Copper wire grinding equipment
By designing the copper wire grinding equipment driven by hydraulic cylinder and the cutoff mechanism driven by cylinder, the problems of high labor intensity, low accuracy and cumbersome processes of operators in the existing copper wire grinding process are solved, and automatic grinding and cutoff of copper wire is realized, and production efficiency is improved.
Patent Information
- Application Number
- CN202421572374.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing copper wire grinding process has high labor intensity, low accuracy and cumbersome processes, resulting in low production efficiency.
A copper wire grinding device is designed, including a grinding mechanism and a cutoff mechanism. The grinding mechanism moves downward through the hydraulic cylinder to realize the inclined setting of the U-frame and the grinding roller, and increase the contact area between the copper wire and the grinding roller. At the same time, a grinding wheel is set up for secondary grinding to improve the accuracy. The cutoff mechanism moves downward through the cylinder drive of the cutoff knife to achieve automatic cutoff of the copper wire.
Through the driving of hydraulic cylinders and cylinders, automatic grinding and cutting of copper wires is achieved, which reduces the labor intensity of operators and improves grinding accuracy and production efficiency.
Smart Images
Figure CN222831393U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of copper wire production, in particular to a copper wire grinding device. Background Art
[0002] Copper wire is a common metal product, widely used in electronics, electricity, communications, construction and other fields. The production process of copper wire is a complex process that requires multiple steps to complete. The copper embryo obtained by smelting ore needs to go through multiple steps such as smelting, casting, and rolling to become the raw material of copper wire. The copper wire needs to be drawn many times to reach the required size and shape.
[0003] Based on the above, the inventors have discovered the following problems: after processing and production, the surface of the current copper wire needs to be polished to change the surface roughness of the copper wire, but the existing copper wire polishing is often done by manually operating a grinder to polish its surface, which increases the labor intensity of the operators and has low copper wire polishing accuracy. After polishing is completed, the copper wire needs to be transferred to a cutting machine to cut the copper wire, and the process is relatively cumbersome, thereby reducing the copper wire production efficiency.
[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a copper wire grinding device is provided to achieve a purpose with greater practical value. Utility Model Content
[0005] In order to solve the above technical problems, the embodiment of the utility model provides a copper wire grinding device, which is specifically implemented through the following technical solutions:
[0006] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein the upper end of the wood-planer working table is provided with a hydraulic cylinder, the output end of the hydraulic cylinder passes through the door-type frame and is provided with a mounting frame, a rotating shaft is inserted and rotatably inserted in the bottom end of the mounting frame, one end of the rotating shaft is provided with a U-shaped frame, the U-shaped frame is inclined, and a grinding roller is rotatably connected to the inside of the U-shaped frame, a supporting seat is embedded and installed in one end of the workbench, a sliding groove is provided at the upper end of the supporting seat, a pair of movable seats are slidably connected in the sliding groove, a fixed frame is installed at the upper end of the pair of movable seats, a grinding wheel is installed inside the fixed frame, and the cutting mechanism comprises a knife seat, the knife seat is arranged on one side of the outer wall of the workbench, and a knife groove is provided on the knife seat, a pair of supports are installed at the upper end of the knife seat, a cylinder is installed at the upper end of the pair of supports, the output ends of the pair of cylinders pass through the supports, and a cutting knife is installed between the pair of cylinders.
[0007] Furthermore, a pair of fixing plates are installed on one side of the upper end of the mounting seat, circular holes are provided inside the pair of fixing plates, and a mounting tube is installed between the pair of circular holes.
[0008] The beneficial effect of adopting the above further scheme is that by setting a hydraulic cylinder, when the hydraulic cylinder is started, it is convenient to push the mounting frame downward, thereby realizing the downward movement of the U-shaped frame, so that the outer part of the grinding roller is fitted with the copper wire, and by setting the U-shaped frame to be inclined, the grinding roller is also set to be inclined, so that the moving direction of the copper wire and the length direction of the grinding roller are not completely the same, thereby increasing the contact area between the grinding roller and the copper wire, and facilitating better grinding of the copper wire; by setting a grinding wheel, when the copper wire enters between a pair of grinding wheels, the pair of grinding wheels can perform secondary grinding on the surface of the copper wire, thereby improving the grinding accuracy; by setting a cutting mechanism, it is convenient to cut the copper wire as needed; by setting a fixing plate, it is convenient to install the mounting tube; by setting the mounting tube, it is convenient to insert the copper wire into the mounting tube; by setting a cylinder, when the cylinder is started, it is convenient to realize the downward movement of the cutting knife, thereby cutting the copper wire under the action of the cutting knife and the knife groove.
[0009] Furthermore, a plurality of automatic telescopic rods are installed on the inner wall of the installation tube, and abutment blocks are installed at the output ends of the plurality of automatic telescopic rods.
[0010] The beneficial effect of adopting the above further scheme is that by setting an automatic telescopic rod, when the automatic telescopic rod is started, it is convenient to push the stop block close to the surface of the copper wire, limit the inner copper wire of the installation tube, so as to facilitate subsequent cutting work.
[0011] Furthermore, a first motor is installed on one side of the outer wall of the U-shaped frame, and the output end of the first motor is transmission-connected to the grinding roller. A driving motor is installed on the upper end of the fixed frame, and the output end of the driving motor is transmission-connected to the grinding wheel.
[0012] The beneficial effect of adopting the above further scheme is that by setting the first motor, the grinding roller is easily rotated to achieve the initial grinding of the copper wire surface, and by setting the driving motor, the grinding wheel is easily rotated to achieve the secondary grinding of the copper wire surface.
[0013] Furthermore, a worm gear is sleeved on the outside of the rotating shaft, a pair of U-shaped plates are installed on the inner bottom end of the mounting frame, a worm is rotatably connected between the pair of U-shaped plates, and the worm and the worm gear are meshed with each other.
[0014] The beneficial effect of adopting the above further scheme is that, through the coordinated use of the worm wheel and the worm, when the worm rotates, the worm wheel is easy to rotate, thereby realizing the rotation of the rotating shaft, and when the rotating shaft rotates, the U-shaped frame will rotate, thereby adjusting the inclination angle of the grinding roller.
[0015] Furthermore, one end of the worm screw passes through one of the U-shaped plates and extends to the outside, and is sleeved with a knob.
[0016] The beneficial effect of adopting the above further solution is that by providing a knob, when the user turns the knob, the worm can be easily rotated.
[0017] Furthermore, the support seat is internally rotatably connected with a bidirectional screw rod, and a guide rod is installed inside the support seat near the bidirectional screw rod. The two ends of the bidirectional screw rod respectively pass through a pair of movable seats and are transmission-connected with the movable seats. The two ends of the guide rod respectively pass through a pair of movable seats and are slidingly connected with the movable seats.
[0018] The beneficial effect of adopting the above further scheme is that through the coordinated use of the bidirectional screw and the guide rod, since a pair of opposite threads are arranged on the outside of the bidirectional screw, when the bidirectional screw rotates, a pair of movable seats can realize opposite linear movement under the sliding action of the guide rod.
[0019] Furthermore, a second motor is installed on one side of the outer wall of the support seat, and the output end of the second motor is transmission-connected to the bidirectional screw through a coupling.
[0020] The beneficial effect of adopting the above further solution is that by providing a second motor, when the second motor is started, it is easy to drive the bidirectional screw rod to rotate.
[0021] Furthermore, a belt conveyor is embedded in the workbench at one end away from the support seat, and pneumatic clamps are installed on both sides of the upper end of the workbench near the belt conveyor.
[0022] The beneficial effect of adopting the above further scheme is that by setting up a belt conveyor, when the belt conveyor is started, it is convenient to convey the copper wire until it is close to the grinding roller, and by setting up a pneumatic clamp, it is convenient to limit the two sides of the copper wire during the conveying process.
[0023] The beneficial effects of the utility model are as follows: the utility model provides a copper wire grinding device obtained by the above-mentioned design. The copper wire grinding device, by arranging a hydraulic cylinder, when the hydraulic cylinder is started, it is convenient to push the mounting frame downward, thereby realizing the downward movement of the U-shaped frame, so that the outer part of the grinding roller is fitted with the copper wire, and by arranging the U-shaped frame to be inclined, so that the grinding roller is also arranged to be inclined, so that the moving direction of the copper wire and the length direction of the grinding roller are not completely the same, the contact area between the grinding roller and the copper wire is increased, and it is convenient to grind the copper wire better, and by arranging a grinding wheel, when the copper wire enters between a pair of grinding wheels, the pair of grinding wheels can perform secondary grinding on the surface of the copper wire, thereby improving the grinding accuracy, and by arranging a cutting mechanism, it is convenient to cut the copper wire according to needs, by arranging a fixing plate, it is convenient to install the mounting tube, by arranging the mounting tube, it is convenient to insert the copper wire into the mounting tube, and by arranging a cylinder, when the cylinder is started, it is convenient to realize the downward movement of the cutting knife, so that the copper wire is cut under the action of the cutting knife and the knife groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 A three-dimensional structure diagram of a copper wire grinding device provided by the utility model Figure 1 ;
[0026] Figure 2 A three-dimensional structure diagram of a copper wire grinding device provided by the utility model Figure 2 ;
[0027] Figure 3 A schematic diagram of the three-dimensional structure of a mounting frame of a copper wire grinding device provided by the utility model;
[0028] Figure 4 A schematic diagram of an exploded three-dimensional structure of a support base of a copper wire grinding device provided by the utility model;
[0029] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a fixing plate of a copper wire grinding device provided by the utility model.
[0030] In the figure: 100, grinding mechanism; 1001, workbench; 1002, door frame; 1003, hydraulic cylinder; 1004, mounting frame; 1005, rotating shaft; 1006, U-shaped frame; 1007, grinding roller; 1008, first motor; 1009, worm gear; 1010, U-shaped plate; 1011, worm; 1012, knob; 1013, support seat; 1014, moving seat; 1015, fixed frame; 1 016, grinding wheel; 1017, driving motor; 1018, bidirectional screw; 1019, guide rod; 1020, second motor; 1021, belt conveyor; 1022, pneumatic clamp; 200, cutting mechanism; 2001, knife holder; 2002, support; 2003, cylinder; 2004, cutting knife; 2005, fixing plate; 2006, mounting tube; 2007, automatic telescopic rod; 2008, stop block. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0033] Embodiment 1
[0034] The utility model provides the following technical solutions: Figure 1-Figure 5As shown, a copper wire grinding device includes a grinding mechanism 100 and a cutting mechanism 200. The grinding mechanism 100 includes a workbench 1001. A door frame 1002 is installed outside the workbench 1001. A hydraulic cylinder 1003 is installed on the upper end of the door frame 1002. The output end of the hydraulic cylinder 1003 passes through the door frame 1002 and is installed with a mounting frame 1004. A rotating shaft 1005 is inserted and rotated inside the bottom end of the mounting frame 1004. A U-shaped frame 1006 is installed at one end of the rotating shaft 1005. The U-shaped frame 1006 is arranged in an inclined manner, and the U-shaped frame 1006 is arranged at an angle. 006 is internally connected with a grinding roller 1007 for rotation, a support seat 1013 is embedded and installed at one end of the workbench 1001, a slide groove is provided at the upper end of the support seat 1013, a pair of movable seats 1014 are slidably connected inside the slide groove, a fixed frame 1015 is installed at the upper end of the pair of movable seats 1014, a grinding wheel 1016 is installed inside the fixed frame 1015, and the cutting mechanism 200 includes a knife seat 2001, which is arranged on one side of the outer wall of the workbench 1001, and a knife groove is provided on the knife seat 2001, and the upper A pair of supports 2002 are installed at the ends of the pair of supports 2002, and cylinders 2003 are installed at the upper ends of the pair of supports 2002. The output ends of the pair of cylinders 2003 penetrate the supports 2002, and a cutting knife 2004 is installed between the pair of cylinders 2003. By starting the hydraulic cylinder 1003, it is convenient to push the mounting frame 1004 downward, thereby realizing the downward movement of the U-shaped frame 1006, so that the outside of the grinding roller 1007 is in contact with the copper wire. By setting the U-shaped frame 1006 to be inclined, the grinding roller 1007 is also inclined, so that the moving direction of the copper wire is aligned with the grinding roller. The length direction of 1007 is not completely the same, which increases the contact area between the grinding roller 1007 and the copper wire, so as to facilitate better grinding of the copper wire. By setting the grinding wheel 1016, when the copper wire enters between a pair of grinding wheels 1016, the pair of grinding wheels 1016 can perform secondary grinding on the surface of the copper wire, so as to improve the grinding accuracy. By setting the cutting mechanism 200, it is convenient to cut the copper wire as needed. By starting the cylinder 2003, it is convenient to realize the downward movement of the cutting knife 2004, so that the copper wire can be cut under the action of the cutting knife 2004 and the knife groove.
[0035] Embodiment 2
[0036] Reference Figure 1-Figure 5As shown, a pair of fixing plates 2005 are installed on one side of the upper end of the knife seat 2001, and circular holes are provided inside the pair of fixing plates 2005. A mounting cylinder 2006 is installed between the pair of circular holes. A plurality of automatic telescopic rods 2007 are installed on the inner wall of the mounting cylinder 2006, and a plurality of output ends of the automatic telescopic rods 2007 are installed with abutments 2008. A first motor 1008 is installed on one side of the outer wall of the U-shaped frame 1006, and the output end of the first motor 1008 is transmission-connected to the grinding roller 1007. A driving motor 1017 is installed on the upper end of the fixing frame 1015. The driving motor 1017 is installed on the upper end of the fixing frame 1015. The output end of the machine 1017 is connected to the grinding wheel 1016 by transmission. By setting the mounting cylinder 2006, it is convenient to insert the copper wire into the mounting cylinder 2006. By starting the automatic telescopic rod 2007, it is convenient to push the block 2008 close to the surface of the copper wire, and limit the inner copper wire of the mounting cylinder 2006 to facilitate the subsequent cutting work. By starting the first motor 1008, the grinding roller 1007 is rotated to achieve preliminary grinding of the copper wire surface. By starting the driving motor 1017, the grinding wheel 1016 is rotated to achieve secondary grinding of the copper wire surface.
[0037] Embodiment 3
[0038] Reference Figure 1-Figure 5As shown, the outer part of the rotating shaft 1005 is sleeved with a worm gear 1009, and a pair of U-shaped plates 1010 are installed at the inner bottom end of the mounting frame 1004. A worm 1011 is rotatably connected between the pair of U-shaped plates 1010. The worm 1011 and the worm gear 1009 are meshed with each other. One end of the worm 1011 passes through one of the U-shaped plates 1010 and extends to the outside, and is sleeved with a knob 1012. The inner part of the support seat 1013 is rotatably connected with a bidirectional screw rod 1018, and the inner part of the support seat 1013 is close to the bidirectional screw rod 1018. A guide rod 1019 is installed at 8, and the two ends of the bidirectional screw rod 1018 respectively penetrate a pair of moving seats 1014 and are connected to the moving seats 1014 by transmission. The two ends of the guide rod 1019 respectively penetrate a pair of moving seats 1014 and are connected to the moving seats 1014 by sliding. A second motor 1020 is installed on one side of the outer wall of the support seat 1013, and the output end of the second motor 1020 is connected to the bidirectional screw rod 1018 by transmission through a coupling. The workbench 1001 is embedded inside the end away from the support seat 1013. There is a belt conveyor 1021, and the upper end of the workbench 1001 is equipped with pneumatic clamps 1022 near both sides of the belt conveyor 1021. Through the cooperation of the worm wheel 1009 and the worm 1011, when the worm 1011 rotates, it is convenient for the worm wheel 1009 to rotate, thereby realizing the rotation of the rotating shaft 1005. When the rotating shaft 1005 rotates, the U-shaped frame 1006 will rotate, thereby adjusting the inclination angle of the grinding roller 1007. By setting a knob 1012, when the user rotates the knob 1012, In order to realize the rotation of the worm 1011, the two-way screw 1018 and the guide rod 1019 are used in coordination. When the two-way screw 1018 rotates, a pair of movable seats 1014 can realize opposite movement under the sliding action of the guide rod 1019. By starting the second motor 1020, the two-way screw 1018 can be driven to rotate. By starting the belt conveyor 1021, the copper wire can be transported until it is close to the grinding roller 1007. By starting the pneumatic clamp 1022, the two sides of the copper wire can be limited during the transportation process.
[0039] Specifically, the working principle of this copper wire grinding equipment is as follows: when in use, first turn the knob 1012 to rotate the worm 1011, which is convenient for the worm wheel 1009 to rotate, and then realize the rotation of the rotating shaft 1005. When the rotating shaft 1005 rotates, the U-shaped frame 1006 will be rotated, thereby adjusting the inclination angle of the grinding roller 1007, so that the grinding roller 1007 is also set at an angle, and then start the belt conveyor 1021 to facilitate the transportation of the copper wire until it is close to the grinding roller 1007, and by starting the pneumatic clamp 1022, it is convenient to limit the two sides of the copper wire during the transportation process, and by starting the hydraulic cylinder 1003, it is convenient to push the mounting frame 1004 downward, thereby realizing the downward movement of the U-shaped frame 1006, so that the outside of the grinding roller 1007 is in contact with the copper wire, and at the same time, the moving direction of the copper wire is consistent with the grinding roller 1007. The length directions are not completely the same, which increases the contact area between the grinding roller 1007 and the copper wire. By starting the first motor 1008, the grinding roller 1007 is rotated to achieve preliminary grinding of the copper wire surface. When the copper wire enters between a pair of grinding wheels 1016, the mobile drive motor 1017 is started to facilitate the forward and reverse rotation of the pair of grinding wheels 1016, thereby achieving secondary grinding of the copper wire surface. When the copper wire penetrates into the mounting tube 2006 during movement, it passes out from the inside of the mounting tube 2006, and then according to the need for cutting, the automatic telescopic rod 2007 is started to facilitate pushing the block 2008 close to the copper wire surface, limiting the inner copper wire of the mounting tube 2006, and then starting the cylinder 2003 to facilitate the downward movement of the cutting knife 2004, so that the copper wire is cut off under the action of the cutting knife 2004 and the knife groove.
[0040] It should be noted that, a copper wire grinding equipment, the specific model specifications of the hydraulic cylinder 1003, the first motor 1008, the drive motor 1017, the second motor 1020, the belt conveyor 1021, the pneumatic clamp 1022, the cylinder 2003 and the automatic telescopic rod 2007 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.
[0041] A copper wire grinding device, the power supply and principle of the hydraulic cylinder 1003, the first motor 1008, the drive motor 1017, the second motor 1020, the belt conveyor 1021, the pneumatic clamp 1022, the cylinder 2003 and the automatic telescopic rod 2007 are clear to those skilled in the art and will not be described in detail here.
[0042] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A copper wire grinding device, characterized in that: The invention comprises a grinding mechanism (100) and a cutting mechanism (200), wherein the grinding mechanism (100) comprises a workbench (1001), wherein a door-shaped frame (1002) is installed outside the workbench (1001), wherein a hydraulic cylinder (1003) is installed at the upper end of the door-shaped frame (1002), wherein the output end of the hydraulic cylinder (1003) passes through the door-shaped frame (1002) and is installed with a mounting frame (1004), wherein a rotating shaft (1005) is inserted and rotatably inserted inside the bottom end of the mounting frame (1004), wherein a U-shaped frame (1006) is installed at one end of the rotating shaft (1005), wherein the U-shaped frame (1006) is arranged in an inclined manner, and a grinding roller (1007) is rotatably connected inside the U-shaped frame (1006), wherein a support seat (1013) is embedded and installed inside one end of the workbench (1001), wherein the support seat (1013) is inserted and installed inside the workbench (1001), wherein the support seat (1013) is inserted and installed inside the workbench (1001), wherein the support seat (1013) is inserted and inserted into the bottom end of the mounting frame (1004 ... A slide groove is provided at the upper end of the support seat (1013), a pair of movable seats (1014) are slidably connected inside the slide groove, a fixed frame (1015) is installed at the upper end of the pair of movable seats (1014), a grinding wheel (1016) is installed inside the fixed frame (1015), the cutting mechanism (200) comprises a knife seat (2001), the knife seat (2001) is arranged on one side of the outer wall of the workbench (1001), and a knife groove is provided on the knife seat (2001), a pair of supports (2002) are installed at the upper end of the pair of supports (2002), a cylinder (2003) is installed at the upper end of the pair of supports (2002), the output ends of the pair of cylinders (2003) pass through the supports (2002), and a cutting knife (2004) is installed between the pair of cylinders (2003).
2. A copper wire grinding device according to claim 1, characterized in that: A pair of fixing plates (2005) are installed on one side of the upper end of the knife seat (2001), circular holes are provided inside the pair of fixing plates (2005), and a mounting cylinder (2006) is installed between the pair of circular holes.
3. A copper wire grinding device according to claim 2, characterized in that: A plurality of automatic telescopic rods (2007) are installed on the inner wall of the installation cylinder (2006), and abutment blocks (2008) are installed at the output ends of the plurality of automatic telescopic rods (2007).
4. A copper wire grinding device according to claim 1, characterized in that: A first motor (1008) is mounted on one side of the outer wall of the U-shaped frame (1006), and an output end of the first motor (1008) is transmission-connected to the grinding roller (1007). A driving motor (1017) is mounted on the upper end of the fixed frame (1015), and an output end of the driving motor (1017) is transmission-connected to the grinding wheel (1016).
5. A copper wire grinding device according to claim 4, characterized in that: A worm gear (1009) is sleeved on the outside of the rotating shaft (1005), and a pair of U-shaped plates (1010) are installed on the inner bottom end of the mounting frame (1004). A worm (1011) is rotatably connected between the pair of U-shaped plates (1010), and the worm (1011) and the worm gear (1009) are meshed with each other.
6. A copper wire grinding device according to claim 5, characterized in that: One end of the worm (1011) passes through one of the U-shaped plates (1010) and extends to the outside, and is sleeved with a knob (1012).
7. A copper wire grinding device according to claim 6, characterized in that: The support seat (1013) is internally rotatably connected with a bidirectional screw rod (1018), and a guide rod (1019) is installed inside the support seat (1013) near the bidirectional screw rod (1018). The two ends of the bidirectional screw rod (1018) respectively penetrate a pair of movable seats (1014) and are transmission-connected to the movable seats (1014). The two ends of the guide rod (1019) respectively penetrate a pair of movable seats (1014) and are slidingly connected to the movable seats (1014).
8. A copper wire grinding device according to claim 7, characterized in that: A second motor (1020) is mounted on one side of the outer wall of the support seat (1013), and an output end of the second motor (1020) is transmission-connected to a bidirectional screw rod (1018) via a coupling.
9. A copper wire grinding device according to claim 8, characterized in that: A belt conveyor (1021) is embedded in the workbench (1001) at one end away from the support seat (1013), and pneumatic clamps (1022) are installed on both sides of the upper end of the workbench (1001) close to the belt conveyor (1021).