Full-automatic rubber cutting mechanism

Abstract

The utility model discloses a full-automatic rubber cutting mechanism which comprises a main control computer, a front end sampling assembly, a material cutting assembly and a weighing and metering assembly, the front end sampling assembly, the material cutting assembly and the weighing and metering assembly are electrically connected with the main control computer, and the front end sampling assembly comprises a driven conveyor in butt joint with an outlet of a rubber extruding machine and a speed sensor installed on the driven conveyor. The weighing and metering assembly comprises a driving conveyor and a weighing sensor, the driving conveyor is aligned with an outlet of the driven conveyor at intervals, the weighing sensor is installed at the bottom of the driving conveyor, and the material cutting assembly stretches across the interval and is used for cutting rubber blocks. According to the utility model, the unpowered front-end sampling assembly is additionally arranged between the rubber extruding machine and the weighing and metering assembly, the front-end sampling assembly collects the real-time speed of the rubber block output from the rubber extruding machine and sends the real-time speed to the main control computer, and the main control computer controls the weighing and metering assembly, so that the conveying speed of the driving conveyor is kept consistent with the conveying speed of the rubber block; and secondary extrusion or stretching is avoided, secondary influence on the overall density of the rubber block is avoided, and the weighing accuracy is improved as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of silica gel production equipment, in particular to a full-automatic silica gel cutting mechanism. Background Art

[0002] At present, the packaging of rubbers such as silicone is basically measured manually, usually in the form of pre-cutting and manual weighing to make up the amount. For leading production companies, it often requires a large number of workers to operate, making it difficult to achieve automation. When the rubber blocks are molded after mixing, whether it is a double-conical screw feeding or a triple-screw feeding, the principle is to extrude the material to shape it, which inevitably squeezes in air. At the same time, since the hardness of the rubber blocks is very low and the overall shape is soft, there is no definite overall density after molding. Moreover, due to the unstable extrusion speed, direct connection with the existing weighing conveyor will inevitably result in speed differences, thereby stretching or squeezing the molded rubber blocks, causing air to be discharged or squeezed into the rubber blocks, causing a secondary impact on the overall density of the molded rubber blocks. Therefore, when using existing automated metering devices, whether using a fixed length or weighing method, it is impossible to achieve accuracy. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies of the existing technology and to propose a fully automatic rubber cutting mechanism, which adds an unpowered front-end sampling component between the rubber extruder and the weighing and metering component. The front-end sampling component collects the real-time speed of the rubber block when it is output from the rubber extruder and sends it to the main control computer. The main control computer controls the weighing and metering component to ensure that the conveying speed of the active conveyor is consistent with the conveying speed of the rubber block, avoid secondary extrusion or stretching, avoid secondary effects on the overall density of the rubber block, and improve the weighing accuracy as much as possible.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A fully automatic rubber cutting mechanism includes a main control machine and a front-end sampling component, a material cutting component and a weighing and metering component, all of which are electrically connected to the main control machine. The front-end sampling component includes a passive conveyor connected to the outlet of the rubber extruder and a speed sensor installed on the passive conveyor. The weighing and metering component includes an active conveyor aligned with the outlet of the passive conveyor and a weighing sensor installed at the bottom of the active conveyor. The material cutting component spans the gap between the passive conveyor and the active conveyor and is used to cut the continuous rubber blocks conveyed.

[0006] Furthermore, the passive conveyor includes a fixed first frame and an unpowered conveying component located on the top of the first frame. The unpowered conveying component includes a plurality of unpowered rollers arranged in parallel. The unpowered conveying component is wrapped with an anti-sticking thin belt.

[0007] Furthermore, the speed sensor is an encoder installed at the end of any one of the unpowered rollers or a photoelectric speed sensor installed on the side of the unpowered transmission component.

[0008] Furthermore, the material cutting assembly includes a fixed second frame and a cutting part extending in the vertical direction and movably arranged on the second frame in the horizontal direction. The rear side of the cutting part is provided with a transition conveying roller which is rotatably installed in the middle of the second frame and is located in the same conveying plane as the passive conveyor. Following blocking parts installed on the second frame are symmetrically provided on the left and right sides, and position sensors are symmetrically provided below the transition conveying roller.

[0009] Furthermore, the following blocking part includes a clamping cylinder fixedly mounted on the second frame, the piston rod of the clamping cylinder is horizontally arranged and fixedly mounted with a connecting block and a connecting plate in sequence, and a clamping block is elastically mounted on the connecting plate along the conveying direction.

[0010] Furthermore, side plates are vertically extended from both ends of the connecting plate, and the top and bottom of the two side plates are respectively fixed with guide rods. The length of the guide rod is greater than the length of the clamping block and a spring sleeved on the guide rod is connected between the clamping block.

[0011] Furthermore, the upper and lower parts of the transition conveying roller are respectively provided with screw assemblies rotatably mounted on the second frame in parallel, the upper and lower ends of the cutting part are respectively detachably fixed to the movable nuts of the two screw assemblies, and the side of the second frame is provided with a driving mechanism that is transmission-connected to the two screw assemblies.

[0012] Furthermore, linear guide rails are respectively provided on the bottom and top opposite surfaces of the second frame, sliders are slidably provided on the linear guide rails, and the moving nuts of the two screw rod assemblies are respectively fixed on the corresponding sliders.

[0013] Furthermore, the cutting part is a cutting wire, and a wire breakage sensor facing the cutting wire is fixedly mounted on the second frame.

[0014] Furthermore, material detectors are provided at the inlet of the passive conveyor and the outlet of the active conveyor.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] (1) The utility model adds a non-powered front-end sampling component between the rubber extruder and the weighing and metering component. The speed sensor of the front-end sampling component collects the conveying speed of the passive conveyor driven by the rubber block, that is, the real-time speed of the rubber block when it is output from the rubber extruder, and transmits it to the main control computer. The main control computer controls the weighing and metering component to ensure that the conveying speed of the active conveyor is consistent with the conveying speed of the rubber block, avoid secondary squeezing or stretching, thereby avoiding secondary effects on the overall density of the rubber block and improving the weighing accuracy as much as possible.

[0017] (2) The passive conveyor of the utility model adopts the combination of an unpowered roller and an anti-sticking thin belt. Not only is the structure simple, but the anti-sticking thin belt can also reduce friction resistance, ensuring that the rubber blocks coming out of the rubber extruder will not be deformed under the influence of external forces, avoiding the change of the overall material density caused by air entering the rubber blocks, and further improving the weighing accuracy.

[0018] (3) The speed sensor of the utility model can use an encoder to measure the rotation speed of the roller or directly use a photoelectric sensor to measure the moving speed of the rubber block, providing a variety of feasible solutions. It can be reasonably adjusted according to the on-site layout to meet the needs of different usage scenarios.

[0019] (4) The breaking assembly of the present invention receives the rubber block transmitted by the transition conveyor roller, so that the rubber block can be more naturally transferred to the active conveyor, and is provided with a follow-up blocking part that can clamp the rubber block and move synchronously, which is convenient for the cutting part to cut, and at the same time will not pull the rubber block, thereby avoiding deformation of the rubber block.

[0020] (5) The following blocking part of the utility model realizes the clamping or loosening of the rubber block by the extension and contraction of the clamping cylinder. The clamping block is elastically mounted on the connecting plate, thereby realizing the following movement after the clamping rubber block is clamped, and automatically resets after the clamping block is loosened. No additional power source is required, and the structure is simple.

[0021] (6) The present invention can achieve elastic connection through the combination of spring and guide rod, and can also provide a good guiding effect for the movement of the clamping block, making the movement more stable.

[0022] (7) The utility model drives the screws of the two screw assemblies to rotate through a driving mechanism, thereby realizing the translation of the movable nut. It has a simple structure, smooth movement, high conversion efficiency and high position movement accuracy.

[0023] (8) The utility model is additionally provided with a translation structure consisting of a linear guide rail and a slider, which further improves the stability of the cutting movement of the cutting part.

[0024] (9) The present invention uses cutting wire as the cutting part to minimize the contact area with the cutting surface and avoid sticking. At the same time, a wire breakage sensor is provided to detect faults in the first place and perform repairs in time.

[0025] (10) The utility model is provided with a material detector for monitoring whether there is a rubber block at the current position, laying the foundation for automatic rubber cutting, avoiding malfunction and idle operation, and further improving the reliability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 This is a schematic structural diagram of the cutting component of the utility model;

[0029] Figure 3 This is a structural diagram of the following blocking part of the utility model.

[0030] The reference numerals in the accompanying drawings are:

[0031] Front-end sampling component 1, passive conveyor 1-1, first frame 1-1-1, unpowered conveying component 1-1-2, anti-sticking thin belt 1-1-3, speed sensor 1-2, material cutting component 2, second frame 2-1, cutting part 2-2, transition conveying roller 2-3, following blocking part 2-4, clamping cylinder 2-4-1, connecting block 2-4-2, connecting plate 2-4-3, clamping block 2-4-4, guide rod 2-4-5, spring 2-4-6, position sensor 2-5, screw assembly 2-6, driving mechanism 2-7, wire breakage sensor 2-8, linear guide rail 2-9, slider 2-10, weighing and metering component 3, active conveyor 3-1, weighing sensor 3-2, material detector 4. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0033] (Example 1)

[0034] like Figures 1 to 3The fully automatic rubber cutting mechanism shown includes a main control unit and a front-end sampling component 1, a cutting component 2, and a weighing and metering component 3, all of which are electrically connected to the main control unit. The front-end sampling component 1 and the weighing and metering component 3 are aligned and spaced apart, and the cutting component 2 is arranged across the space to cut the continuous rubber blocks conveyed. The front-end sampling component 1 is an unpowered component that connects to the outlet of the rubber extruder and is used to receive the extruded and shaped rubber blocks. The rubber blocks are passively conveyed and the conveying speed of the rubber blocks is detected under the driving force of the rubber blocks and sent to the main control unit. The main control unit controls the conveying speed of the weighing and metering component 3 to keep it consistent with the moving speed of the rubber blocks to avoid deformation of the rubber blocks. At the same time, the main control unit automatically weighs the rubber blocks. When the weight of the rubber blocks on the weighing and metering component 3 reaches the set value, a signal is sent to the main control unit, which controls the cutting component 2 to automatically cut the rubber blocks. After cutting, a signal is sent to the main control unit, which controls the weighing and metering component 3 to speed up the conveying speed, thereby creating a distance from the rubber blocks behind and completing automatic rubber cutting.

[0035] Specifically, the front-end sampling component 1 includes a passive conveyor 1-1 connected to the outlet of the rubber extruder and a speed sensor 1-2 installed on the passive conveyor 1-1. The passive conveyor 1-1 includes a fixed first frame 1-1-1, an unpowered conveying component 1-1-2 located on the top of the first frame 1-1-1, and an anti-sticking thin belt 1-1-3 wound around the outside of the unpowered conveying component 1-1-2. The unpowered conveying component includes a plurality of unpowered rollers arranged in parallel. The overall structure is simple. At the same time, the anti-sticking thin belt 1-1-3 can reduce friction resistance, ensure that the rubber block coming out of the rubber extruder will not be deformed under the influence of external forces, avoid changes in the overall material density caused by air entering the rubber block, and improve weighing accuracy. The speed sensor 1-2 is an encoder installed at the end of any unpowered roller or a photoelectric speed sensor installed on the side of the unpowered conveying component, etc., which is used to measure the moving speed of the rubber block. It can be reasonably adjusted according to the on-site layout to meet the needs of different usage scenarios.

[0036] The cutting assembly 2 includes a fixed second frame 2-1 and a cutting section 2-2 extending in the vertical direction and movably arranged on the second frame in the horizontal direction. The rear side of the cutting section 2-2 is provided with a transition conveyor roller 2-3 that is rotatably mounted in the middle of the second frame 2-1 and is located in the same conveying plane as the passive conveyor 1-1. The left and right sides are symmetrically provided with follower blocking sections 2-4 installed on the second frame 2-1, and position sensors 2-5 are symmetrically provided below the transition conveyor roller 2-3. The rubber block is received by the transition conveyor roller 2-3, so that the rubber block can be more naturally transferred to the weighing and metering assembly 3. The rubber block is clamped and moved synchronously by the follower blocking section 2-4, which not only facilitates the cutting of the rubber block by the cutting section 2-2, but also does not pull the rubber block and prevents the rubber block from being deformed. When the rubber block is cut, the position sensor detects that the cutting section has moved to the side and sends a signal to the main control machine.

[0037] Specifically, the upper and lower ends of the transition conveyor roller 2-3 are respectively provided with screw assemblies 2-6 rotatably mounted on the second frame 2-1. The upper and lower ends of the cutting section 2-2 are respectively detachably fixed to the movable nuts of the two screw assemblies 2-6. The side of the second frame 2-1 is provided with a drive mechanism 2-7 that is transmission-connected to the two screw assemblies 2-6. The drive mechanism 2-7 can adopt a mechanism combining a servo motor and a transmission belt. It is a relatively mature existing technology and will not be described in detail here. The drive mechanism 2-7 drives the screws of the two screw assemblies 2-6 to rotate, thereby achieving translation of the movable nut, and then achieving movement of the cutting section 2-2. The structure is simple, the movement is smooth, the conversion efficiency is high, and the position movement accuracy is high.

[0038] To further enhance rubber cutting reliability, the cutting unit 2-2 of this embodiment utilizes a cutting wire to minimize contact with the cutting surface and prevent sticking. A wire break sensor 2-8, facing the cutting wire, is mounted on the second frame 2-1, enabling immediate detection of any breakage in the cutting unit and prompt repair. Linear guides 2-9 are provided on the bottom and top opposing surfaces of the second frame 2-1, respectively. Slide blocks 2-10 slide on the linear guides 2-9. The movable nuts of the two lead screw assemblies 2-6 are fixed to their corresponding slide blocks 2-10, further enhancing the smooth movement and cutting of the cutting unit 2-2.

[0039] The following blocking part 2-4 includes a clamping cylinder 2-4-1, a connecting block 2-4-2, a connecting plate 2-4-3, a clamping block 2-4-4, a guide rod 2-4-5 and a spring 2-4-6. The clamping cylinder 2-4-1 is fixedly mounted on the second frame 2-1, the piston rod is horizontally arranged and fixedly connected to the connecting block 2-4-2 and the connecting plate 2-4-3 in sequence, and side plates are vertically extended at both ends of the connecting plate 2-4-2. There are two guide rods 2-4-5, and the gap passes through the clamping block 2-4-4, and are respectively fixedly connected between the top and bottom of the two side plates. The length of the guide rod 2-4-5 is greater than that of the clamping block 2-4-4. The spring 2-4-6 is sleeved on the guide rod 2-4-5, connecting the clamping block 2-4-4 and the side plate, so that the clamping block 2-4-4 is elastically mounted on the connecting plate 2-4-3 along the conveying direction, thereby realizing the follow-up movement of the clamping rubber block and automatically resetting after the clamping block is released. No additional power source is required and the structure is simple.

[0040] Weighing and metering assembly 3 includes an active conveyor 3-1 spaced and aligned with the exit of passive conveyor 1-1, and a load cell 3-2 mounted at the bottom of active conveyor 3-1. The structure of active conveyor 3-1 is similar to that of passive conveyor 1-1, differing only in the addition of a power source. This is a relatively conventional structure and will not be described in detail here. Material detectors 4 are installed at both the entrance of passive conveyor 1-1 and the exit of active conveyor 3-1 to monitor the presence of rubber blocks. This paves the way for automated rubber cutting, avoids idle runs caused by malfunctions, and further improves the reliability of the mechanism.

[0041] The workflow of this embodiment is as follows: After the plasticization of the rubber block from the rubber extruder, it passes through the front-end sampling component 1, which generates a thrust on the front-end adopting group 1. At this time, the front-end sampling component 1 reads the discharge speed of the rubber extruder and transmits the data to the main control computer, which is converted into parameters to guide the operating speed of the weighing and metering component 3, so that the discharge speed of the rubber extruder and the conveying speed of the weighing and metering component are completely matched. Real-time synchronous fine-tuning is performed according to the speed of the discharge speed to ensure that the density of the entire rubber block meets the force of the rubber extruder, thereby ensuring that the density of the material is within a nearly constant range throughout the entire metering process. The weighing and metering component 3 records the weight of the current rubber block in real time and controls the cutting component 2 to cut the material by setting the weight parameter. The three modules cooperate with each other to ultimately achieve the purpose of accurate cutting and metering.

[0042] The utility model adds an unpowered front-end sampling component 1 between the rubber extruder and the weighing and metering component. The speed sensor of the front-end sampling component 1 collects the conveying speed of the passive conveyor driven by the rubber block, that is, the real-time speed of the rubber block when it is output from the rubber extruder, and transmits it to the main control computer. The main control computer controls the weighing and metering component to ensure that the conveying speed of the active conveyor is consistent with the conveying speed of the rubber block, avoid secondary extrusion or stretching, thereby avoiding secondary influence on the overall density of the rubber block, and improving the weighing accuracy as much as possible.

[0043] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fully automatic rubber cutting mechanism, characterized by: It includes a main control machine and a front-end sampling component, a material cutting component and a weighing and metering component that are electrically connected to the main control machine. The front-end sampling component includes a passive conveyor connected to the outlet of the rubber extruder and a speed sensor installed on the passive conveyor. The weighing and metering component includes an active conveyor aligned with the outlet of the passive conveyor and a weighing sensor installed at the bottom of the active conveyor. The material cutting component spans the gap between the passive conveyor and the active conveyor and is used to cut the continuous rubber blocks conveyed.

2. The fully automatic rubber cutting mechanism according to claim 1, characterized in that: The passive conveyor includes a fixed first frame and an unpowered conveying component located on the top of the first frame. The unpowered conveying component includes a plurality of unpowered rollers arranged in parallel. An anti-sticking thin belt is wound around the unpowered conveying component.

3. The fully automatic rubber cutting mechanism according to claim 2, characterized in that: The speed sensor is an encoder installed at the end of any one of the unpowered rollers or a photoelectric speed sensor installed at the side of the unpowered transmission component.

4. The fully automatic rubber cutting mechanism according to claim 1, characterized in that: The material cutting assembly includes a fixed second frame and a cutting part extending in the vertical direction and movably arranged on the second frame in the horizontal direction. The rear side of the cutting part is provided with a transition conveying roller rotatably installed in the middle of the second frame and located in the same conveying plane as the passive conveyor. Following blocking parts installed on the second frame are symmetrically provided on the left and right sides, and position sensors are symmetrically provided below the transition conveying roller.

5. The fully automatic rubber cutting mechanism according to claim 4, characterized in that: The following blocking part includes a clamping cylinder fixedly mounted on the second frame, the piston rod of the clamping cylinder is horizontally arranged and fixedly mounted with a connecting block and a connecting plate in sequence, and a clamping block is elastically mounted on the connecting plate along the conveying direction.

6. The fully automatic rubber cutting mechanism according to claim 5, characterized in that: Side plates are vertically extended from both ends of the connecting plate, and the top and bottom of the two side plates are respectively fixed with guide rods. The length of the guide rod is greater than the length of the clamping block and a spring sleeved on the guide rod is connected between the clamping block.

7. The fully automatic rubber cutting mechanism according to claim 4, characterized in that: The upper and lower parts of the transition conveying roller are respectively provided with screw assemblies rotatably mounted on the second frame in parallel, the upper and lower ends of the cutting part are respectively detachably fixed to the moving nuts of the two screw assemblies, and the side of the second frame is provided with a driving mechanism that is transmission-connected to the two screw assemblies.

8. The fully automatic rubber cutting mechanism according to claim 7, characterized in that: Linear guide rails are respectively provided on the bottom and top opposite surfaces of the second frame, and sliders are slidably provided on the linear guide rails. The moving nuts of the two screw rod assemblies are respectively fixed on the corresponding sliders.

9. The fully automatic rubber cutting mechanism according to claim 4, characterized in that: The cutting part is a cutting wire, and a wire breakage sensor facing the cutting wire is fixedly mounted on the second frame.

10. The fully automatic rubber cutting mechanism according to claim 1, characterized in that: Material detectors are provided at the inlet of the passive conveyor and the outlet of the active conveyor.

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