Heat shrink tube production device

Abstract

The present invention discloses a heat shrink tubing production device, comprising a terminal feeding mechanism, an outer tube feeding mechanism, a clamping mechanism, an assembly mechanism, a forming mechanism, and a conveying mechanism. By separately providing the terminal feeding mechanism, the outer tube feeding mechanism, the clamping mechanism, the assembly mechanism, the forming mechanism, and the conveying mechanism, the heat shrink tubing production process is fully automated, and the assembly process is precisely controllable.

Description

Technical Field

[0001] The invention relates to the field of heat shrink tube production and processing, and in particular to a heat shrink tube production device. Background Art

[0002] Currently, waterproof heat-shrinkable intermediate connectors are produced by feeding the tinned copper tube and heat-shrinkable outer tube directly to the ejector pin position. Once at the forming position, the heat-shrinkable outer tube is shrunk using an alcohol lamp or hot air blower. This method has the following problems: the alcohol lamp's flame is uncontrollable, resulting in inconsistent shrinkage quality; and the hot air blower is constantly heating during shrinkage, making it susceptible to damage and consuming a lot of energy.

[0003] Based on this, Chinese invention patent publication number CN109571923A discloses a semi-automatic end-molding and shrinking device for heat shrink tubing. This device uses a hot air gun to shape the tubing, allowing for adjustable temperature. However, this device still suffers from issues such as excessive size and low processing efficiency.

[0004] Therefore, how to provide a fully automatic heat shrink tube production device has become a technical problem that urgently needs to be solved in the industry. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a heat shrink tube production device, which aims to provide a solution to the problem that the existing solution cannot achieve full automation of heat shrink tube processing and production.

[0006] Technical solution: A heat shrink tube production device, comprising:

[0007] A terminal feeding mechanism for conveying terminals;

[0008] An outer tube feeding mechanism for conveying outer tubes;

[0009] A clamping mechanism provided between the terminal feeding mechanism and the outer tube feeding mechanism, comprising a movable clamping portion, one end of the clamping portion being used to clamp the terminal, and the other end being used to clamp the outer tube;

[0010] An assembly mechanism includes at least one ejector pin for assembling the terminal on the clamping portion and pushing it into the outer tube on the clamping portion;

[0011] The forming mechanism is used to blow out hot air to shrink the outer tube and wrap the terminal tightly;

[0012] A conveying mechanism, used to convey the assembled workpiece to the forming mechanism;

[0013] The clamping mechanism also includes a first driving component, which drives the clamping part to move between a first position and a second position. When the clamping part is in the first position, the terminal feeding mechanism and the outer tube feeding mechanism feed the clamping part. When the clamping part is in the second position, the assembly mechanism assembles the terminal into the outer tube held by the clamping part.

[0014] Furthermore, the first driving assembly includes a rotating arm and a power assembly for driving the rotating arm to rotate, and the clamping portion is detachably connected to the rotating arm.

[0015] Furthermore, the power assembly is drivingly connected to the middle portion of the rotating arm, and the number of the clamping parts is at least two, which are respectively provided at both ends of the rotating arm.

[0016] Furthermore, the clamping part includes an outer clamping part and an inner clamping part that are nested, one end of the outer clamping part is provided with a terminal accommodating cavity for clamping the terminal, and the outer clamping part clamps and releases the terminal through a second drive component, and the end of the inner clamping part away from the terminal accommodating cavity is provided with an outer tube accommodating cavity for clamping the outer tube, and the inner clamping part clamps and releases the outer tube through a third drive component.

[0017] Furthermore, the conveying mechanism includes a turntable that can rotate around its own axis, and the turntable includes two turntables that are arranged relatively to each other and move synchronously. The turntable is provided with several stations for accommodating assembled workpieces. When one of the stations moves to the clamping portion located in the second position, the station is set as a receiving station for receiving the assembled workpiece, and the assembly mechanism is arranged next to the receiving station.

[0018] Furthermore, the assembly mechanism includes two ejectors and a fourth drive assembly that drives the two ejectors to perform linear reciprocating motion in opposite directions. The two ejectors are arranged on both sides of the receiving station, respectively corresponding to the two ends of the clamping part when it is in the second position.

[0019] Furthermore, each of the workstations includes an outer tube base and a terminal base, which are respectively arranged on the two turntables and corresponding to each other. The outer tube base is provided with an outer tube rotating shaft that can extend toward the terminal base, and the terminal base is provided with a terminal rotating shaft that can extend toward the outer tube base. When the workstation moves to the receiving station, the outer tube rotating shaft and the terminal rotating shaft are respectively ejected by the ejector and the terminal is inserted into the outer tube.

[0020] Furthermore, the assembly mechanism further includes a sixth driving component for driving the terminal shaft to penetrate the terminal. When the terminal shaft penetrates the terminal, the outer clamping portion releases the terminal.

[0021] Furthermore, in addition to the receiving station, at least one of the terminal rotating shaft and the outer tube rotating shaft of at least one station is driven and connected to a fifth driving assembly, and the fifth driving assembly drives the terminal rotating shaft and / or the outer tube rotating shaft to rotate.

[0022] Furthermore, a reset mechanism for resetting the terminal shaft and the outer tube shaft is provided beside the station before the receiving station, and the reset mechanism is located beside the station after the forming mechanism.

[0023] Furthermore, there is at least one forming mechanism, which is arranged on the outer edge of the turntable and corresponds to the workstation, and is arranged away from the receiving workstation.

[0024] Furthermore, the forming mechanism includes a heating block and a heating coil arranged outside the heating block. An air flow channel is provided inside the heating block. An air outlet is provided at one end of the air flow channel and an air inlet is provided at the other end. The air outlet is provided corresponding to the work station, and the air inlet is connected to an external air supply mechanism.

[0025] Furthermore, there are two forming mechanisms, both of which are arranged toward the center of the turntable and away from the receiving station.

[0026] Furthermore, the terminal feeding mechanism includes: a first vibrating feeding tray and a first vibrating feeding channel connected in sequence, and a first pushing component for pushing the terminal into the clamping portion is provided at the tail end of the first vibrating feeding channel.

[0027] Furthermore, the outer tube feeding mechanism includes: a second vibrating feeding plate and a second vibrating feeding channel connected in sequence, and the tail end of the second vibrating feeding channel is provided with a second pushing component for pushing the outer tube into the clamping part.

[0028] Beneficial effects: The heat shrink tube production device of the present invention realizes the full automation of heat shrink tube processing and production by separately arranging a terminal feeding mechanism, an outer tube feeding mechanism, a clamping mechanism, an assembly mechanism, a molding mechanism and a conveying mechanism, and the assembly process is precisely controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attachment Figure 1 This is a schematic cross-sectional view of a workpiece processed by the heat shrink tube production device of the present invention;

[0030] Attachment Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of a heat shrink tube production device of the present invention;

[0031] Attachment Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the clamping mechanism of the heat shrink tube production device shown;

[0032] Attachment Figure 4for Figure 3 A partially cutaway perspective structural diagram of a clamping portion of the clamping mechanism shown;

[0033] Attachment Figure 5 for Figure 4 Another perspective structural diagram of the clamping portion shown;

[0034] Attachment Figure 6 for Figure 2 A schematic diagram of the three-dimensional structure of the conveying mechanism portion of the heat shrink tube production device shown;

[0035] Attachment Figure 7 for Figure 2 The schematic diagram of the cross-sectional structure of the forming mechanism of the heat shrink tube production device shown;

[0036] Attachment Figure 8 for Figure 2 A schematic diagram of the three-dimensional structure of the outer tube feeding mechanism of the heat shrink tube production device shown;

[0037] Attachment Figure 9 for Figure 2 The diagram shows a partial three-dimensional structure diagram of the terminal feeding mechanism of the heat shrink tube production device. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] It should be noted that the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The workpiece obtained by the heat shrink tube production device of the present invention is shown in FIG. Figure 1 As shown, it includes a terminal 92 and an outer tube 91 sleeved outside the terminal 92.

[0041] See also Figures 2 to 9One embodiment of the heat shrink tubing production apparatus of the present invention is shown, comprising: a terminal feeding mechanism 6, an outer tube feeding mechanism 1, an assembly mechanism 3, a molding mechanism 4, a conveying mechanism 31, and a clamping mechanism 2. The terminal feeding mechanism 6 is used to convey terminals, while the outer tube feeding mechanism 1 is used to convey outer tubes. The clamping mechanism 2 is disposed between the terminal feeding mechanism 6 and the outer tube feeding mechanism 1 and includes a movable clamping portion 21, one end of which is used to clamp the terminal and the other end of which is used to clamp the outer tube.

[0042] The assembly mechanism 3 includes at least one ejector pin 321 for inserting the terminal assembly on the clamping portion 21 into the outer tube on the clamping portion 21. The forming mechanism 4 is used to blow hot air to shrink the outer tube to tightly wrap the terminal, and the conveying mechanism 31 is used to convey the assembled workpiece to the forming mechanism 4.

[0043] The clamping mechanism 2 also includes a first drive component 22, which drives the clamping part 21 to drive the clamping part 21 to move between a first position and a second position. When the clamping part 21 is in the first position, the terminal feeding mechanism 6 and the outer tube feeding mechanism 1 feed the clamping part 21. When the clamping part 21 is in the second position, the assembly mechanism 3 assembles the terminal into the outer tube on the clamping part 21.

[0044] By separately arranging the terminal feeding mechanism 6, the outer tube feeding mechanism 1, the clamping mechanism 2, the assembling mechanism 3, the forming mechanism 4 and the conveying mechanism 31, the full automation of the heat shrink tube processing and production is achieved, and the assembly process is precisely controllable.

[0045] In this embodiment, the first drive assembly 22 includes a rotating arm 221 and a power assembly 222 for driving the rotating arm 221. The clamping portion 21 is detachably connected to the rotating arm 221. This achieves modular assembly of the clamping portion 21. Production personnel can select different clamping portions 21 based on the heat shrink tubing to be processed, thereby enabling rapid replacement of processing types and expanding the processing application scenarios of the equipment.

[0046] The power assembly 222 is connected to the middle portion of the rotating arm 221. The two clamping parts 21 are respectively provided at both ends of the rotating arm 221. This allows the clamping parts 21 to quickly switch between the first position and the second position. Preferably, the power assembly 222 is a rotary cylinder, which has the characteristics of fast response and high safety performance.

[0047] As a further optimization of this embodiment, the power assembly 222 is driven and connected to the middle portion of the rotating arm 221. The number of the clamping portions 21 is at least two, respectively provided at both ends of the rotating arm 221. The number of the clamping portions 21 can be increased or decreased as needed by simply increasing or decreasing the number of rotating arms 221 accordingly.

[0048] In this embodiment, the clamping portion 21 includes an outer clamping portion 211 and an inner clamping portion 212, each nested. A terminal accommodating cavity 213 for clamping a terminal is provided at one end of the outer clamping portion 211. The outer clamping portion 211 clamps and releases the terminal via a second drive assembly 2111. An outer tube accommodating cavity 214 for clamping an outer tube is provided at one end of the inner clamping portion 212, away from the terminal accommodating cavity 213. The inner clamping portion 212 clamps and releases the outer tube via a third drive assembly 2121. Preferably, both the second drive assembly 2111 and the third drive assembly 2121 are cylinders. In this manner, the clamping and release of two components to be assembled are achieved within the same clamping portion 21 structure, avoiding the use of multiple fixtures, reducing the number of steps, and improving production efficiency.

[0049] Specifically, the conveying mechanism 31 includes a turntable that can rotate about its own axis. The turntable includes two turntables that are arranged relative to each other and move synchronously. The turntable is provided with a plurality of workstations 311 for accommodating assembled workpieces. When one of the workstations 311 moves to the clamping portion 21 in the second position, the workstation 311 is configured as a receiving workstation 312 for receiving the assembled workpiece. The assembly mechanism 3 is located next to the receiving workstation 312. Compared to a linear conveying mechanism, the turntable configuration can significantly reduce the overall device footprint and lower production and processing costs. At the same time, by setting up the receiving workstation 312, the workstations 311 on the turntable are organized and categorized, which can improve management efficiency.

[0050] In this embodiment, the assembly mechanism 3 includes two ejector pins 321 and a fourth drive assembly 322 that drives each of the two ejector pins 321 to perform linear reciprocating motion in opposing directions. Preferably, the fourth drive assembly 322 is a pneumatic cylinder. The two ejector pins 321 are positioned on either side of the receiving station 312, corresponding to the two ends of the clamping portion 21 when in the second position. The placement of the ejector pins 321 corresponding to the clamping portion 21 allows for simultaneous assembly of the terminal and outer tube in the clamped state, resulting in improved efficiency.

[0051] Each of the workstations 311 includes an outer tube base and a terminal base, which are respectively arranged on the two turntables and corresponding to each other. The outer tube base is provided with an outer tube rotating shaft 33 that can be extended toward the terminal base, and the terminal base is provided with a terminal rotating shaft 34 that can be extended toward the outer tube base. When the workstation 311 moves to the receiving workstation 312, the outer tube rotating shaft 33 and the terminal rotating shaft 34 are respectively ejected by the ejector pin 321 and the terminal is inserted into the outer tube. In addition to the receiving station 312, at least one of the terminal shaft 34 and the outer tube shaft 33 of at least one station 311 is driven and connected to a fifth drive component, and the fifth drive component drives the terminal shaft 34 and / or the outer tube shaft 33 to rotate. In this embodiment, the fifth drive component includes a rotatable rubber wheel 35, and a transmission rubber wheel is correspondingly provided on the outer tube shaft 33 and / or the terminal shaft 34. The rubber wheel drives the terminal shaft 34 and / or the outer tube shaft 33 to rotate through the transmission rubber wheel on the outer tube shaft 33 and / or the terminal shaft 34.

[0052] Separating the outer tube shaft 33 and the terminal shaft 34 used to eject the outer tube and terminal from the ejector pin 321 ensures the assembly effect while simultaneously creating a rotating state for the assembled workpiece, avoiding the need for a separate rotation drive assembly and improving work efficiency. Preferably, to ensure work accuracy during assembly, the assembly mechanism 32 also includes a sixth drive assembly 36 for driving the ejector pin to penetrate the terminal. The sixth drive assembly 36 drives the fourth drive assembly 322 and the ejector pin 321 to move, thereby ejecting the terminal shaft 34 and inserting it into the terminal. At this time, the outer clamping portion 211 releases the terminal, and the fourth drive assembly 322 then drives the ejector pin to eject the terminal shaft 34 and the outer tube shaft 33, respectively, pushing the terminal into the outer tube.

[0053] In this embodiment, a reset mechanism 5 for resetting the terminal shaft 34 and the outer tube shaft 33 is further provided at the station 311 located before the receiving station 312. The reset mechanism 5 is located at the station 311 after the forming mechanism 4. Specifically, the reset mechanism 5 includes mechanical claws 51 for grasping the terminal shaft and the outer tube shaft 33, respectively. The mechanical claws 51 are driven by a cylinder 52. When a workpiece is transported to the reset mechanism 5 on the turntable, the mechanical claws 51, driven by the cylinder 52, grasp and reset the terminal shaft and the outer tube shaft 33, respectively. The workpiece loses the support of the outer tube shaft 33 and falls from the device.

[0054] In this embodiment, there are two forming mechanisms 4, both of which are arranged toward the center of the turntable and away from the receiving station 312, and are arranged on the outer edge of the turntable and correspond to the two stations 311 after the receiving station 312, thereby avoiding the receiving station 312. In other embodiments, the forming mechanism 4 can also be set to one or three, depending on the spatial layout and the required processing efficiency. Such structural changes still fall within the scope of protection of the present invention. Specifically, the terminal shaft and the outer tube shaft 33 of the station 311 corresponding to each forming mechanism 4 are connected to a fifth drive assembly through a rubber wheel 35 to facilitate the uniform heating and forming of the workpiece during rotation during molding.

[0055] Specifically, the forming mechanism 4 includes a heating block 41 and a heating coil 42 arranged outside the heating block 41. The heating block 41 is provided with an air flow channel 40. The heating coil 42 is arranged in the air flow channel 40. One end of the air flow channel 40 is provided with an air outlet 43 and the other end is provided with an air inlet 45. The air outlet 43 is provided corresponding to the station 311, and the air inlet 45 is connected to the external air supply mechanism, so that the hot air blown out corresponds to the terminal part, so that the part of the outer tube corresponding to the terminal is contracted and tightly wrapped to form the terminal. Figure 1 The workpiece shown. Preferably, heating block 41 is a copper block, which has excellent thermal conductivity. By placing heating block 41 within forming mechanism 4, the temperature rise can be more uniform, preventing overheating and damage to the outer tube. To ensure that heat is not lost during the heating process, an insulating layer 44 is provided surrounding the heating coil.

[0056] The terminal feeding mechanism 6 includes: a first vibrating feeding tray 61 and a first vibrating feeding channel 62 connected in sequence. The first vibrating feeding channel 62 has a first ejection assembly 63 at the rear end thereof for ejecting the terminal into the clamping portion 21. The outer tube feeding mechanism 1 includes: a second vibrating feeding tray 11 and a second vibrating feeding channel 12 connected in sequence. The second vibrating feeding channel has a second ejection assembly 13 at the rear end thereof for ejecting the outer tube into the clamping portion 21. The first ejection assembly and the second ejection assembly are respectively arranged on both sides of the clamping mechanism 2, and are respectively arranged on both sides of the clamping portion 21 in the first position.

[0057] When the heat shrink tubing production device of this embodiment is in operation, the terminal and outer tube are supplied by the terminal feeding mechanism 6 and the outer tube feeding mechanism 1, respectively, and are respectively pushed into the terminal accommodating cavity 213 and the outer tube accommodating cavity 214 of the clamping portion 21 when it is in the first position through the first and second push-up assemblies. At this time, the outer clamping portion 211 and the inner clamping portion 212 respectively clamp the terminal and the outer tube. The clamping portion 21 is driven by the rotating arm to move to the second position. The ejector pin 321 begins to eject, driving the outer tube rotating shaft 33 and the terminal rotating shaft 34 to eject, respectively. The outer clamping portion 211 and the inner clamping portion 212 are released in sequence, so that the terminal is pushed into the outer tube. At this time, the clamping portion 21 continues to move to the first position to prepare to receive the next terminal and outer tube. The assembled workpiece moves from the receiving station 312 to the next station 311 to receive the hot blow molding by the molding mechanism 4. It rotates under the action of the fifth drive assembly, and the workpiece is evenly heated. After the forming is completed, the reset mechanism 5 is activated to pull out the terminal shaft 34 and the outer tube shaft 33 respectively, and the workpiece falls down, ready to enter the next process.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A heat shrink tube production device, characterized in that: include: A terminal feeding mechanism for conveying terminals; An outer tube feeding mechanism for conveying outer tubes; A clamping mechanism provided between the terminal feeding mechanism and the outer tube feeding mechanism, comprising a movable clamping portion, one end of the clamping portion being used to clamp the terminal, and the other end being used to clamp the outer tube; An assembly mechanism includes at least one ejector pin for assembling the terminal on the clamping portion and pushing it into the outer tube on the clamping portion; The forming mechanism is used to blow out hot air to shrink the outer tube and wrap the terminal tightly; A conveying mechanism, used to convey the assembled workpiece to the forming mechanism; The clamping mechanism further includes a first drive assembly, the first drive assembly drivingly connected to the clamping portion, for driving the clamping portion to move between a first position and a second position, when the clamping portion is in the first position, the terminal feeding mechanism and the outer tube feeding mechanism feed the clamping portion, and when the clamping portion is in the second position, the assembly mechanism assembles the terminal into the outer tube held by the clamping portion; The clamping portion includes an outer clamping portion and an inner clamping portion that are nested together. One end of the outer clamping portion is provided with a terminal accommodating cavity for clamping the terminal. The outer clamping portion clamps and releases the terminal through a second drive assembly. An end of the inner clamping portion away from the terminal accommodating cavity is provided with an outer tube accommodating cavity for clamping the outer tube. The inner clamping portion clamps and releases the outer tube through a third drive assembly. The conveying mechanism includes a turntable that can rotate around its own axis, and the turntable includes two turntables that are arranged relative to each other and move synchronously. The turntable is provided with a plurality of stations for accommodating assembled workpieces. When one of the stations moves to the clamping portion located at the second position, the station is set as a receiving station for receiving the assembled workpiece. The assembly mechanism is provided next to the receiving station. The assembly mechanism includes two ejectors and a fourth drive assembly that drives the two ejectors to perform linear reciprocating motion in opposite directions, wherein the two ejectors are respectively arranged on both sides of the receiving station, corresponding to the two ends of the clamping portion when the clamping portion is in the second position; Each of the workstations includes an outer tube base and a terminal base, which are respectively arranged on the two turntables and corresponding to each other. The outer tube base is provided with an outer tube rotating shaft that can extend toward the terminal base, and the terminal base is provided with a terminal rotating shaft that can extend toward the outer tube base. When the workstation moves to the receiving station, the outer tube rotating shaft and the terminal rotating shaft are respectively ejected by the ejector and the terminal is inserted into the outer tube.

2. The heat shrink tube production device according to claim 1, characterized in that: The first driving assembly includes a rotating arm and a power assembly for driving the rotating arm to rotate, and the clamping portion is detachably connected to the rotating arm.

3. The heat shrink tube production device according to claim 2, characterized in that: The power assembly is driven and connected to the middle part of the rotating arm, and there are at least two clamping parts, which are respectively arranged at both ends of the rotating arm.

4. The heat shrink tube production device according to claim 1, characterized in that: The assembly mechanism further includes a sixth driving component for driving the terminal shaft to penetrate the terminal. When the terminal shaft penetrates the terminal, the outer clamping portion releases the terminal.

5. The heat shrink tube production device according to claim 1, characterized in that: In addition to the receiving station, at least one of the terminal rotating shaft and the outer tube rotating shaft of at least one station is driven and connected to a fifth driving assembly, and the fifth driving assembly drives the terminal rotating shaft and / or the outer tube rotating shaft to rotate.

6. The heat shrink tube production device according to claim 1, characterized in that: A reset mechanism for resetting the terminal shaft and the outer tube shaft is provided beside a station before the receiving station, and the reset mechanism is located beside a station after the forming mechanism.

7. The heat shrink tube production device according to claim 1, characterized in that: There is at least one forming mechanism, which is arranged on the outer edge of the turntable and corresponds to the workstation and is arranged away from the receiving workstation.

8. The heat shrink tube production device according to claim 7, characterized in that: The forming mechanism includes a heating block and a heating coil arranged outside the heating block. An air flow channel is provided inside the heating block. An air outlet is provided at one end of the air flow channel and an air inlet is provided at the other end. The air outlet is arranged corresponding to the work station, and the air inlet is connected to an external air supply mechanism.

9. The heat shrink tube production device according to claim 7, characterized in that: There are two forming mechanisms, both of which are arranged toward the center of the turntable and away from the receiving station.

10. The heat shrink tube production device according to claim 1, characterized in that: The terminal feeding mechanism comprises: a first vibrating feeding tray and a first vibrating feeding channel connected in sequence, wherein the tail end of the first vibrating feeding channel is provided with a first pushing component for pushing the terminal into the clamping portion.

11. The heat shrink tube production device according to claim 1, characterized in that: The outer tube feeding mechanism includes: a second vibrating feeding plate and a second vibrating feeding channel connected in sequence, and a second pushing component for pushing the outer tube into the clamping part is provided at the tail end of the second vibrating feeding channel.

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