Solid silicone weighing material supplement mechanism

Abstract

The utility model relates to the field of silica gel product manufacturing, and disclose a kind of solid silica gel weighing material supplementing mechanism, electronic scale, support, driving wheel and driven wheel rotationally arranged on support, conveyer belt around setting on driving wheel and driven wheel, cut material platform with the transmission end of conveyer belt, cutter is set above cut material platform, for driving cutter vertical movement and make cutter and cut material platform cooperate cutting solid silica gel strip cut material drive mechanism, the axle of driving wheel one end is connected with servo motor drive, other end is connected with meter, the cut material drive mechanism, servo motor, meter and industrial computer integrated machine are electrically connected.The utility model provides the mechanism by the weight of supplementing material into the silica gel strip length that can be accurately measured, in combination with the stable speed control of servo motor, cooperate meter real-time feedback to industrial computer integrated machine accurately calculates cutting length and carries out automatic cutting.

Description

Technical Field

[0001] This utility model relates to the field of silicone product manufacturing, and in particular to a solid silicone weighing and feeding mechanism. Background Technology

[0002] In the production of silicone products through hot pressing molds, the silicone must first be processed into rolls using a rubber mixing mill. Then, a slitting machine cuts the rolls onto a film, forming continuous solid silicone blocks. Each block must correspond one-to-one with a single product molding station in the mold to ensure the orderly execution of subsequent molding processes. To ensure the quality stability of the molded products (such as dimensional accuracy and physical properties meeting standards), the weight of the solid silicone block corresponding to each product molding station must strictly adhere to set standards.

[0003] However, due to limitations in the slitting accuracy of existing slitting machines (such as uneven film thickness and cut deviations caused by wear of slitting tools), the weight of the solid silicone blocks formed after slitting naturally varies, making it impossible to directly meet the weight standard requirements of the workstation. To avoid insufficient material and scrap of molded products due to insufficient block weight, the current production process generally uses manual intervention for weight calibration: the staff first weighs each solid silicone block one by one. If the weight of a block is found to be lower than the standard value (e.g., the weighing value is 148g, which is 2g lower than the standard value of 150g), then a small piece of silicone of the corresponding weight needs to be manually estimated and cut from the spare silicone material and added to the insufficient block to make the total weight meet the set requirements.

[0004] However, when manually estimating the removal of small silicone blocks for replenishment, it relies on the experience and judgment of the staff, making it difficult to accurately control the weight to be removed. This often results in insufficient replenishment requiring a second replenishment or excessive replenishment requiring the removal of the excess. Multiple repeated trials are needed to ensure that the weight of the blocks meets the standard, which seriously affects production efficiency.

[0005] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a solid silicone weighing and feeding mechanism, which is designed to accurately cut out small pieces of solid silicone for feeding.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A solid silicone weighing and feeding mechanism includes an electronic scale, a support, a drive wheel and a driven wheel rotatably mounted on the support, a conveyor belt wound around the drive wheel and the driven wheel, a cutting platform connected to the conveying end of the conveyor belt, a cutter mounted above the cutting platform, and a cutting drive mechanism for driving the cutter to move vertically and cooperating with the cutting platform to cut solid silicone strips. One end of the axle of the drive wheel is connected to a servo motor, and the other end is connected to a meter counter. The cutting drive mechanism, the servo motor, and the meter counter are electrically connected to an industrial control integrated machine.

[0008] As a further improvement to the above technical solution, the cutting drive mechanism includes a support plate mounted on the bracket and a cylinder mounted vertically downward on the support plate. The piston rod end of the cylinder is connected to the cutter. When the cylinder drives the cutter to descend, the cutter is misaligned with the cutting platform to cut the solid silicone extending from the cutting platform.

[0009] As a further improvement to the above technical solution, the bracket is provided with a tool for guiding the cut solid silicone block to slide into the hopper of the electronic scale.

[0010] As a further improvement to the above technical solution, the support is provided with a baffle bar located on the side of the conveyor belt, and the baffle bar extends along the length of the conveyor belt.

[0011] As a further improvement to the above technical solution, the driving wheel and the driven wheel are synchronous belt pulleys, and the conveyor belt is a synchronous belt.

[0012] As a further improvement to the above technical solution, a guide wheel for supporting the conveyor belt is provided between the driving wheel and the driven wheel.

[0013] As a further improvement to the above technical solution, the support is provided with a cloth support plate located below the conveyor belt and erected vertically, and the cloth support plate is provided with thumbtacks.

[0014] Beneficial effects: Compared with existing technologies, the mechanism provided by this utility model converts the weight of the replenishing material into a precisely measurable length of the silicone strip. Combined with the stable speed control of the servo motor and the real-time feedback from the meter counter to the industrial control all-in-one computer, the cutting length is accurately calculated for automatic cutting. This makes the weight error of the small replenishing pieces after cutting much smaller than that of manual operation, completely avoiding the problem of repeated testing and calibration. It ensures that the total weight of the replenishing material strictly meets the station standards, providing a guarantee for the dimensional accuracy and physical properties of the products after subsequent hot pressing molding. Attached Figure Description

[0015] Figure 1 A three-dimensional view of the solid silicone weighing and feeding mechanism provided by this utility model.

[0016] Figure 2The solid silicone weighing and feeding mechanism provided by this utility model is a three-dimensional Figure 2 .

[0017] Figure 3 A perspective view of the solid silicone weighing and feeding mechanism provided by this utility model after the solid silicone strip is installed.

[0018] Explanation of main component symbols: 1-Electronic scale, 2-Bracket, 31-Drive wheel, 32-Driven wheel, 33-Conveyor belt, 34-Guide wheel, 4-Cutting platform, 51-Cutter, 52-Support plate, 53-Cylinder, 61-Servo motor, 62-Meter counter, 71-Feeding hopper, 72-Stop bar, 81-Fabric support plate, 82-Pit, 9-Solid silicone strip, 10-Industrial control all-in-one machine. Detailed Implementation

[0019] This utility model provides a solid silicone weighing and feeding mechanism. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0021] Please see Figures 1 to 3 As shown, this utility model provides a solid silicone weighing and replenishing mechanism, including an electronic scale 1, a bracket 2, a drive wheel 31 and a driven wheel 32 rotatably mounted on the bracket 2, a conveyor belt 33 wound around the drive wheel 31 and the driven wheel 32, a cutting platform 4 connected to the conveying end of the conveyor belt 33, a cutter 51 mounted above the cutting platform 4, and a cutting drive mechanism for driving the cutter 51 to move vertically and cooperating with the cutting platform 4 to cut solid silicone strips 9. One end of the axle of the drive wheel 31 is driven and connected to a servo motor 61, and the other end is connected to a meter counter 62. The cutting drive mechanism, the servo motor 61, the meter counter 62 are electrically connected to an industrial control integrated computer 10.

[0022] First, the solid silicone blocks cut by the cutting machine are weighed one by one using electronic scale 1 to obtain the actual weight of the blocks. The actual weight is compared with the preset standard weight value of the product molding station (e.g., 150g) to calculate the difference in the weight of silicone that needs to be added (e.g., when the actual weight is 148g, the difference is 2g). The operator inputs the weight difference or the actual weight weighing value into the industrial control all-in-one machine 10.

[0023] The industrial control all-in-one computer 10 has pre-stored the density parameters of the solid silicone strip 9 (the spare solid silicone strip 9 is a standardized processed part with fixed width and thickness, and only the volume needs to be controlled by the length, and then the weight is calculated by weight = density × volume; based on the above weight difference, the industrial control all-in-one computer 10 automatically calculates the length of the solid silicone strip 9 to be cut (i.e. the target cutting length).

[0024] The industrial control all-in-one computer 10 sends a start command to the servo motor 61, which drives the drive wheel 31 to rotate. The drive wheel 31 and the driven wheel 32 pull the conveyor belt 33 to run smoothly. The spare solid silicone strip 9 is placed on the conveyor belt 33, and the conveyor belt 33 drives the silicone strip to be transported towards the cutting platform 4.

[0025] The drive wheel 31 synchronously drives the meter counter 62 to operate. The meter counter 62 collects the conveying length of the conveyor belt 33 in real time (because the linear speed of the conveyor belt 33 and the drive wheel 31 is the same, the meter counter 62 converts the actual conveying length of the silicone strip by the number of rotations of the drive wheel 31), and continuously feeds the real-time length data back to the industrial control computer 10. When the real-time length reaches the target cutting length, the industrial control computer 10 immediately sends a stop command to the servo motor 61, the conveyor belt 33 stops conveying, and a small section of solid silicone strip 9 precisely extends out of the cutting platform 4 and enters the cutting station.

[0026] The industrial control all-in-one computer 10 synchronously sends an action command to the cutting drive mechanism. The cutting drive mechanism drives the cutter 51 to move vertically downward. The cutter 51 and the cutting platform 4 cooperate to perform a shearing action, cutting the solid silicone strip 9 that is stationed at the cutting station into small supplementary pieces that match the weight difference. After the cutting is completed, the cutting drive mechanism drives the cutter 51 to reset and wait for the next supplementary instruction. The operator can directly add the cut supplementary pieces to the solid silicone block that is underweight to complete the supplementary material.

[0027] Compared to existing technologies that rely on manual experience to cut the replenishing blocks, which is prone to insufficient or excessive replenishment, the mechanism provided by this utility model converts the replenishing weight into a precisely measurable silicone strip length. Combined with the stable speed control of the servo motor 61 and the real-time feedback from the meter counter 62 to the industrial control all-in-one computer 10, the cutting length is accurately calculated for automatic cutting. This makes the weight error of the cut replenishing blocks much smaller than that of manual operation, completely avoiding the problem of repeated testing and calibration. It ensures that the total weight of the replenishing blocks strictly meets the station standards, providing a guarantee for the dimensional accuracy and physical properties of the products after subsequent hot pressing molding.

[0028] Understandably, by automating the material replenishment and cutting process, our organization reduces reliance on the experience of skilled workers (eliminating the need for manual judgment of cutting length and operation of the cutter 51), thereby lowering labor training costs and the rate of human error and improving production efficiency.

[0029] Specifically, the driving mechanism includes a support plate 52 mounted on the bracket 2 and a cylinder 53 mounted vertically downward on the support plate 52. The piston rod end of the cylinder 53 is driven to connect with the cutter 51. When the cylinder 53 drives the cutter 51 to descend, the cutter 51 is misaligned with the cutting platform 4 to cut the small solid silicone segments extending from the cutting platform 4.

[0030] Initially, the piston rod of cylinder 53 is in a retracted state, driving the cutter 51 to remain at a high position above the cutting platform 4, forming a safe distance from the cutting platform 4 to avoid interfering with the conveying of the solid silicone strip 9. When the solid silicone strip 9 is conveyed to the cutting platform 4 by the conveyor belt 33, the part of the solid silicone strip 9 to be cut extends out of the edge of the cutting platform 4 and enters the cutting station. At this time, cylinder 53 starts and outputs driving force, and its piston rod extends downward in the vertical direction, driving the cutter 51 to descend vertically in sync. Since the cutter 51 and the cutting platform 4 adopt a staggered design (that is, the cutting path of the cutter 51 only covers the silicone part extending out of the platform and does not contact the body of the cutting platform 4), the cutter 51 only contacts the extended solid silicone and applies cutting force during the descent, cutting off the redundant section. After the cutting is completed, the piston rod of cylinder 53 retracts, driving the cutter 51 to rise and reset to the initial high position, waiting for the next solid silicone to be conveyed to the position before repeating the above actions, thereby achieving continuous and precise cutting of the extended part of the solid silicone strip 9.

[0031] The support 2 is equipped with a hopper 71 for guiding the cut solid silicone blocks to slide onto the electronic scale 1. The hopper 71, through a preset guide path (such as an inclined slope, guide channel, etc.), can directionally and stably transport the cut solid silicone blocks to the weighing area of ​​the electronic scale 1, thus avoiding the silicone blocks from shifting, rolling off the electronic scale 1, or being unstable in position on the weighing surface due to free fall. This ensures that each cut silicone block falls accurately into the effective weighing range of the electronic scale 1 for subsequent weight detection.

[0032] Furthermore, the support 2 is provided with a baffle 72 located beside the conveyor belt 33, and the baffle 72 extends along the length of the conveyor belt. The baffle 72, extending along the length of the conveyor belt 33, can laterally limit the solid silicone strip on the conveyor belt 33, effectively preventing lateral displacement of the solid silicone strip during transmission due to vibration, inertia, or deviation of the conveyor belt 33. This ensures that the solid silicone strip always remains on the preset conveying path of the conveyor belt 33, preventing it from detaching from the conveyor belt 33 or colliding with surrounding components due to displacement, thus ensuring the continuity and stability of the transmission process.

[0033] Understandably, when the solid silicone strip 9 is initially fed, one long side of the solid silicone strip 9 is aligned with the inner horizontal edge of the conveyor belt 33, and the front end of the solid silicone strip 9 is aligned with the front edge of the cutting platform 4. This standardized placement ensures that the amount of material to be cut during initial feeding is consistent with the length of the solid silicone strip 9 extending from the cutting platform 4.

[0034] In this embodiment, the driving pulley 31 and driven pulley 32 are synchronous pulleys, and the conveyor belt 33 is a synchronous belt. The synchronous pulleys and the synchronous belt are driven by toothed meshing, enabling zero-slip synchronous rotation of the driving pulley 31 and driven pulley 32. This ensures that the linear velocity of the conveyor belt 33 (synchronous belt) is strictly matched with the rotational speed of the driving pulley 31, preventing positional shifts or speed fluctuations in the solid silicone strip 9 during transmission due to slippage. This high-precision transmission characteristic stably maintains the silicone strip against the inner transverse edge of the conveyor belt 33, providing a reliable guarantee for the dimensional accuracy of subsequent cutting.

[0035] The synchronous belt can be made of polyurethane. The solid silicone strip is relatively soft. The surface smoothness of the polyurethane synchronous belt can reduce friction damage to the surface of the silicone strip. Its tension layer has high strength, which can ensure that the belt body has no obvious tensile deformation during transmission and ensure positioning accuracy. At the same time, the polyurethane material has good compatibility with silicone and is not easy to stick or chemically react due to contact, making it suitable for clean transmission of silicone materials.

[0036] In fact, the tension of the timing belt can be adjusted by finely adjusting the lateral position of the driven wheel 32. This adjustment method can keep the timing belt in the best tension state at all times, ensuring accurate tooth meshing and no slippage, and guaranteeing the position accuracy and speed stability of the solid silicone strip 9 transmission.

[0037] Preferably, a guide wheel 34 is provided between the driving pulley 31 and the driven pulley 32 to effectively support the middle section of the conveyor belt 33, preventing the belt from sagging in the middle due to the large distance between the two pulleys. Especially when conveying long solid silicone strips 9, the guide wheel 34 can counteract the gravity of the belt and material through upward support, ensuring that the synchronous belt always maintains a flat transmission surface and avoiding local depressions or skewed posture of the silicone strip due to belt sagging.

[0038] The industrial control all-in-one machine 10 in this solution adopts an integrated structure with PLC as the core control unit and human-machine interaction module. The PLC module specifically includes an industrial-grade programmable logic controller (PLC, such as Siemens S7-1200 series or Mitsubishi FX5 series) as the core of data processing and motion control. It has the following functions: (1) receiving manually input weight data (actual weight value or weight difference); (2) storing preset parameters (such as the standard weight value of solid silicone block, the corresponding coefficient of weight and cutting length, allowable error threshold, etc.); (3) executing preset calculation programs (such as adjusting the next cutting parameters according to the input weight value); (4) outputting control signals to the actuator (such as controlling the start and stop and speed of the synchronous belt motor, and the extension and retraction of cylinder 53). (5) The PLC is connected to external devices through internal I / O interfaces, for example: receiving input signals from the keyboard or touch screen through the digital input interface, and driving relays to control the cutting mechanism through the digital output interface.

[0039] The human-machine interface module includes an integrated physical numeric keypad or a touchscreen virtual keypad for workers to manually input weight data. It is equipped with a 5-10 inch industrial touchscreen that displays the following information in real time: preset standard weight, currently input weight value, calculation results (such as the amount to be adjusted for the next cutting length), and equipment operating status.

[0040] There are also a power module and a storage module. The storage module can be used to store preset parameters, historical input data and operation logs for a long time.

[0041] Based on the above PLC structure, those skilled in the art can use conventional PLC programming languages ​​such as ladder diagrams and structured text to preset the following calculation logic to achieve the correlation control between weight data and cutting parameters: Preset parameters: Standard weight value G0 (e.g., 150.0g), cutting length coefficient corresponding to unit weight. K (e.g., 1g corresponds to 10mm, i.e.) K =10mm / g).

[0042] Staff enter actual weight G 实 (e.g., 148.0g); PLC automatically calculates the weight deviation Δ G=G 实 -G0 (e.g., 150.0g - 148.0g = 2g); next cutting length L =Δ G × K ( L =2×10mm=20mm).

[0043] In fact, the industrial control all-in-one computer 10 can obtain the initial total length of the solid silicone strip 9 and the target length for each cut, so as to calculate the remaining length of the solid silicone strip 9 on the conveyor belt 33 in real time. If the remaining length of the solid silicone strip 9 on the conveyor belt is less than the next cut length, it will remind the staff to replace the solid silicone strip 9.

[0044] The spare solid silicone strip 9 is pre-loaded on the adhesive tape, waiting for the staff to pick it up and transfer it to the conveyor belt 33. In order to facilitate the staff to pick up the solid silicone strip 9, the bracket 2 is provided with a cloth support plate 81 located below the conveyor belt 33 and erected vertically. The cloth support plate 81 is provided with thumbtacks 82. The cloth support plate 81 on the bracket 2 forms a temporary placement carrier by being set vertically (perpendicular to the horizontal plane). The thumbtacks 82 fixed on its surface are used to pierce and fix the adhesive paper carrying the spare solid silicone strips 9. The staff can fix the roll or sheet of adhesive paper (with spare solid silicone strips 9 pasted on it at intervals) to the cloth support plate 81 in advance with the thumbtacks 82 (the thumbtacks 82 pierce the non-silicone area of ​​the edge of the adhesive paper to avoid damaging the silicone strips), so that the adhesive paper is kept in an unfolded and flat state. When the remaining length of the solid silicone strips 9 on the conveyor belt 33 is insufficient, the staff can directly take the spare silicone strips from the adhesive paper on the cloth support plate 81 with both hands and quickly transfer them to the conveyor belt 33 to complete the loading. After taking them, the adhesive paper is still fixed to the cloth support plate 81 with the thumbtacks 82 for easy subsequent continuous use.

[0045] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A solid silicone weighing and feeding mechanism, characterized in that, The device includes an electronic scale, a support frame, a drive wheel and a driven wheel rotatably mounted on the support frame, a conveyor belt wound around the drive wheel and the driven wheel, a cutting platform connected to the conveyor end of the conveyor belt, a cutter mounted above the cutting platform, and a cutting drive mechanism for driving the cutter to move vertically and cooperating with the cutting platform to cut solid silicone strips. One end of the axle of the drive wheel is connected to a servo motor, and the other end is connected to a meter counter. The cutting drive mechanism, the servo motor, and the meter counter are electrically connected to an industrial control integrated machine.

2. The solid silicone weighing and feeding mechanism according to claim 1, characterized in that, The cutting drive mechanism includes a support plate mounted on a bracket and a cylinder mounted vertically downward on the support plate. The piston rod end of the cylinder is connected to the cutter. When the cylinder drives the cutter to descend, the cutter is misaligned with the cutting platform to cut the solid silicone extending from the cutting platform.

3. The solid silica gel weighing and feeding mechanism according to claim 1, characterized in that, The support is equipped with a device to guide the cut solid silicone block to slide into the feed hopper of the electronic scale.

4. The solid silica gel weighing and feeding mechanism according to claim 1, characterized in that, The support frame is provided with a baffle bar located beside the conveyor belt, and the baffle bar extends along the length of the conveyor belt.

5. The solid silicone weighing and feeding mechanism according to claim 1, characterized in that, The driving wheel and driven wheel are synchronous belt pulleys, and the conveyor belt is a synchronous belt.

6. The solid silicone weighing and feeding mechanism according to claim 5, characterized in that, A guide wheel for supporting the conveyor belt is provided between the driving wheel and the driven wheel.

7. The solid silica gel weighing and feeding mechanism according to any one of claims 1-6, characterized in that, The support frame is provided with a fabric support plate located below the conveyor belt and erected vertically, and the fabric support plate is provided with thumbtacks.

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