A hollow curbstone manufacturing device

Abstract

The utility model relates to the technical fields of curbstone production, particularly relate to a hollow curbstone manufacturing device. It can be quantitative to material injection, reduce material overflow risk, reduce material waste including hollow curbstone mould, be used for conveying hollow curbstone mould's belt conveyor and install quantitative injection mechanism on belt conveyor, hollow curbstone mould includes plastic outer mould, plastic inner mould and screw button, and plastic outer mould and plastic inner mould are detachably connected through screw button, quantitative injection mechanism includes gantry, slide on the gantry and be installed on the slide, fixedly install material box on the slide, the feed pipe that communicates with the bottom in material box, install the discharge pipe in material box bottom and communicate with material box inside and multiple feed nozzles, install lifting drive on the gantry and provide power for the up-and-down movement of slide, install piston plate that slides up and down in material box, install drive cylinder on material box and provide power for the up-and-down movement of piston plate.

Description

Technical Field

[0001] This utility model relates to the technical field of curbstone production, and in particular to a hollow curbstone manufacturing device. Background Technology

[0002] Curbstones, also known as curb stones or curb stones, are marker stones placed between the road surface and other structures. To reduce the amount of material used in curbstones, some curbstones are made with a hollow structure.

[0003] For example, the invention patent application with publication number CN 115972375A discloses an assembled ribbed hollow curbstone mold and its application method, including a plastic outer mold, a plastic inner mold, and a screw fastener. It also specifically discloses: aligning the discharge port of the unloading device with the gap between the inner and outer molds of each curbstone; opening the discharge port of the mixer and pouring the freshly mixed concrete into the unloading device; opening the valve of the unloading device to allow the freshly mixed concrete to be poured into the curbstone mold along the discharge port; after all molds have been poured, i.e., the freshly mixed concrete fills the curbstone mold, starting the conveyor belt to move the mold to the vibrating table and vibrate continuously for 2 minutes; that is, how to manufacture hollow curbstones using molds.

[0004] However, when using the above molds and methods to manufacture hollow curb stones, it is not easy to control the amount of material injected into the mold, which can cause material to overflow, resulting in waste and pollution to the conveyor belt and other parts. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a hollow curbstone manufacturing device that can quantitatively inject materials, reduce the risk of material spillage, and minimize material waste.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hollow curbstone manufacturing device, comprising a hollow curbstone mold, a belt conveyor for conveying the hollow curbstone mold, and a quantitative injection mechanism installed on the belt conveyor. The hollow curbstone mold includes a plastic outer mold, a plastic inner mold, and a snap fastener. The plastic outer mold and the plastic inner mold are detachably connected by the snap fastener. The quantitative injection mechanism includes a gantry frame, a slide mounted vertically on the gantry frame, a material box fixedly mounted on the slide, a feed pipe communicating with the bottom of the material box, a discharge pipe installed at the bottom of the material box and communicating with the inside of the material box, and multiple feeding nozzles. A lifting drive is installed on the gantry frame to provide power for the vertical movement of the slide. A piston plate is mounted vertically on the material box. A drive cylinder is installed on the material box to provide power for the vertical movement of the piston plate. A first switching valve is installed on the feed pipe, and a second switching valve is installed on the discharge pipe. A feed port that fits with the feeding nozzles is left between the plastic outer mold and the plastic inner mold. Furthermore, the structural principle of the hollow curbstone mold is specifically referred to in CN115972375A for the assembly mold of ribbed hollow curbstone, which will not be described in further detail here; the lifting drive is preferably a mechanical slide, but other equivalent drives such as telescopic cylinders that can drive the slide to slide up and down can also be used; furthermore, the output end of the drive cylinder is fixedly connected to the piston plate, and the drive cylinder is preferably an electric cylinder, but pneumatic cylinders or hydraulic cylinders can also be used; the material suction volume in the material box is the same as the cavity volume between the plastic outer mold and the plastic inner mold.

[0007] Preferably, the belt conveyor is provided with multiple evenly spaced partition plates, the spacing between two adjacent partition plates being the same as the width of the plastic outer mold. The outer wall of the plastic outer mold is provided with multiple vertically arranged reinforcing ribs, and the partition plates are provided with limiting slots corresponding to the reinforcing ribs, with the reinforcing ribs inserted into the corresponding limiting slots. Furthermore, the partition plates are fixedly installed on the conveyor belt of the belt conveyor.

[0008] Preferably, the material bin is equipped with a screwing mechanism that provides power for the rotation of the buckle. The screwing mechanism includes a motor fixedly mounted on the material bin, a drive rod fixedly mounted on the output end of the motor, and a knob mounted on the end of the drive rod. The knob has a slot that engages with the buckle. Furthermore, the motor is a stepper motor to rotate the knob at a fixed angle.

[0009] Preferably, the device further includes multiple connecting springs and connecting plates fixedly connected to each feed nozzle. The connecting plates are elastically connected to the material box via the connecting springs. A drive disk is fixedly mounted on the drive rod of at least one screwing mechanism. Multiple circumferentially distributed ball bearings are rotatably mounted on the outer wall of the drive disk. The outer wall of the connecting plate is tangent to the outer wall of the drive disk. Further, one end of the connecting spring is fixedly connected to the bottom of the material box, and the other end is fixedly connected to the connecting plate. The discharge pipe is a flexible, plastic tube, such as a steel wire mesh reinforced plastic composite tube, to allow the feed nozzles to vibrate with the connecting plate. The radius of the ball bearings is 2-5 mm. The stepper motor drives the drive rod to rotate at an angle of 90 / N, where N = 3, 4, 5, or 6, to ensure the rotation frequency of the drive disk. The stepper motor uses a commercially available product, and its structure and control principle will not be further described here.

[0010] Preferably, the upper part of the limiting slot is provided with a V-shaped opening.

[0011] Preferably, a position switch is installed on the belt conveyor near the gantry. Furthermore, the position switch is connected to the belt conveyor via an external control system. The position switch is a conventional infrared sensor switch available on the market; its specific structure and principle can be based on existing technology and will not be elaborated further here.

[0012] Preferably, it also includes a V-shaped feed trough, wherein the input end of the feed pipe extends into the V-shaped feed trough.

[0013] Compared with the prior art, this utility model provides a hollow curbstone manufacturing device with the following beneficial effects: In this hollow curbstone manufacturing device, the input end of the feed pipe is immersed below the surface of the cement mortar material to be supplied. The first switch valve is opened and the second switch valve is closed. The drive cylinder drives the piston plate to move upward from the bottom of the material box to the upper limit position of the material box. The cement mortar material enters the material box through the feed pipe. The belt conveyor transports the assembled plastic outer mold and plastic inner mold to the lower part of the material box. The lifting drive drives the slide to move downward. The feeding nozzle enters from the feed port. The first switch valve is closed and the second switch valve is opened. The drive cylinder drives the piston plate to move downward. The material in the material box enters the cavity between the plastic outer mold and plastic inner mold through the discharge pipe and the feeding nozzle. During the injection process, the lifting drive drives the slide to move upward synchronously, so that the cement mortar material gradually moves upward from the bottom of the cavity. In this way, the material is injected quantitatively, reducing the risk of material spillage and reducing material waste. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a top view schematic diagram of the structure of this utility model; Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 This is the utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle; Figure 5 This is the utility model Figure 3 A magnified schematic diagram of the structure at point C in the middle; The attached diagram is labeled as follows: 1. Belt conveyor; 2. Plastic outer mold; 3. Plastic inner mold; 4. Fastener; 5. Gantry frame; 6. Slide carriage; 7. Material box; 8. Feed pipe; 9. Discharge pipe; 10. Feed nozzle; 11. Lifting driver; 12. Piston plate; 13. Drive cylinder; 14. First switching valve; 15. Second switching valve; 16. Spacer plate; 17. Reinforcing rib; 18. Limiting slot; 19. Motor; 20. Drive rod; 21. Knob; 22. Slot; 23. Connecting spring; 24. Connecting plate; 25. Drive disc; 26. Ball bearing; 27. V-shaped opening; 28. Position switch; 29. ​​V-shaped material trough. Detailed Implementation To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0015] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] Example 1 Please refer to Figures 1-5A hollow curbstone manufacturing apparatus specifically includes: a hollow curbstone mold, a belt conveyor 1 for conveying the hollow curbstone mold, and a quantitative injection mechanism installed on the belt conveyor 1. The hollow curbstone mold includes a plastic outer mold 2, a plastic inner mold 3, and a snap fastener 4. The plastic outer mold 2 and the plastic inner mold 3 are detachably connected by the snap fastener 4. The quantitative injection mechanism includes a gantry frame 5, a slide 6 that slides vertically on the gantry frame 5, a material box 7 that is fixedly installed on the slide 6, and a feeder that communicates with the bottom of the material box 7. The system includes a pipe 8, a discharge pipe 9 installed at the bottom of the material box 7 and connected to the inside of the material box 7, and multiple feeding nozzles 10. A lifting drive 11 is installed on the gantry frame 5 to provide power for the up and down movement of the slide 6. A piston plate 12 is installed inside the material box 7 and slides up and down. A drive cylinder 13 is installed on the material box 7 to provide power for the up and down movement of the piston plate 12. A first switching valve 14 is installed on the feed pipe 8, and a second switching valve 15 is installed on the discharge pipe 9. A feed port that fits with the feeding nozzles 10 is left between the plastic outer mold 2 and the plastic inner mold 3. Furthermore, the structural principle of the hollow curbstone mold is specifically referred to in CN 115972375A for the assembly mold of ribbed hollow curbstone, which will not be described in further detail here; the lifting drive 11 is preferably a mechanical slide, but other equivalent drives such as telescopic cylinders that can drive the slide 6 to slide up and down can also be used; furthermore, the output end of the drive cylinder 13 is fixedly connected to the piston plate 12, and the drive cylinder 13 is preferably an electric cylinder, but pneumatic cylinders or hydraulic cylinders can also be used; the suction volume in the material box 7 is the same as the cavity volume between the plastic outer mold 2 and the plastic inner mold 3; the discharge end of the discharge pipe 9 is connected to the inlet end of the feeding nozzle 10.

[0018] For details, please refer to Figure 1 The belt conveyor 1 is equipped with multiple evenly spaced partition plates 16. The distance between two adjacent partition plates 16 is the same as the width of the plastic outer mold 2. Multiple vertically arranged reinforcing ribs 17 are provided on the outer wall of the plastic outer mold 2. Each partition plate 16 has a corresponding limiting groove 18, into which the reinforcing ribs 17 are inserted. Furthermore, the partition plates 16 are fixedly installed on the conveyor belt of the belt conveyor 1; the reinforcing ribs 17 can improve the structural strength of the plastic outer mold 2.

[0019] For details, please refer to Figure 4 The upper part of the limiting slot 18 is provided with a V-shaped opening 27.

[0020] For details, please refer to Figure 4 An arrival switch 28 is installed on the belt conveyor 1 near the gantry 5. Furthermore, the arrival switch 28 is connected to the belt conveyor 1 via an external control system. The arrival switch 28 is a conventional infrared sensor switch available on the market, and its specific structure and principle can be achieved using existing technology, so it will not be described in detail here.

[0021] For details, please refer to Figure 1 It also includes a V-shaped feed trough 29, with the input end of the feed pipe 8 extending into the V-shaped feed trough 29.

[0022] The hollow curbstone manufacturing device provided in this embodiment places the plastic outer mold 2 between two adjacent partition plates 16, and inserts the reinforcing ribs 17 on the plastic outer mold 2 into the limiting slots 18, thereby limiting the plastic outer mold 2 and preventing it from moving or tipping over during the conveyor belt 1. The V-shaped opening 27 can improve the smoothness of the reinforcing ribs being inserted into the limiting slots 18. The position switch 28 can detect the plastic outer mold 2. When the plastic outer mold 2 arrives, the position switch 28 senses and controls the conveyor belt 1 to stop in time. The V-shaped material trough 29 is used for storing cement mortar materials so that the operator can replenish the materials in time. When feeding materials into the material box 7, the input end of the feed pipe 8 is always immersed below the liquid level of the material in the V-shaped material trough 29. It should be noted that the material should be fine-particle cement mortar material or other liquid materials.

[0023] Example 2 The hollow curbstone manufacturing apparatus provided in Example 1 has been further optimized. For details, please refer to [link / reference needed]. Figure 4 The material bin 7 is equipped with a screwing mechanism that provides power for the rotation of the buckle 4. The screwing mechanism includes a motor 19 fixedly mounted on the material bin 7, a drive rod 20 fixedly mounted on the output end of the motor 19, and a knob 21 mounted on the end of the drive rod 20. The knob 21 has a slot 22 that engages with the buckle 4. Furthermore, the motor 19 is a stepper motor to rotate the knob 21 at a fixed angle. It should be noted that, initially, the slot 22 and the buckle 4 are parallel to each other so that the buckle 4 can be smoothly inserted into the slot 22.

[0024] For details, please refer to Figures 3-4It also includes multiple connecting springs 23 and connecting plates 24 fixedly connected to each feed nozzle 10. The connecting plates 24 are elastically connected to the material box 7 through the connecting springs 23. A drive disk 25 is fixedly installed on the drive rod 20 of at least one screwing mechanism. Multiple circumferentially distributed ball bearings 26 are rotatably installed on the outer wall of the drive disk 25. The outer wall of the connecting plate 24 is tangent to the outer wall of the drive disk 25. Furthermore, one end of the connecting spring 23 is fixedly connected to the bottom of the material box 7, and the other end of the connecting spring 23 is fixedly connected to the connecting plate 24. The discharge pipe 9 adopts a flexible plastic pipe, such as a steel wire mesh skeleton plastic composite pipe, to allow the feeding nozzle 10 to vibrate with the connecting plate 24. The radius of the ball bearing 26 is 2-5mm to avoid excessive amplitude of the feeding nozzle 10. The stepper motor 19 drives the drive rod 20 to rotate at an angle of 90 / N, where N=3, 4, 5 or 6, to ensure the rotation frequency of the drive disk 25. The stepper motor 19 adopts a conventional known product on the market, and its structure and control principle will not be further described here. The connecting spring 23 adopts a steel spring with a certain rigidity to ensure that each feeding nozzle 10 does not move on its own when there is no external force.

[0025] When the material box 7 moves down, the buckle 4 is inserted into the slot 22 on the knob 21. The motor 19 drives the drive rod 20 and the knob 21 to rotate 90 degrees, so that the buckle 4 locks the plastic outer mold 2 and the plastic inner mold 3, thereby reducing the amount of manual operation. When injecting material between the plastic outer mold 2 and the plastic inner wall, after the knob 21 is higher than the buckle 4, the motor 19 drives the drive rod 20 and the drive disk 25 to rotate. The ball 26 on the drive disk 25 frequently contacts and disengages from the connecting plate 24. The connecting plate 24 drives each feeding nozzle 10 to vibrate. During the vibration, the material between the plastic outer mold 2 and the plastic inner mold 3 is filled and settled to improve the density of the material. The connecting spring 23 allows the connecting plate 24 to vibrate. At the same time, under the action of vibration, the material in the discharge pipe 9 and the feeding nozzle 10 can be smoothly discharged, reducing the material residue in the feeding nozzle 10 and the discharge pipe 9, and preventing residual material from dripping onto the belt conveyor 1.

[0026] The process of using the hollow curbstone manufacturing device provided by this utility model is as follows: The outer plastic mold 2 is placed between two adjacent partition plates 16 on the belt conveyor 1. Reinforcing ribs 17 are inserted into the limiting slots 18. The inner plastic mold 3 is placed inside the outer plastic mold 2. A buckle 4 passes through the through-hole on the inner plastic mold 3. The belt conveyor 1 moves the outer plastic mold 2 to below the material box 7. After the position switch 28 senses the outer plastic mold 2, the belt conveyor 1 is stopped by the external control system. The lifting drive... Device 11 drives the slide 6 to move down until the buckle 4 is inserted into the slot 22 on the knob 21. Motor 19 drives the drive rod 20 and the knob 21 to rotate. After the buckle 4 rotates 90 degrees, it locks the inner plastic mold 3 and the outer plastic mold 2 (the rotation angle of the knob 21 is controlled by an external control system). At this time, the feed nozzle 10 is inserted into the feed port; the input end of the feed pipe 8 is immersed below the liquid level of the cement mortar material in the V-shaped material trough 29, the first switch valve 14 is opened, the second switch valve 15 is closed, and the drive cylinder 13 drives... The piston plate 12 moves upward from the bottom of the material box 7 to its upper limit position. Cement mortar material enters the material box 7 through the feed pipe 8. The belt conveyor 1 transports the assembled plastic outer mold 2 and plastic inner mold 3 to the lower part of the material box 7. The lifting drive 11 drives the slide 6 to move downward. The feed nozzle 10 enters from the feed port. The first switch valve 14 is closed and the second switch valve 15 is opened. The drive cylinder 13 drives the piston plate 12 to move downward. The material in the material box 7 enters the plastic outer mold 2 and plastic inner mold 3 through the discharge pipe 9 and the feed nozzle 10. During the injection process, the lifting drive 11 drives the slide 6 to move upward synchronously in the cavity between the inner mold 3 and the inner mold 3, so that the cement mortar material gradually moves upward from the bottom of the cavity. At the same time, the motor 19 drives the shaft and drive disc 25 to rotate, and the ball bearing 26 frequently contacts and separates from the connecting plate 24, so that the feeding nozzle 10 is in a state of vibration. Under the action of vibration, the material is compacted and settled. After the injection is completed, the bottom of the feeding nozzle 10 is higher than the top of the wall of the plastic inner mold 3. The plastic outer mold 2 is then conveyed by the belt conveyor 1 and discharged.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A hollow curbstone manufacturing device, characterized in that, The device includes a hollow curbstone mold, a belt conveyor (1) for conveying the hollow curbstone mold, and a quantitative injection mechanism installed on the belt conveyor (1). The hollow curbstone mold includes a plastic outer mold (2), a plastic inner mold (3), and a screw fastener (4). The plastic outer mold (2) and the plastic inner mold (3) are detachably connected by the screw fastener (4). The quantitative injection mechanism includes a gantry frame (5), a slide frame (6) slidably installed on the gantry frame (5), a material box (7) fixedly installed on the slide frame (6), a feed pipe (8) communicating with the bottom of the material box (7), and a feed tube installed at the bottom of the material box (7) and connected to the feed tube. The box (7) is connected to the discharge pipe (9) and multiple feeding nozzles (10). The gantry (5) is equipped with a lifting drive (11) that provides power for the slide (6) to move up and down. The material box (7) is equipped with a piston plate (12) that slides up and down. The material box (7) is equipped with a drive cylinder (13) that provides power for the piston plate (12) to slide up and down. The feed pipe (8) is equipped with a first switching valve (14). The discharge pipe (9) is equipped with a second switching valve (15). The plastic outer mold (2) and the plastic inner mold (3) have a feeding port that fits with the feeding nozzle (10).

2. The hollow curbstone manufacturing device according to claim 1, characterized in that, The belt conveyor (1) is provided with multiple equally spaced partition plates (16), the distance between two adjacent partition plates (16) is the same as the width of the plastic outer mold (2), the outer wall of the plastic outer mold (2) is provided with multiple vertically arranged reinforcing ribs (17), the partition plate (16) is provided with limiting slots (18) corresponding to the reinforcing ribs (17), and the reinforcing ribs (17) are inserted into the corresponding limiting slots (18).

3. The hollow curbstone manufacturing apparatus according to claim 2, characterized in that, The material box (7) is equipped with a screwing mechanism that provides power for the rotation of the buckle (4). The screwing mechanism includes a motor (19) fixedly installed on the material box (7), a drive rod (20) fixedly installed on the output end of the motor (19), and a knob (21) installed on the end of the drive rod (20). The knob (21) is provided with a slot (22) that fits into the buckle (4).

4. The hollow curbstone manufacturing apparatus according to claim 3, characterized in that, It also includes multiple connecting springs (23) and connecting plates (24) fixedly connected to each feed nozzle (10). The connecting plates (24) are elastically connected to the material box (7) through the connecting springs (23). A drive disk (25) is fixedly installed on the drive rod (20) of at least one screwing mechanism. Multiple circumferentially distributed ball bearings (26) are rotatably installed on the outer wall of the drive disk (25). The outer wall of the connecting plate (24) is tangent to the outer wall of the drive disk (25).

5. The hollow curbstone manufacturing apparatus according to claim 2, characterized in that, The upper part of the limiting slot (18) is provided with a V-shaped opening (27).

6. The hollow curbstone manufacturing apparatus according to claim 1 or 4, characterized in that, An arrival switch (28) is installed on the belt conveyor (1) near the gantry (5).

7. The hollow curbstone manufacturing apparatus according to claim 6, characterized in that, It also includes a V-shaped feed trough (29), into which the input end of the feed pipe (8) extends.

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