Timing alarm device of centerless grinding machine

Abstract

The utility model provides a centerless grinding machine timing alarm device, which relates to the technical field of machining, and comprises a workbench and a power supply, one side of the workbench is provided with an integrated PLC, one side of the upper end of the workbench is provided with a rocker arm limiting plate, and one side of the upper end of the rocker arm limiting plate is fixedly connected with a wear-resistant pad. A proximity sensor is installed on one side of the rocker arm limiting plate, and a digital display time relay, a counter and an alarm are installed on one side of the workbench. The grinding duration is strictly controlled through the digital display time relay, it is guaranteed that all pieces to be ground are ground for the same duration, the stability of the grinding size is guaranteed, the reject ratio is reduced, and the grinding efficiency is improved. The grinding duration is controlled, overtime waste is avoided, time is saved, the production efficiency is improved, a lot of training cost does not need to be input for green hand cultivation, the green hand can be put on duty through simple training, the labor cost is greatly reduced, and grinding wheel service life management and product quantity management can be rapidly carried out through counter management.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a timing alarm device for a centerless grinder. Background Art

[0002] A centerless grinder is a type of grinder that does not require the axis of the workpiece to be positioned for grinding. It is mainly composed of three mechanisms: a grinding wheel, an adjusting wheel, and a workpiece holder. The grinding wheel is actually responsible for grinding, the adjusting wheel controls the rotation of the workpiece and the feed speed of the workpiece, and the workpiece holder supports the workpiece during grinding. These three parts can be coordinated in several ways, but the principles are the same except for stopping grinding.

[0003] In the prior art, for example, Chinese patent CN205614425U discloses a centerless grinder, comprising a frame, a clamping assembly, a grinding assembly and a coolant supply unit, wherein a left cover body and a right cover body are relatively arranged on the frame, the clamping assembly, the grinding assembly and the coolant supply unit are arranged between the left cover body and the right cover body, a gap is formed between the left cover body and the right cover body, a transparent elastic baffle covering the gap is arranged on the left cover body and the right cover body, and fixing parts for fixing the transparent elastic baffle are detachably connected to the left cover body and the right cover body, respectively.

[0004] The plunge-cut grinding of the centerless grinder is a non-automated process. It requires manual placement of the workpiece on the pallet, and then manual control of the feed handwheel to push the workpiece onto the grinding wheel for grinding. The size after grinding is affected by the processing time. If the grinding time exceeds the optimal grinding time, the grinding size is stable, but it wastes time and has low production efficiency. If the grinding time is less than the optimal grinding time, the grinding size is unstable and easily unqualified, and all measurements are required after grinding, resulting in a waste of labor. Training an operator requires a lot of time and product costs, and switching to another product also requires time and products to train until proficiency. Utility Model Content

[0005] In view of this, the utility model provides a centerless grinder which can quickly and accurately control the processing time and thus accurately control the size.

[0006] To this end, the present application provides the following technical solutions: a timing alarm device for a centerless grinder, comprising a workbench and a power supply, an integrated PLC is provided on one side of the workbench, a rocker arm limit plate is provided on one side of the upper end of the workbench, a wear-resistant pad is fixedly connected to one side of the upper end of the rocker arm limit plate, a proximity sensor is installed on one side of the rocker arm limit plate, a digital time relay, a counter and an alarm are installed on one side of the workbench, the output end of the proximity sensor is electrically connected to the input end of the integrated PLC, the output end of the integrated PLC is electrically connected to the input end of the counter and the digital time relay, the output end of the digital time relay is electrically connected to the input end of the alarm, the output end of the power supply is electrically connected to the input end of the integrated PLC and the digital time relay, the upper end of the proximity sensor is slightly lower than the upper end of the wear-resistant pad, the power supply is separately powered by the integrated PLC and the digital time relay, and the alarm includes an alarm light and a buzzer.

[0007] Preferably, a grinding wheel mechanism is fixedly connected to one side of the upper end of the workbench, and a moving seat is slidably connected to the other side of the upper end of the workbench.

[0008] Preferably, a No. 2 driving mechanism is fixedly connected to the other side of the upper end of the workbench, and the No. 2 driving mechanism is transmission-connected to the moving seat.

[0009] Preferably, the upper end of the movable seat is slidably connected with an adjusting grinding wheel mechanism, and one side of the upper end of the movable seat is fixedly connected with a No. 1 driving mechanism, and the No. 1 driving mechanism is transmission-connected with the adjusting grinding wheel mechanism.

[0010] Preferably, an adjusting hand wheel is fixedly connected to one side of the No. 2 driving mechanism, a feed rocker arm is fixedly connected to one side of the No. 1 driving mechanism, and supporting feet are installed at the four corners of the lower end of the workbench.

[0011] Preferably, a slide groove is provided on one side of the upper end of the workbench, a cross rod is slidably connected inside the slide groove, and the upper end of the cross rod is fixedly connected to the rocker arm limit plate.

[0012] Preferably, a fastening screw is threadedly connected to one side of the slide groove.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model strictly controls the grinding time through the digital display time relay, ensuring that each piece to be ground is ground for the same length of time, ensuring the stability of the grinding size, reducing the defect rate, and controlling the grinding time. There is no waste of overtime, saving time and improving production efficiency. There is no need to invest a lot of training costs in training novices, and they can take up their posts after simple training, which greatly reduces labor costs. Through counter management, the grinding wheel life management and product quantity management can be quickly carried out;

[0015] 2. The utility model can adjust the height of the rocker arm limit plate according to the different precision of the workpiece to be processed by setting the slide groove and the cross rod during use. The fastening screw is rotated to squeeze the cross rod to fix the position of the rocker arm limit plate, so that different workpieces can be processed and used. The cross-shaped design of the cross rod increases the connection area of ​​the rocker arm limit plate, increases the support stability, and ensures the stability of the rocker arm limit plate when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a first three-dimensional structural schematic diagram of the timing alarm device for a centerless grinder proposed by the utility model.

[0018] Figure 2 It is a second three-dimensional structural schematic diagram of the timing alarm device for a centerless grinder proposed by the utility model.

[0019] Figure 3 The utility model proposes a timing alarm device for a centerless grinder Figure 1 Schematic diagram of the enlarged structure of area A in the middle.

[0020] Figure 4 The utility model discloses a schematic diagram of the connection structure between a rocker arm limit plate and a workbench in a timing alarm device for a centerless grinder.

[0021] Figure 5 The utility model discloses a circuit diagram of a timing alarm device for a centerless grinder.

[0022] In the figure: 1. Workbench; 2. Grinding wheel mechanism; 3. Grinding wheel adjustment mechanism; 4. Moving seat; 5. No. 1 driving mechanism; 6. Feed rocker arm; 7. No. 2 driving mechanism; 8. Adjusting hand wheel; 9. Integrated PLC; 10. Digital display time relay; 11. Counter; 12. Alarm; 13. Support foot; 14. Rocker arm limit plate; 15. Friction-resistant pad; 16. Proximity sensor; 17. Fastening screw; 18. Cross rod; 19. Slide; 20. Power supply. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Example 1

[0027] like Figure 1-Figure 5 As shown, the utility model provides a timing alarm device for a centerless grinder, comprising a workbench 1 and a power supply 20, an integrated PLC 9 is arranged on one side of the workbench 1, a rocker arm limit plate 14 is arranged on one side of the upper end of the workbench 1, a wear-resistant pad 15 is fixedly connected to one side of the upper end of the rocker arm limit plate 14, a proximity sensor 16 is installed on one side of the rocker arm limit plate 14, a digital display time relay 10, a counter 11 and an alarm 12 are installed on one side of the workbench 1, the output end of the proximity sensor 16 is electrically connected to the input end of the integrated PLC 9, and the output end of the integrated PLC 9 is electrically connected to the counter 11 and The input end of the digital display time relay 10 is electrically connected, the output end of the digital display time relay 10 is electrically connected to the input end of the alarm 12, the output end of the power supply 20 is electrically connected to the input end of the integrated PLC9 and the digital display time relay 10, the upper end of the proximity sensor 16 is slightly lower than the upper end of the friction pad 15, the power supply 20 supplies power to the integrated PLC9 and the digital display time relay 10 separately, the alarm 12 includes an alarm light and a buzzer, the alarm 12 is connected to the load end of the digital display time relay 10, and the response time is set on the digital display time relay 10, accurate to 0.1s.

[0028] The following is a detailed description of the specific settings and functions of this embodiment. The grinding time is strictly controlled by the digital display time relay 10, which ensures that each piece to be ground is ground for the same length of time, ensuring the stability of the grinding size, reducing the defective rate, and controlling the grinding time. There is no waste of overtime, which saves time and improves production efficiency. There is no need to invest a lot of training costs in training novices, and they can take up their posts after simple training, which greatly reduces labor costs. Through the management of the counter 11, the grinding wheel life management and product quantity management can be quickly carried out.

[0029] Example 2

[0030] like Figure 1-Figure 4 As shown, one side of the upper end of the workbench 1 is fixedly connected with a grinding wheel mechanism 2, and the other side of the upper end of the workbench 1 is slidably connected with a moving seat 4, and the other side of the upper end of the workbench 1 is fixedly connected with a No. 2 driving mechanism 7, which is transmission-connected to the moving seat 4, and the upper end of the moving seat 4 is slidably connected with an adjusting grinding wheel mechanism 3, and one side of the upper end of the moving seat 4 is fixedly connected with a No. 1 driving mechanism 5, which is transmission-connected to the adjusting grinding wheel mechanism 3, one side of the No. 2 driving mechanism 7 is fixedly connected with an adjusting hand wheel 8, and one side of the No. 1 driving mechanism 5 is fixedly connected with a feed rocker arm 6, and supporting feet 13 are installed at the four corners of the lower end of the workbench 1, and a slide groove 19 is provided on one side of the upper end of the workbench 1, and a cross rod 18 is slidably connected inside the slide groove 19, and the upper end of the cross rod 18 is fixedly connected to the rocker arm limit plate 14, and a fastening screw 17 is threadedly connected to one side of the slide groove 19.

[0031] The effect achieved by the entire embodiment is that, through the setting of the slide groove 19 and the cross rod 18, the height of the rocker arm limit plate 14 can be adjusted according to the different precision of the workpiece to be processed during use, and the fastening screw 17 is rotated to make the fastening screw 17 squeeze the cross rod 18 to fix the position of the rocker arm limit plate 14, so that different workpieces can be processed and used. Through the cross-shaped design of the cross rod 18, the connection area of ​​the rocker arm limit plate 14 is large, the support stability is increased, and the stability of the rocker arm limit plate 14 during use is ensured.

[0032] The method of use and working principle of this device: Before use, the operator rotates the fastening screw 17 according to the different workpieces to be processed, contact the limit of the cross rod 18, and then adjust the height of the rocker arm limit plate 14, and then rotate the fastening screw 17 to squeeze and fix the cross rod 18, and then rotate the adjustment hand wheel 8 to adjust the position of the movable seat 4. The operator puts the workpiece to be ground into the centerless grinding support plate, holds the feed rocker arm 6 and presses it down at a uniform speed, and stops when it reaches the limit. At this time, the proximity sensor 16 senses that the feed rocker arm 6 has reached the position and sends a signal to the integrated PLC9. After processing by the integrated PLC9, it sends a signal to the counter 11, the count +1, and the digital display time relay 10 sends a signal. The digital display time relay 10 starts timing. When the set time is reached, the digital display time relay 10 controls the alarm 12 to work, and the operator lifts the feed rocker arm 6 to complete the grinding operation.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A timing alarm device for a centerless grinder, comprising a workbench (1) and a power supply (20), characterized in that: An integrated PLC (9) is arranged on one side of the workbench (1), a rocker arm limit plate (14) is arranged on one side of the upper end of the workbench (1), a friction-resistant pad (15) is fixedly connected to one side of the upper end of the rocker arm limit plate (14), a proximity sensor (16) is installed on one side of the rocker arm limit plate (14), a digital display time relay (10), a counter (11) and an alarm (12) are installed on one side of the workbench (1), an output end of the proximity sensor (16) is electrically connected to an input end of the integrated PLC (9), an output end of the integrated PLC (9) is electrically connected to the counter (11) and the input end of the digital display time relay (10), an output end of the digital display time relay (10) is electrically connected to an input end of the alarm (12), and an output end of the power supply (20) is electrically connected to the input end of the integrated PLC (9) and the digital display time relay (10).

2. The timing alarm device for a centerless grinder according to claim 1, characterized in that: One side of the upper end of the workbench (1) is fixedly connected to a grinding wheel mechanism (2), and the other side of the upper end of the workbench (1) is slidably connected to a moving seat (4).

3. The timing alarm device for a centerless grinder according to claim 2, characterized in that: A second driving mechanism (7) is fixedly connected to the other side of the upper end of the workbench (1), and the second driving mechanism (7) is transmission-connected to the moving seat (4).

4. The timing alarm device for a centerless grinder according to claim 3, characterized in that: The upper end of the movable seat (4) is slidably connected to an adjusting grinding wheel mechanism (3), and one side of the upper end of the movable seat (4) is fixedly connected to a first driving mechanism (5), and the first driving mechanism (5) is transmission-connected to the adjusting grinding wheel mechanism (3).

5. The timing alarm device for a centerless grinder according to claim 4, characterized in that: One side of the No. 2 driving mechanism (7) is fixedly connected to an adjusting hand wheel (8), one side of the No. 1 driving mechanism (5) is fixedly connected to a feed rocker arm (6), and four corners of the lower end of the workbench (1) are all equipped with supporting feet (13).

6. The timing alarm device for a centerless grinder according to claim 1, characterized in that: A slide groove (19) is provided on one side of the upper end of the workbench (1), a cross rod (18) is slidably connected inside the slide groove (19), and the upper end of the cross rod (18) is fixedly connected to the rocker arm limit plate (14).

7. The timing alarm device for a centerless grinder according to claim 6, characterized in that: A fastening screw (17) is threadedly connected to one side of the slide groove (19).

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