An automatic hot air welding device

Abstract

The embodiment of the application provides an automatic hot air welding device, and relates to the technical field of hot air welding. The automatic hot air welding device comprises a frame body, a hot air welding machine, a feeding wheel, a first driving member and a material pressing mechanism. The frame body is provided with a material flow channel, and the material flow channel has a hot air welding station. The feeding wheel is rotatably arranged on the frame body, the first driving member is connected with the feeding wheel, and the first driving member is used for driving the feeding wheel to rotate. The material pressing mechanism is connected with the feeding wheel, and the material pressing mechanism has a material limiting part. The feeding wheel is used for driving the material pressing mechanism to move under the condition of rotation, so that the material limiting part of the material pressing mechanism periodically approaches or moves away from the hot air welding station. The material limiting part is used for continuously limiting the material at the hot air welding station under the condition of approaching the hot air welding station. The quality and efficiency caused by the instability of the manual operation mode of personnel can be avoided.

Description

Technical Field

[0001] This invention relates to the field of hot air welding technology, and more specifically, to an automatic hot air welding device. Background Technology

[0002] Existing hot air welding machines are all manually operated, and the welding quality and efficiency are determined by human operation, resulting in unstable welding efficiency and quality. Summary of the Invention

[0003] This invention provides an automatic hot air welding device that can avoid the instability in quality and efficiency caused by unstable human operation.

[0004] The embodiments of the present invention can be implemented as follows: This invention provides an automatic hot air welding device, comprising: The frame is provided with a material transfer channel, and the material transfer channel has a hot air welding station. A hot air welding machine, which is used to weld materials at a hot air welding station; A feeding wheel is rotatably mounted on the frame and is used to drive the material to move in the material flow channel so that the material enters the hot air welding station; A first driving member, connected to the feed wheel, is used to drive the feed wheel to rotate; and A pressing mechanism is connected to the feeding wheel. The pressing mechanism has a material limiting part. The feeding wheel is used to drive the pressing mechanism to move when it rotates, so that the material limiting part of the pressing mechanism periodically moves closer to or further away from the hot air welding station. The material limiting part is used to keep the material continuously confined at the hot air welding station when it is close to the hot air welding station.

[0005] In an optional embodiment, the pressing mechanism includes a pressing control disc and a pressing rod. The pressing control disc is connected to the feeding wheel. The pressing rod has spaced material limiting parts, rotating connecting parts, and sliding connecting parts. The sliding connecting parts are slidably connected to the pressing control disc, and the rotating connecting parts are rotatably connected to the frame. The feed wheel is used to drive the pressing control disc to move when it rotates, so that the material limiting part of the pressing mechanism periodically moves closer to or further away from the hot air welding station.

[0006] In an optional embodiment, the pressure control plate is provided with a first path groove and a second path groove connected end to end in sequence, and the sliding connection part is slidably connected to the first path groove and the second path groove; The sliding connection is used so that when the material limiting part slides relative to the first path groove, the material limiting part remains located at the hot air welding station, and when the sliding connection is used so that when the material limiting part slides relative to the second path groove, the material limiting part disengages from the hot air welding station.

[0007] In an optional embodiment, the pressing mechanism further includes a pressure roller, which is disposed on the material limiting part and is used to abut against the material located at the hot air welding station.

[0008] In an optional embodiment, the automatic hot air welding device further includes a material rotating wheel, which is rotatably mounted on the frame and is used to abut the material located at the hot air welding station.

[0009] In an optional embodiment, the automatic hot air welding device further includes a first transmission belt, a power pulley, and a second drive component. The second drive component is connected to the power pulley and is used to drive the power pulley to rotate. The power pulley is rotatably connected to the frame. The first transmission belt connects both the power pulley and the material rotating wheel.

[0010] In an optional embodiment, the automatic hot air welding device further includes a discharge wheel and a second transmission belt. The discharge wheel is rotatably connected to the frame, and the discharge wheel and the feed wheel are connected by the second transmission belt. The discharge wheel is used to drive the material located at the hot air welding station to move along the material flow channel and away from the hot air welding station.

[0011] In an optional embodiment, the discharge wheel includes a wheel disk and a material hook. The material hook is disposed on the periphery of the wheel disk. The wheel disk is rotatably connected to the frame. The wheel disk and the feed wheel are connected by the second transmission belt. The material hook is used to drive the material located at the hot air welding station to move along the material flow channel and away from the hot air welding station. The feed roller is provided with a material limiting port on its periphery. The material limiting port is used to drive the material to move in the material flow channel so that the material enters the hot air welding station.

[0012] In an optional embodiment, the frame is provided with a material collection trough, and the material collection trough is connected to the material transfer channel; The discharge wheel is used to drive the material located at the hot air welding station to move along the material flow channel and away from the hot air welding station, so that the material moves to the material collection tank.

[0013] In an optional embodiment, the frame is further provided with a feeding and stacking port, which is connected to the material flow channel.

[0014] The beneficial effects of the automatic hot air welding apparatus of the present invention include, for example: This invention provides an automatic hot air welding device, comprising a frame, a hot air welding machine, a feeding wheel, a first driving component, and a pressing mechanism. The frame has a material flow channel with a hot air welding station. The hot air welding machine is used to weld the material at the hot air welding station. The feeding wheel is rotatably mounted on the frame and drives the material to move in the material flow channel, allowing the material to enter the hot air welding station. The first driving component is connected to the feeding wheel and drives it to rotate. The pressing mechanism is connected to the feeding wheel and has a material limiting part. When the feeding wheel rotates, it drives the pressing mechanism to move, causing the material limiting part of the pressing mechanism to periodically move closer to or further away from the hot air welding station. The material limiting part is used to keep the material continuously confined at the hot air welding station when it is close to the hot air welding station. When the first drive unit drives the feeding wheel to rotate, the feeding wheel drives the material to move in the material flow channel, so that the material enters the hot air welding station. At the same time, since the feeding wheel can drive the pressing mechanism to move when it rotates, the material limiting part of the pressing mechanism periodically moves closer to or away from the hot air welding station. The material limiting part is used to keep the material continuously confined at the hot air welding station when it is close to the hot air welding station. The hot air welding machine can weld the material at the hot air welding station, realizing the automatic welding process of the material and avoiding the instability of quality and efficiency caused by the instability of manual operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram from a first perspective of the automatic hot air welding device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram from a second perspective of the automatic hot air welding apparatus provided in an embodiment of the present invention; Figure 3 This is a schematic diagram from a third perspective of the automatic hot air welding apparatus provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the first state of the operation process of the automatic hot air welding device provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of the second state of the operation process of the automatic hot air welding device provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the third state of the operation process of the automatic hot air welding device provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the fourth state of the operation process of the automatic hot air welding device provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the fifth state of the operation process of the automatic hot air welding device provided in the embodiments of the present invention; Figure 9 This is a schematic diagram of the sixth state of the operation process of the automatic hot air welding device provided in the embodiment of the present invention; Figure 10 This is a schematic diagram of the seventh state of the operation process of the automatic hot air welding device provided in the embodiment of the present invention; Figure 11 This is a schematic diagram of the eighth state of the operation process of the automatic hot air welding device provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the ninth state of the operation process of the automatic hot air welding device provided in an embodiment of the present invention.

[0017] Icons: 100-Frame; 110-Material collection trough; 120-Feed stacking port; 101-Material flow channel; 1011-Hot air welding station; 200-Hot air welding machine; 201-Air outlet; 300-Feeding wheel; 301-Material limiting port; 410-Pressure control panel; 411-First path trough; 412-Second path trough; 420-Pressure rod; 421-Material limiting part; 422-Rotating connection part; 423-Sliding connection part; 430-Pressure roller; 510-Material rotating wheel; 520-First transmission belt; 530-Power pulley; 600-Discharge wheel; 610-Disc; 620-Material hook; 700-Second transmission belt; 10-Material. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0024] As mentioned in the background section, existing hot air welding machines are all manually operated, and the welding quality and efficiency are determined by human operation, resulting in unstable welding efficiency and quality.

[0025] In view of this, please refer to Figures 1-12 The automatic hot air welding device provided in the embodiments of the present invention can solve this problem, and will be described in detail below.

[0026] Please refer to this first. Figures 1-3The automatic hot air welding device includes a frame 100, a hot air welding machine 200, a feeding wheel 300, a first driving component, and a pressing mechanism. The frame 100 is provided with a material flow channel 101, which has a hot air welding station 1011. The hot air welding machine 200 is used to weld the material 10 at the hot air welding station 1011. The feeding wheel 300 is rotatably mounted on the frame 100 and is used to drive the material 10 to move in the material flow channel 101 so that the material 10 enters the hot air welding station 1011. The first driving component is connected to the feeding wheel 300 and is used to drive the feeding wheel 300 to rotate. The pressing mechanism is connected to the feeding wheel 300 and has a material limiting part 421. When the feeding wheel 300 rotates, it drives the pressing mechanism to move so that the material limiting part 421 of the pressing mechanism periodically approaches or moves away from the hot air welding station 1011.

[0027] The material limiting part 421 is used to keep the material 10 continuously confined in the hot air welding station 1011 when it is close to the hot air welding station 1011. When the first driving member drives the feeding wheel 300 to rotate, the feeding wheel 300 drives the material 10 to move in the material flow channel 101, so that the material 10 enters the hot air welding station 1011. At the same time, since the feeding wheel 300 can drive the pressing mechanism to move when it rotates, the material limiting part 421 of the pressing mechanism periodically moves closer to or further away from the hot air welding station 1011. The material limiting part 421 is used to keep the material 10 continuously confined in the hot air welding station 1011 when it is close to the hot air welding station 1011. The hot air welding machine 200 can weld the material 10 in the hot air welding station 1011, realizing the automatic welding process of the material 10 and avoiding the instability of quality and efficiency caused by the instability of manual operation.

[0028] It should be noted that in this embodiment, material 10 can be understood as heat shrink tubing to be welded. The hot air welding machine 200 has an air outlet 201, through which the material 10 in the hot air welding station 1011 is welded.

[0029] The first driving component can be understood as a motor.

[0030] Specifically, the pressing mechanism includes a pressing control disc 410 and a pressing rod 420. The pressing control disc 410 is connected to the feeding wheel 300. The pressing rod 420 has a material limiting part 421, a rotating connection part 422 and a sliding connection part 423 distributed at intervals. The sliding connection part 423 is slidably connected to the pressing control disc 410, and the rotating connection part 422 is rotatably connected to the frame 100.

[0031] The feed wheel 300 is used to drive the pressing control disc 410 to move when it rotates, so that the material limiting part 421 of the pressing mechanism periodically approaches or moves away from the hot air welding station 1011.

[0032] In this embodiment, the pressure control plate 410 is provided with a first path groove 411 and a second path groove 412 connected end to end in sequence. The sliding connection part 423 is slidably connected to the first path groove 411 and the second path groove 412. The first path groove 411 is an arc-shaped groove and the second path groove 412 is a curved groove.

[0033] The sliding connection 423 is used to keep the material limiting part 421 continuously located in the hot air welding station 1011 when sliding relative to the first path groove 411, and the sliding connection 423 is used to disengage the material limiting part 421 from the hot air welding station 1011 when sliding relative to the second path groove 412.

[0034] Here, the material limiting part 421 being detached from the hot air welding station 1011 can be understood as the material limiting part 421 not being located at the hot air welding station 1011 and not pressing down on the material 10 at the hot air welding station 1011.

[0035] It should be noted that in this embodiment, both the feed wheel 300 and the pressing control disk 410 are disc structures. The feed wheel 300 and the pressing control disk 410 rotate synchronously together. The first path groove 411 and the second path groove 412 form an annular groove, and the annular groove surrounds the rotation center of the pressing control disk 410.

[0036] It should be noted that, in order to facilitate the placement of material 10 at the hot air welding station 1011, the material flow channel 101 at the hot air welding station 1011 has a V-shaped path structure.

[0037] In addition, it should be noted that, in order to facilitate uniform welding of the material 10 at the hot air welding station 1011, the pressing mechanism also includes a pressure roller 430, which is disposed at the material limiting part 421 and is used to abut against the material 10 at the hot air welding station 1011.

[0038] Meanwhile, the automatic hot air welding device also includes a material rotating wheel 510, which is rotatably mounted on the frame 100. The material rotating wheel 510 is used to abut against the material 10 located at the hot air welding station 1011. In addition, the automatic hot air welding device also includes a first transmission belt 520, a power pulley 530, and a second drive component. The second drive component can also be a motor. The second drive component is connected to the power pulley 530 and is used to drive the power pulley 530 to rotate. The power pulley 530 is rotatably connected to the frame 100. The first transmission belt 520 connects both the power pulley 530 and the material rotating wheel 510.

[0039] With the rotation of the power pulley 530, the first transmission belt 520 drives the material rotating wheel 510 to rotate, and the material rotating wheel 510 drives the material 10 to rotate, making the welding more uniform and improving the welding effect.

[0040] To facilitate the automatic removal of the welded material 10 from the hot air welding station 1011, the automatic hot air welding device also includes a discharge wheel 600 and a second transmission belt 700. The discharge wheel 600 is rotatably connected to the frame 100, and the discharge wheel 600 and the feed wheel 300 are connected by the second transmission belt 700. This allows the discharge wheel 600 and the feed wheel 300 to rotate synchronously. The discharge wheel 600 is used to drive the material 10 located at the hot air welding station 1011 to move along the material flow channel 101 and away from the hot air welding station 1011.

[0041] Specifically, the discharge wheel 600 includes a wheel 610 and a material hook 620. The material hook 620 is disposed on the periphery of the wheel 610. The wheel 610 is rotatably connected to the frame 100. The wheel 610 and the feed wheel 300 are connected by a second transmission belt 700. The material hook 620 is used to drive the material 10 located at the hot air welding station 1011 to move along the material flow channel 101 and away from the hot air welding station 1011. The feed wheel 300 is provided with a material limiting port 301 on its periphery. The material limiting port 301 is used to drive the material 10 to move in the material flow channel 101 so that the material 10 enters the hot air welding station 1011.

[0042] In addition, in order to facilitate the collection of the welded material 10, the frame 100 is provided with a material collection trough 110. The material collection trough 110 is connected to the material flow channel 101. The discharge wheel 600 is used to drive the material 10 located at the hot air welding station 1011 to move along the material flow channel 101 and away from the hot air welding station 1011, so that the material 10 moves to the material collection trough 110.

[0043] Meanwhile, in order to facilitate the continuous automatic feeding of material 10, the frame 100 is also provided with a feeding stacking port 120. The feeding stacking port 120 is connected to the material flow channel 101. Material 10 can be stacked at the feeding stacking port 120. The feeding wheel 300 continuously drives the material 10 into the hot air welding station 1011, realizing automatic feeding and discharging, which can greatly improve efficiency.

[0044] In addition, it should be noted that the relevant parameters of the automatic hot air welding device can be adjusted according to the specific welding situation or welding requirements. For example, the speed of the drive feed wheel 300 of the first drive component can be controlled to reduce the time of the material 10 at the hot air welding station 1011.

[0045] Please refer to Figures 4-12According to the automatic hot air welding device provided in this embodiment, the working principle of the automatic hot air welding device is as follows: like Figure 4 As shown, when the automatic hot air welding device is started, the feed wheel 300 and the discharge wheel 600 of the automatic hot air welding device rotate counterclockwise synchronously, and the material 10 enters the material flow channel 101 from the feed accumulation port 120.

[0046] Please refer to Figure 5 As the feed plate rotates, the sliding connection part 423 of the pressing rod 420 begins to slide in the starting section of the second path groove 412, and the material limiting part 421 of the pressing rod 420 moves away from the hot air welding station 1011.

[0047] Please refer to Figure 6 As the feed tray continues to rotate, the material limit port 301 of the feed tray crosses the horizontal position. At this point, the material limit port 301 no longer limits the material 10, and the material 10 is transferred to the material transfer channel 101 at the hot air welding station 1011 through the material transfer channel 101.

[0048] Please refer to Figure 7 As the feed disc continues to rotate, the sliding connection part 423 of the pressing rod 420 slides at the end of the second path groove 412. The material limiting part 421 of the pressing rod 420 approaches the hot air welding station 1011. When the sliding connection part 423 of the pressing rod 420 slides into the first path groove 411, the material limiting part 421 of the pressing rod 420 can limit the material 10. At the same time, the pressure roller 430 and the material rotating wheel 510 both abut against the material 10. Under the rotation of the material rotating wheel 510, the material 10 rotates. At the same time, the hot air welding machine 200 welds the material 10.

[0049] Please refer to Figure 8 As the feed disc continues to rotate, the discharge wheel 600 also continues to rotate. The material hook 620 of the discharge wheel 600 begins to approach the material 10 at the heat sealing welding station. During this process, the material 10 maintains contact with the pressure wheel 430 and the material rotating wheel 510 and is always rotating.

[0050] Please refer to Figure 9 As the feed plate continues to rotate, the sliding connection part 423 of the pressing rod 420 begins to slide in the starting section of the second path groove 412, and the material limiting part 421 of the pressing rod 420 moves away from the hot air welding station 1011. At this time, the material 10 at the hot air welding station 1011 is in a free state, while the material limiting port 301 of the feed wheel 300 carries new material 10 into the material flow channel 101, preparing for the welding of the next material 10.

[0051] Please refer to Figure 10As the discharge plate continues to rotate, the material hook 620 of the discharge plate catches the material 10, and the material 10 leaves the hot air welding station 1011 and continues to move along the path of the material flow channel 101. At this time, the subsequent material 10 begins to be welded at the hot air welding station 1011.

[0052] Please refer to Figure 11 As the entire automatic hot air welding device operates, the subsequent material 10 is limited by the material limiting part 421 of the pressing rod 420, while the previous material 10 is continuously moved away from the hot air welding station 1011 by the material hook 620.

[0053] Please refer to Figure 12 As the entire automatic hot air welding device continues to operate, the previous material 10 moves to the material collection tank 110 under the drive of the material hook 620, and the remaining subsequent materials 10 repeat the aforementioned steps to realize the process of automatic feeding, automatic rotary welding and material discharge.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic hot air welding device, characterized in that, include: The frame (100) is provided with a material transfer channel (101), and the material transfer channel (101) has a hot air welding station (1011). Hot air welding machine (200), the hot air welding machine (200) is used to weld the material (10) at the hot air welding station (1011); Feeding wheel (300), the feeding wheel (300) is rotatably disposed on the frame (100), the feeding wheel (300) is used to drive the material (10) to move in the material flow channel (101) so that the material (10) enters the hot air welding station (1011). A first driving member is connected to the feed wheel (300) and is used to drive the feed wheel (300) to rotate. as well as The pressing mechanism is connected to the feeding wheel (300). The pressing mechanism has a material limiting part (421). The feeding wheel (300) is used to drive the pressing mechanism to move when rotating, so that the material limiting part (421) of the pressing mechanism periodically moves closer to or further away from the hot air welding station (1011). The material limiting part (421) is used to keep the material (10) continuously confined to the hot air welding station (1011) when it is close to the hot air welding station (1011). The pressing mechanism includes a pressing control disc (410) and a pressing rod (420). The pressing control disc (410) is connected to the feeding wheel (300). The pressing rod (420) has spaced material limiting parts (421), rotating connecting parts (422), and sliding connecting parts (423). The sliding connecting parts (423) are slidably connected to the pressing control disc (410), and the rotating connecting parts (422) are rotatably connected to the frame (100). The feed wheel (300) is used to drive the pressing control disc (410) to move when it rotates, so that the material limiting part (421) of the pressing mechanism periodically moves closer to or further away from the hot air welding station (1011). The pressing control plate (410) is provided with a first path groove (411) and a second path groove (412) connected end to end in sequence, and the sliding connection part (423) is slidably connected to the first path groove (411) and the second path groove (412). The sliding connection (423) is used to ensure that the material limiting part (421) remains in the hot air welding station (1011) when sliding relative to the first path groove (411), and the sliding connection (423) is used to disengage the material limiting part (421) from the hot air welding station (1011) when sliding relative to the second path groove (412). The automatic hot air welding device also includes a discharge wheel (600) and a second transmission belt (700). The discharge wheel (600) is rotatably connected to the frame (100). The discharge wheel (600) and the feed wheel (300) are connected by the second transmission belt (700). The discharge wheel (600) is used to drive the material (10) located at the hot air welding station (1011) to move along the material flow channel (101) and away from the hot air welding station (1011). The discharge wheel (600) includes a wheel disc (610) and a material hook (620). The material hook (620) is disposed on the periphery of the wheel disc (610). The wheel disc (610) is rotatably connected to the frame (100). The wheel disc (610) and the feed wheel (300) are connected by the second transmission belt (700). The material hook (620) is used to drive the material (10) located at the hot air welding station (1011) to move along the material flow channel (101) and away from the hot air welding station (1011). The feed wheel (300) is provided with a material limiting port (301) around its periphery. The material limiting port (301) is used to drive the material (10) to move in the material flow channel (101) so that the material (10) enters the hot air welding station (1011).

2. The automatic hot air welding device according to claim 1, characterized in that, The pressing mechanism also includes a pressure roller (430), which is disposed on the material limiting part (421) and is used to abut against the material (10) located at the hot air welding station (1011).

3. The automatic hot air welding device according to claim 1, characterized in that, The automatic hot air welding device also includes a material rotating wheel (510), which is rotatably mounted on the frame (100) and is used to abut the material (10) located at the hot air welding station (1011).

4. The automatic hot air welding device according to claim 3, characterized in that, The automatic hot air welding device further includes a first transmission belt (520), a power pulley (530), and a second driving member. The second driving member is connected to the power pulley (530) and is used to drive the power pulley (530) to rotate. The power pulley (530) is rotatably connected to the frame (100). The first transmission belt (520) connects the power pulley (530) and the material rotating wheel (510) at the same time.

5. The automatic hot air welding device according to claim 1, characterized in that, The frame (100) is provided with a material collection trough (110), and the material collection trough (110) is connected to the material flow channel (101); The discharge wheel (600) is used to drive the material (10) located at the hot air welding station (1011) to move along the material flow channel (101) and away from the hot air welding station (1011), so that the material (10) moves to the material collection tank (110).

6. The automatic hot air welding device according to claim 1, characterized in that, The frame (100) is also provided with a material inlet (120), which is connected to the material flow channel (101).

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