Power line plugging power-on test equipment

Abstract

The invention relates to the technical field of plug-in power-on testing, in particular to a power line plug-in power-on testing device which comprises a testing platform and further comprises a testing supporting plate, the testing supporting plate is fixedly installed on the testing platform, and a power-on control disc is fixedly installed on the testing supporting plate. Three socket holes and three discharging telescopic holes are distributed in the power-on control disc. The three socket holes and the three discharging telescopic holes are arranged at intervals. The test control mechanism is respectively connected with the test platform and the test support plate, and the test control mechanism comprises an unloading control assembly and a feeding assembly; according to the power line plug-in power-on test equipment, a plug of a power line can be conveniently subjected to a plug-in power-on test, and the surface of the plug can be prevented from being damaged due to the action of clamping force in the plug pulling-out process.

Description

Technical Field

[0001] The invention relates to the technical field of plug-in power-on testing, in particular to a power line plug-in power-on testing device. Background Art

[0002] Power cord plug-in power-on test equipment plays a vital role in the safety and quality control of electrical products. With the development of science and technology and the improvement of consumer requirements for product quality and safety, the technology of these test equipment has also experienced significant progress. In the past, traditional testing methods mainly relied on manual operation, which was not only inefficient but also prone to unqualified products due to operating errors. However, with the application of automation technology, a new generation of power cord test equipment has been able to achieve fast and accurate automatic detection, significantly improving production efficiency and test reliability. Modern power cord test equipment can not only perform basic power-on tests, but also integrate multiple detection functions such as insulation, voltage and leakage current to ensure that the comprehensive performance of the power cord meets the standards. In addition, considering that different countries and regions have different specifications for power plugs, advanced test equipment design takes into account international standards and can meet the needs of the global market. In practical applications, the production of home appliances such as air conditioners and televisions cannot be separated from the use of power cord plug-in power-on test equipment, which is directly related to product safety and the brand image of the company. By adopting such efficient testing equipment, companies can not only reduce labor costs, but also improve product quality, thereby gaining an advantage in the fierce market competition.

[0003] In the existing power cord plug-in power-on test equipment, in order to ensure the accuracy of the test during use, the plug of the power cord is usually tightly plugged into the test equipment. In this plug-in method, during multiple tests, it is not only inconvenient to plug and unplug, but the surface of the plug may be damaged during the plug-in process, and even the power cord plug may be scrapped, which is inconvenient to use. Therefore, in view of the above situation, it is urgent to develop a power cord plug-in power-on test equipment to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a power cord plug-in power-on test device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A power cord plug-in power-on test device comprises a test platform and also comprises: A test support plate, the test support plate is fixedly mounted on the test platform, and a power control disc is also fixedly mounted on the test support plate, and three socket holes and three unloading telescopic holes are distributed on the power control disc; The three socket holes are spaced apart from the three discharge telescopic holes respectively; and a test control mechanism, the test control mechanism is connected to the test platform and the test support plate respectively, wherein the test control mechanism includes a discharge control component and a feeding component; The feeding assembly is connected to the test platform and the test support plate respectively and is arranged opposite to the socket hole. The unloading control assembly is connected to the test support plate and is slidably connected to the unloading telescopic hole. The unloading control assembly is also electrically connected to the feeding assembly.

[0006] As a further solution of the present invention: it also includes: an emergency protection cover, which is fixedly connected to the test platform and the test support plate respectively; And a tempered glass surface, the number of the tempered glass surfaces is multiple, and the multiple tempered glass surfaces are all located on the emergency protective cover.

[0007] As a further solution of the present invention: it also includes: a monitoring system, the monitoring system is fixedly installed on the emergency protection cover, and the monitoring system is also electrically connected to the test control mechanism; And a wiring box, the wiring box is fixedly installed on the test support plate, and the number of the wiring boxes is three, the three wiring boxes are respectively arranged opposite to the three socket holes, and each of the wiring boxes is provided with a detachable cover.

[0008] As a further solution of the present invention: the discharge control assembly comprises: A test equipment box, the test equipment box is fixedly mounted on the test support plate; A discharge device, wherein the discharge device is fixedly connected to the test device box, and a movable circular plate is fixedly installed on the output end of the discharge device, and the movable circular plate is located in the test device box; A plurality of card-mounted sliders, the number of which is multiple, the multiple card-mounted sliders are evenly distributed on the movable circular plate and are slidably connected to the inner wall of the test equipment box; And a top-unloading unit, wherein the top-unloading unit is connected with the movable circular plate and is slidably connected with the unloading telescopic hole.

[0009] As a further solution of the present invention: the lifting and unloading unit comprises: Detection support rods, the number of the detection support rods is three, the three detection support rods are all fixedly connected to the movable circular plate, and the three detection support rods are respectively arranged opposite to the three unloading telescopic holes; A buffer sleeve, which is sleeved on the detection support rod and slidably connected to the detection support rod, and a leakage detection head is also arranged on one end of the buffer sleeve; and a reset spring, wherein the reset spring is located in the buffer sleeve, and two ends of the reset spring are respectively fixedly connected to the detection support rod and the buffer sleeve.

[0010] As a further solution of the present invention: the feeding assembly comprises: A support plate, the support plate is fixedly mounted on the test platform; A feeding device, wherein the feeding device is fixedly connected to the support plate, and a movable bracket is fixedly installed on the output end of the feeding device; A guide feeding slide bar, wherein the guide feeding slide bar is fixedly connected to the support plate and the test support plate respectively, wherein the number of the guide feeding slide bars is three, and the three guide feeding slide bars are all slidably connected to the movable bracket; And a positioning control unit, wherein the positioning control unit is connected to the mobile bracket.

[0011] As a further solution of the present invention: the positioning control unit includes: A special-shaped clamping seat, wherein the special-shaped clamping seat is fixedly connected to the movable bracket; A positioning receiving support, wherein the number of the positioning receiving supports is multiple, and the multiple positioning receiving supports are fixedly mounted on the special-shaped clamping seat, and an air pump is mounted on each of the positioning receiving supports; And a fastening airbag, which is located in the special-shaped clamping seat and is connected with the air pump through a channel arranged on the special-shaped clamping seat.

[0012] As a further solution of the present invention: it also includes: a receiving groove, the receiving groove is opened in the middle of the power-on control disc; And a positioning detection member, which is fixedly installed in the accommodating groove and arranged opposite to the feeding assembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the power cord is plugged in for power-on testing, first, the plug of the power cord to be tested can be placed at the feeding assembly (three plugs of the power cord), and a mechanical conveying method can be used, such as an assembly line, so that a batch of power cords to be tested are conveyed to the feeding assembly in turn (the plugs of the power cords are conveyed to the feeding assembly for clamping), or manual placement can be used. The corresponding existing equipment can be configured according to actual needs, and no further details are given here. Then, the feeding assembly will push the plug of the power cord to move in the direction of the power-on control disc, and as the power cord plug enters the emergency protective cover, the emergency protective cover can be made of fireproof material and can be provided with fire extinguishing equipment, such as a miniature fire extinguisher, so as to protect the power cord during the test. In addition, the tempered glass surface provided on the emergency protective cover can facilitate the staff to intuitively observe the plug-in situation and the test situation. As the power cord plug continues to move, it will eventually be plugged into the socket hole on the power-on control disc, wherein the metal sheet used for power supply in the socket hole is connected to the external power supply through the wiring box on the side of the power-on control disc. The power cord is connected to the feeding assembly (the conducting cable is arranged on the side of the power-on control disc to avoid interference with the subsequent unloading process, and the wiring condition can be inspected and repaired through the detachable cover). At this time, the power-on condition of the power cord can be detected (this process can be detected by the existing technology). After the detection is completed, the unloading control assembly is started, and a thrust is generated through the three unloading telescopic holes. Under the joint action of the three thrusts, the power cord plug plugged in the socket hole can be pushed out horizontally to avoid damage to the power cord plug or the socket hole under the action of the tilting force, and the tested power cord plug can be smoothly entered into the feeding assembly (the unloading control assembly is electrically connected to the feeding assembly. When the unloading control assembly pushes the power cord plug out, the feeding assembly performs a corresponding material receiving action to avoid the power cord falling on the test platform). Finally, the power cord after the test is pulled out of the outside of the emergency protective cover, and the next power cord is tested. The operation is simple, which can facilitate the plug-in and plug-in power-on test of the power cord, and can avoid damage to the surface of the plug due to the clamping force during the unplugging process, which provides convenience for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the front side of the power cord plugged into the power-on test device in an embodiment of the present invention.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the power cord plugged into the rear side of the power-on test device in an embodiment of the present invention.

[0016] Figure 3 Schematic diagram of the three-dimensional structure of the air pump in an embodiment of the present invention.

[0017] Figure 4It is a schematic diagram of the three-dimensional structure of the fastening airbag distribution in an embodiment of the present invention.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the test support plate in an embodiment of the present invention.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the distribution of the unloading telescopic holes in an embodiment of the present invention.

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning detection component in an embodiment of the present invention.

[0021] Figure 8 It is a schematic diagram of the three-dimensional structure of the test equipment box in an embodiment of the present invention.

[0022] Fig. 9 It is a schematic diagram of the three-dimensional structure for detecting the distribution of support rods in an embodiment of the present invention.

[0023] Fig.10 It is a schematic cross-sectional structural diagram of the buffer sleeve in an embodiment of the present invention.

[0024] In the figure: 1-test platform, 2-emergency protective cover, 3-monitoring system, 4-tempered glass surface, 5-guide feeding slide bar, 6-support plate, 7-feeding equipment, 8-unloading equipment, 9-test equipment box, 10-movable bracket, 11-special-shaped clamping seat, 12-air pump, 13-positioning receiving support, 14-fastening airbag, 15-test support plate, 16-power control disc, 17-wiring box, 18-detachable cover, 19-socket hole, 20-unloading telescopic hole, 21-accommodating groove, 22-positioning detection part, 23-movable circular plate, 24-card-mounted slider, 25-detection support rod, 26-buffer sleeve, 27-leakage detection head, 28-reset spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0027] See also Figure 1-Figure 10 , a power cord plug-in power-on test device provided by an embodiment of the present invention includes a test platform 1, and also includes: A test support plate 15, the test support plate 15 is fixedly mounted on the test platform 1, and a power control disc 16 is also fixedly mounted on the test support plate 15, and three socket holes 19 and three unloading telescopic holes 20 are distributed on the power control disc 16; The three socket holes 19 are spaced apart from the three discharge telescopic holes 20 respectively; and a test control mechanism, the test control mechanism is connected to the test platform 1 and the test support plate 15 respectively, wherein the test control mechanism includes a discharge control component and a feeding component; The feeding assembly is connected to the test platform 1 and the test support plate 15 respectively, and is arranged opposite to the socket hole 19. The unloading control assembly is connected to the test support plate 15 and is slidably connected to the unloading telescopic hole 20, and the unloading control assembly is also electrically connected to the feeding assembly.

[0028] It also includes: an emergency protection cover 2, which is fixedly connected to the test platform 1 and the test support plate 15 respectively; And a tempered glass surface 4 , wherein there are multiple tempered glass surfaces 4 , and the multiple tempered glass surfaces 4 are all located on the emergency protective cover 2 .

[0029] It also includes: a monitoring system 3, which is fixedly mounted on the emergency protection cover 2, and the monitoring system 3 is also electrically connected to the test control mechanism; And a wiring box 17, the wiring box 17 is fixedly installed on the test support plate 15, and the number of the wiring boxes 17 is three, the three wiring boxes 17 are respectively arranged opposite to the three socket holes 19, and each of the wiring boxes 17 is provided with a detachable cover 18.

[0030] When the power cord is plugged in for power-on testing, first, the plug of the power cord to be tested can be placed at the feeding assembly (three plugs of the power cord), and a mechanical conveying method can be used, such as an assembly line, so that a batch of power cords to be tested are conveyed to the feeding assembly in turn (the plugs of the power cords are conveyed to the feeding assembly for clamping), or manual placement can be used. The corresponding existing equipment can be configured according to actual needs, and no further details will be given here. Then, the feeding assembly will push the plug of the power cord to move in the direction of the power-on control disc 16, and as The power cord plug enters the emergency protection cover 2, wherein the emergency protection cover 2 can be made of fireproof material and can be provided with fire extinguishing equipment, such as a miniature fire extinguisher, etc., so as to protect the power cord during the test process. In addition, through the tempered glass surface 4 provided on the emergency protection cover 2, it is convenient for the staff to visually observe the plugging status and the test status. As the power cord plug continues to move, it will eventually be plugged into the socket hole 19 on the power-on control disk 16. The metal sheet used for power supply in the socket hole 19 is connected to the external power supply through the wiring box 17 on the side of the power-on control disk 16. The power source is connected (the conductive cable is arranged on the side of the power control disc 16 to avoid interference with the subsequent unloading process, and the wiring condition can be inspected through the detachable cover 18). At this time, the power supply condition of the power cord can be detected (this process can be detected using existing technology). After the detection is completed, the unloading control component is started, and a thrust will be generated through the three unloading telescopic holes 20. Under the joint action of the three thrusts, the power cord plug inserted in the socket hole 19 can be pushed out horizontally to avoid damage to the power cord plug or the socket hole 19 under the action of the tilting force. The power cord plug after the test can be smoothly inserted into the feeding assembly (the unloading control assembly is electrically connected to the feeding assembly, and when the unloading control assembly pushes out the power cord plug, the feeding assembly performs a corresponding receiving action to prevent the power cord from falling onto the test platform 1). Finally, the power cord after the test is pulled out of the emergency protective cover 2, and the next power cord is tested. The operation is simple, and the plug of the power cord can be easily unplugged and powered on for testing, and the surface of the plug can be prevented from being damaged due to the clamping force during the unplugging process, thereby providing convenience for the staff.

[0031] In one embodiment of the present invention, see Figure 1-Figure 10 , the unloading control assembly comprises: A test equipment box 9, wherein the test equipment box 9 is fixedly mounted on the test support plate 15; A discharge device 8, wherein the discharge device 8 is fixedly connected to the test device box 9, and a movable circular plate 23 is fixedly installed on the output end of the discharge device 8, and the movable circular plate 23 is located in the test device box 9; A plurality of clamping slide blocks 24 are evenly distributed on the movable circular plate 23 and are slidably connected to the inner wall of the test equipment box 9; And a top-unloading unit, which is connected to the movable circular plate 23 and is slidably connected to the unloading telescopic hole 20 .

[0032] The lifting and unloading unit comprises: Detection support rods 25, the number of the detection support rods 25 is three, the three detection support rods 25 are fixedly connected to the movable circular plate 23, and the three detection support rods 25 are respectively arranged opposite to the three unloading telescopic holes 20; A buffer sleeve 26, wherein the buffer sleeve 26 is sleeved on the detection support rod 25 and is slidably connected to the detection support rod 25, and a leakage detection head 27 is also provided on one end of the buffer sleeve 26; And a return spring 28, wherein the return spring 28 is located in the buffer sleeve 26, and two ends of the return spring 28 are fixedly connected to the detection support rod 25 and the buffer sleeve 26 respectively.

[0033] After the test is completed, the unloading device 8 is started to push the movable circular plate 23 to move in the test device box 9, and push the detection support rod 25 and the buffer sleeve 26 to move synchronously. In the process of testing the power cord plug, a part of the length of the buffer sleeve 26 is placed in the unloading telescopic hole 20, and the leakage detection head 27 set at the end of the buffer sleeve 26 is in contact with the power cord plug. The leakage detection head 27 can monitor whether there is leakage in the plug during the entire power-on test process. The leakage detection method can use temperature-sensitive materials, or add simple circuits and use a microcontroller. To check the output of the sensor, etc., which will not be elaborated here. As the movable circular plate 23 pushes the detection support rod 25 to move, the reset spring 28 will be gradually compressed. A pressure sensor can be provided on the reset spring 28 to detect the pressure condition (such as whether each buffer sleeve 26 is subjected to equal pressure and the magnitude of the pressure, etc.). At this time, the feeding assembly can be in a material receiving state. When the reset spring 28 is compressed to a certain extent, it will quickly push the power cord plug to separate from the socket hole 19, thereby realizing the horizontal separation of the power cord plug and the test equipment to avoid damage.

[0034] In one embodiment of the present invention, see Figure 1-Figure 10 , the feeding assembly comprises: A support plate 6, wherein the support plate 6 is fixedly mounted on the test platform 1; A feeding device 7, wherein the feeding device 7 is fixedly connected to the support plate 6, and a movable bracket 10 is fixedly installed on the output end of the feeding device 7; A guide feeding slide bar 5, wherein the guide feeding slide bar 5 is fixedly connected to the support plate 6 and the test support plate 15 respectively, wherein the number of the guide feeding slide bars 5 is three, and the three guide feeding slide bars 5 are all slidably connected to the movable bracket 10; And a positioning control unit, wherein the positioning control unit is connected to the mobile bracket 10 .

[0035] The positioning control unit includes: A special-shaped clamping seat 11, wherein the special-shaped clamping seat 11 is fixedly connected to the movable bracket 10; A positioning receiving support 13, wherein the number of the positioning receiving support 13 is multiple, and the multiple positioning receiving supports 13 are fixedly mounted on the special-shaped clamping seat 11, and an air pump 12 is mounted on each of the positioning receiving supports 13; And a fastening airbag 14 , wherein the fastening airbag 14 is located in the special-shaped clamping seat 11 and is connected to the air pump 12 through a channel provided on the special-shaped clamping seat 11 .

[0036] It also includes: a receiving groove 21, the receiving groove 21 is opened in the middle of the power-on control disc 16; And a positioning detection member 22, wherein the positioning detection member 22 is fixedly installed in the accommodating groove 21 and is arranged opposite to the feeding assembly.

[0037] When the power cord plug to be tested is placed in the special-shaped clamping seat 11, wherein the shape of the special-shaped clamping seat 11 can be set according to the shape of the side of the power cord plug, and the size is larger than the size of the power cord plug, and the depth of the special-shaped clamping seat 11 is less than the thickness of the power cord plug, when a part of the power cord plug is placed in the special-shaped clamping seat 11, and the top surface of the plug contacts the inner wall of the special-shaped clamping seat 11, the air pump 12 is started, and air can be inflated into the fastening airbag 14 through the hole, so that multiple fastening airbags 14 can be expanded (in the subsequent unloading process, the unloading control component can control the start and stop of the air pump 12 to enable the special-shaped clamping seat 11 to smoothly receive the material, which is not done here In addition, a positioning detection member 22 is provided, wherein the positioning detection member 22 can be in the form of a laser lamp to detect the clamping position of the power cord plug. If the light emitted by the positioning detection member 22 cannot fall on the center of the plug, then under the push of the feeding device 7, the plug cannot be aligned with the socket hole 19 and inserted into the socket hole 19, thereby affecting the test efficiency and possibly causing damage to the plug. The positioning detection member 22 can perform real-time monitoring during the entire movement of the plug to ensure that the plug smoothly enters the socket hole 19. No further elaboration is given here.

[0038] It should be noted that in the present invention, unless otherwise clearly specified and limited, the terms "slide", "rotate", "fix", "have" and the like should be understood in a broad sense, for example, it can be a welding connection, a bolt connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power cord plug-in power-on test device, comprising a test platform, characterized in that: Also includes: A test support plate, the test support plate is fixedly mounted on the test platform, and a power control disc is also fixedly mounted on the test support plate, and three socket holes and three unloading telescopic holes are distributed on the power control disc; The three socket holes are spaced apart from the three discharge telescopic holes respectively; and a test control mechanism, the test control mechanism is connected to the test platform and the test support plate respectively, wherein the test control mechanism includes a discharge control component and a feeding component; The feeding assembly is connected to the test platform and the test support plate respectively and is arranged opposite to the socket hole. The unloading control assembly is connected to the test support plate and is slidably connected to the unloading telescopic hole. The unloading control assembly is also electrically connected to the feeding assembly.

2. The power cord plug-in power-on test device according to claim 1, characterized in that: Also includes: An emergency protective cover, the emergency protective cover is fixedly connected to the test platform and the test support plate respectively; And a tempered glass surface, the number of the tempered glass surfaces is multiple, and the multiple tempered glass surfaces are all located on the emergency protective cover.

3. The power cord plug-in power-on test device according to claim 2, characterized in that: Also includes: A monitoring system, wherein the monitoring system is fixedly mounted on the emergency protection cover and is also electrically connected to the test control mechanism; And a wiring box, the wiring box is fixedly installed on the test support plate, and the number of the wiring boxes is three, the three wiring boxes are respectively arranged opposite to the three socket holes, and each of the wiring boxes is provided with a detachable cover.

4. The power cord plug-in power-on test device according to any one of claims 1 to 3, characterized in that: The unloading control assembly comprises: A test equipment box, the test equipment box is fixedly mounted on the test support plate; A discharge device, wherein the discharge device is fixedly connected to the test device box, and a movable circular plate is fixedly installed on the output end of the discharge device, and the movable circular plate is located in the test device box; A plurality of card-mounted sliders, the number of which is multiple, the multiple card-mounted sliders are evenly distributed on the movable circular plate and are slidably connected to the inner wall of the test equipment box; And a top-unloading unit, wherein the top-unloading unit is connected with the movable circular plate and is slidably connected with the unloading telescopic hole.

5. The power cord plug-in power-on test device according to claim 4, characterized in that: The lifting and unloading unit comprises: Detection support rods, the number of the detection support rods is three, the three detection support rods are all fixedly connected to the movable circular plate, and the three detection support rods are respectively arranged opposite to the three unloading telescopic holes; A buffer sleeve, which is sleeved on the detection support rod and slidably connected to the detection support rod, and a leakage detection head is also arranged on one end of the buffer sleeve; and a reset spring, wherein the reset spring is located in the buffer sleeve, and two ends of the reset spring are respectively fixedly connected to the detection support rod and the buffer sleeve.

6. The power cord plug-in power-on test device according to claim 1, characterized in that: The feeding assembly comprises: A support plate, the support plate is fixedly mounted on the test platform; A feeding device, wherein the feeding device is fixedly connected to the support plate, and a movable bracket is fixedly installed on the output end of the feeding device; A guide feeding slide bar, wherein the guide feeding slide bar is fixedly connected to the support plate and the test support plate respectively, wherein the number of the guide feeding slide bars is three, and the three guide feeding slide bars are all slidably connected to the movable bracket; And a positioning control unit, wherein the positioning control unit is connected to the mobile bracket.

7. The power cord plug-in power-on test device according to claim 6, characterized in that: The positioning control unit includes: A special-shaped clamping seat, wherein the special-shaped clamping seat is fixedly connected to the movable bracket; A positioning receiving support, wherein the number of the positioning receiving supports is multiple, and the multiple positioning receiving supports are fixedly mounted on the special-shaped clamping seat, and an air pump is mounted on each of the positioning receiving supports; And a fastening airbag, which is located in the special-shaped clamping seat and is connected with the air pump through a channel arranged on the special-shaped clamping seat.

8. The power cord plug-in power-on test device according to claim 1 or 7, characterized in that: Also includes: A receiving groove, the receiving groove is opened in the middle of the power-on control disc; And a positioning detection member, which is fixedly installed in the accommodating groove and arranged opposite to the feeding assembly.

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