Rubber raw material quality detection device for sealing element

Abstract

The invention discloses a rubber raw material quality detection device for a sealing element, which comprises a rack, height adjusting rod assemblies are arranged on two sides of the rack, and a plurality of quality detection assemblies are matched on the height adjusting rod assemblies. If bubbles exist in the rubber plate or the height of the rubber plate exceeds the maximum error value, the rubber plate pushes the extension touch plate to enable the elastic pressing sheet to slide towards one end of the second electrical connector, so that the resistance in the line where the sliding variable resistance assembly is located is reduced, the current is increased, and a current monitoring module in a main circuit in the parallel circuit measures the current of the main circuit to monitor the current of the second electrical connector. And the quality condition of the rubber plate is judged, and an alarm is given out through the control module, so that the specific position of the defective product can be quickly positioned, an operator can quickly process the defective product, the subsequent delimiting of the position of the cut rubber sealing element is facilitated, and the resource waste is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber sealing component detection, and in particular relates to a quality detection device for rubber raw materials used in sealing components. Background Art

[0002] The cutting and manufacturing process of rubber seals is an important part in the production process of rubber seals. It involves cutting the molded rubber seals into specified sizes and shapes to meet different usage requirements.

[0003] Preparation before cutting: 1. Product design and planning, determine the shape, size and quantity of rubber seals according to customer needs and product design drawings, and provide basic data for cutting work; 2. Tool and equipment preparation, select appropriate cutting tools and equipment, such as cutting machines, cutting knives, molds, etc., and ensure that they are in good working condition; 3. Raw material inspection, conduct preliminary inspection of the molded rubber sheet to ensure that its quality meets the cutting requirements, such as no defects (bubbles, dents, etc.) and accurate size.

[0004] However, in the production of existing equipment, the thickness of the rolled product is usually measured manually using a thickness gauge. Although this method has high accuracy, the measurement range of the height gauge is small, so the area that personnel can measure in a single operation is limited. In addition, it is difficult to measure the middle part of the product strip during manual measurement. Therefore, the efficiency of manual measurement is not high and cannot be synchronized with the production speed of the equipment. At the same time, there are certain blind spots in manual measurement, so that the product cannot be fully tested for quality.

[0005] In addition, in the existing production, the randomness of bubbles generated during product production makes the cost of precision machinery or high-precision equipment to detect too high, so this inspection is mostly done manually. Through observation, personnel can find bubbles that exceed the specifications and puncture them. However, since the intuitive effect of bubbles of consistent color on the material belt is not obvious, visual fatigue is easy to occur during personnel inspection, resulting in omissions during inspection, affecting the production quality of rubber sheets.

[0006] Therefore, it is necessary to provide a quality detection device for rubber raw materials for seals that can detect, upload and record through intelligent sensors. Summary of the invention

[0007] The object of the present invention is to provide a device for detecting the quality of rubber raw materials for sealing components, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber raw material quality inspection device for sealing parts, comprising a frame, height adjustment rod assemblies are arranged on both sides of the frame, a plurality of quality inspection assemblies are matched on the height adjustment rod assemblies, a detection positioning plate is arranged below the quality inspection assemblies, the quality inspection assemblies comprise a spring inner ring fixing plate fixedly connected to the height adjustment rod assembly at one end, a spring outer ring elastic plate is integrally connected to the other end of the spring inner ring fixing plate, an extension touch plate is fixedly connected to the end of the spring outer ring elastic plate, a micrometer is arranged between the inner wall of the spring outer ring elastic plate and the outer wall of the spring inner ring fixing plate, and the micrometer is fixedly connected to the spring outer ring elastic plate, and a sliding variable resistance assembly is fixed to the upper end surface of the spring inner ring fixing plate;

[0009] The sliding variable resistor assembly includes an insulating mounting plate fixed on the upper end surface of the spring inner ring fixing plate, a resistance wire is fixedly mounted on the insulating mounting plate, a fixing rod is provided above the resistance wire, and one end of the fixing rod passes through the spring inner ring fixing plate and is fixedly connected to the spring outer ring elastic plate, an elastic pressing plate is provided at the other end of the fixing rod, and the elastic pressing plate and the resistance wire form a matching mechanism, a second electrical connector is provided at the end of the resistance wire away from the elastic pressing plate, and a first electrical connector is provided on the elastic pressing plate.

[0010] Furthermore: the spring inner ring fixing plate, the spring outer ring elastic plate and the extended contact plate constitute a vortex spring, and the micrometer is used for the vortex distance between the spring inner ring fixing plate and the spring outer ring elastic plate.

[0011] Furthermore: the sliding variable resistance components in the plurality of quality detection components are connected in parallel via the second electrical connector and the first electrical connector, and a current monitoring module is electrically connected in the parallel circuit.

[0012] Furthermore: the detection positioning plate includes a positioning plate fixed on the frame, the two ends of the positioning plate are arc-shaped, a plurality of air holes are opened on the upper end surface of the positioning plate, an air bin is fixed under the positioning plate, and an exhaust interface is provided at the bottom of the air bin.

[0013] Furthermore: the quality inspection component also includes a fixed mounting plate arranged below the sliding variable resistance component, and one end of the fixed mounting plate is fixed on the height adjustment rod assembly, and the other end of the fixed mounting plate is rotatably matched with a swing touch rod assembly, the swing touch rod assembly is provided with a fixed switch assembly which is a matching mechanism with the swing touch rod assembly, and the fixed switch assembly is fixed on a side wall of the fixed mounting plate.

[0014] Furthermore: the fixed switch assembly includes a fixed switch fixed on the fixed mounting plate, and a third electrical connector is fixed to one end of the fixed switch.

[0015] Furthermore: the swing touch rod assembly includes a fixed shaft rod fixed to one end of the fixed mounting plate, a shaft sleeve is sleeved on the outer wall of the fixed shaft rod, and a torsion spring is provided between the shaft sleeve and the fixed shaft rod, a swing touch rod is fixed to one end of the shaft sleeve, and one end of the swing touch rod is a matching mechanism with the fixed switch, a fourth electrical connector is fixed on the swing touch rod, a support rod is fixed below the shaft sleeve, and one end of the support rod is rotatably matched with a monitoring roller.

[0016] Furthermore: a plurality of annular protrusions are arranged on the outer wall of the monitoring roller, and a plurality of notches matching with the annular protrusions arranged on the outer wall of the monitoring roller are arranged on the bottom arc of the extended touch plate.

[0017] Furthermore: the sliding variable resistance components in the plurality of quality detection components are connected in parallel via the second electrical connector and the first electrical connector, and a current monitoring module is connected in series in each branch, and the current monitoring module in each branch is electrically connected to the control module respectively.

[0018] Furthermore: the fixed switch components and the swing contact rod components provided in the plurality of quality detection components are connected in series via the fourth electrical connector and the third electrical connector, and a current monitoring module is electrically connected in the series circuit.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The quality detection component provided in the present invention, when the rubber sheet passes through the quality detection component, if there are bubbles in the rubber sheet or the height of the rubber sheet exceeds the maximum error value, the rubber sheet pushes the extended touch plate to deflect the extended touch plate. When the extended touch plate deflects, the fixed rod is driven to move in the moving direction of the rubber sheet, so that the elastic pressing sheet slides toward one end of the second electrical connector, thereby reducing the resistance in the circuit where the sliding variable resistance component is located and increasing the current. The current monitoring module in the main circuit of the parallel circuit detects the unevenness of the bubbles in the rubber sheet through the physical contact between the extended touch plate and the rubber sheet, and changes the state of the extended touch plate by using the friction between the rubber sheet and the extended touch plate, thereby causing the entire spring sheet to undergo physical deformation, and then amplifies the physical change signal by using an electrical signal and transmits it to the control module. The control module then analyzes the quality status of the rubber sheet to obtain a result and sends an alarm signal.

[0021] 2. The fixed switch assembly and the swing contact rod assembly provided in the present invention are provided with a displacement monitoring module at the closing position of each group of the fixed switch assembly and the swing contact rod assembly. The control module determines whether the thickness of the rubber sheet meets the standard through the closing state sensed by the displacement monitoring module. If it does not meet the standard, the non-standard area is marked and uploaded to the control module via the network. In this way, the specific position of the defective product can be quickly located, so that the operating personnel can quickly deal with the defective product, and it is also conducive to the subsequent demarcation of the position for cutting the rubber seal and reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of a rubber raw material quality detection device for seals of the present invention;

[0024] Figure 2 It is a top view of a quality inspection device for rubber raw materials used in seals of the present invention;

[0025] Figure 3 The present invention Figure 2 Sectional view along AA;

[0026] Figure 4 The present invention Figure 3 Magnified view of area B;

[0027] Figure 5 It is a structural schematic diagram of the quality detection component of the present invention;

[0028] Figure 6 The present invention Figure 5 Magnified view of area C in the middle;

[0029] Figure 7 The present invention Figure 5 Magnified view of area D in the middle;

[0030] Figure 8 It is a schematic diagram of the debugging principle of the quality detection component of the present invention;

[0031] Fig. 9 Schematic diagram of circuit connection of sliding variable resistance assembly embodiment 1 of the present invention;

[0032] Fig.10 It is a circuit connection diagram of the sliding variable resistance component embodiment 2 of the present invention.

[0033] Fig.11 It is a circuit connection diagram of the swing touch rod assembly embodiment 1 of the present invention.

[0034] Fig.12 The present invention is a schematic diagram of the detection process of a rubber raw material quality detection device for sealing components.

[0035] In the accompanying drawings: 1, rack; 2, detection positioning plate; 3, height adjustment rod assembly; 4, quality inspection assembly; 5, calibration mold; 21, positioning plate; 22, air chamber; 23, exhaust interface; 31, adjustment support rod; 32, detection assembly mounting plate; 41, spring inner ring fixing plate; 42, spring outer ring elastic plate; 43, extension touch plate; 44, micrometer; 45, sliding variable resistance assembly; 46, fixed mounting plate; 47, fixed switch assembly; 48, swing touch rod assembly; 5 1. Schematic diagram of thickness error upper limit; 52. Schematic diagram of steam drum; 53. Schematic diagram of thickness error lower limit; 451. Fixed rod; 452. Elastic pressure piece; 453. First electrical connector; 454. Insulating mounting plate; 455. Resistance wire; 456. Second electrical connector; 471. Fixed switch; 472. Third electrical connector; 481. Monitoring roller; 482. Support rod; 483. Bushing; 484. Swinging contact rod; 485. Fourth electrical connector; 486. Fixed shaft. DETAILED DESCRIPTION

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1-Figure 12As shown, a rubber raw material quality inspection device for sealing parts includes a frame 1, which is arranged between the discharge port of a rubber plate calender or vulcanizer and a material winding mechanism, and height adjustment rod assemblies 3 are arranged on both sides of the frame 1. The height adjustment rod assembly 3 is equipped with multiple quality inspection assemblies 4, and the height adjustment rod assembly 3 includes an adjustment support rod 31 and a detection assembly mounting plate 32. The adjusting support rod 31 is used to fine-tune the overall height of the detection component mounting plate 32. A detection positioning plate 2 is provided below the quality detection component 4. The detection positioning plate 2 is a detection reference. The position of the detection positioning plate 2 is fixed. The contact surface between the detection positioning plate 2 and the material is subjected to a mirror polishing process to reduce the detection error. The quality detection component 4 includes a spring inner ring fixing plate 41 fixedly connected to the height adjustment rod component 3 at one end. The spring inner ring fixing plate 41 plays a role of fixed support. The other end of the spring inner ring fixing plate 41 is integrally connected to the spring outer ring elastic plate 42. The spring inner ring fixing plate 41 and the spring outer ring elastic plate 42 are an integrated vortex structure. The end of the spring outer ring elastic plate 42 is fixedly connected to an extended touch plate 43 The rubber plate to be detected passes through the bottom arc surface of the extended touch plate 43 and the detection positioning plate 2. The elastic structure composed of the spring inner ring fixing plate 41, the spring outer ring elastic plate 42 and the extended touch plate 43 makes it easier for the extended touch plate 43 to deflect under the action of external force. A micrometer 44 is provided between the inner wall of the spring outer ring elastic plate 42 and the outer wall of the spring inner ring fixing plate 41, and the micrometer 44 is fixedly connected to the spring outer ring elastic plate 42. Adjusting the micrometer 44 can change the spiral pitch between the spring outer ring elastic plate 42 and the spring inner ring fixing plate 41, thereby adjusting the distance between the bottom arc surface of the extended touch plate 43 and the detection positioning plate 2. The upper end surface of the spring inner ring fixing plate 41 is fixed with a sliding variable resistance component 45;

[0039] The sliding variable resistance assembly 45 includes an insulating mounting plate 454 fixed to the upper end surface of the spring inner ring fixing plate 41, and a resistance wire 455 is fixedly mounted on the insulating mounting plate 454. A fixing rod 451 is provided above the resistance wire 455, and one end of the fixing rod 451 passes through the spring inner ring fixing plate 41 and is fixedly connected to the spring outer ring elastic plate 42. A clearance hole is opened on an outer wall of the spring inner ring fixing plate 41. The fixing rod 451 passes through the clearance hole. When the extended touch plate 43 is deflected, the fixing rod 451 is driven to move. An elastic pressing piece 452 is provided at the other end of the fixing rod 451, and the elastic pressing piece 452 and the resistance wire 455 are a matching mechanism. The elastic pressing piece 452 arranged on the fixing rod 451 is always in contact with the resistance wire 455 under the elastic action of its own structure, and a sliding variable resistance circuit is formed on the resistance wire 455. A second electrical connector 456 is provided at one end of the resistance wire 455 away from the elastic pressing piece 452, and a first electrical connector 453 is provided on the elastic pressing piece 452.

[0040] As an embodiment of the present invention, Figure 4-7As shown: the sliding variable resistor components 45 in the multiple quality detection components 4 are connected in parallel through the second electrical connector 456 and the first electrical connector 453, and a current monitoring module is electrically connected in the parallel circuit. The current monitoring module includes an integrated current sensor and other intelligent sensor components that need to be used, etc., which are mainly used for current detection and upload the detection results to the control module (the control module is an integrated data processing center that can receive signals and issue corresponding work instructions to each module). When detecting rubber plates, multiple groups of quality detection components 4 are needed. Through the 24V weak current line commonly used in the equipment, the multiple groups of sliding variable resistor components 45 are connected in parallel in a manner of connecting the positive pole to the second electrical connector 456 and the negative pole to the first electrical connector 453, and the current monitoring module is connected in series in the main circuit of the parallel circuit to monitor the current changes in the parallel circuit. Finally, the data is transmitted to the control module commonly used in the automation equipment through the network for recording and preservation.

[0041] As an embodiment of the present invention, Figure 2-4 As shown: the detection positioning plate 2 includes a positioning plate 21 fixed on the frame 1, the two ends of the positioning plate 21 are arc-shaped, and a plurality of air holes are provided on the upper end surface of the positioning plate 21. An air bin 22 is fixed below the positioning plate 21, and an exhaust interface 23 is provided at the bottom of the air bin 22. The upper end surface and the surrounding side of the positioning plate 21 are mirror-polished, and the feed end and the discharge end are arc-shaped, which is conducive to the movement of the rubber plate. The exhaust interface 23 is externally connected to a vacuum generator, and negative pressure is formed in the air bin 22 by exhausting air. When the rubber plate passes through the upper end surface of the positioning plate 21, the rubber plate is adsorbed by the air holes provided on the positioning plate 21 to prevent the rubber plate from bulging and wrinkling during movement, thereby affecting the thickness detection.

[0042] When doing specific work, use Figure 8The calibration mold 5 shown in the figure is used to calibrate the quality inspection component 4. The thickness error upper limit schematic area 51 of the calibration mold 5 is placed between the extended touch plate 43 and the positioning plate 21. The micrometer 44 is adjusted so that the arc bottom of the extended touch plate 43 is tangent to the upper end surface of the thickness error upper limit schematic area 51 of the calibration mold 5. At this time, the height between the bottom of the extended touch plate 43 and the positioning plate 21 is the maximum passing height. When the rubber plate passes through the quality inspection component 4, if there are bubbles in the rubber plate or the height of the rubber plate exceeds the maximum error value, the rubber plate pushes the extended touch plate 43, causing the extended touch plate 43 to Deflection. When the extended touch plate 43 deflects, it drives the fixed rod 451 to move in the moving direction of the rubber plate, so that the elastic pressing piece 452 slides toward one end of the second electrical connector 456, thereby reducing the resistance in the circuit where the sliding variable resistance component 45 is located and increasing the current. The current monitoring module in the main circuit of the parallel circuit determines the quality of the rubber plate by measuring the main current and sends an alarm through the control module: if the current of multiple groups of sliding variable resistance components 45 changes and the main circuit current changes greatly, the thickness of the rubber plate exceeds the standard; if the current of a few sliding variable resistance components 45 changes little, there are bubbles in the rubber plate.

[0043] As an embodiment of the present invention, Figure 4-7 As shown: the quality detection component 4 also includes a fixed mounting plate 46 arranged below the sliding variable resistance component 45, and one end of the fixed mounting plate 46 is fixed on the height adjustment rod component 3, and the other end of the fixed mounting plate 46 is rotatably matched with a swing touch rod component 48, and the swing touch rod component 48 is provided with a fixed switch component 47 that is a matching mechanism with the swing touch rod component 48, and the fixed switch component 47 is fixed on a side wall of the fixed mounting plate 46, and the fixed switch component 47 includes a fixed switch 471 fixed on the fixed mounting plate 46, and the matching end of the fixed switch 471 and the swing touch rod component 48 is fixed with a spring pressing piece, and one end of the fixed switch 471 is fixed with a third electrical connector 472, and the third electrical connector 472 is electrically connected to the spring pressing piece, and the swing touch rod component 4 8 includes a fixed shaft rod 486 fixed to one end of the fixed mounting plate 46, a shaft sleeve 483 is sleeved on the outer wall of the fixed shaft rod 486, and a torsion spring is provided between the shaft sleeve 483 and the fixed shaft rod 486, a swinging touch rod 484 is fixed to one end of the shaft sleeve 483, and one end of the swinging touch rod 484 is a matching mechanism with the fixed switch 471, the matching point between the swinging touch rod 484 and the fixed switch 471 is elastic contact, and is electrically connected through an elastic sheet, and under the action of the torsion spring, the swinging touch rod 484 has a tendency to move away from the fixed switch 471, and a fourth electrical connector 485 is fixed to the swinging touch rod 484, and a support rod 482 is fixedly welded to the lower outer wall of the shaft sleeve 483, and the end of the support rod 482 is an L-shaped shaft rod, and a monitoring roller 481 is rotatably matched on the shaft rod.

[0044] As an embodiment of the present invention, Figure 7As shown: a plurality of annular protrusions are provided on the outer wall of the monitoring roller 481, and a plurality of notches that cooperate with the annular protrusions provided on the outer wall of the monitoring roller 481 are opened on the bottom arc of the extended touch plate 43. When the monitoring roller 481 cooperates with the extended touch plate 43, the bottom of the annular protrusions exceeds the notch, and the annular protrusions provided on the monitoring roller 481 are made of a flexible material that can be deformed.

[0045] As an embodiment of the present invention, Fig.11 As shown: the fixed switch components 47 and the swinging touch rod components 48 provided in the multiple quality detection components 4 are connected in series through the fourth electrical connector 485 and the third electrical connector 472, and a current monitoring module is electrically connected in the series circuit. The multiple fixed switch components 47 and the swinging touch rod components 48 are connected in series through the 24V weak current circuit commonly used in the equipment with the positive pole connected to the fourth electrical connector 485 and the negative pole connected to the third electrical connector 472, and the current monitoring module is connected in series in the main circuit to monitor the current changes in the parallel circuit, and transmit the data to the control module commonly used in the automation equipment for storage via the network.

[0046] When doing specific work, use Figure 8 The calibration mold 5 shown in the figure is used to calibrate the quality inspection component 4. The front end of the calibration mold 5 is provided with an inclined surface, and the inclined surface corresponds to the thickness error lower limit schematic area 53 at the lower end of the monitoring roller 481. The inclined surface of the calibration mold 5 is matched with the thickness error lower limit schematic area 53, and a monitoring roller 481 of a suitable size is selected so that the annular protrusion provided on the monitoring roller 481 is tangent to the front end inclined surface of the calibration mold 5. At this time, the distance between the lower end surface of the monitoring roller 481 and the positioning plate 21 is the minimum thickness of the rubber sheet. When the rubber sheet passes through the quality inspection component 4, when a rubber sheet of normal thickness passes, the rubber sheet pushes the monitoring roller 481. When measuring roller 481, the swing contact rod 484 and the fixed switch 471 are closed. If the height of the rubber sheet is lower than the minimum error value, the monitoring roller 481 is separated from the push of the rubber sheet. Under the action of the torsion spring, the shaft sleeve 483 is deflected to drive the swing contact rod 484 to separate from the fixed switch 471, thereby disconnecting the circuit formed by the fixed switch assembly 47 and the swing contact rod assembly 48. The current monitoring module in the series circuit determines the quality of the rubber sheet by measuring the main current, and issues an alarm through the control module. The area where the thickness does not meet the standard is determined by observing the closing status of each group of fixed switch assemblies 47 and the swing contact rod assemblies 48.

[0047] The second embodiment, as Fig.10 , 12As shown: the sliding variable resistance components 45 in the multiple quality detection components 4 are connected in parallel through the second electrical connector 456 and the first electrical connector 453, and the current monitoring module is connected in series in each branch, and the current monitoring module in each branch is electrically connected to the control module. A current monitoring module is provided in each branch sliding variable resistance component 45, and the control module determines the location where bubbles are generated or the area where the thickness exceeds the standard through multiple current monitoring data, so that the operating personnel can find problems in time and analyze the defective products to adjust the production process;

[0048] A displacement monitoring module is provided at the closed position of the fixed switch assembly 47 and the swing contact rod assembly 48 in the multiple quality detection assemblies 4. The control module senses the closed state of 48 through the displacement monitoring module to determine whether the thickness of the rubber sheet meets the standard. If not, the non-standard area is marked at the same time.

[0049] The working principle and use process of the present invention are as follows: the device is used to perform quality inspection on the stretched vulcanized rubber sheet used for cutting seals. The material to be inspected is connected to the equipment. When the rubber sheet passes through the quality inspection component 4, if there are bubbles in the rubber sheet or the height of the rubber sheet exceeds the maximum error value, the rubber sheet pushes the extended touch plate 43 to deflect the extended touch plate 43. When the extended touch plate 43 deflects, it drives the fixed rod 451 to move in the moving direction of the rubber sheet, so that the elastic pressing sheet 452 slides toward one end of the second electrical connector 456, thereby reducing the resistance in the circuit where the sliding variable resistance component 45 is located and increasing the current. The current monitoring module in the main circuit of the parallel circuit determines the quality of the rubber sheet by measuring the main circuit current, and issues an alarm through the control module: if the current of multiple groups of sliding variable resistance components 45 changes, and the main circuit current changes greatly, then the thickness of the rubber sheet exceeds the standard, and if the current of a few sliding variable resistance components 45 changes little, then there are bubbles in the rubber sheet;

[0050] When the rubber sheet passes through the quality inspection component 4, when the rubber sheet of normal thickness passes, the swinging contact rod 484 and the fixed switch 471 are closed when the rubber sheet pushes the monitoring roller 481. If the height of the rubber sheet is lower than the minimum error value, the monitoring roller 481 is separated from the push of the rubber sheet. Under the action of the torsion spring, the shaft sleeve 483 is deflected to drive the swinging contact rod 484 to separate from the fixed switch 471, thereby disconnecting the circuit formed by the fixed switch component 47 and the swinging contact rod component 48. The current monitoring module in the series circuit determines the quality of the rubber sheet by measuring the main current, and issues an alarm through the control module. The thickness substandard area is determined by observing the closing status of each group of fixed switch components 47 and the swinging contact rod components 48.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A quality inspection device for rubber raw materials for sealing parts, comprising a frame (1), height adjustment rod assemblies (3) are provided on both sides of the frame (1), a plurality of quality inspection assemblies (4) are matched on the height adjustment rod assemblies (3), and a detection positioning plate (2) is provided below the quality inspection assemblies (4), characterized in that: The quality inspection component (4) comprises a spring inner ring fixing plate (41) having one end fixedly connected to the height adjustment rod component (3); the other end of the spring inner ring fixing plate (41) is integrally connected to a spring outer ring elastic plate (42); the end of the spring outer ring elastic plate (42) is fixedly connected to an extended touch plate (43); a micrometer (44) is provided between the inner wall of the spring outer ring elastic plate (42) and the outer wall of the spring inner ring fixing plate (41); the micrometer (44) is fixedly connected to the spring outer ring elastic plate (42); and a sliding variable resistance component (45) is fixedly provided on the upper end surface of the spring inner ring fixing plate (41); The sliding variable resistance assembly (45) comprises an insulating mounting plate (454) fixed on the upper end surface of the spring inner ring fixing plate (41), a resistance wire (455) is fixedly mounted on the insulating mounting plate (454), a fixing rod (451) is arranged above the resistance wire (455), one end of the fixing rod (451) penetrates the spring inner ring fixing plate (41) and is fixedly connected to the spring outer ring elastic plate (42), the other end of the fixing rod (451) is provided with an elastic pressing sheet (452), and the elastic pressing sheet (452) and the resistance wire (455) form a matching mechanism, a second electrical connector (456) is arranged at one end of the resistance wire (455) away from the elastic pressing sheet (452), and a first electrical connector (453) is arranged on the elastic pressing sheet (452).

2. A rubber raw material quality detection device for seals according to claim 1, characterized in that: The spring piece inner ring fixing plate (41), the spring piece outer ring elastic plate (42) and the extended contact plate (43) form a vortex spring piece, and the micrometer (44) is used for measuring the vortex distance between the spring piece inner ring fixing plate (41) and the spring piece outer ring elastic plate (42).

3. A rubber raw material quality detection device for seals according to claim 1, characterized in that: The sliding variable resistance components (45) in the plurality of quality detection components (4) are connected in parallel via the second electrical connector (456) and the first electrical connector (453), and a current monitoring module is electrically connected in the parallel circuit.

4. A rubber raw material quality detection device for seals according to claim 3, characterized in that: The detection positioning plate (2) comprises a positioning plate (21) fixed on the frame (1), the two ends of the positioning plate (21) are arc-shaped, a plurality of air holes are provided on the upper end surface of the positioning plate (21), an air bin (22) is fixed below the positioning plate (21), and an exhaust port (23) is provided at the bottom of the air bin (22).

5. A rubber raw material quality detection device for seals according to claim 1, characterized in that: The quality detection component (4) also includes a fixed mounting plate (46) disposed below the sliding variable resistance component (45), and one end of the fixed mounting plate (46) is fixed to the height adjustment rod component (3), and the other end of the fixed mounting plate (46) is rotatably matched with a swinging touch rod component (48), and the swinging touch rod component (48) is provided with a fixed switch component (47) that is a matching mechanism with the swinging touch rod component (48), and the fixed switch component (47) is fixed to a side wall of the fixed mounting plate (46).

6. A quality inspection device for rubber raw materials for seals according to claim 5, characterized in that: The fixed switch assembly (47) comprises a fixed switch (471) fixed on the fixed mounting plate (46), and a third electrical connector (472) is fixed to one end of the fixed switch (471).

7. A quality detection device for rubber raw materials for seals according to claim 6, characterized in that: The swing contact rod assembly (48) includes a fixed shaft rod (486) fixed to one end of a fixed mounting plate (46), a shaft sleeve (483) is sleeved on the outer wall of the fixed shaft rod (486), and a torsion spring is provided between the shaft sleeve (483) and the fixed shaft rod (486), a swing contact rod (484) is fixed to one end of the shaft sleeve (483), and one end of the swing contact rod (484) is a matching mechanism with a fixed switch (471), a fourth electrical connector (485) is fixed to the swing contact rod (484), a support rod (482) is fixed below the shaft sleeve (483), and one end of the support rod (482) is rotatably matched with a monitoring roller (481).

8. A device for detecting quality of rubber raw materials for seals according to claim 7, characterized in that: The outer wall of the monitoring roller (481) is provided with a plurality of annular protrusions, and the bottom arc of the extended touch plate (43) is provided with a plurality of notches that match the annular protrusions provided on the outer wall of the monitoring roller (481).

9. A rubber raw material quality detection device for seals according to claim 1, characterized in that: The sliding variable resistance components (45) in the plurality of quality detection components (4) are connected in parallel via the second electrical connector (456) and the first electrical connector (453), and a current monitoring module is connected in series in each branch, and the current monitoring module in each branch is electrically connected to the control module respectively.

10. A device for detecting quality of rubber raw materials for seals according to claim 8, characterized in that: The fixed switch assembly (47) and the swing contact rod assembly (48) provided in the plurality of quality detection assemblies (4) are connected in series via a fourth electrical connector (485) and a third electrical connector (472), and a current monitoring module is electrically connected in the series circuit.

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