box has an opening at the top and a first filter plate is connected inside the recovery box. A scraper is slidably connected inside the recovery box, with the length direction of the scraper aligned with the width direction of the recovery box. The bottom of the scraper contacts the top of the first filter plate. The recovery box is equipped with a moving component for driving the scraper to slide along the length direction of the recovery box and remain connected inside the recovery box.

[0008] By adopting the above technical solution, during use, the fabric passes through the extrusion roller group, which extrudes the fabric, causing excess dye liquor to drip into the recycling box. The first filter plate filters the dye liquor, thereby reducing impurities in the dye liquor. When the dye liquor passes through the first filter plate, the moving component drives the scraper to move back and forth along the length of the recycling box, thereby pushing the impurities on the top of the first filter plate to move, thus reducing the situation of impurities clogging the first filter plate and improving the filtration efficiency of the dye liquor.

[0009] Optionally, the frame has a moving slot, the length direction of which is consistent with the length direction of the recycling bin. The moving component includes a lead screw, a first motor, and a slider. The length direction of the lead screw is consistent with the length direction of the recycling bin. The lead screw is rotatably connected to the moving slot. The slider is threaded onto the lead screw and is slidably connected to the moving slot along the length direction of the recycling bin. The first motor is connected to the frame, and the output shaft of the first motor is connected to one end of the lead screw. One end of the scraper along its length direction is connected to the slider.

[0010] By adopting the above technical solution, the first motor drives the lead screw to rotate, thereby driving the slider to move along the length of the recovery box, which in turn drives the scraper to move along the length of the recovery box. This facilitates the scraper to push away impurities, thereby reducing the situation where impurities clog the first filter plate and improving the filtration efficiency of the dye liquor.

[0011] Optionally, the recycling bin has cleaning ports at both ends along its length, the length of the cleaning ports being consistent with the width of the recycling bin. The cleaning ports are located above the first filter plate. The scraper is slidably connected to the cleaning port along the length of the recycling bin. An opening and closing component is connected inside the cleaning port, which is used to open or close the cleaning port.

[0012] By adopting the above technical solution, when cleaning the first filter plate, the opening and closing component opens the cleaning port, which facilitates the scraper to push impurities away from the first filter plate, thereby reducing impurities on the surface of the first filter plate and reducing the situation of impurities clogging the first filter plate.

[0013] Optionally, a collection box is connected to both ends of the recycling bin along its length direction. The length direction of the collection box is consistent with the width direction of the recycling bin. The top of the collection box is open. The collection box is located below the cleaning port. A second filter plate is connected inside the collection box. The length direction of the second filter plate is consistent with the length direction of the collection box.

[0014] By adopting the above technical solution, when cleaning the first filter plate, the cleaning port is opened, and the moving component drives the scraper to move, thereby moving the scraper along the length of the recycling box, and causing the scraper to push the impurities to move and drive the impurities into the collection box, thereby reducing the situation where impurities fall into the surrounding environment and cause pollution. In addition, a second filter plate is added to reduce the amount of dye liquor in the impurities, which facilitates the recycling of dye liquor and reduces the waste of dye liquor.

[0015] Optionally, a connecting groove is formed on the inner wall at the bottom of the cleaning port. The length direction of the connecting groove is consistent with the width direction of the recycling bin, and the depth direction of the connecting groove is consistent with the vertical direction. The opening and closing component includes a baffle and a driving component. The length direction of the baffle is consistent with the width direction of the recycling bin. The baffle is slidably connected to the connecting groove in the vertical direction. The baffle is used to open or close the cleaning port. The recycling bin is connected to the driving component, which is used to drive the baffle to move.

[0016] By adopting the above technical solution, when cleaning the first filter plate, the driving component drives the baffle to move downward in the vertical direction, so that the baffle slides in the vertical direction and is connected in the connecting groove, thereby opening the cleaning port and making it easier for the scraper to push the impurities away from the first filter plate.

[0017] Optionally, a cleaning plate is connected to the top of the collection box. The length direction of the cleaning plate is consistent with the width direction of the collection box. When the scraper moves above the collection box, the cleaning plate contacts the scraper. The slider is connected to a lifting component, which is used to drive the scraper to move in the vertical direction.

[0018] By adopting the above technical solution, when cleaning the first filter plate, the scraper pushes the impurities and moves them to the collection box. When the scraper moves above the collection box, the cleaning plate contacts the scraper, and the lifting component drives the scraper to move in the vertical direction. This allows the cleaning plate to push the impurities adhering to the scraper surface away from the scraper, reducing the impurities on the scraper surface and improving the cleaning effect of the scraper.

[0019] Optionally, a support block is connected to the top of the collection box. The length direction of the support block is consistent with the width direction of the collection box. The width direction of the cleaning plate is consistent with the length direction of the collection box. An installation block is connected to the cleaning plate along its width direction and at one end away from the scraper. There are two installation blocks, which are spaced apart along the length direction of the cleaning plate. The support block is located between the two installation blocks. The support block is connected to a locking component. The installation block is detachably connected to the support block through the locking component.

[0020] By adopting the above technical solution, when cleaning the collection box and the cleaning plate, the cleaning plate is removed from the support block, which makes it easier for operators to clean the impurities in the collection box and to clean and replace the cleaning plate.

[0021] Optionally, the support block has a mounting groove at one end along its length direction, the length direction of the mounting groove being consistent with the length direction of the support block. The locking component includes a first spring and a locking block. The length direction of the first spring is consistent with the length direction of the support block. One end of the first spring is connected to the inner wall of the mounting groove, and the other end of the first spring is connected to the locking block. The locking block is slidably connected to the mounting groove along the length direction of the support block. The locking block is a rectangular block. The mounting block has a locking hole, the locking hole being a rectangular hole, and the locking block passes through the locking hole.

[0022] By adopting the above technical solution, when disassembling the cleaning plate, the locking block is pressed along the length of the support block, so that the locking block is embedded in the mounting groove, and the locking block squeezes the first spring and drives the first spring to deform, so that the locking block moves away from the locking hole, thereby facilitating the mounting block to move away from the support block and facilitating the cleaning and replacement of the cleaning plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During use, the fabric passes through the squeezing roller group, which squeezes the fabric, causing excess dye liquor to drip into the recycling box. The first filter plate filters the dye liquor, thereby reducing impurities in the dye liquor. When the dye liquor passes through the first filter plate, the moving component drives the scraper to move back and forth along the length of the recycling box, thereby pushing the impurities on the top of the first filter plate to move, thus reducing the situation of impurities clogging the first filter plate and improving the filtration efficiency of the dye liquor.

[0025] 2. The first motor drives the lead screw to rotate, which in turn drives the slider to move along the length of the recovery box, which in turn drives the scraper to move along the length of the recovery box. This makes it easier for the scraper to push away impurities, thereby reducing the clogging of the first filter plate by impurities and improving the filtration efficiency of the dye liquor.

[0026] 3. When cleaning the first filter plate, the scraper pushes the impurities and moves them to the collection box. When the scraper moves above the collection box, the cleaning plate contacts the scraper, and the lifting component moves the scraper vertically. This causes the cleaning plate to push the impurities adhering to the scraper surface away from the scraper, reducing the impurities on the scraper surface and improving the cleaning effect of the scraper. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0028] Figure 2 This is a top view of this embodiment.

[0029] Figure 3 This is the embodiment. Figure 2 Sectional view along the AA direction.

[0030] Figure 4 This is the embodiment. Figure 2 Sectional view along the BB direction.

[0031] Figure 5 This is the embodiment. Figure 2 A cross-sectional view along the CC direction.

[0032] Explanation of reference numerals in the attached drawings: 100, frame; 110, guide plate; 120, moving trough; 200, extrusion roller group; 210, first roller; 220, second roller; 300, recovery box; 310, drain pipe; 320, first filter plate; 330, cleaning port; 340, connecting groove; 341, limiting hole; 350, collection box; 351, second filter plate; 352, fixing plate; 353, support block; 354, mounting groove; 400. Scraper; 410, Moving block; 500, Moving component; 510, Lead screw; 520, First motor; 530, Slider; 540, Connecting block; 541, Lifting groove; 550, Second cylinder; 600, Opening and closing component; 610, Baffle; 611, Limit block; 620, First cylinder; 700, Cleaning plate; 710, Mounting block; 711, Locking hole; 800, Locking component; 810, First spring; 820, Locking block. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a dye liquor recovery device for an airflow dyeing machine. (Refer to...) Figure 1 and Figure 2 A dye liquor recovery device for an airflow dyeing machine includes a frame 100, a set of extrusion rollers 200, and a recovery box 300. The set of extrusion rollers 200 is rotatably connected to the frame 100. The recovery box 300 has an opening at the top and the set of extrusion rollers 200 is located above the recovery box 300. The length direction of the recovery box 300 is consistent with the length direction of the extrusion rollers. The bottom of the recovery box 300 is connected to a drain pipe 310, which is used to guide the dye liquor into the next processing step.

[0035] Reference Figure 1 and Figure 3A first filter plate 320 is connected inside the recovery tank 300. The length of the first filter plate 320 is aligned with the length of the recovery tank 300. The first filter plate 320 is horizontally positioned, and its periphery is connected to the inner wall of the recovery tank 300. A scraper 400 is slidably connected inside the recovery tank 300. The length of the scraper 400 is aligned with the width of the recovery tank 300, and the bottom of the scraper 400 contacts the top of the first filter plate 320. A moving assembly 500 is connected to the frame 100. The moving assembly 500 is used to drive the scraper 400 to slide along the length of the recovery tank 300. In use, the moving assembly 500 drives the scraper 400 to move along the length of the recovery tank 300, thereby pushing away impurities and reducing the likelihood of impurities clogging the first filter plate 320, thus improving the filtration efficiency of the dye liquor.

[0036] Reference Figure 1 The frame 100 is connected to a guide plate 110. One end of the guide plate 110 is positioned near the discharge end of the dyeing machine body, while the other end is inclined downwards. The end of the guide plate 110 away from the dyeing machine body is positioned above the recycling bin 300. The extrusion roller assembly 200 includes a first roller 210 and a second roller 220 rotatably connected to the frame 100. The length direction of the first roller 210 is aligned with the length direction of the recycling bin 300, and the length direction of the second roller 220 is aligned with the length direction of the first roller 210. The first roller 210 and the second roller 220 are distributed vertically at intervals, with gaps between them for the fabric to pass through.

[0037] Reference Figure 3 and Figure 4 The frame 100 has a moving groove 120, the length of which is aligned with the length of the recycling bin 300. The moving assembly 500 includes a lead screw 510, a first motor 520, and a slider 530. The lead screw 510 is aligned with the length of the recycling bin 300, and its two ends are rotatably connected to the corresponding inner walls of the moving groove 120. The slider 530 is threaded onto the lead screw 510 and slidably connected within the moving groove 120 along the length of the recycling bin 300. The first motor 520 is connected to the frame 100, and its output shaft is connected to one end of the lead screw 510. A connecting block 540 is connected to the slider 530 along the width of the recycling bin 300 and close to the side of the recycling bin 300. The connecting block 540 is aligned with the vertical direction and has a lifting groove 541, the length of which is aligned with the vertical direction. A movable block 410 is connected to one end of the scraper 400 along its length. The movable block 410 is connected to the top of the scraper 400 and slides vertically within the lifting groove 541. The first motor 520 drives the lead screw 510 to rotate, thereby driving the slider 530 to move along the length of the recycling box 300. The slider 530 then drives the scraper 400 to move.

[0038] Reference Figure 3 The recycling bin 300 has cleaning ports 330 at both ends along its length. The length of the cleaning ports 330 is the same as the width of the recycling bin 300. The cleaning ports 330 are located above the first filter plate 320, and the bottom inner wall of the cleaning ports 330 is on the same plane as the top of the first filter plate 320. An opening and closing assembly 600 is connected inside the cleaning ports 330. A connecting groove 340 is formed on the bottom inner wall of the cleaning ports 330. The length of the connecting groove 340 is the same as the width of the recycling bin 300, and the depth of the connecting groove 340 is the same as the vertical direction. The opening and closing assembly 600 includes a baffle 610 and a driving component. The length of the baffle 610 is the same as the width of the recycling bin 300. The baffle 610 is slidably connected to the connecting groove 340 in the vertical direction. When the baffle 610 is located inside the cleaning port 330, both ends of the baffle 610 along its length contact the corresponding inner wall of the cleaning port 330. A limiting hole 341 is provided at the end of the connecting groove 340 along the length of the recycling bin 300 and away from the recycling bin 300. The length direction of the limiting hole 341 is consistent with the vertical direction. A limiting block 611 is connected to the end of the baffle 610 near the limiting hole 341. The limiting block 611 is slidably connected to the limiting hole 341 in the vertical direction. The driving component is a first cylinder 620, which is connected to the side wall of the recycling bin 300, and the piston rod of the first cylinder 620 is connected to the bottom of the limiting block 611.

[0039] Reference Figure 3 The recycling bin 300 has collection bins 350 connected to both ends along its length. The length of the collection bins 350 is the same as the width of the recycling bin 300, and the top of the collection bins 350 is open. The collection bins 350 are located below the cleaning port 330. A second filter plate 351 is connected inside the collection bin 350. The length of the second filter plate 351 is the same as the length of the collection bin 350, and its periphery is connected to the inner wall of the collection bin 350. When cleaning the first filter plate 320, the opening and closing assembly 600 opens the cleaning port 330, and the scraper 400 pushes impurities through the cleaning port 330 and causes them to fall into the collection bins 350, thereby facilitating the collection of impurities.

[0040] Reference Figure 3 and Figure 4A fixing plate 352 is connected to the top of the collection box 350. The length direction of the fixing plate 352 is consistent with the width direction of the recycling box 300. The fixing plate 352 is vertically arranged and connected to the end of the collection box 350 along the length direction of the recycling box 300 and away from the recycling box 300. A cleaning plate 700 is detachably connected to the top of the fixing plate 352. The length direction of the cleaning plate 700 is consistent with the width direction of the recycling box 300, and the width direction of the cleaning plate 700 is consistent with the length direction of the recycling box 300. A lifting component is connected to the connecting block 540. The lifting component is a second cylinder 550. The second cylinder 550 is connected to the top of the connecting block 540, and the piston rod of the second cylinder 550 passes through the inner wall of the top of the lifting groove 541 in a vertical direction. The piston rod of the second cylinder 550 is connected to the top of the moving block 410. When the scraper 400 moves above the collection box 350, the scraper 400 contacts the cleaning plate 700, and the second cylinder 550 drives the scraper 400 to move upward in the vertical direction, so that the cleaning plate 700 pushes the impurities on the surface of the scraper 400 away from the scraper 400, thereby reducing the impurities on the surface of the scraper 400.

[0041] Reference Figure 3 and Figure 5 The top of the fixed plate 352 is connected to a support block 353. The length direction of the support block 353 is consistent with the length direction of the fixed plate 352. The cleaning plate 700 is connected to two mounting blocks 710 along its width direction and away from the scraper 400. The two mounting blocks 710 are distributed at intervals along the length direction of the cleaning plate 700. The support block 353 is located between the two mounting blocks 710.

[0042] Reference Figure 3 and Figure 4 A locking component 800 is connected to a support block 353. The support block 353 has mounting grooves 354 at both ends along its length, with the length of the mounting grooves 354 aligned with the length of the support block 353. The locking component 800 includes a locking block 820 connected to a first spring 810. The length of the first spring 810 is aligned with the length of the support block 353. One end of the first spring 810 is connected to the inner wall of the mounting groove 354, and the other end is connected to the locking block 820. The locking block 820 is slidably connected within the mounting groove 354 along the length of the support block 353 and is rectangular. A locking hole 711 is provided on the mounting block 710. The locking hole 711 is rectangular, and the locking block 820 corresponds to each locking hole 711, passing through the locking hole 711. A guide surface is provided on the top of the locking block 820, with the guide surface inclined and located at the end of the locking block 820 away from the first spring 810. When disassembling the cleaning plate 700, press the locking block 820 to move the locking block 820 away from the locking hole 711, so that the cleaning plate 700 can be moved away from the fixing plate 352, thereby facilitating the replacement and cleaning of the cleaning plate 700.

[0043] The implementation principle of the dye liquor recovery device of the airflow dyeing machine in this application embodiment is as follows: During use, the extrusion roller group 200 extrudes the fabric, thereby squeezing the dye liquor out of the fabric and dripping it into the recovery box 300. The dye liquor passes through the first filter plate 320, thereby reducing the impurity content in the dye liquor. When the dye liquor passes through the first filter plate 320, the first motor 520 drives the lead screw 510 to rotate, thereby driving the slider 530 to move along the length direction of the recovery box 300, and causing the scraper 400 to move with the slider 530. This causes the scraper 400 to push away impurities, reducing the possibility of impurities clogging the first filter plate 320 and improving the dye liquor filtration efficiency.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dye liquor recovery device of an air flow dyeing machine, comprising a rack (100), an extrusion roller group (200), and a recovery tank (300), the extrusion roller group (200) is connected to the rack (100), the extrusion roller group (200) is arranged above the recovery tank (300), the top of the recovery tank (300) is provided with an opening, and a first filter plate (320) is connected in the recovery tank (300), characterized in that: The recycling box (300) is slidably connected with a scraper (400), the length direction of the scraper (400) is consistent with the width direction of the recycling box (300), the bottom of the scraper (400) is in contact with the top of the first filter plate (320), the recycling box (300) is provided with a moving assembly (500), and the moving assembly (500) is used for driving the scraper (400) to slide in the recycling box (300) along the length direction of the recycling box (300). ​ 2. A liquor recovery device for an air flow dyeing machine according to claim 1, characterized in that: The rack (100) is provided with a moving groove (120), the length direction of the moving groove (120) is consistent with the length direction of the recycling box (300), the moving assembly (500) comprises a lead screw (510), a first motor (520) and a sliding block (530), the length direction of the lead screw (510) is consistent with the length direction of the recycling box (300), the lead screw (510) is rotatably connected in the moving groove (120), the sliding block (530) is threadedly sleeved on the lead screw (510), the sliding block (530) is slidably connected in the moving groove (120) along the length direction of the recycling box (300), the first motor (520) is connected to the rack (100), the output shaft of the first motor (520) is connected to one end of the lead screw (510), and the scraper (400) is connected to the sliding block (530) at one end along the length direction of the scraper (400).

3. A liquor recovery device for an air flow dyeing machine according to claim 2, characterised in that: The recycling box (300) is provided with a cleaning port (330) at both ends along the length direction, the length direction of the cleaning port (330) is consistent with the width direction of the recycling box (300), the cleaning port (330) is arranged above the first filter plate (320), the scraper (400) is slidably connected in the cleaning port (330) along the length direction of the recycling box (300), and the cleaning port (330) is connected with an opening and closing assembly (600). The opening and closing assembly (600) is used for opening or closing the cleaning port (330).

4. A liquor recovery device for an air flow dyeing machine according to claim 3, characterised in that: The recycling box (300) is connected with a collecting box (350) at both ends along the length direction, the length direction of the collecting box (350) is consistent with the width direction of the recycling box (300), the collecting box (350) is provided with an open top, the collecting box (350) is arranged below the cleaning port (330), and the collecting box (350) is connected with a second filter plate (351). The length direction of the second filter plate (351) is consistent with the length direction of the collecting box (350).

5. A liquor recovery device for an air flow dyeing machine according to claim 3, characterised in that: A connecting groove (340) is formed in the inner wall of the bottom of the cleaning port (330), the length direction of the connecting groove (340) is consistent with the width direction of the recycling box (300), the depth direction of the connecting groove (340) is consistent with the vertical direction, the opening and closing assembly (600) comprises a baffle (610) and a driving element, the length direction of the baffle (610) is consistent with the width direction of the recycling box (300), the baffle (610) is slidably connected in the connecting groove (340) along the vertical direction, the baffle (610) is used for opening or closing the cleaning port (330), and the recycling box (300) is connected with the driving element. The driving element is used for driving the baffle (610) to move.

6. A liquor recovery device for an air flow dyeing machine according to claim 4, characterised in that: The collecting box (350) top is connected with a cleaning plate (700), the cleaning plate (700) length direction is consistent with the width direction of the recycling box (300), when the scraper (400) moves to the collecting box (350) above, the cleaning plate (700) is contacted with the scraper (400), the slider (530) is connected with a lifting piece, the lifting piece is used to drive the scraper (400) to move along the vertical direction.

7. A liquor recovery device for an air flow dyeing machine according to claim 6, characterised in that: The collecting box (350) top is connected with a support block (353), the support block (353) length direction is consistent with the width direction of the recycling box (300), the cleaning plate (700) width direction is consistent with the length direction of the recycling box (300), the cleaning plate (700) is connected with a mounting block (710) along its width direction and away from the one end of the scraper (400), the mounting block (710) is equipped with two, two the mounting block (710) is spaced along the length direction of the cleaning plate (700), the support block (353) is equipped between two mounting blocks (710), the support block (353) is connected with a locking assembly (800), the mounting block (710) is detachably connected to the support block (353) through the locking assembly (800).

8. A liquor recovery device for an air flow dyeing machine according to claim 7, characterised in that: The support block (353) is provided with a mounting groove (354) along one end of its length direction, the mounting groove (354) length direction is consistent with the length direction of the support block (353), the locking assembly (800) includes a first spring (810), a locking block (820), the first spring (810) length direction is consistent with the length direction of the support block (353), one end of the first spring (810) is connected to the inner wall of the mounting groove (354), the other end of the first spring (810) is connected to the locking block (820), the locking block (820) is slidably connected in the mounting groove (354) along the length direction of the support block (353), the locking block (820) is provided as a rectangular block, the mounting block (710) is provided with a locking hole (711), the locking hole (711) is provided as a rectangular hole, the locking block (820) is provided in the locking hole (711).

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