Drilling device for cement prefabricated product production
By designing a drilling device with an ejection mechanism, the problem of the cement block easily stuck in the drilling process is solved, and the anti-blocking of the drill bit and the efficient launch of the cement block are achieved, which improves the production efficiency and equipment life.
Patent Information
- Application Number
- CN202411943742.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-14
AI Technical Summary
During the production process of cement preforms, when the circular drill bit is drilled on the cement block, the cement block is prone to jamming the drill bit, resulting in reduced working efficiency, drill bit damage and increased production costs.
A drilling device with ejection function is designed, including an ejection mechanism consisting of a sleeve ring, a sleeve and a rod. Through the reciprocating thread of the sleeve in the installation tube, the ejection rod is driven to extend and retract relative to the drill bit, and is used to push the cement block stuck in the drill bit.
It effectively prevents drill bit blockage, improves the roll-out efficiency of cement blocks, reduces the damage and maintenance requirements for drill bits during work, and improves production efficiency and equipment life.
Smart Images
Figure CN119610418A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cement product production, in particular to a drilling device for cement prefabricated product production. Background Art
[0002] In the production process of cement prefabricated products, reserving pipe openings is a crucial step, which ensures the convenience and accuracy of subsequent pipe installation. However, in actual operation, some technical difficulties are often encountered. Among them, the most common and most troublesome problem is that when using a round drill bit to drill holes in cement blocks to reserve pipe openings, the cement blocks sometimes get stuck inside the drill bit accidentally, which not only affects work efficiency, but may also cause damage to the drill bit and equipment, bringing many inconveniences to production work.
[0003] Specifically, when a worker holds an electric drill, aligns it with the marked position on the cement prefabricated product, and slowly presses the switch of the electric drill, the round drill bit begins to rotate and cuts into the cement block. As the drill bit goes deeper, the originally hard cement block is gradually cut into powder and discharged from the hole. However, during the drilling process, due to the viscosity and hardness of the cement block itself, coupled with the pressure and friction generated during drilling, sometimes some cement block fragments are squeezed into the internal space of the drill bit, forming a blockage. When this happens, the drill bit will be like "stuck" and cannot be rotated or pulled out normally. At this time, the worker has to suspend work and spend extra time and energy to clean the cement block fragments inside the drill bit. This not only reduces work efficiency, but may also damage the drill bit due to frequent cleaning and maintenance work, further increasing production costs.
[0004] Therefore, the traditional drilling device urgently needs to solve the problem that cement blocks are easy to get stuck in the drill bit. Summary of the invention
[0005] In order to overcome the disadvantage that cement blocks are blocked in a circular drill bit and are inconvenient to be removed when drilling cement prefabricated products, the present invention provides a drilling device for cement prefabricated product production with an ejection function.
[0006] The technical implementation scheme of the present invention is: a drilling device for cement prefabricated product production, including a base, a guide rod, a movable base, a mounting tube and a drill bit, the guide rod is fixedly connected to the base, the movable base is slidably connected in the guide rod, a mounting tube is arranged on one side of the movable base, a central shaft and a drill bit that rotate and mesh with each other are arranged in the mounting tube, specifically, a transmission gear is connected in the central shaft through a key, teeth are arranged on the outside of the drill bit, the transmission gear meshes with the teeth, a power source is connected to the other side of the movable base, the power source transmits the power to the central shaft through a transmission assembly, and also includes a top located in the drill bit for relative movement. The ejection mechanism is composed of a collar, a sleeve and a push rod. The outer side of the sleeve is provided with a thread, and the sleeve is rotatably connected to the mounting tube through the thread. An inner ratchet limit ring is fixed to the bottom of the sleeve, and the collar is slidably connected to the upper end of the central shaft. The inner ratchet limit ring is sleeved on the collar, and the collar drives the inner ratchet limit ring to rotate in one direction. The push rod is slidably connected to the drill bit, and the upper end of the push rod is rotatably connected to the inner ratchet limit ring. When the central shaft rotates clockwise, it can drive the sleeve to move up and down in the mounting tube, and the sleeve drives the push rod to move synchronously through the inner ratchet limit ring, and the push rod will move relative to the drill bit.
[0007] Optionally, an inner ring of the inner ratchet limit ring is provided with an oblique ratchet ring, and an outer part of the collar is provided with oblique ratchet teeth, the ratchet teeth are configured with springs to enable radial movement, and the ratchet teeth and the ratchet ring can mesh with each other.
[0008] Optionally, an axial spline is provided on the outside of the central shaft, and the collar is slidably connected to the outside of the central shaft via the spline.
[0009] Optionally, a closed reciprocating thread is provided on the outside of the sleeve. When the sleeve ring drives the inner ratchet limit ring to rotate, the sleeve and the inner ratchet limit ring rotate synchronously, and the sleeve will move up and down under the action of the reciprocating thread.
[0010] Optionally, it also includes a vibration mechanism located in the push rod to provide impact force, the vibration mechanism consists of an impact rod, a reset spring and a cam shaft, the impact rod is slidably connected in the push rod, a reset spring is connected between the impact rod and the push rod, a sliding ring is fixedly connected to the upper end of the impact rod, the sliding ring is sleeved on the outside of the sleeve ring, an oblique contact surface is opened on the sliding ring, and the bottom of the inner ratchet limit ring is evenly fixed with a cam shaft, which can contact and push the oblique contact surface.
[0011] Optionally, it also includes a speed reduction wheel group and a control screw rod for controlling the uniform speed movement of the moving seat. The control screw rod is rotatably connected to the base, and the control screw rod is connected to the moving seat through a thread. The central axis drives the control screw rod to rotate through the speed reduction wheel group, and the speed reduction wheel group is arranged in the moving seat.
[0012] Optionally, a fixing bolt is also included, and the fixing bolt is connected in the base.
[0013] Optionally, the fixing bolt consists of a first nut, a first screw rod, a second nut, a second screw rod, a cone block and an expansion block. The first screw rod is hollow, and a radially movable expansion block is arranged at the bottom of the first screw rod. The first nut is connected in the base and is connected to the first screw rod by a thread. The second screw rod is slidably connected in the first screw rod. The second nut is rotatably connected to the end of the first screw rod and is connected to the second screw rod by a thread. The lower end of the second screw rod is connected with a cone block, and the cone block can push the expansion block.
[0014] The present invention has the following advantages: 1. The power source drives the drill bit to rotate counterclockwise to drill a hole. After the drilling is completed, the power source drives the drill bit to rotate clockwise. The collar will drive the inner ratchet limit ring to rotate synchronously. The sleeve fixed to the upper part of the inner ratchet limit ring is provided with a reciprocating thread. The sleeve will move up and down in the mounting tube, thereby driving the push rod to extend and retract relative to the drill bit, thereby pushing the cement block stuck in the drill bit to prevent the drill bit from being blocked.
[0015] 2. When the inner ratchet limit ring rotates, the convex shaft at the lower end continuously pushes the impact rod to move up and down quickly. The impact rod will continuously push the cement block at the end of the push rod, thereby improving the pushing efficiency of the push rod and efficiently pushing the cement block outward.
[0016] 3. A speed reduction wheel set is provided, so that while the drill bit rotates at high speed, the moving seat can drive the drill bit to advance at a uniform and slow speed, thus improving the drilling quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0018] Figure 2 It is a cross-sectional view of the three-dimensional structure of the present invention.
[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the ejection mechanism of the present invention.
[0020] Figure 4 It is a three-dimensional structural separation diagram of the collar, the inner ratchet limit ring and the sleeve of the present invention.
[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the vibration mechanism of the present invention.
[0022] Figure 6 It is a three-dimensional structural detail diagram of the vibration mechanism of the present invention.
[0023] Figure 7 It is a three-dimensional structural schematic diagram of the speed reduction wheel set and the control screw rod of the present invention.
[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing bolt of the present invention when it is not unfolded.
[0025] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixing bolt of the present invention when it is unfolded.
[0026] The meanings of the reference numerals in the figure are as follows: 1: base, 2: guide rod, 3: moving seat, 301: mounting tube, 4: power source, 5: transmission assembly, 6: center shaft, 601: transmission gear, 7: drill bit, 8: collar, 801: ratchet teeth, 9: inner ratchet limit ring, 10: sleeve, 1001: reciprocating thread, 11: push rod, 12: impact rod, 1201: sliding ring, 1202: oblique contact surface, 13: return spring, 14: cam shaft, 15: speed reduction wheel set, 16: control screw rod, 17: fixing bolt, 1701: first nut, 1702: first screw rod, 1703: second nut, 1704: second screw rod, 1705: cone block, 1706: expansion block. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.
[0028] Embodiment: A drilling device for cement prefabricated product production, such as Figure 1-Figure 4As shown, it includes a base 1, a guide rod 2, a moving seat 3, a mounting tube 301 and a drill bit 7. The guide rod 2 is fixed to the base 1, and the moving seat 3 is slidably connected in the guide rod 2. The front side of the moving seat 3 is provided with a mounting tube 301, and the mounting tube 301 is provided with a central shaft 6 and a drill bit 7 that rotate and mesh with each other. Specifically, a transmission gear 601 is connected to the central shaft 6 through a key, and teeth are provided on the outside of the drill bit 7. The transmission gear 601 meshes with the teeth. The rear side of the moving seat 3 is connected with a power source 4. In this embodiment, the power source 4 is a servo motor. The central shaft 6 is driven by the transmission assembly 5, which is a belt pulley group, and the transmission belt of the belt pulley group is a chain to improve the transmission efficiency. The servo motor is turned on to drive the transmission assembly 5 to rotate, and then the central shaft 6 drives the drill 7 to rotate and punch holes. It also includes an ejection mechanism located in the drill 7 for relative movement. The ejection mechanism consists of a collar 8, a sleeve 10 and a push rod 11. The sleeve 10 is provided with a closed reciprocating thread 1001 on the outside. The bottom of the sleeve 10 is fixed with an inner ratchet limit ring 9. The central shaft 6 is provided with an axial The spline, the collar 8 is slidably connected to the outside of the central shaft 6 through the spline, the inner ratchet limit ring 9 is sleeved on the collar 8, and the collar 8 drives the inner ratchet limit ring 9 to rotate in one direction. Specifically, the inner ring of the inner ratchet limit ring 9 is provided with an oblique ratchet ring, and the outer side of the collar 8 is slidably provided with an oblique ratchet tooth 801, the ratchet tooth 801 is provided with a spring to enable radial movement, and the ratchet tooth 801 is unidirectionally meshed with the ratchet ring, thereby playing the function of a one-way clutch, the push rod 11 is slidably connected in the drill bit 7, and the upper end of the push rod 11 is rotatably connected to the inner ratchet limit ring 9, When the center shaft 6 rotates counterclockwise, the ratchet teeth 801 are not engaged with the inner ratchet limit ring 9, and the drill bit 7 is drilling at this time. When the center shaft 6 rotates clockwise, the ratchet teeth 801 in the collar 8 are engaged with the ratchet ring, and the collar 8 drives the inner ratchet limit ring 9 to rotate. The sleeve 10 rotates synchronously with the inner ratchet limit ring 9. The sleeve 10 will move up and down under the action of the reciprocating thread 1001, thereby driving the push rod 11 to move up and down. The push rod 11 will move up and down relative to the drill bit 7, and the bottom end of the push rod 11 will push the cement block in the drill bit 7 outward.
[0029] like Figure 5 and Figure 6As shown, it also includes a vibration mechanism located in the top rod 11 to provide impact force, the vibration mechanism is composed of an impact rod 12, a reset spring 13 and a convex shaft 14, the impact rod 12 is slidably connected in the top rod 11, and a reset spring 13 is connected between the impact rod 12 and the top rod 11. A sliding ring 1201 is fixedly connected to the upper end of the impact rod 12, and the ring 8 passes through the sliding ring 1201. An oblique contact surface 1202 is provided on the sliding ring 1201, and the bottom of the inner ratchet limit ring 9 is evenly fixed with a convex shaft 14, which can contact and push the oblique contact surface 1202. When the center shaft 6 drives the inner ratchet limit ring 9 to rotate clockwise, not only does the sleeve 10 move back and forth up and down in the mounting tube 301, but the cam 14 also continuously pushes the sliding ring 1201, and then continuously pushes the impact rod 12 to move up and down quickly. Although the lower end of the impact rod 12 is flush with the push rod 11 in the initial state, under the push of the cam 14, the impact rod 12 will continue to push the cement block at the end of the push rod 11, thereby improving the pushing efficiency of the push rod 11, not only breaking up the cement block in the circular drill bit 7, but also efficiently pushing it outward.
[0030] like Figure 7 As shown, it also includes a deceleration wheel set 15 and a control screw 16 for controlling the uniform movement of the mobile seat 3. The control screw 16 is rotatably connected to the base 1, and the control screw 16 is connected to the mobile seat 3 through a thread. The central shaft 6 drives the control screw 16 to rotate through the deceleration wheel set 15. The deceleration wheel set 15 is arranged in the mobile seat 3. In this embodiment, the deceleration wheel set 15 is composed of a worm wheel, a worm and three helical gears. The worm is connected to the central shaft, and the worm wheel is rotatably connected to the mobile seat 3. The worm is meshed with the worm wheel, one of which is coaxially arranged with the worm wheel, and the other is rotatably connected to the mobile seat 3. And meshed with the previous bevel gear, its three bevel gears are rotatably connected in the moving seat 3 and are threadedly connected with the control screw 16, and meshed with the previous bevel gear. After the servo motor drives the central shaft 6 to rotate, the central shaft 6 drives the control screw 16 to rotate at a low speed through the speed reduction wheel set 15, and the control screw 16 drives the moving seat 3 to move in the guide rod 2 through the external thread. Because the drill bit 7 needs to drill holes in the cement prefabricated product slowly, the speed reduction wheel set 15 is set with high practicality, so that when the drill bit 7 rotates at a high speed, the moving seat 3 can drive the drill bit 7 to advance at a uniform and slow speed to improve the drilling quality.
[0031] like Figure 1 , Figure 2 , Figure 8 and Fig. 9As shown, the fixing bolt 17 is connected in the base 1, and the fixing bolt 17 consists of a first nut 1701, a first screw rod 1702, a second nut 1703, a second screw rod 1704, a cone block 1705 and an expansion block 1706. The first screw rod 1702 is hollow, and a radially movable expansion block 1706 is arranged at the bottom of the first screw rod 1702. The first nut 1701 is fixedly connected in the base 1 and is connected to the first screw rod 1702 by a thread. The second screw rod 1704 is slidably connected in the first screw rod 1702. The second nut 1703 is rotatably connected to the end of the first screw rod 1702 and is connected to the second screw rod 1704 by a thread. The lower end of the second screw rod 1704 is connected with a cone block 1705, and the cone block 1705 can push the expansion block 1706.
[0032] The working principle of the embodiment of the present invention is as follows: the base 1 is placed in a plane, and the first screw rod 1702 is rotated into a reserved fixing hole, which is a positioning hole for the fixing bolt 17 to fix the base 1, and then the second nut 1703 is rotated to adjust the position of the second screw rod 1704, so that the cone block 1705 pushes the expansion block 1706 to move radially, and the expansion block 1706 will fix the second screw rod 1704 after contacting the inner wall of the fixing hole, so that the fixing bolt 17 will remain in a stable state, thereby fixing the base 1, and the front end part of the drill bit 7 of the device It is a detachable structure. Drill bits 7 of different specifications can be replaced by snap-fitting. The power source 4 is turned on, that is, the servo motor drives the central shaft 6 to rotate counterclockwise through the transmission assembly 5, and the central shaft 6 will drive the drill bit 7 to rotate synchronously. Since the ratchet teeth 801 on the surface of the central shaft 6 are not engaged with the inner ratchet ring of the inner ratchet limit ring 9, the inner ratchet limit ring 9 remains stationary at this time. At the same time, the central shaft 6 drives the control screw 16 to rotate at a low speed through the speed reduction wheel set 15, and the control screw 16 will drive the moving seat 3 to slowly move downward through the thread opened on the outside. The drill bit 7 rotates at high speed to drill holes while slowly penetrating into the cement preform. After drilling the cement preform, the servo motor is controlled to rotate clockwise, and the central shaft 6 also rotates clockwise. The movable seat 3 will slowly move upward. At the same time, the ratchet teeth 801 on the surface of the central shaft 6 will drive the inner ratchet limit ring 9 to rotate clockwise, and the inner ratchet limit ring 9 drives the upper sleeve 10 to rotate synchronously. Since the outer side of the sleeve 10 is provided with a reciprocating thread 1001, the sleeve 10 reciprocates downward and then upward while rotating. The push rod 11 rotatably connected to the inner ratchet limit ring 9 will extend and retract relative to the drill bit 7, so as to push the cement block stuck in the drill bit 7 to prevent the drill bit 7 from being blocked. At the same time, the convex shaft 14 located at the lower end of the inner ratchet limit ring 9 continues to push the impact rod 12 to move up and down quickly. Although the lower end of the impact rod 12 is flush with the push rod 11 in the initial state, under the push of the convex shaft 14, the impact rod 12 will continue to push the cement block at the end of the push rod 11, thereby improving the pushing efficiency of the push rod 11 and efficiently pushing the cement block outward.
[0033] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.
Claims
1. A drilling device for cement prefabricated product production, comprising a base (1), a guide rod (2), a movable seat (3), a mounting tube (301) and a drill bit (7), wherein the guide rod (2) is fixedly connected to the base (1), the movable seat (3) is slidably connected in the guide rod (2), a mounting tube (301) is provided on one side of the movable seat (3), a central shaft (6) and a drill bit (7) that rotate and mesh with each other are provided in the mounting tube (301), a power source (4) is connected to the other side of the movable seat (3), the power source (4) drives the central shaft (6) through a transmission assembly (5), and the device is characterized in that: The invention also comprises an ejection mechanism which is relatively movable in the drill bit (7), the ejection mechanism comprising a collar (8), a sleeve (10) and a push rod (11), the sleeve (10) being provided with a thread on the outside, and the sleeve (10) being rotatably connected to the mounting tube (301) through the thread, an inner ratchet limit ring (9) being fixedly connected to the bottom of the sleeve (10), the collar (8) being slidably connected to the upper end of the central shaft (6), and the inner ratchet limit ring (9) being sleeved on the collar (8). The collar (8) drives the inner ratchet limit ring (9) to rotate unidirectionally, the push rod (11) is slidably connected in the drill bit (7), and the upper end of the push rod (11) is rotatably connected to the inner ratchet limit ring (9). When the central shaft (6) rotates unidirectionally, it can drive the sleeve (10) to move up and down in the mounting tube (301). The sleeve (10) drives the push rod (11) to move synchronously through the inner ratchet limit ring (9), and the push rod (11) moves relative to the drill bit (7).
2. A drilling device for cement preform production according to claim 1, characterized in that: The inner ring of the inner ratchet limit ring (9) is provided with an oblique ratchet ring, and the outer part of the collar (8) is provided with oblique ratchet teeth (801), and the ratchet teeth (801) and the ratchet ring can mesh with each other.
3. A drilling device for cement prefabricated product production according to claim 2, characterized in that: An axial spline is formed on the outside of the central shaft (6), and the collar (8) is slidably connected to the outside of the central shaft (6) via the spline.
4. A drilling device for cement prefabricated product production according to claim 3, characterized in that: The outside of the sleeve (10) is provided with a closed reciprocating thread (1001).
5. A drilling device for cement prefabricated product production according to claim 4, characterized in that: The invention also includes a vibration mechanism located in the push rod (11) and providing an impact force. The vibration mechanism is composed of an impact rod (12), a return spring (13) and a convex shaft (14). The impact rod (12) is slidably connected in the push rod (11). A return spring (13) is connected between the impact rod (12) and the push rod (11). A sliding ring (1201) is fixedly connected to the upper end of the impact rod (12). The sliding ring (1201) is sleeved on the outside of the sleeve ring (8). An oblique contact surface (1202) is formed on the sliding ring (1201). The bottom of the inner ratchet limit ring (9) is evenly fixedly connected with the convex shaft (14). The convex shaft (14) can contact and push the oblique contact surface (1202).
6. A drilling device for cement prefabricated product production according to claim 5, characterized in that: The invention also comprises a speed reduction wheel set (15) and a control screw rod (16) for controlling the uniform movement of the moving seat (3); the control screw rod (16) is rotatably connected to the base (1); the control screw rod (16) is connected to the moving seat (3) via a thread; the central shaft (6) drives the control screw rod (16) to rotate via the speed reduction wheel set (15); and the speed reduction wheel set (15) is arranged in the moving seat (3).
7. A drilling device for cement preform production according to claim 6, characterized in that: It also includes a fixing bolt (17), which is connected to the base (1).
8. A drilling device for cement prefabricated product production according to claim 7, characterized in that: The fixing bolt (17) is composed of a first nut (1701), a first screw rod (1702), a second nut (1703), a second screw rod (1704), a cone block (1705) and an expansion block (1706). The first screw rod (1702) is hollow, and a radially movable expansion block (1706) is arranged at the bottom of the first screw rod (1702). The first nut (1701) is connected to the base (1) and is connected to the first screw rod (1702) by a thread. The second screw rod (1704) is slidably connected to the first screw rod (1702). The second nut (1703) is rotatably connected to the end of the first screw rod (1702) and is connected to the second screw rod (1704) by a thread. The lower end of the second screw rod (1704) is connected to the cone block (1705), and the cone block (1705) can push the expansion block (1706).