A marking device for sports events

Abstract

A marking device for sports events comprises a frame, a powder hopper, a paint box, a powder discharging mechanism and a paint discharging mechanism; the powder hopper is located in the frame, the powder hopper is filled with lime powder and is connected to the powder discharging mechanism, the powder discharging mechanism feeds material through the powder hopper and sprinkles the lime powder; the paint box is filled with paint and is connected to the paint discharging mechanism, the paint discharging mechanism feeds material through the paint box and sprinkles the paint.

Description

Technical Field

[0001] The invention relates to a sports marking device, in particular to a sports event marking device. Background Art

[0002] During sports events, stadiums generally use large machines to mark standard lines in their stadiums, or use manual marking. Manual marking is labor-intensive and the amount of lime carried at one time is limited. Secondly, manual marking is imprecise and it is difficult to control the accuracy of the lines. Large machines are expensive and the economic burden is too great. Based on this, a marking device for sports events is provided. The marking device has a simple structure and can mark multiple times with one material, thereby reducing the workload of people and the cost of purchasing large machines. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, meet the actual needs, and provide a marking device for sports events to solve the current technical problems of heavy workload and inaccuracy of manual marking.

[0004] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is: designing a marking device for sports events, including a frame, a powder hopper, a paint box, a powder discharging mechanism, and a paint discharging mechanism; the powder hopper is located in the frame, the powder hopper is filled with lime powder and is connected to the powder discharging mechanism, the powder discharging mechanism feeds through the powder hopper and sprinkles the lime powder; the paint box is filled with paint and is connected to the paint discharging mechanism, the paint discharging mechanism feeds through the paint box and sprays the paint.

[0005] Furthermore, the upper end of the powder hopper is rectangular and the lower end is inverted triangle. The upper end of the powder hopper is provided with a feed inlet and the lower end is provided with a lime discharge outlet.

[0006] Furthermore, the powder discharging mechanism comprises a gear roller, which is located below the discharging port and is provided with a gap with the discharging port, and the gap is provided for installing a retaining tube.

[0007] Furthermore, it also includes a first motor installed on the frame, the output end of the first motor is connected to the input end of the gear roller, the gear roller can rotate at a uniform speed following the first motor, and the uniform rotation can evenly spread lime, making the marked lines neater and more tidy, and also includes a retaining tube, which is tubular, one end of which is closed and the other end is open, the retaining tube is sleeved on one end of the gear roller and can move axially on the gear roller, and the retaining tube can cover part or all of the gear when moving axially.

[0008] Furthermore, a threaded hole is provided on the closed end face of the retaining tube, and the retaining tube also includes a screw, one end of which is threadedly connected to the threaded hole and passes through the threaded hole, and the front end of the screw extends into the rotating bearing of the gear roller and can rotate in the gear roller; the gear roller is tubular, and the upper end of the retaining tube serves to block the powder in the powder discharge port, and the lower end serves as a baffle to partially cover the gear roller, so that the lime powder sprinkled by the gear roller is reduced, thereby playing a role in adjusting the line width, and a groove is provided at the end of the extension section of the gear roller, and a rotating bearing is provided in the groove, and the front end of the screw extends into the rotating bearing of the gear roller and can rotate in the gear roller.

[0009] Furthermore, it also includes a rotating motor installed on the frame, the output end of the rotating motor is connected to the outer end of the screw rod, and the screw rod can rotate with the rotating motor. Since the threaded hole set at the rear end of the retaining tube and the screw rod are threadedly matched, the retaining tube can be driven to move when the screw rod rotates.

[0010] Furthermore, it also includes a slide groove, which is located on both sides of the discharge port and passes through the end parts of both sides of the discharge port, and the slide groove opening is arranged downward, and the top cross-section in the slide groove is circular, the lower middle part of the slide groove is columnar, and the top of the slide groove is connected with the lower middle part of the slide groove. It also includes a slide plate located on the side wall of the retaining tube and the same length as the retaining tube. The upper end cross-section of the slider is circular, and the lower middle part of the slider is columnar. The slider is matched and slidably installed in the slide groove and can move axially in the slide groove. The slide groove and the slide rail mainly play two functions. One is to guide the retaining tube, and the other is to support the retaining tube to prevent the retaining tube from falling due to gravity.

[0011] Furthermore, the powder hopper is provided with a material shaking device, which includes a vibration motor installed on the side wall of the powder hopper. In humid weather, the lime is sticky, and the vibration motor can vibrate to separate the stuck lime as soon as possible and sprinkle it into lines.

[0012] Furthermore, it also includes a connecting plate, which is installed on the frame. Shock-absorbing rubber sleeves are respectively provided at the four corners of the powder hopper, and the shock-absorbing rubber sleeves are respectively fixed on the connecting plates. The powder hopper is connected to the frame through the shock-absorbing rubber sleeves to prevent the slider from breaking due to excessive vibration, thereby affecting the normal operation of the entire system.

[0013] Furthermore, the paint box is located on the side of the powder hopper, and an inclination is provided in the lower end cavity of the paint box. A connecting port is provided at the lower end of the inclination, and the connecting port is connected to the paint discharge mechanism. The paint can flow out of the connecting port and enter the paint discharge mechanism by its own gravity.

[0014] Furthermore, the paint discharging mechanism includes a storage cylinder and a pressure plug. A plurality of linearly arranged openings are provided on the side wall at the lower end of the storage cylinder. A nozzle is provided on the opening. The nozzle is used to spray paint to achieve the purpose of marking. The storage cylinder is cylindrical and is installed at the lower end of the paint box. One end of the storage cylinder is connected to the outlet of the booster pump, and the other end of the storage cylinder is open. The pressure plug matches the cross-section of the inner cavity of the storage cylinder and is slidably inserted into the storage cylinder. The pressure plug can move axially in the storage cylinder, and the pressure plug isolates the left and right areas of the storage cylinder located on both sides of the pressure plug.

[0015] Furthermore, it also includes an electric push rod, the telescopic rod of the electric push rod is connected to the outer end of the pressure plug, and the pressure plug can move back and forth in the storage cylinder following the telescopic rod of the electric push rod.

[0016] Furthermore, a receiving plate is provided below the paint discharge nozzle, and the receiving plate is in an inverted arch shape, and a pair of rectangular slides are respectively provided at both ends in the length direction thereof, and also includes two parallel slide rails arranged at the bottom of the frame, the slide rails are parallel to the axial direction of the material storage cylinder and are located below the material storage cylinder, and the slide rails are C-shaped, and the rectangular slides on the receiving plate are inserted into the slide rails. When using the marking vehicle, since the receiving plate is located at the bottom of the vehicle and blocks the nozzle, hold the side of the receiving plate with your fingers and gently pull the receiving plate. At this time, the slide moves in the slide rail until it does not interfere with the marking. After waiting for the marking to be completed, gently push the side of the receiving plate, and the slide rail guides the movement of the slide, thereby driving the receiving plate to move to the paint dripping point to catch the paint. After the receiving is completed, the receiving plate is pulled out from the slide rail, and the paint in the receiving plate is poured back into the paint material box for use.

[0017] Furthermore, the pressure plug is cylindrical, with a front end made of rubber and a rear end made of metal. The rubber is used to better seal the storage cylinder to prevent paint from overflowing.

[0018] The beneficial effects of the present invention are as follows: when a marking device for sports events of the present invention is used for marking powder, the positive rotation of the screw rod drives the retaining tube to move forward, and the movement of the retaining tube covers the gear roller, thereby narrowing the exposed gear roller, and the lime sprinkled uniformly by the gear roller becomes narrower, and the marked line becomes narrower; conversely, the screw rod is reversed, and the marked line becomes wider, so the width of the marked line can also be changed at will.

[0019] After the powder marking is completed, the retaining tube is driven by the rotation of the screw rod to move to completely cover the gear roller. The upper end of the retaining tube can be used as a retaining plate to close the discharge port of the powder hopper, so that the powder cannot pass through the powder storage mechanism, thereby achieving the effect of opening and marking, closing and stopping, greatly reducing the workload of personnel.

[0020] When paint is applied, the booster pump draws the paint into the storage cylinder through the connection port and provides sufficient pressure to the storage cylinder to ensure that the pressure in the storage cylinder is sufficient to spray the paint out of the paint outlet in the form of mist.

[0021] When the paint line width needs to be adjusted, the electric push rod is started, and the telescopic rod of the electric push rod is extended forward to push the pressure plug forward. The pressure plug divides the storage cylinder into two spaces on the left and right. The right space in the storage cylinder becomes narrower, and the nozzle at the lower end is also reduced accordingly, so that less paint is sprayed, and the drawn paint line becomes narrower, and vice versa. It is easy to use and operate, greatly reduces the input of labor, and increases the accuracy of marking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the left side view of the main structure of the present invention;

[0026] Figure 5 The main structure of the present invention is a schematic diagram;

[0027] Figure 6 It is a cross-sectional schematic diagram of the paint discharging mechanism of the present invention;

[0028] Figure 7 This is a schematic diagram of the powder discharging mechanism of the present invention;

[0029] Figure 8 It is a cross-sectional view of the powder storage mechanism of the present invention;

[0030] Fig. 9 It is a partial diagram of the powder discharging mechanism of the present invention;

[0031] Fig.10 This is a partial enlarged view of the connection between the slide groove and the slider of the present invention;

[0032] Fig.11 The internal structure of the paint tank of the present invention;

[0033] Fig.12 It is a partial enlarged view of the connection between the material receiving plate and the frame of the present invention.

[0034] In the figure:

[0035] 1. Frame; 2. Powder hopper; 3. Booster pump; 4. Paint box; 5. Vibration motor; 6. Screw; 7. Feed plate; 8. Gear roller; 9. Storage cylinder; 10. Stop tube; 11. Pressure plug; 12. Shock-absorbing rubber sleeve; 13. Slider; 14. Slide rail; 15. Slide plate; 16. Slide chute; 17. Paint outlet; 18. Electric push rod; 19 Connecting plate; 20. Paint feed inlet; 21. Connecting port; 22. Rotating bearing. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0037] Example 1: A marking device for sports events, see Figures 1 to 12 , including a frame 1, a powder hopper 2, a paint box 4, a powder discharging mechanism, and a paint discharging mechanism; the powder hopper 2 is located in the frame 1, the powder hopper 2 is filled with lime powder and is connected to the powder discharging mechanism, the powder discharging mechanism feeds through the powder hopper 4 and sprinkles the lime powder; the paint box 4 is filled with paint and is connected to the paint discharging mechanism, the paint discharging mechanism feeds through the paint box 4 and sprays the paint.

[0038] Specifically, the powder hopper 2 has a rectangular upper end and an inverted triangle lower end. The powder hopper 2 has a feed inlet at the upper end and a discharge outlet at the lower end.

[0039] Furthermore, the powder discharging mechanism includes a gear roller 8, on which a plurality of tooth grooves are arranged along the axial direction of the gear rod and are evenly spaced around the axial side wall of the gear rod. The lime powder enters the tooth grooves and is sprinkled down by the rotation of the gear rod.

[0040] In this design, the gear roller 8 is located below the discharge port and is provided with a gap with the discharge port, and this gap is used to set and install a retaining tube 10. It also includes a first motor installed on the frame 1, and the output end of the first motor is connected to the input end of the gear roller 8. The gear roller 8 can rotate at a constant speed following the first motor, and the constant speed rotation can evenly spread lime, making the drawn line neater and more neat. It also includes a retaining tube 10, which is tubular, one end of which is closed and the other end is open. The retaining tube 10 is sleeved on one end of the gear roller 8 and can move axially on the gear roller 8, and the retaining tube 10 can cover part or all of the gears when moving axially.

[0041] Initially, the retaining tube 10 completely covers the gear roller 8, which can achieve the effect of closing the discharge port. The retaining tube 10 completely covers the gear roller 8, and at this time, the discharge port in the powder hopper 2 is also completely covered by the retaining tube 10. Start the rotating motor, and the rotating motor drives the screw rod 6 to rotate. The thread on the screw rod 6 cooperates with the thread on the retaining tube 10. The screw rod 6 rotates, driving the retaining tube 10 to move to the right. At this time, the discharge port is opened, and the lime powder can be sprinkled through the gear roller 8. Continue to rotate the screw rod 6 until the required line width is equal to the lime powder line width sprinkled by the gear roller 8. At this time, the retaining tube 10 plays the role of controlling the line width, and normal marking work begins. After the marking is completed, the screw rod 6 is driven to rotate by the rotating motor again until the screw rod 6 drives the retaining tube 10 to completely cover the gear roller 8. Stop rotating the motor, and the lime marking is completed.

[0042] Specifically, a threaded hole is provided on the closed end face of the retaining tube 10, and the retaining tube 10 also includes a screw rod 6, one end of which is threadedly inserted into the threaded hole. The gear rod 8 is tubular. The upper part of the retaining tube 10 is used to block the powder in the powder discharge port, and the lower part acts as a baffle. Through the rotation of the screw rod 6, the retaining tube 10 is driven to move forward, partially covering the gear roller 8, so that the lime powder sprinkled by the gear roller 8 in the axial direction is reduced, thereby playing a role in adjusting the line width. A groove is provided at the extended end of the gear roller 8, and a rotating bearing 22 is provided in the groove. The front end of the screw rod 6 extends into the rotating bearing 22 of the gear roller 8 and can rotate in the gear roller 8.

[0043] It also includes a rotating motor installed on the frame, and the output end of the rotating motor is connected to the outer end of the screw rod 6. The screw rod 6 can rotate with the rotating motor. Since the threaded hole set at the rear end of the retaining tube 10 is threadedly matched with the screw rod 6, the rotation of the screw rod 6 can drive the retaining tube 10 to move axially on the gear rod to achieve the purpose of partially or completely covering the gear rod.

[0044] Furthermore, it also includes a slide groove 16, which is located at the two ends on both sides of the discharge port and passes through the two ends on both sides of the discharge port, and the slide groove 16 is opened downward, and the top cross-section in the slide groove 16 is circular, the middle and lower parts of the slide groove 16 are columnar, and the top of the slide groove 16 is connected with the middle and lower parts of the slide groove 16. It also includes a slider 13 located on the side wall of the retaining tube 10 and the same length as the retaining tube 10, the upper end cross-section of the slider 13 is circular, the middle and lower parts of the slider are columnar, and the slider 13 is matched and slidably installed in the slide groove 16 and can move axially in the slide groove 16; the slide groove 16 and the slider 17 mainly play two roles, one is to guide the retaining tube 10, and the other is to support the retaining tube 10 to prevent the retaining tube 10 from falling due to gravity.

[0045] Furthermore, the powder hopper 2 is provided with a material shaking device, which includes a vibration motor 5, and the vibration motor 5 is installed on the side wall of the powder hopper 2. Since lime is sticky and adhesive, the vibration motor 2 can vibrate to separate the stuck lime as soon as possible and sprinkle it into a line.

[0046] It also includes a connecting plate 19, which is installed on the frame 1. Shock-absorbing rubber sleeves 12 are respectively provided at the four corners of the powder hopper 2. The shock-absorbing rubber sleeves 12 are respectively fixed on the connecting plate 19. The powder hopper 2 is connected to the frame 1 through the shock-absorbing rubber sleeves 12 to prevent other components on the frame from being affected by excessive vibration.

[0047] Specifically, the paint box 4 is located on the side of the powder hopper 2, and the lower end cavity of the paint box 4 is provided with an inclination, and a connecting port 21 is provided at the lower end of the inclination. The connecting port 21 is connected to the paint discharge mechanism, and the paint can flow out of the connecting port and enter the paint discharge mechanism by its own gravity.

[0048] Furthermore, the paint discharging mechanism includes a storage cylinder 9 and a pressure plug 11. The side wall at the lower end of the storage cylinder 9 is provided with a plurality of openings arranged in a linear manner, and a nozzle is provided on the opening. The nozzle is used to spray paint to achieve the purpose of marking. The storage cylinder 11 is cylindrical and is installed at the lower end of the paint material box 4. One end of the storage cylinder 9 is connected to the outlet of the booster pump 3, and the other end of the storage cylinder 9 is open. The pressure plug 11 matches the cross-section of the inner cavity of the storage cylinder 9 and is slidably inserted into the storage cylinder 9, and the pressure plug 11 can move axially in the storage cylinder 9, and the pressure plug 11 isolates the left and right side areas of the storage cylinder 9 located on both sides of the pressure plug 11.

[0049] Furthermore, the pressure plug 11 is cylindrical, with a front end made of rubber and a rear end made of metal. The rubber is used to better seal the storage cylinder 11 to prevent paint from overflowing.

[0050] It also includes an electric push rod 18 , the telescopic rod of which is connected to the outer end of the pressure plug 44 , and the pressure plug 44 can move back and forth in the material storage cylinder 9 following the telescopic rod of the electric push rod 18 .

[0051] A receiving plate 7 is provided at the lower end of the paint discharge port 17. The receiving plate 7 is in an inverted arch shape, and a pair of rectangular slides 15 are provided at both ends in the length direction. It also includes two parallel slide rails 14 arranged at the bottom of the frame. The slide rails 14 are parallel to the axial direction of the storage cylinder 9 and are located below the storage cylinder 9. The slide rails 14 are C-shaped and are arranged through. The slide plate 15 on the receiving plate 7 is inserted into the slide rails 14. When paint marking is not needed, since the receiving plate 7 is located at the bottom of the vehicle, it blocks the residual paint dripping from the nozzle and can be caught below the nozzle.

[0052] When using paint to draw lines, hold the side of the receiving plate 7 with your fingers and gently pull the receiving plate 7. At this time, the slide plate 15 moves in the slide rail 14 until it does not interfere with the nozzle or the receiving plate 7 is taken out of the slide rail. After waiting for the drawing to be completed, gently push the side of the receiving plate 7. The slide rail 14 guides the slide plate 15 to move, thereby driving the receiving plate 7 to move to the paint dripping point to catch the paint.

[0053] In specific implementation:

[0054] When performing powder marking: pour lime powder into the powder hopper 2 in advance. Since lime powder is easy to get wet and clump, the vibration motor 5 installed on the powder hopper 2 can vibrate, making it easier for the wet and agglomerated lime to enter the gear stick. Since the powder hopper 2 is installed on the frame through the shock-absorbing rubber sleeve 12 and the connecting plate 19, the vibration of the entire vehicle body caused by the vibration of the vibration motor 5 is reduced.

[0055] When the lime powder comes out of the powder hopper 2, since the retaining tube 10 does not move, the outlet of the powder hopper 2 is still in a closed state. At this time, the first motor is started, and the first motor drives the gear roller 8 to rotate. At the same time, the rotating motor is turned on, and the rotating motor drives the screw 6 to rotate, and the screw 6 drives the retaining tube 10 to move. The slider 13 is located in the slide groove 16 and guides the retaining tube 10 to move. The outlet of the powder hopper 2 is opened and enters the tooth groove on the gear rod. The gear roller 8 rotates at a constant speed to sprinkle the lime powder.

[0056] Secondly, under the action of the retaining tube 10, the exposed part of the gear roller 8 can be controlled. When the retaining tube 10 moves to the left, the exposed part of the gear roller 8 becomes smaller, and the width of the sprinkled lime becomes narrower. On the contrary, it becomes wider. After the line is drawn, the motor is rotated to drive the screw rod 6 to rotate. At the same time, the retaining tube 10 moves until the retaining tube 10 completely covers the gear roller 8. The outlet of the powder hopper 2 is closed again, and no lime powder falls. It can be stopped at any time.

[0057] When paint marking is performed: paint is poured into the paint material box 4 through the paint feed port 20 in advance, and enters the paint discharge mechanism through the connecting port 21.

[0058] At this time, pull out the slide plate 15 in the slide rail 14, and move the receiving plate 7 away from the bottom of the vehicle. At the same time, adjust the electric push rod 18, which drives the pressure plug 11 to move. Adjust the electric push rod 18 until the width of the sprayed paint reaches the set width. At this time, start the booster pump 3 to increase the pressure in the storage cylinder 9 so that the paint outlet 17 sprays paint and then performs the paint spraying and marking work.

[0059] After the marking is completed, the booster pump 3 is turned off, the receiving plate 7 is taken out, and the slide plate 15 on the receiving plate 7 is aligned with the slide rail 14 at the bottom of the vehicle and inserted into the place where the excess paint drips to catch the excess paint.

[0060] When performing the above actions, the above devices or mechanisms of the present invention can be installed on a walking electric vehicle body, making it more convenient and quick to move.

[0061] In this way, the purpose of lime powder marking or paint marking can be achieved through the above actions.

[0062] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A marking device for sports events, comprising a frame, a powder hopper, a paint box, a powder discharging mechanism, and a paint discharging mechanism; the powder hopper is located inside the frame, characterized in that: The powder hopper is filled with lime powder and connected to the powder discharging mechanism, which feeds the powder hopper and sprinkles the lime powder; the paint box is filled with paint and connected to the paint discharging mechanism, which feeds the paint box and sprays the paint; The powder hopper has a rectangular upper end and an inverted triangle lower end, a feed inlet is provided at the upper end and a discharge outlet is provided at the lower end; The powder discharging mechanism comprises a gear roller, which is located below the discharging port and is arranged with a gap from the discharging port; It also includes a first motor installed on the frame, the output end of the first motor is connected to the input end of the gear roller, the gear roller can rotate at a constant speed following the first motor, and also includes a retaining tube, the retaining tube is tubular, one end of which is closed and the other end is open, the retaining tube is sleeved on one end of the gear roller and can move axially on the gear roller, and the retaining tube can cover part or all of the gear roller when moving axially; The closed end surface of the retaining tube is provided with a threaded hole, and also includes a screw rod, one end of which is threadedly connected to the threaded hole and passes through the threaded hole, a groove is provided at the extended end of the gear stick, a rotating bearing is provided in the groove, and the front end of the screw rod extends into the rotating bearing of the gear roller and can rotate in the gear roller; It also includes a rotating motor installed on the frame, the output end of the rotating motor is connected to the outer end of the screw rod, and the screw rod can rotate with the rotating motor; It also includes a slide groove, which is located at two ends on both sides of the discharge port and passes through the two ends of the discharge port, and the slide groove opening is arranged downward, and the top cross-section in the slide groove is circular, the middle and lower part of the slide groove is columnar, and the top of the slide groove is connected with the middle and lower part of the slide groove. It also includes a slide plate located on the side wall of the retaining tube and the same length as the retaining tube, the upper end cross-section of the slide block is circular, and the middle and lower part of the slide block is columnar, and the slide block is matched and slidably installed in the slide groove and can move axially in the slide groove; The powder hopper is provided with a material shaking device, which includes a vibration motor, and the vibration motor is installed on the side wall of the powder hopper; It also includes a connecting plate, which is mounted on the vehicle frame. Shock-absorbing rubber sleeves are respectively provided at the four corners of the powder hopper, and the shock-absorbing rubber sleeves are respectively fixed on the connecting plate. The powder hopper is connected to the vehicle frame through the shock-absorbing rubber sleeves. The paint material box is located at the side of the powder hopper, and a dip is arranged in the lower end cavity of the paint material box, and a connecting port is arranged at the lower end of the dip, and the connecting port is connected to the paint discharging mechanism; The paint discharging mechanism includes a storage cylinder and a pressure plug. A plurality of openings arranged linearly are provided on the side wall at the lower end of the storage cylinder. A nozzle is provided on the opening. The storage cylinder is cylindrical and installed at the lower end of the paint material box. One end of the storage cylinder is connected to the outlet of the booster pump, and the other end of the storage cylinder is open. The pressure plug matches the cross-section of the inner cavity of the storage cylinder and is slidably inserted into the storage cylinder. The pressure plug can move axially in the storage cylinder, and the pressure plug isolates the left and right areas of the storage cylinder located on both sides of the pressure plug. It also includes an electric push rod fixed on the frame, the telescopic rod of the electric push rod is connected to the outer end of the pressure plug, and the pressure plug can move back and forth in the storage cylinder following the telescopic rod of the electric push rod; A material receiving plate is provided below the nozzle, the material receiving plate is in an inverted arch shape, and a rectangular slide plate is provided at each end of the length direction thereof, and further comprises two parallel slide rails provided at the bottom of the frame, the slide rails are in a C shape, and the rectangular slide plate on the material receiving plate is inserted into the slide rails; The pressure plug is cylindrical, with a front end made of rubber and a rear end made of metal.

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