CN112173692A - Automatic network transformer processing platform of unloading - Google Patents

Abstract

The invention discloses an automatic-discharging network transformer processing table, which relates to the technical field of network transformer processing and comprises a workbench, a base, a vibration disc, lifting devices, a moving device, a material taking device, a conveying device and a discharging assembly, wherein the base is fixedly arranged on the workbench, the vibration disc is fixedly arranged on the workbench, the lifting devices are divided into two groups, the two groups of lifting devices are fixedly arranged on the base, the moving device is fixedly arranged at a lifting and discharging working end, the conveying device is fixedly arranged on the workbench and close to the vibration disc, the material taking device is fixedly arranged on the moving device, and the discharging assembly is fixedly arranged on the workbench and parallel to the conveying device. For processing or inspection purposes.

Description

Automatic network transformer processing platform of unloading

Technical Field

The invention relates to the technical field of network transformer processing, in particular to an automatic blanking network transformer processing table.

Background

The signal level generated by the chip in any CMOS process is always greater than 0V (depending on the process and design requirements of the chip), and the PHY output signal is sent to a place 100 m or more with a large loss of dc component. And if the external network wire is directly connected with the chip, the chip is easily damaged by electromagnetic induction and static electricity. In other words, different grounding methods of the devices and different power grid environments can cause the 0V level of the two devices to be different, so that the signal is transmitted from the A to the B, and the 0V level of the device A is different from the 0V level of the point B, so that a large current can flow from the device with high potential to the device with low potential. The network transformer filters the differential signal output by the PHY with differential mode coupled coil coupling to enhance the signal and couples to the other end of the connecting network line by conversion of the electromagnetic field. Therefore, the network transformer has very important application in daily life of people because the network cable and the PHY are not physically connected and transmit signals to cut off direct current components in the signals and can transmit data in equipment with different 0V levels.

Common network transformers include T1/E1 isolation transformers, ISDN/ADSL interface transformers, T3/E3, SDH, 64KBPS interface transformers; 10/100BASE, 1000BASE-TX network filter; RJ45 integrated transformers, etc. It is mainly applied to: a high performance digital switch; SDH/ATM transport equipment; ISDN, ADSL, VDSL, POE powered device integrated service digital equipment; a FILT fiber loop device; an ethernet switch, etc. When the network transformer is produced and processed, the network transformer needs to be manually taken one by one when being detected, processed in appearance and used for cutting pins because the network transformer is small in size and large in quantity, and the work is complicated and the efficiency is low.

Disclosure of Invention

The invention aims to provide an automatic blanking network transformer processing table, which solves the technical problems that the network transformers are small in size and large in quantity, and need to be manually taken one by one when being detected, processed in appearance and cut pins, and the work is complicated and the efficiency is low in the background technology.

The invention provides an automatic-discharging network transformer processing table which comprises a workbench, a base, a vibrating disk, lifting devices, moving devices, a conveying device, a material taking device and a discharging assembly, wherein the base is fixedly arranged on the workbench, the vibrating disk is fixedly arranged on the workbench, the lifting devices are provided with two groups, the two groups of lifting devices are fixedly arranged on the base, the moving devices are fixedly arranged at the working ends of the lifting devices, the conveying device is fixedly arranged on the workbench and close to the vibrating disk, the material taking device is fixedly arranged on the moving device, and the discharging assembly is fixedly arranged on the workbench and parallel to the conveying device.

Furthermore, the lifting device comprises a support plate, a lifting plate, an adjusting push rod, adjusting racks, adjusting connecting rods and adjusting gears, wherein the support plate and the lifting plate are in a T shape, the support plate and the lifting plate are oppositely arranged up and down, the adjusting push rod is fixedly arranged on one side of the support plate, an adjusting groove is formed in the support plate, two groups of adjusting racks are arranged on the two groups of adjusting racks, the two groups of adjusting racks are in a Z shape, the two groups of adjusting racks are respectively arranged on the support plate and the lifting plate, the adjusting racks on the support plate are slidably arranged on the adjusting groove, the output end of the adjusting push rod is connected with the adjusting racks on the support plate, the adjusting racks on the lifting plate are fixedly arranged on the lifting plate, the adjusting gears are provided with four groups, and the four groups of adjusting gears are respectively arranged at two ends of the two groups of, the four groups of adjusting gears are all meshed with the adjusting racks, the two groups of adjusting connecting rods are arranged, and two ends of the two groups of adjusting connecting rods are respectively in rotating connection with the four groups of adjusting gears.

Further, the mobile device includes first mounting panel, mount pad, guide rail, platform, L type mounting panel, motor, second gear and rack first mounting panel fixed mounting is in elevating gear's work end, the mount pad is fixed to be set up on first mounting panel, the guide rail is equipped with two altogether, two the guide rail is fixed to be set up on the mount pad, the platform is fixed to be set up on two guide rails, L type mounting panel is fixed to be set up on the platform, the motor is fixed to be set up on L type mounting panel, the fixed output that sets up at the motor of second gear, the rack is fixed to be set up on first mounting panel and parallel with the guide rail, second gear and rack intermeshing.

Further, extracting device includes that first supporting seat, second supporting seat, mounting panel, second cylinder, telescopic link, connecting plate, first material and the second of getting get material are got, first mounting seat and second mounting seat are all fixed to be set up on the platform, the mounting panel is fixed to be set up on first supporting seat, the second cylinder sets up on the second mounting seat, the second cylinder sets up on the second supporting seat, the one end setting of telescopic link is at the output of second cylinder, and the other end of telescopic link is connected with the third mounting panel, the fixed one end that sets up at the mounting panel of connecting plate, first material and the second of getting is got material and is all fixed the setting on the connecting plate.

Further, the conveying assembly comprises a first support frame, a positioning portion, a conveying channel and a material distributing cover plate, the first support frame is fixedly arranged on the workbench, the positioning portion is fixedly arranged on one side of the top of the first support frame, one end of the conveying channel is connected with a discharge hole of the vibrating disc, the other end of the conveying channel is connected with the positioning portion, and the material distributing cover plate is fixedly arranged above the positioning portion.

Further, first material piece and the second of getting is got material both sides and is all equipped with sensor and alarm.

Compared with the prior art, the invention has the beneficial effects that:

one of them, through lifting unit's the adjustable extracting device's of setting height, the adjustable extracting device's of when extracting device need not work height makes it can not influence other processing operations, has improved this device's practicality greatly.

And secondly, the feeding and the discharging can be simultaneously realized through the arrangement of a group of moving devices, the structure is simple, the cost is lower, and the paths of the feeding and the discharging are overlapped for a very large part, so that the connection time between the feeding and the discharging is shorter, and the processing efficiency of the product is improved.

Third, setting up through extracting device makes the staff need not manually to get to take the network transformer, has also improved work efficiency greatly when using manpower and materials sparingly.

Fourthly, realized the network transformer material loading through conveyor for this device has had the function of material loading and unloading simultaneously, has improved the practicality of this device greatly.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a first schematic perspective view of the lifting device of the present invention;

FIG. 3 is a schematic perspective view of a second embodiment of the lifting device of the present invention;

FIG. 4 is a schematic perspective view of a mobile device according to the present invention;

FIG. 5 is a schematic perspective view of a material extracting apparatus according to the present invention;

fig. 6 is a schematic perspective view of the conveying device of the present invention.

Reference numerals: the automatic feeding device comprises a workbench 1, a base 2, a vibrating disc 3, a lifting device 4, a moving device 5, a material taking device 6, a conveying device 7, a blanking assembly 8, a supporting plate 41, a lifting plate 42, an adjusting push rod 43, an adjusting rack 44, an adjusting connecting rod 45, an adjusting gear 46, a first mounting plate 51, a mounting seat 52, a guide rail 53, a platform 54, an L-shaped mounting plate 55, a motor 56, a second gear 57, a rack 58, a first supporting seat 61, a second supporting seat 62, a second mounting plate 63, a second air cylinder 64, an expansion link 65, a connecting plate 66, a first material taking part 67, a second material taking part 68, a first supporting frame 71, a positioning part 72, a conveying channel 73, a material distributing cover plate 74, a second supporting frame 81, a blanking chute 82 and a material receiving box 83.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, an embodiment of the present invention provides an automatic blanking network transformer processing table, including a workbench 1, a base 2, a vibration tray 3, two sets of lifting devices 4, a moving device 5, a material taking device 6, a conveying device 7, and a blanking assembly 8, where the base 2 is fixedly disposed on the workbench 1, the vibration tray 3 is fixedly disposed on the workbench 1, the two sets of lifting devices 4 are disposed, the two sets of lifting devices 4 are fixedly disposed on the base 2, the moving device 5 is fixedly disposed at a working end of the lifting device 4, the conveying device 7 is fixedly disposed on the workbench 1 and close to the vibration tray 3, the material taking device 6 is fixedly disposed on the moving device 5, the blanking assembly 8 is fixedly disposed on the workbench 1 and parallel to the conveying device 7, and in a working state, a plurality of products are arranged by the vibration tray 3 in a vibration manner, the products are discharged from the discharge port at a specific posture without manual placement, the products discharged from the discharge port are received and conveyed through the conveying device 7, the height of the material taking device 6 is adjusted through the lifting device 4, the material taking device 6 is driven to move left and right through the moving device 5, and the products are taken away from the conveying device 7 through the material taking device 6 and transferred to the blanking assembly 8 to complete blanking.

Specifically, the lifting device 4 includes a supporting plate 41, a lifting plate 42, an adjusting push rod 43, an adjusting rack 44, an adjusting link 45 and an adjusting gear 46, the supporting plate 41 and the lifting plate 42 are both T-shaped, the supporting plate 41 and the lifting plate 42 are oppositely disposed from top to bottom, the adjusting push rod 43 is fixedly disposed at one side of the supporting plate 41, the supporting plate 41 is provided with an adjusting slot, the adjusting rack 44 is provided with two sets, the adjusting rack 44 is Z-shaped, the two sets of adjusting racks 44 are respectively disposed on the supporting plate 41 and the lifting plate 42, the adjusting rack 44 on the supporting plate 41 is slidably mounted on the adjusting slot, the output end of the adjusting push rod 43 is connected with the adjusting clamp 44 on the supporting plate 41, the adjusting rack 44 on the lifting plate 42 is fixedly disposed on the lifting plate 42, the adjusting gear 46 is provided with four sets, four groups adjusting gear 46 sets up respectively two sets ofly adjust the both ends of rack 44, four groups adjusting gear 46 all with adjust the rack looks 44 meshing, adjusting connecting rod 45 is equipped with two sets ofly, and is two sets of adjusting connecting rod 45's both ends are rotated with four groups adjusting gear 46 respectively and are connected, through the height of the adjustable extracting device 6 of setting of lifting unit, the height that highly makes it can not influence other processing operations when extracting device 6 need not during operation, has improved this device's practicality greatly.

Specifically, the moving device 5 includes a first mounting plate 51, a mounting base 52, guide rails 53, a platform 54, an L-shaped mounting plate 55, a motor 56, a second gear 57 and a rack 58, the first mounting plate 51 is fixedly disposed at the working end of the lifting device 4, the mounting base 52 is fixedly disposed on the first mounting plate 51, the two guide rails 53 are disposed on the mounting base 52, the platform 54 is fixedly disposed on the two guide rails 53, the L-shaped mounting plate 55 is fixedly disposed on the platform 54, the motor 56 is fixedly disposed on the L-shaped mounting plate 55, the motor 56 is disposed to generate power required by the moving device during working, the second gear 57 is fixedly disposed at the output end of the motor 56, the rack 58 is fixedly disposed on the first mounting plate 51 and parallel to the guide rails 53, the second gear 57 and the rack 58 are engaged with each other, can realize material loading and unloading simultaneously through the setting of a set of mobile device 5, simple structure, the cost is lower, and the route of material loading and unloading has very big coincidence for the joining time between the unloading is shorter, has improved the machining efficiency of product.

Specifically, the material taking device 6 comprises a first supporting seat 61, a second supporting seat 62, a second mounting plate 63, a second cylinder 64, an expansion link 65, a connecting plate 66, a first material taking part 67 and a second material taking part 68, wherein the first supporting seat 51 and the second supporting seat 51 are both fixedly arranged on the platform 53, the second mounting plate 63 is fixedly arranged on the first supporting seat 61, the second cylinder 64 is arranged on the second supporting seat 51, the second cylinder 64 is arranged on the second supporting seat 62, the angle of the material taking device 6 can be adjusted by the arrangement of the second cylinder 64, one end of the expansion link 65 is arranged at the output end of the second cylinder 64, the other end of the expansion link 65 is connected with the third mounting plate 63, the connecting plate 66 is fixedly arranged at one end of the second mounting plate 63, and the first material taking part 67 and the second material taking part 68 are both fixedly arranged on the connecting plate 66, first material piece 67 and the second of getting is the electro-magnet, because the pin of current network transformer is mostly formed with iron wire surface nickel plating preparation, the electro-magnet can produce the adsorption effect to it, so after circular telegram for the electro-magnet, can adsorb the network transformer to first material piece 67 and the second of getting gets material 68 on, when extracting device 6 removes to receiving the material chute top, stop to circular telegram for the electro-magnet, magnetism disappears, the network transformer on first material piece 67 and the second of getting material 68 can drop under the action of gravity and accomplish the unloading on unloading subassembly 8, setting up through extracting device 6 makes the staff need not manually to go to take the network transformer, has also improved work efficiency greatly when saving manpower and materials.

Specifically, the conveying assembly comprises a first supporting frame 71, a positioning part 72, a conveying channel 73 and a distributing cover plate 74, the first supporting frame 71 is fixedly arranged on the workbench 1, the positioning part 72 is fixedly arranged on one side of the top of the first supporting frame 71, one end of the conveying channel 73 is connected with the discharge hole of the vibrating disk 3, the other end of the conveying channel 73 is connected with the positioning part 72, the distributing cover plate 74 is fixedly arranged above the positioning part 72, the conveying assembly is connected with the discharge hole of the vibrating disk 3, because products are continuously output from the vibrating disk 3, the product entering the conveyor assembly can be pushed by the following product to move forward in the conveyor assembly, realize the material loading to network transformer through conveyor 7 for this device has had the function of material loading and unloading simultaneously, has improved this device's practicality greatly.

Specifically, unloading subassembly 8 includes second support frame 81, unloading chute 82 and receipts workbin 83, second support frame 81 is equipped with two sets ofly altogether, and two sets of support frames 49 are fixed respectively and are set up on workstation 1, the slope of unloading chute 82 sets up on two sets of support frames 49, the top of unloading chute 82 is close to extracting device 6 and sets up, and the bottom of unloading chute 82 extends to receipts workbin 83 top, when extracting device 6's first material piece 67 and second material piece 68 remove to unloading chute 82 top, can put the processed product on unloading chute 82, the processed product can slide into in the receipts workbin 83 along unloading chute 82.

Specifically, first material piece 67 and the second of getting is got material 68 both sides and all is equipped with sensor and alarm, sensor and alarm are prior art, work according to fixed procedure, whether the network transformer is got to the first material piece 67 of getting of sensor detectable and second material piece 68, if not absorb the network transformer on first material piece 67 and the second material piece 68 of getting, then the alarm will send alarm signal in order to inform the staff to look over whether break down.

The working principle of the invention is as follows: in a working state, a plurality of products are arranged in a vibrating manner through the vibrating disc 3 and are discharged from the discharge port at a specific posture without being manually placed, the products discharged from the discharge port are received and conveyed through the conveying device 7, the height of the material taking device 6 is adjusted through the lifting device 4, the material taking device 6 is driven to move left and right through the moving device 5, the products are taken from the conveying device 7 through the material taking device 6 and are conveyed to the blanking assembly 8 to complete blanking, the lifting device 4 drives two groups of adjusting racks 44 to move through the adjusting push rod 43, the two groups of adjusting racks 44 are respectively arranged on the supporting plate 41 and the lifting plate 42, the lifting plate 42 is driven to lift through the mutual meshing of the four groups of adjusting gears 46 and the two groups of adjusting racks 44, and then the moving device 5 drives the second gear 57 to rotate through the motor 56, the second gear 57 and the rack 58 are meshed with each other to drive the platform 54 to move horizontally on the guide rail 53, so as to drive the material taking device 6 to move, then the first material taking part 67 and the second material taking part 68 in the material taking device 6 are both electromagnets, most of pins of the existing network transformer are made of nickel plating on the surface of iron wires, and the electromagnets can generate an adsorption effect on the pins, so that the network transformer can be adsorbed onto the first material taking part 67 and the second material taking part 68 after being electrified, when the material taking device 6 moves to the position above a material receiving chute, the electrification of the electromagnets is stopped, the magnetism disappears, the network transformers on the first material taking part 67 and the second material taking part 68 can fall onto the blanking assembly 8 under the action of gravity to complete blanking, sensors and alarms are arranged on two sides of the first material taking part 67 and the second material taking part 68, and are the sensors and the alarms are in the prior art, the sensor can detect whether the first material taking part 67 and the second material taking part 68 are sucked to the network transformer or not, if the first material taking part 67 and the second material taking part 68 are not sucked to the network transformer, the alarm can send out an alarm signal to inform a worker to check whether the network transformer fails or not, one end of the conveying channel 73 is connected with the discharge hole of the vibrating disc 3, the other end of the conveying channel 73 is connected with the positioning part 72, the material dividing cover plate 74 is fixedly arranged above the positioning part 72, the conveying assembly is connected with the discharge hole of the vibrating disc 3, and because products are continuously output from the vibrating disc 3, the products entering the conveying assembly can be pushed by the following products to move forwards in the conveying assembly, the feeding of the network transformer is realized through the conveying device 7, so that the device has the functions of feeding and discharging at the same time, finally, when the first and second take-off members 67, 68 of the take-off device 6 are moved over the discharge chute 82, the processed products can be placed on the discharge chute 82 and can slide along the discharge chute 82 into the receiving box 83.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. The utility model provides an automatic network transformer processing platform of unloading which characterized in that: including workstation (1), base (2), vibration dish (3), elevating gear (4), mobile device (5), extracting device (6), conveyor (7) and unloading subassembly (8), base (2) is fixed to be set up on workstation (1), vibration dish (3) are fixed to be set up on workstation (1), elevating gear (4) are equipped with two sets ofly altogether, and are two sets of elevating gear (4) are fixed to be set up on base (2), mobile device (5) are fixed to be set up at elevating gear (4) work end, conveyor (7) are fixed to be set up on workstation (1) and are close to vibration dish (3), extracting device (6) are fixed to be set up on mobile device (5), unloading subassembly (8) are fixed to be set up on workstation (1) and are parallel with conveyor (7).

2. The automatic blanking network transformer processing table according to claim 1, characterized in that: the lifting device (4) comprises a supporting plate (41), a lifting plate (42), an adjusting push rod (43), adjusting racks (44), an adjusting connecting rod (45) and an adjusting gear (46), the supporting plate (41) and the lifting plate (42) are all in a T shape, the supporting plate (41) and the lifting plate (42) are vertically placed, the adjusting push rod (43) is fixedly arranged on one side of the supporting plate (41), an adjusting groove is formed in the supporting plate (41), two groups of adjusting racks (44) are arranged, the two groups of adjusting racks (44) are in a Z shape, the two groups of adjusting racks (44) are respectively arranged on the supporting plate (41) and the lifting plate (42), the adjusting racks (44) on the supporting plate (41) are slidably arranged on the adjusting groove, the output end of the adjusting push rod (43) is connected with the adjusting racks (44) on the supporting plate (41), adjusting rack (44) on lifter plate (42) is fixed to be set up on lifter plate (42), adjusting gear (46) are equipped with four groups, and four groups adjusting gear (46) set up respectively two sets of the both ends of adjusting rack (44), four groups adjusting gear (46) all with adjusting rack (44) mesh mutually, adjusting connecting rod (45) are equipped with two sets ofly, and are two sets of adjusting connecting rod (45)'s both ends rotate with four groups adjusting gear (46) respectively and are connected.

3. The automatic blanking network transformer processing table as claimed in claim 2, wherein: the moving device (5) comprises a first mounting plate (51), a mounting seat (52), guide rails (53), a platform (54), L-shaped mounting plates (55), a motor (56), a second gear (57) and a rack (58), wherein the first mounting plate (51) is fixedly arranged at the working end of the lifting device (4), the mounting seat (52) is fixedly arranged on the first mounting plate (51), the two guide rails (53) are arranged on the mounting seat (52), the platform (54) is fixedly arranged on the two guide rails (53), the L-shaped mounting plate (55) is fixedly arranged on the platform (54), the motor (56) is fixedly arranged on the L-shaped mounting plate (55), the second gear (57) is fixedly arranged on the output end of the motor (56), the rack (58) is fixedly arranged on the first mounting plate (51) and is parallel to the guide rails (53), the second gear (57) and the rack (58) are meshed with each other.

4. The automatic blanking network transformer processing table of claim 3, wherein: the material taking device (6) comprises a first supporting seat (61), a second supporting seat (62), a mounting plate (63), a second air cylinder (64), an expansion rod (65), a connecting plate (66), a first material taking part (67) and a second material taking part (68), the first mounting seat (51) and the second mounting seat (51) are both fixedly arranged on the platform (53), the mounting plate (63) is fixedly arranged on the first supporting seat (61), the second cylinder (64) is arranged on the second mounting seat (51), the second cylinder (64) is arranged on the second supporting seat (62), one end of the telescopic rod (65) is arranged at the output end of the second cylinder (64), the other end of the telescopic rod (65) is connected with the third mounting plate (63), the connecting plate (66) is fixedly arranged at one end of the mounting plate (63), and the first material taking part (67) and the second material taking part (68) are fixedly arranged on the connecting plate (66).

5. The automatic blanking network transformer processing table as claimed in claim 4, wherein: the conveying assembly comprises a first support frame (71), a positioning part (72), a conveying channel (73) and a material distributing cover plate (74), wherein the first support frame (71) is fixedly arranged on the workbench (1), the positioning part (72) is fixedly arranged on one side of the top of the first support frame (71), one end of the conveying channel (73) is connected with a discharge hole of the vibrating disc (3), the other end of the conveying channel (73) is connected with the positioning part (72), and the material distributing cover plate (74) is fixedly arranged above the positioning part (72).

6. The automatic blanking network transformer processing table of claim 5, wherein: unloading subassembly (8) include second support frame (81), unloading chute (82) and receipts workbin (83), second support frame (81) are equipped with two sets ofly altogether, and two sets of support frames (49) are fixed respectively and are set up on workstation (1), unloading chute (82) slope sets up on two sets of support frames (49), the top of unloading chute (82) is close to extracting device (6) and sets up, and the bottom of unloading chute (82) extends to receipts workbin (83) top.

7. The automatic blanking network transformer processing table of claim 6, wherein: and sensors and alarms are arranged on two sides of the first material taking part (67) and the second material taking part (68).

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