Fully automatic quantitative rubber cutting production line

Abstract

The present invention provides a fully automatic quantitative rubber cutting production line, which includes a material receiving section, a weighing and conveying section, a packaging buffer section and a main control box. The rubber cutting section includes a rubber cutting conveying device slidably mounted on a rubber cutting machine frame and drivable by a rubber cutting driving mechanism, and a cutting mechanism. The weighing and conveying section includes a weighing and conveying device and a metering mechanism. The rubber cutting conveying device includes a front conveying device and a rear conveying device that form a cut at intervals front and back. The cutting mechanism is installed across the cut. The rubber cutting conveying device is configured to stop its own conveying of the rubber material when the main control box obtains a rubber cutting signal from the metering mechanism and be driven by the rubber cutting driving mechanism to drive the whole cutting mechanism to move towards the weighing and conveying section, and at the same time, the cutting mechanism can complete rubber cutting at the cut during this movement. The present invention does not require manual operation during the production process, which not only greatly improves the production efficiency, but also reduces the safety risk.

Description

Technical Field

[0001] The present invention relates to the technical field of silicone production equipment, and more specifically to a fully automatic quantitative rubber cutting production line. Background Art

[0002] Whether it is a masterbatch manufacturer or a finished rubber refining manufacturer, it is necessary to cut and measure the weight of the masterbatch to meet the process requirements for production, packaging and sales.

[0003] Currently, masterbatch manufacturers or finished rubber refining manufacturers generally use manual rubber cutting and manual weighing methods for processing. The manual rubber cutting operation has problems such as contaminating the rubber material, high labor intensity, and low production efficiency; after long-term operation, the operator holding the knife also has a risk of operation safety and potential safety hazards. Some manufacturers use mechanical equipment for rubber cutting, but they also need to manually adjust the rubber blocks and then manually weigh them after the rubber material cutting is completed. Therefore, the equipment is usually open, and personnel also face high-intensity labor such as handling and safety risks of contacting the knife during the operation process. Summary of the Invention

[0004] To overcome the above defects, it would be beneficial for the present invention to provide a fully automatic quantitative rubber cutting production line that improves production efficiency, reduces labor intensity and eliminates potential safety hazards.

[0005] For this reason, the present invention provides a fully automatic quantitative rubber cutting production line, which includes:

[0006] A feeding section, which includes a feeding frame and a feeding conveying device located on the feeding frame and docked with the outlet of the extruder;

[0007] A rubber cutting section, which includes a rubber cutting frame, a rubber cutting conveying device slidably installed on the rubber cutting frame, a cutting mechanism installed on the rubber cutting conveying device, and a rubber cutting driving mechanism fixed on the rubber cutting frame and drivingly connected to the rubber cutting conveying device;

[0008] A weighing and conveying section, which includes a weighing and conveying frame, a weighing and conveying device located on the weighing and conveying frame, and a metering mechanism;

[0009] A packaging buffer section, which includes a packaging buffer frame and a packaging conveying device located on the packaging buffer frame;

[0010] A main control box, which is electrically connected to the feeding conveying device, the rubber cutting conveying device, the cutting mechanism, the rubber cutting driving mechanism, the weighing and conveying device, the metering mechanism, and the packaging conveying device;

[0011] Among them, the rubber cutting and conveying device includes a front conveying device and a rear conveying device that are spaced apart front and back to form a cutting notch. The cutting mechanism is installed across the cutting notch. The rubber cutting and conveying device is configured such that when the main control box obtains a rubber cutting signal from the metering mechanism, it can stop its own conveying of the rubber material and be driven by the rubber cutting drive mechanism to move the entire cutting mechanism towards the weighing and conveying section. At the same time, the cutting mechanism can complete rubber cutting at the cutting notch during this movement.

[0012] In the present invention, through the setting of the above structure, the rubber material coming out of the extruder can successively pass through the material receiving and conveying device and the rubber cutting and conveying device, reach the weighing and conveying device, and the weight of the rubber material to be cut can be measured by the metering mechanism during the conveying process on the weighing and conveying device. At this time, the rubber cutting and conveying device stops its own conveying of the rubber material, can be driven by the rubber cutting drive mechanism to move the cutting mechanism backward, and perform quantitative cutting with the knife during the movement. The entire production process does not require manual operation, which not only greatly improves the production efficiency but also reduces the safety risk.

[0013] Furthermore, the above-mentioned fully automatic quantitative rubber cutting production line further includes a safety protection device, which includes a material receiving section safety cover installed on the material receiving frame, a rubber cutting section safety cover installed on the rubber cutting frame, a weighing and conveying section safety cover installed on the weighing and conveying frame, and a packaging and buffering section safety cover installed on the packaging and buffering frame.

[0014] Through the setting of the safety covers for each production section, the risk that the staff accidentally touches the cutting mechanism and the like can be avoided.

[0015] Still further, the material receiving section safety cover is a push-pull movable type, and the rubber cutting section safety cover, the weighing and conveying section safety cover, and the packaging and buffering section safety cover are all configured as safety covers that cut off the power supply of the system when opened and are respectively electrically connected to the main control box. And the rubber cutting section safety cover is configured as a side-opening window type, and the weighing and conveying section safety cover and the packaging and buffering section safety cover are both configured as upward-lifting window types.

[0016] Through the above structure setting, it is convenient to access the equipment on the production line in case of maintenance and the like; if the safety covers of the rubber cutting section, the weighing and conveying section, and the packaging and buffering section are wrongly opened during the production process, the main control box can immediately cut off the power supply of the equipment to avoid the risk of injury caused by misoperation, completely eliminating the safety hazards.

[0017] Still further, the cutting mechanism includes a rubber cutting bracket fixed to the rubber cutting and conveying device, a rubber cutting cylinder fixed to the rubber cutting bracket, a cutting tool holder drivingly connected to the rubber cutting cylinder, a pressing material electric cylinder fixed to the rubber cutting bracket, and a pressing material frame drivingly connected to the pressing material electric cylinder. Among them, a cutting tool is installed on the cutting tool holder, and the cutting tool is aligned with the cutting notch of the rubber cutting and conveying device.

[0018] With the above structural arrangement, after the main control box obtains the rubber cutting signal from the metering mechanism, it can start the rubber cutting cylinder and the material pressing electric cylinder, so that the material pressing frame presses the rubber material, and the cutting knife cuts the rubber material at the cutting position.

[0019] Furthermore, the rubber cutting cylinder is installed on the top cross beam of the rubber cutting bracket. The cutting knife holder has an inverted U-shaped structure. The cutting knife is arranged at the lower opening end of the inverted U-shaped structure, and the upper horizontal part of the inverted U-shaped structure is connected to the piston rod of the rubber cutting cylinder. Among them, a pair of guide rods are respectively installed on both sides of the piston rod on the top cross beam of the rubber cutting bracket, and the horizontal part of the inverted U-shaped structure is slidably connected to the pair of guide rods.

[0020] With the above structural arrangement, the cutting knife holder can drive the cutting knife to move up and down stably along the guide rods under the push of the piston rod, thus ensuring the rubber cutting quality.

[0021] Even further, the material pressing electric cylinder is also installed on the top cross beam of the rubber cutting bracket and is drivingly connected to the material pressing frame. A material pressing cross beam is arranged on the material pressing frame, and the material pressing cross beam is arranged parallel to the cutting knife along the conveying direction of the rubber cutting conveying device.

[0022] With the above structural arrangement, the material pressing electric cylinder can drive the material pressing frame up and down, and since the material pressing cross beam is arranged parallel to the cutting knife, the stability of rubber cutting is further increased.

[0023] Even still further, there are two material pressing electric cylinders which are respectively located on the left and right sides of the cutting knife holder. Each of the two material pressing electric cylinders is drivingly connected to a material pressing frame. There are two material pressing cross beams which are arranged in parallel with a space in between, and the cutting knife holder is located between the two material pressing cross beams.

[0024] With the above arrangement of the material pressing structure and the layout of the cutting knife holder, the material pressing during rubber cutting is more stable, further ensuring the neatness of the rubber cutting port.

[0025] Even more further, an upper dead point sensor and a lower dead point sensor for sensing the position of the piston rod of the rubber cutting cylinder are installed on one side of the rubber cutting bracket; material pressing detection sensors are installed on the lower sides of both ends of the material pressing frame, and the material pressing detection sensors are photoelectric sensors.

[0026] With the setting of the upper dead point sensor and the lower dead point sensor, it can be used to indicate the completion or preparation of rubber cutting; with the setting of the photoelectric sensor, it can be used to indicate the material pressing preparation position.

[0027] Further, the weighing and conveying device includes a roller frame, an endless conveyor belt, a driving roller and a driven roller which are installed on the roller frame and are surrounded by the endless conveyor belt; the metering mechanism includes a weight sensor and a length detection photoelectric module. Among them, the weight sensor is installed on the roller frame, and the length detection photoelectric module is installed on the roller frame with adjustable position.

[0028] In this embodiment, the weight sensor monitors the quality of the rubber compound, is interlocked with the rubber cutting section through the main control box, and sends a rubber cutting signal to the rubber cutting conveying device, the cutting mechanism, and the rubber cutting driving mechanism; the length detection photoelectric module monitors the length of the rubber compound, is also interlocked with the rubber cutting section through the main control box, and sends a rubber cutting signal to the rubber cutting conveying device, the cutting mechanism, and the rubber cutting driving mechanism.

[0029] Furthermore, the material receiving conveying device includes a roller frame, an endless conveyor belt, a front passive roller and a rear passive roller which are installed on the roller frame and surrounded by the endless conveyor belt. A rotary encoder for sensing the incoming material speed is installed on the front passive roller, and a first incoming material sensor is installed at one end of the roller frame adjacent to the front conveying device; both the front conveying device and the rear conveying device include a roller frame, an endless conveyor belt, a driving roller and a passive roller which are installed on the roller frame and surrounded by the endless conveyor belt. Among them, a second incoming material sensor is installed at one end of the roller frame of the rear conveying device adjacent to the weighing conveying device.

[0030] The endless conveyor belt of the material receiving conveying device is driven by the rubber compound from the extruder. Since a rotary encoder is installed on the front passive roller, it can accurately measure the extrusion speed of the rubber compound and transmit the data to the main control box, so that the main control box can control the backward pushing speed of the rubber cutting conveying device by the rubber cutting driving mechanism; both the front conveying device and the rear conveying device include a driving roller, so that the rubber compound can be actively conveyed when the driving roller runs, and the rubber compound can be cut when the driving roller stops running.

[0031] Furthermore, both the weighing conveying device and the packaging conveying device include a roller frame, an endless conveyor belt, a driving roller and a passive roller which are installed on the roller frame and surrounded by the endless conveyor belt.

[0032] Furthermore, the material receiving rack and the rubber cutting rack can be integrally formed into a box-type structure bracket, and at least four heavy-duty polyurethane brake casters can be installed at the bottom of the box-type structure bracket; the weighing conveying rack and the packaging buffer rack can also be integrally formed into a box-type structure bracket, and at least four heavy-duty polyurethane brake casters can also be installed at the bottom of the box-type structure bracket.

[0033] These aspects and other aspects of the present invention will be more clearly explained by referring to the embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The structure of the invention and further objects and advantages will be better understood from the following description in conjunction with the drawings, in which the same reference numerals identify the same elements:

[0035] Figure 1 is a schematic structural diagram of a full-automatic quantitative rubber cutting production line according to a specific embodiment of the present invention;

[0036] Figure 2 yes Figure 1 The cutting mechanism of the fully automatic quantitative rubber cutting production line shown is a plan view of the cutting mechanism along the conveying direction of the production line. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0038] like Figure 1 As shown, a fully automatic quantitative rubber cutting production line according to a specific embodiment of the present invention includes a material receiving section, a rubber cutting section, a weighing and conveying section, a packaging buffer section, a main control box and a safety protection device.

[0039] like Figure 1 As shown, the material receiving section includes a material receiving frame 10, a material receiving conveying device located on the material receiving frame 10 and connected to the outlet of the extruder (not shown), wherein the material receiving conveying device includes a roller frame 12, an endless conveyor belt 14, a front passive roller 16 and a rear passive roller 18, and the front passive roller 16 and the rear passive roller 18 are installed on the roller frame 12 and are surrounded by the endless conveyor belt 14. In this embodiment, Figure 1 As shown, the front passive roller 14 serves as a material receiving roller, on which a rotary encoder 15 for sensing the speed of incoming materials is installed, and a first incoming material sensor 13 is installed at one end of the roller frame 12 adjacent to the rubber cutting section.

[0040] like Figure 1 As shown, the rubber cutting section includes a rubber cutting machine frame 20, a rubber cutting conveying device including a front conveying device and a rear conveying device, a cutting mechanism 26, and a rubber cutting driving mechanism. The front conveying device and the rear conveying device are arranged in a front-to-back manner and form a cut 21 therebetween, and the cutting mechanism 26 is installed across the cut 21. In this embodiment, as shown in FIG. Figure 1 As shown, the front conveying device includes a roller frame 222, an endless conveyor belt 224, a driving roller 226 and a passive roller 228 mounted on the roller frame 222 and surrounded by the endless conveyor belt 224; the rear conveying device includes a roller frame 242, an endless conveyor belt 244, a driving roller 246 and a passive roller 248 mounted on the roller frame 242 and surrounded by the endless conveyor belt 244, wherein the roller frame 222 and the roller frame 242 are slidably mounted on the rubber cutting machine frame 20 by means of a slide rail (not shown). In addition, in this embodiment, a second incoming material sensor 23 is installed at one end of the roller frame 242 of the rear conveying device adjacent to the weighing conveying section.

[0041] like Figure 2 Shown and referenced Figure 1, the cutting mechanism 26 includes a rubber cutting bracket 260, which is fixed together with the rubber cutting conveying device and can move on the rubber cutting machine frame 20 by means of the above-mentioned slide rails. A rubber cutting cylinder 262 is fixed on the top cross beam 261 of the rubber cutting bracket 260. The piston rod 263 of the rubber cutting cylinder 262 is drivingly connected to a cutting tool holder 264 with an inverted U-shaped structure. A cutting wire 265 is provided at the lower opening end of the inverted U-shaped cutting tool holder 264 as a cutting tool, and this cutting wire is aligned with the cut 21 of the rubber cutting conveying device. As Figure 2 shown, the piston rod 263 is connected to the upper horizontal part 267 of the inverted U-shaped cutting tool holder 264. It should be noted that in this embodiment, a pair of guide rods (not shown in the figure) are preferably further installed on the top cross beam 261 of the rubber cutting bracket 260, respectively located on both sides of the piston rod 263. These two guide rods are slidably connected to the upper horizontal part 267 of the inverted U-shaped cutting tool holder 264, so as to stably guide the up and down movement of the cutting tool holder 264.

[0042] As Figure 2 shown and referring to Figure 1 , in this embodiment, the cutting mechanism 26 further includes a pressing cylinder 27 fixed to the rubber cutting bracket 260 through a fixed side plate 25, and a pressing frame 29 drivingly connected to the pressing cylinder 27. Of course, in another embodiment, the pressing cylinder 27 can also be directly installed on the top cross beam 261 of the rubber cutting bracket 260. In this embodiment, a pressing cross beam 290 is provided on the pressing frame 29, and this pressing cross beam 290 is arranged parallel to the cutting wire 265 along the rubber material conveying direction. From Figure 2 it can be clearly seen that in this embodiment, two pressing cylinders 27 are arranged, respectively located on the left and right sides of the cutting tool holder 264. These two pressing cylinders 27 are respectively drivingly connected to the left and right pressing frames 29. Two pressing cross beams 290 are also arranged, and they are arranged at intervals, so that the cutting tool holder 264 is located between the two pressing cross beams 290. It should be noted that in order to show the pressing cylinder 27 in Figure 1 , the position of the pressing cylinder 27 is offset from one side of the rubber cutting cylinder 262, and its actual position in this embodiment is subject to Figure 2 .

[0043] Again, as Figure 1 shown and referring to Figure 2 , in this embodiment, an upper dead point sensor 266 and a lower dead point sensor 268 for sensing the position of the piston rod 263 of the rubber cutting cylinder 262 are installed on one side of the rubber cutting bracket 260; pressing detection sensors 292 are installed on the lower sides of both ends of the pressing frame 29, and these pressing detection sensors 292 are photoelectric sensors.

[0044] As Figure 1As shown, in this embodiment, the rubber cutting drive mechanism includes a rubber cutting motor (not shown in the figure) and a rubber cutting drive electric cylinder 280 installed on the rubber cutting machine frame 20. Among them, the rubber cutting drive electric cylinder 280 is drivingly connected to a slide rail that is respectively connected to the rubber cutting conveying device and the cutting mechanism 26.

[0045] As Figure 1 shown, the weighing and conveying section includes a weighing and conveying machine frame 30, a weighing and conveying device located on the weighing and conveying machine frame 30, and a metering mechanism. In this embodiment, the weighing and conveying device includes a roller frame 32, an endless conveyor belt 34, a driving roller 36 and a driven roller 38 that are installed on the roller frame 32 and surrounded by the endless conveyor belt 34; the metering mechanism includes a weight sensor 31 and a length detection photoelectric module 33. The weight sensor 31 is installed on the roller frame 32. The length detection photoelectric module 33 includes a slide table type electric cylinder 330 and a photoelectric sensor assembly driven by the slide table type electric cylinder 330. The slide table type electric cylinder 330 is installed on the weighing and conveying machine frame 30, and the photoelectric sensor assembly is provided with a first photoelectric sensor 35, an intermediate photoelectric sensor 37 and a last photoelectric sensor 39. In this embodiment, the slide table type electric cylinder 330 includes a servo motor, a linear electric cylinder, a guide rail, and a slider (not shown in the figure), and the slider drives the photoelectric sensing assembly to move back and forth along the guide rail, thereby realizing the adjustment of the position of the length detection photoelectric module 33.

[0046] It should be noted that, in this embodiment, a weighing incoming material sensor 312 and a reweighing sensor 314 are also provided on the weighing and conveying section to sense the incoming material signal.

[0047] As Figure 1 shown, the packaging buffer section includes a packaging buffer machine frame 40 and a packaging conveying device located on the packaging buffer machine frame 40. In this embodiment, the packaging conveying device includes a roller frame 42, an endless conveyor belt 44, a driving roller 46 and a driven roller 48 that are installed on the roller frame 42 and surrounded by the endless conveyor belt 44.

[0048] It should be understood that in this embodiment, all driving rollers need to be equipped with driving motors to drive them. These driving motors can be installed on the corresponding machine frames and controlled to start and stop by the main control box. When these driving rollers are started or stopped, the endless conveyor belts they drive are started or stopped.

[0049] As Figure 1As shown in the figure, the full-automatic quantitative rubber cutting production line of this embodiment further includes a safety protection device, which includes a receiving section safety cover 51 installed on the receiving frame 10, a rubber cutting section safety cover 52 installed on the rubber cutting frame 20, a weighing and conveying section safety cover 53 installed on the weighing and conveying frame 30, and a packaging buffer section safety cover 54 installed on the packaging buffer frame 40. In this embodiment, the receiving section safety cover 51 is a push-pull movable type; the rubber cutting section safety cover 52, the weighing and conveying section safety cover 53, and the packaging buffer section safety cover 54 are all configured as safety covers that cut off the power supply when opened, and are respectively electrically connected to the main control box; the rubber cutting section safety cover 52 can be configured as a side-opening window type, and the weighing and conveying section safety cover 53 and the packaging buffer section safety cover 54 can both be configured as an up-lifting window type.

[0050] As Figure 1 shown, in this embodiment, the main control box includes a programmable logic controller PLC1 and a programmable logic controller PLC2. The programmable logic controller PLC1 is electrically connected to the rotary encoder 15 on the passive roller 16 in front of the receiving and conveying device, the first incoming material sensor 13 in the receiving section, the driving rollers 226 and 228 of the rubber cutting and conveying device, the second incoming material sensor 23 in the rubber cutting section, the rubber cutting cylinder 262 on the cutting mechanism 26, the pressure sensor 27, the upper dead point sensor 266, the lower dead point sensor 268, the pressure detection sensor 292, the rubber cutting motor and the rubber cutting driving electric cylinder 280 of the rubber cutting driving mechanism, the rubber cutting section safety cover 52, and other parts that require electrical signals; the programmable logic controller PLC2 is electrically connected to the driving roller 36 of the weighing and conveying device, the weighing incoming material sensor 312, the reweighing sensor 314, the weight sensor 31 and the length detection photoelectric module 33 of the metering mechanism, the driving roller 46 of the packaging and conveying device, and the weighing and conveying section safety cover 53 and the packaging buffer section safety cover 54, and other parts that require electrical signals. Of course, it should be understood that the programmable logic controller PLC1 and the programmable logic controller PLC2 of the main control box are also electrically connected to communicate with each other.

[0051] In addition, it should be noted that the receiving frame 10 and the rubber cutting frame 20 can be integrally configured as a box-type structure bracket, and at least four heavy-duty polyurethane brake casters 6 can be installed at the bottom of the box-type structure bracket; the weighing and conveying frame 30 and the packaging buffer frame 40 can also be integrally configured as a box-type structure bracket, and at least four heavy-duty polyurethane brake casters 6 can also be installed at the bottom of the box-type structure bracket.

[0052] Next, refer to Figure 1 and Figure 2 to introduce the working process of the present invention:

[0053] I. Preparation work:

[0054] Turn on the power of the main control box, and input the weight to be cut, i.e., the predetermined weight value, and the cutting method (including the weight feedback cutting method and the length feedback cutting method) on the touch screen of the main control box. At this time, the cutting mechanism 26 and the cutting section conveying mechanism are in their initial positions; the material pressing electric cylinder is also in its initial position; the cutting cylinder 262 is in the upper dead center position; the length detection photoelectric module 33 is in its initial position.

[0055] II. Working process of the first cutting method: Select the weight feedback cutting method

[0056] 1. Start the extruder;

[0057] 2. The rubber material 7 is extruded from the outlet of the extruder, driving the front passive roller 16 of the receiving section to rotate, driving the rotary encoder 15 on it to rotate, and the signal is fed back to the programmable logic controller PLC1 of the main control box to obtain an extrusion speed V1.

[0058] 3. The rubber material 7 continues to move backward. The first incoming material sensor 13 gets a signal, and sends the start signal through the programmable logic controller PLC1 and the programmable logic controller PLC2 to the driving roller 226 and the driving roller 246 of the cutting section, the driving roller 36 of the weighing conveying section, and the driving roller 46 of the packaging buffer section. They can all receive the speed signal of the rotary encoder 15, so these four driving rollers start to run and the speed is all V1;

[0059] 4. When the rubber material 7 moves to the position of the second incoming material sensor 23, it sends the incoming material signal to the material pressing electric cylinder 27 of the cutting mechanism 26. The material pressing electric cylinder 27 moves downward. When the material pressing detection sensor 292 detects the rubber material (for example, it can detect the rubber material when it is about 2 cm away from the rubber material), the material pressing electric cylinder 27 stops moving downward; preferably, it can be set that if the weighing incoming material sensor 312 does not sense a signal after 20S (the time can be set according to the specific situation), the equipment will alarm;

[0060] 5. The rubber material 7 is continuously conveyed backward. The weighing incoming material sensor 312 senses a signal, indicating that the rubber material 7 has entered the weighing conveying section normally; after the weighing incoming material sensor 312 senses a signal, the driving rollers 226 and 246 of the cutting section both stop running. At the same time, the cutting driving electric cylinder 280 drives the cutting conveying device and the cutting mechanism 26 to move backward together, that is, move towards the weighing conveying section, and the speed is the same as the moving speed of the rubber material, which is V1;

[0061] 6. When the real-time weight value measured by the weight sensor 31 matches the predetermined weight value (real-time weight value + predetermined advance = predetermined weight value), the rubber cutting cylinder 262 pushes the cutting wire 265 downward to cut the rubber material 7. After the rubber material 7 is cut, when the rubber cutting cylinder 262 runs to the bottom dead center position, the bottom dead center sensor 268 senses the signal, and the driving roller 36 of the weighing and conveying section accelerates to run at a speed of twice V1, that is, 2V1. The purpose of accelerating is to separate the cut rubber material from the original rubber material and perform the next operation. After the bottom dead center sensor 268 senses the signal, the driving rollers 226 and 246 of the rubber cutting section both run at 3 times V1, that is, 3V1. At the same time, the cutting mechanism 26 quickly returns to the initial position at a reverse speed of 2V1 along with the rubber cutting and conveying device. Of course, the 3V1 and 2V1 mentioned here can also be adjusted as needed in other embodiments, as long as the difference between the two can ensure that the rubber material 7 can still convey the rubber material backward at a speed of V1 during this process. After reaching the initial position, the driving rollers 226 and 246 of the rubber cutting section resume running forward at a speed of V1, and the rubber cutting driving electric cylinder 280 stops.

[0062] 7. When the cut rubber material reaches the position where the reweighing sensor 314 is located, the driving roller 36 of the weighing and conveying section stops for static reweighing (the reweighing time is, for example, 2S) to obtain the real weight value. In this way, the main control box can obtain the difference between a real weight value and a predetermined weight value for adjusting the predetermined advance. Through such an algorithm, the metering and weighing of the rubber material will be more and more accurate, that is, the real weight value will approach the predetermined weight.

[0063] 8. After the reweighing is completed, the driving rollers 36 of the weighing and conveying section and the driving roller 46 of the packaging buffer section both accelerate to run at a speed of twice V1, that is, 2V1. Of course, the 2V1 mentioned here can also be changed in other embodiments, as long as it is ensured that there is no cut rubber material block (not shown in the figure) on the weighing and conveying section before the new end of the rubber material touches the weighing and conveying section, and the rubber material block flows to the next process after passing through the packaging buffer section.

[0064] 9. After the rubber material is cut and the new end of the rubber material is detected by the second incoming material sensor 23, if the weighing incoming material sensor 312 does not sense the signal after 20S (the time can be set according to the specific situation), the equipment alarms. Then the new end of the rubber material is sensed by the weighing incoming material sensor 312. At this time, the driving rollers 226 and 246 of the cutting and conveying section both stop running, and at the same time, the rubber cutting driving electric cylinder 280 drives the cutting mechanism 26 to move backward at the same speed as the moving speed of the rubber material 7, which is V1.

[0065] 10. When the real-time weight value measured by the weight sensor 31 matches the predetermined weight value, the pressing cylinder 27 moves downward to press the rubber compound 7, and the cutting cylinder 262 pushes the cutting wire 265 upward to cut, completing the second rubber cutting (this time it is upward rubber cutting, while the previous time it was downward rubber cutting);

[0066] 11. After the rubber compound is cut, the cutting cylinder 262 is sensed by the upper dead point sensor 266, and the pressing cylinder 27 moves upward to the initial position, and the rubber compound 7 is released; at the same time, the driving roller 36 of the weighing and conveying section accelerates to run at a speed of twice V1, that is, 2V1. The purpose of the acceleration is still to separate the cut rubber compound from the original rubber compound and perform the next operation; after the rubber compound is cut, the driving rollers 226 and 246 of the cutting section both run at three times V1, that is, 3V1. At the same time, the cutting driving cylinder 280 drives the cutting conveying device and the cutting mechanism 26 to quickly return to the initial position at a reverse speed of 2V1. The purpose of setting these speeds is to enable the endless belts 224 and 244 on the cutting conveying device to convey the rubber compound 7 backward at a speed of V1 during the reset process; after returning to the initial position, the driving rollers 226 and 246 rotate forward at a speed of V1, and the cutting driving cylinder 280 stops;

[0067] 12. When the cut rubber compound block reaches the reweighing position 314, the endless belt 34 of the weighing and conveying section stops running for static reweighing (the reweighing time is, for example, 2S) to obtain the real weight value; the main control box obtains the difference between the real weight value and the predetermined weight value again to adjust the predetermined advance amount so that the real weight value of the subsequent cut rubber compound blocks will tend to the predetermined weight value again.

[0068] 13. After the reweighing is completed, the driving roller 36 of the weighing and conveying section and the driving roller 46 of the packaging buffer section accelerate to run again at a speed of twice V1, that is, 2V1. Of course, the 2V1 mentioned here can also be changed in other embodiments, as long as it is ensured that there is no cut rubber compound block on the weighing and conveying section before the new end of the rubber compound contacts the weighing and conveying section (not shown in the figure); the cut rubber compound block flows to the next process after passing through the packaging buffer section;

[0069] 14. Two rubber cuttings form a cycle. The first time is downward cutting, and the second time is upward cutting. After that, this rubber cutting cycle process is repeated.

[0070] 15. If any safety cover is opened during the rubber cutting process, the production line will stop to play a protective role.

[0071] III. Working process of the second rubber cutting method: Select the length feedback rubber cutting method

[0072] After selecting the length feedback and cutting method, the length detection photoelectric module 33 will move to the corresponding position. Selecting the length feedback and cutting method also requires setting the predetermined weight value of the rubber material block to be cut.

[0073] 1. Start the extruder.

[0074] 2. The rubber material 7 is extruded from the outlet of the extruder, driving the front passive roller 16 of the material receiving section to rotate, driving the rotary encoder 15, and through program calculation, an extrusion speed V1 is obtained.

[0075] 3. The rubber material 7 continues to move backward. The first incoming material sensor 13 obtains a signal and gives the start signal to the driving roller 226 and driving roller 246 of the cutting section, the driving roller 36 of the weighing and conveying section, and the driving roller 46 of the packaging buffer section. They can all receive the speed signal of the rotary encoder 15, and the speeds of the four are all V1.

[0076] 4. When the rubber material 7 moves to the second incoming material sensor 23, the incoming material signal is given to the pressing cylinder 27. The pressing cylinder 27 moves downward. When the pressing detection sensor 292 detects the rubber material (for example, about 2 cm away from the rubber material), the pressing cylinder 27 stops; if the length detection photoelectric module 33 does not sense a signal after, for example, 20S (the time can be set according to the specific situation), the device alarms.

[0077] 5. The rubber material 7 is continuously conveyed backward. The first sensor 35 of the length detection photoelectric module 33 senses a signal, indicating that the rubber material 7 is approaching the predetermined length value; and after sensing the signal, the driving rollers 226 and 246 of the cutting section both stop running. At the same time, the cutting driving cylinder 280 drives the cutting conveying device and the cutting mechanism to move backward together, with the same speed as the rubber material movement speed, which is V1.

[0078] 6. After the end sensor 39 of the length detection photoelectric module 33 senses a signal, the length of the rubber material to be cut is the predetermined length value. The rubber cutting cylinder 262 pushes the cutting wire 265 downward to cut the rubber material. The middle sensor 37 in the length detection photoelectric module 33 reconfirms that the rubber material to be cut is close to the predetermined length value. If it does not sense a signal, the device will alarm. After the rubber material is cut, when the rubber cutting cylinder 262 runs to the lower dead center position, the lower dead center sensor 268 senses the signal, and the driving roller 36 of the weighing and conveying section accelerates to run at a speed of 2V1. The purpose of the acceleration is to separate the cut rubber material from the original rubber material and perform the next operation. After the lower dead center sensor 268 senses the signal, the driving rollers 226 and 246 of the rubber cutting section both rotate backward at 3V1. At the same time, under the drive of the rubber cutting drive electric cylinder 280, the cutting mechanism 26 quickly returns to the initial position together with the rubber cutting conveying mechanism at a reverse speed of 2V1. After reaching the initial position, the driving rollers 226 and 246 of the rubber cutting section rotate forward at a speed of V1, that is, the endless belts 224 and 244 on them convey the rubber material 7 backward, and the rubber cutting drive electric cylinder 280 stops.

[0079] 7. When the cut rubber material block reaches the position of the reweighing sensor 314, the driving roller 36 of the weighing and conveying section stops for static reweighing (the reweighing time is, for example, 2S), and the true weight value is sensed by the weight sensor 31. In this way, the system can obtain the difference between a true weight value and a predetermined weight value, which is used to adjust the cutting length. Through such an algorithm, the metering and weighing of the rubber material will be more and more accurate, that is, the true weight value will approach the predetermined weight value. For example, when the true weight value is lower than the predetermined weight value of the rubber material block weight, the system will calculate a result and send a signal to the slide table type electric cylinder 330 that drives the length detection photoelectric module 33. The slide table type electric cylinder 330 will drive the length detection photoelectric module 33 to move in the direction of increasing the rubber material length to adjust its sensing position.

[0080] 8. After the reweighing is completed, the driving rollers 36 of the weighing and conveying section and the driving roller 46 of the packaging buffer section both accelerate to run at a speed of 2V1, so as to ensure that there is no cut rubber material block on the weighing and conveying section before the new end of the rubber material 7 contacts the weighing and conveying section. The rubber material block flows to the next process after passing through the packaging buffer section.

[0081] 9. After the rubber material is cut off and the new end of the rubber material is detected by the second incoming material sensor 23, if the length detection optoelectronic module 33 does not sense a signal after 20S (the time can be set according to specific circumstances), the equipment will alarm; then the new end of the rubber material is sensed by the first sensor 35 of the length detection optoelectronic module 33. At this time, both the driving rollers 226 and 246 of the rubber cutting section stop running. At the same time, the rubber cutting driving electric cylinder 280 drives the cutting mechanism 26 and the rubber cutting conveying device to move backward together at the same speed as the rubber material movement speed, which is V1;

[0082] 10. When the new end of the rubber material reaches the position of the end sensor 39 of the length detection optoelectronic module 33, the material pressing electric cylinder 27 descends to press the rubber material 7, and the rubber cutting cylinder 262 pushes the cutting wire 265 upward to cut, completing the second rubber cutting. This time, the rubber is cut upward, while the first time it was cut downward;

[0083] 11. After the rubber material is cut off, the rubber cutting cylinder 262 is sensed by the upper dead center sensor 266, the material pressing electric cylinder 27 moves upward to the initial position, and the rubber material 7 is released. At the same time, the driving roller 36 of the weighing and conveying section accelerates to run at a speed of 2V1. The purpose of the acceleration is still to separate the cut rubber material block from the original rubber material and perform the next operation; after the rubber material is cut off, both the driving rollers 226 and 246 of the rubber cutting section rotate at 3V1. At the same time, under the drive of the rubber cutting driving electric cylinder 280, the cutting mechanism 26 and the rubber cutting conveying section quickly return to the initial position at a reverse speed of 2V1. After returning to the initial position, the driving rollers 226 and 246 rotate forward at a speed of V1, and the rubber cutting driving electric cylinder 280 stops;

[0084] 12. When the cut rubber material block reaches the position of the reweighing sensor 314, the annular conveyor belt 34 of the weighing and conveying section stops running for static reweighing (the reweighing time is, for example, 2S) to obtain the true weight value. The main control box obtains the difference between the true weight value and the predetermined weight value again to adjust the predetermined length value so that the true weight value of the subsequent rubber material blocks to be cut will tend to the predetermined weight value again;

[0085] 13. After the reweighing is completed, the driving roller 36 of the weighing and conveying section and the driving roller 46 of the packaging buffer section accelerate to run again at a speed of 2V1, and the cut rubber material blocks flow to the next process after passing through the packaging buffer section;

[0086] 14. Two rubber cuttings form a cycle. The first time is a downward cut, and the second time is an upward cut. Then repeat this rubber cutting cycle process;

[0087] 15. If any safety cover is opened during the rubber cutting process, the system will stop operating to play a protective role.

[0088] It should be noted that during the second gumming process of selecting the length feedback gumming method, the purpose of the speed setting mentioned (such as 3V1 and 2V1) is the same as the setting purpose in the above first gumming process, so it will not be elaborated here. The technical content and technical features of the present invention have been disclosed as above. However, it can be understood that under the creative concept of the present invention, those skilled in the art can make various changes and improvements to the above structure, including combinations of the technical features separately disclosed or claimed here, and other combinations that obviously include these features. These deformations and / or combinations all fall within the technical field involved in the present invention and within the protection scope of the claims of the present invention.

Claims

1. A fully automatic quantitative rubber cutting production line, characterized in that Including: A material receiving section, which includes a material receiving frame and a material receiving conveying device located on the material receiving frame and butting against the outlet of the extruder; A rubber cutting section, which includes a rubber cutting frame, a rubber cutting conveying device slidably installed on the rubber cutting frame, a cutting mechanism installed on the rubber cutting conveying device, and a rubber cutting driving mechanism fixed on the rubber cutting frame and drivingly connected to the rubber cutting conveying device; A weighing and conveying section, which includes a weighing and conveying frame, a weighing and conveying device located on the weighing and conveying frame, and a metering mechanism; A packaging and buffering section, which includes a packaging and buffering frame and a packaging conveying device located on the packaging and buffering frame; A main control box, which is electrically connected to the material receiving conveying device, the rubber cutting conveying device, the cutting mechanism, the rubber cutting driving mechanism, the weighing and conveying device, the metering mechanism, and the packaging conveying device; Wherein, the rubber cutting conveying device includes a front conveying device and a rear conveying device spaced apart front and rear to form a cutting opening, the cutting mechanism is installed across the cutting opening, and the rubber cutting conveying device is configured to stop its own conveying of the rubber material when the main control box obtains a rubber cutting signal from the metering mechanism and be driven by the rubber cutting driving mechanism to drive the whole cutting mechanism to move towards the weighing and conveying section, and at the same time, the cutting mechanism can complete rubber cutting at the cutting opening during this movement.

2. The fully automatic quantitative rubber cutting production line according to claim 1, characterized in that, It further includes a safety protection device, which includes a material receiving section safety cover installed on the material receiving frame, a rubber cutting section safety cover installed on the rubber cutting frame, a weighing and conveying section safety cover installed on the weighing and conveying frame, and a packaging and buffering section safety cover installed on the packaging and buffering frame.

3. The fully automatic quantitative rubber cutting production line according to claim 2, characterized in that The material receiving section safety cover is of a push-pull movable type, the rubber cutting section safety cover, the weighing and conveying section safety cover, and the packaging and buffering section safety cover are all configured as safety covers that cut off the power supply when opened and are respectively electrically connected to the main control box, and the rubber cutting section safety cover is configured as a side-opening window type, and the weighing and conveying section safety cover and the packaging and buffering section safety cover are both configured as upward-lifting window types.

4. The full-automatic quantitative rubber cutting production line according to any one of claims 1 to 3, characterized in that The cutting mechanism includes a rubber cutting bracket fixed on the rubber cutting conveying device, a rubber cutting cylinder fixed on the rubber cutting bracket, a cutting tool holder drivingly connected to the rubber cutting cylinder, a pressing material electric cylinder fixed on the rubber cutting bracket, and a pressing material frame drivingly connected to the pressing material electric cylinder. Among them, a cutting tool is installed on the cutting tool holder, and the cutting tool is aligned with the cutting opening of the rubber cutting conveying device.

5. The full-automatic quantitative rubber cutting production line according to claim 4, wherein The rubber cutting cylinder is installed on the top cross beam of the rubber cutting bracket, the cutting tool holder is of an inverted U-shaped structure, the lower opening end of the inverted U-shaped structure is provided with the cutting tool, and the upper horizontal part of the inverted U-shaped structure is connected to the piston rod of the rubber cutting cylinder. Among them, a pair of guide rods are respectively installed on the top cross beam of the rubber cutting bracket on both sides of the piston rod, and the horizontal part of the inverted U-shaped structure is slidably connected to the pair of guide rods.

6. The fully automatic quantitative rubber cutting production line according to claim 5, wherein The pressing material electric cylinder is installed on the top cross beam of the rubber cutting bracket and drivingly connected to the pressing material frame. A pressing material cross beam is arranged on the pressing material frame, and the pressing material cross beam is arranged parallel to the cutting tool along the conveying direction of the rubber cutting conveying device.

7. The fully automatic quantitative rubber cutting production line according to claim 6, wherein, The pressing cylinders are two and are respectively located on the left and right sides of the cutting tool holder. Each of the two pressing cylinders is drivingly connected to a pressing frame. The pressing cross beams are two and are arranged in parallel with a space in between. The cutting tool holder is located between the two pressing cross beams.

8. The fully automatic quantitative rubber cutting production line according to claim 7, characterized in that, On one side of the rubber cutting support, an upper dead point sensor and a lower dead point sensor for sensing the position of the piston rod of the rubber cutting cylinder are installed; on the lower sides of both ends of the pressing frame, a pressing detection sensor is installed, and the pressing detection sensor is a photoelectric sensor.

9. The fully automatic quantitative rubber cutting production line according to claim 4, characterized in that, The weighing and conveying device includes a roller frame, an endless conveyor belt, a driving roller and a driven roller which are installed on the roller frame and are surrounded by the endless conveyor belt; the measuring mechanism includes a weight sensor and a length detection photoelectric module. Among them, the weight sensor is installed on the roller frame, and the length detection photoelectric module is installed on the roller frame with an adjustable position.

10. The fully automatic quantitative rubber cutting production line according to claim 4, characterized in that, The material receiving and conveying device includes a roller frame, an endless conveyor belt, a front driven roller and a rear driven roller which are installed on the roller frame and are surrounded by the endless conveyor belt. A rotary encoder for sensing the incoming material speed is installed on the front driven roller, and a first incoming material sensor is installed at one end of the roller frame adjacent to the front conveying device; both the front conveying device and the rear conveying device include a roller frame, an endless conveyor belt, a driving roller and a driven roller which are installed on the roller frame and are surrounded by the endless conveyor belt. Among them, a second incoming material sensor is installed at one end of the roller frame of the rear conveying device adjacent to the weighing and conveying device.

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