Four-column mould pressing electromagnetic heating capsule vulcanizing machine and capsule inspection method

Abstract

The invention discloses a four-column mould pressing electromagnetic heating capsule vulcanizing machine which comprises a four-column rack, an electromagnetic heating module and a control mechanism, an upper cross beam is mounted at the top of the four-column rack, a lower cross beam is mounted in the middle of the four-column rack, and a base is mounted at the bottom of the four-column rack; the electromagnetic heating module comprises an inner ring electromagnetic heating assembly, a core mold, an outer mold, an outer ring electromagnetic heating assembly, a magnetic field isolation barrier and a shell which are sequentially arranged from inside to outside, the upper half shell and the upper half outer mold are both fixedly installed below an upper cross beam, a center pull rod is installed on the upper cross beam, and pull-up oil cylinders are symmetrically installed on the center pull rod left and right; the control mechanism comprises a vulcanizing machine electric control cabinet and a vulcanizing machine electromagnetic heating control cabinet; the invention further provides a capsule inspection method. The capsule inspection method comprises the following steps: step S1, recording vulcanization time and energy cost required for vulcanizing the capsule; and S2, taking two pieces at each of the upper part and the lower part of the capsule for a length tensile experiment. The method has the advantages of high efficiency, energy conservation, high product quality, improvement of the service life of the capsule, improvement of the safety of the capsule and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electromagnetic heating, and particularly relates to a four-column type mold pressing electromagnetic heating capsule vulcanization machine and a capsule inspection method. BACKGROUND

[0002] In the tire production process, the capsule is a core component of the tire vulcanization machine, and its performance directly determines the tire vulcanization quality, production efficiency and production cost, and is called the "core carrier" of the tire vulcanization process. A high-quality capsule has a higher vulcanization cycle number and a lower production cost. For decades, domestic and foreign capsule vulcanization has been using steam vulcanization. Since steam can cause water to remain in the lower mold under the mold, it causes uneven temperature during vulcanization, long vulcanization time, large temperature difference ±5℃, uneven tensile strength, poor product quality, low use frequency and other problems. The use frequency of the capsule needs to be specified within a safe range. However, due to uneven tensile strength, the capsule is easily damaged locally in the early stage, which can cause tire scrapping and the ejection of high-temperature medium from the capsule into the vulcanization machine, causing injuries and other accidents, which poses a great safety hazard. At the same time, the boiler heat utilization rate is 90%, the steam transmission heat loss is 10%, the mold machine heat loss is 20%, the condensate water takes away 20%, and the steam used for vulcanization products accounts for only 40%. The final energy utilization rate is only 40%, and the energy loss is huge. SUMMARY

[0003] The application aims to provide a four-column type mold pressing electromagnetic heating capsule vulcanization machine, which can ensure uniform tensile strength of the capsule, reduce the vulcanization time, improve the vulcanization efficiency, and solve the problems of long vulcanization time, large temperature difference, uneven product properties, poor product quality, low use frequency and large energy loss caused by steam vulcanization of the capsule.

[0004] Therefore, the technical solution adopted by this invention is as follows: a four-column molded electromagnetic heating capsule vulcanizing machine, comprising a four-column frame, an electromagnetic heating module, and a control mechanism. The four-column frame has an upper crossbeam installed at the top, a lower crossbeam installed in the middle, and a base installed at the bottom. The electromagnetic heating module includes, from the inside out, an inner ring electromagnetic heating component, a core mold, an outer mold, an outer ring electromagnetic heating component, a magnetic field isolation barrier, and a shell. A cavity for placing the capsule is left between the core mold and the outer mold, which are in a closed state. The inner ring electromagnetic heating component and the outer ring electromagnetic heating component are respectively connected to the core mold, the outer mold, and the outer mold. The outer mold is shaped and matched. The core mold includes an upper core mold and a lower core mold. The outer mold includes an upper outer mold and a lower outer mold. The shell includes an upper shell and a lower shell. The upper shell and the upper outer mold are fixedly installed below the upper crossbeam. The upper crossbeam is equipped with a central tie rod that connects downward to the core mold. The central tie rod is symmetrically equipped with lifting cylinders, which provide the driving force for pulling up and releasing the core mold. The lower crossbeam is fixedly connected to the lower shell and the lower outer mold. The lower crossbeam is equipped with a central clamping plate and a clamping plate driving cylinder that provides the lifting driving force for the central clamping plate. The lower crossbeam is symmetrically equipped with mold opening and closing hydraulic cylinders, thereby realizing the overall lifting and moving of the lower crossbeam. The control mechanism includes a vulcanizing machine electrical control cabinet and a vulcanizing machine electromagnetic heating control cabinet.

[0005] As a preferred embodiment of the above scheme, the inner ring electromagnetic heating assembly includes a core mold coil mounting bracket and a core mold coil spirally mounted on the core mold coil mounting bracket, thereby providing temperature for vulcanization on the inner side of the capsule. The inner side of the core mold and the outer side of the outer mold are symmetrically provided with blind holes for mounting temperature sensors, and are equipped with temperature sensors. The outer ring electromagnetic heating assembly includes an upper half mold coil mounting bracket, a lower half mold coil mounting bracket, an upper half mold coil spirally mounted on the upper half mold coil mounting bracket, and a lower half mold coil spirally mounted on the lower half mold coil mounting bracket, thereby providing temperature for vulcanization on the outer side of the capsule.

[0006] The inner and outer rings are heated simultaneously, thus achieving uniform heating inside and out, and the structure is reasonably designed.

[0007] A further preferred embodiment is that the inner ring electromagnetic heating assembly and the outer ring electromagnetic heating assembly are respectively provided with mounting brackets for the temperature sensor to be inserted inward or outward, which is a reasonable design and avoids positional conflicts between the temperature sensor and other components after installation.

[0008] The core mold coil mounting bracket, the upper half mold coil mounting bracket, and the lower half mold coil mounting bracket are all provided with coil through holes, so as to allow the core mold coil, the upper half mold coil, and the lower half mold coil to be spirally installed.

[0009] The upper and lower half-mode coil mounting brackets are provided with wire slots on the outer circumference for placing the temperature sensor data lines, which avoids messy wire harnesses that are difficult to organize and manage, and the structural design is reasonable.

[0010] Further preferably, the core mold coil mounting frame comprises a lantern-shaped framework structure with both ends converging and connecting, a reinforcing connecting plate located at the largest diameter section of the framework structure, and an inner mold wire column frame located at the upper part of the framework structure, which is stable in structure.

[0011] Further preferably, the upper and lower ends of the framework structure are connected through annular blocks, and the reinforcing connecting plate is connected to the annular blocks at the upper and lower ends through connecting columns arranged at intervals in the ring direction, which is stable in structure.

[0012] The inner side of the annular block at the upper end is provided with wire passing holes arranged in pairs and mirror images, the upper part of the wire passing hole is provided with a wire limiting column mounting thread, the reinforcing connecting plate is provided with a weight reduction hole in the ring direction, the inner mold wire column frame is mounted at the bottom end of the annular block at the upper end, and a through hole is provided corresponding to the wire passing hole, the through hole corresponding to the wire passing hole for the coil wire is provided in the form of a circular hole, and a coil terminal seat mounting plate is provided, the annular block at the upper end is provided with a notch for the insertion of the coil terminal seat mounting plate, and the through hole corresponding to the wire passing hole for the sensor wire is provided in the form of an arc-shaped notch, considering that the length of the wire is not consistent, the wire passing holes of different designs are designed, which is ingenious.

[0013] Further preferably, the core mold coil, the upper half mold coil, and the lower half mold coil all adopt copper bars, and the distance between the adjacent copper bars is 80mm-90mm, which effectively avoids the occurrence of mutual interference of electric fields, and the distance between the core mold coil and the inner wall of the core mold, and the distance between the upper half mold coil and the lower half mold coil and the outer wall of the outer mold are all 40mm-50mm, which is the best coupling distance under the alternating magnetic field of 20KHZ frequency and 20KW power.

[0014] Further preferably, the edge of the lower half outer mold is bent outward and upward to form a step that fits with the lower edge of the upper half outer mold, ensuring the sealing performance of the mold, the inner diameter of the upper half shell is smaller than that of the lower half shell, and the bottom end abuts against the lower edge of the upper half outer mold when the mold is closed, the edge of the lower half outer mold extends out of the lower half shell, and the upper half shell and the lower half shell are both provided with a junction box, the core mold coil, the upper half mold coil, and the corresponding temperature sensor wire harness can be led out through the junction box of the upper half shell, and the lower half mold coil and the corresponding temperature sensor wire harness can be led out through the junction box of the lower half shell, thereby allowing the wires to be connected in batches and concentrated, and facilitating the collection and arrangement of the wires.

[0015] Further preferably, a center shaft rod vertically penetrating the inner ring electromagnetic heating assembly is installed in the center of the inner bottom of the lower half core mold, the top of the upper half core mold is provided with a wire outlet hole corresponding to the wire passing hole, and the top of the upper half core mold is provided with a mounting thread hole corresponding to the top end of the center shaft rod in the ring direction, so that the center shaft rod is threadedly connected to the upper half core mold after vertically penetrating the inner ring electromagnetic heating assembly, and the upper half core mold and the lower half core mold are combined and installed, which is convenient and fast to assemble and disassemble, and the structure design is ingenious.

[0016] The magnetic field isolation barrier adopts aluminum or copper skin, and the cost is low, the core mold and the outer mold are provided with four up-down and left-right symmetrical temperature measuring sensor mounting blind holes, one is used and one is standby, and the failure of one temperature measuring sensor is avoided.

[0017] Further preferably, the core mold, the outer mold and the shell are all provided with a mounting vent hole at the center, the center chuck is in the shape of a circular ladder, and the rear edge of the lower half shell and the lower half outer mold can press the inner edge of the bottom end of the capsule, the center pull rod is provided with a gas supply pipeline, the gas supply pipeline is connected with the inner cavity of the core mold, and the center chuck is uniformly provided with an air duct for guiding the air from the gas supply pipeline into the space between the inner wall of the capsule and the core mold, so that the capsule can be blown away from the core mold.

[0018] Further preferably, the base is provided with a guide limiting groove, the lower cross beam is provided with a guide cylinder movably arranged along the guide limiting groove, and the chuck driving oil cylinder is arranged in the inner cavity of the guide cylinder, so that the structure is stable.

[0019] The scheme also provides a capsule inspection method, which comprises the following steps:

[0020] In step S1, the four-column die pressing electromagnetic heating capsule vulcanizing machine and the steam heating capsule vulcanizing machine are compared, and the vulcanization time and energy cost required for vulcanizing one capsule are recorded.

[0021] In step S2, the capsules prepared by the four-column die pressing electromagnetic heating capsule vulcanizing machine are taken as an experimental group, and the capsules prepared by the steam heating capsule vulcanizing machine are taken as a control group, and two pieces of length stretching experiments are respectively conducted on the upper and lower parts of the capsules.

[0022] The beneficial effects of the present application are as follows:

[0023] (1) Compared with the capsule prepared by steam vulcanization, the present scheme adopts electromagnetic heating, the temperature measuring sensor is used to collect the temperature of each measuring point of the core mold and the outer mold in real time during the capsule vulcanization process, the inner and outer heating temperatures are flexibly adjusted through analysis and comparison, the vulcanization temperature control precision is ensured to be ±1℃, so that the uniformity of the tensile strength after electromagnetic vulcanization is good.

[0024] (2) The inner ring electromagnetic heating assembly, the core mold, the outer mold, the outer ring electromagnetic heating assembly, the magnetic field isolation barrier and the shell are sequentially arranged from inside to outside, the inner ring and the outer ring are synchronously heated to realize uniform heating of the inside and the outside, and the application is aimed at the capsule inside and outside heating vulcanization mode, and the service life and safety of the capsule can be improved as a whole.

[0025] (3) The traditional capsule lacks length stretching experiments, so that the temperature cannot be adjusted according to the data to optimize the capsule production quality, the tensile strength of the capsule produced by electromagnetic heating is improved by 6.8% than that of the sample produced by steam heating, the tensile strength deviation is reduced by 45%, and the overall tensile performance of the capsule vulcanized by electromagnetic heating is better than that of the capsule vulcanized by steam.

[0026] In summary, the application has the advantages of high efficiency, energy saving, high product quality, improved service life and safety of the capsule and the like. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a front view of the application in the mold closing state.

[0028] Figure 2 is a front view of the application in the mold opening state.

[0029] Figure 3 is an exploded view of the parts of the electromagnetic heating module.

[0030] Figure 4 is Figure 3 is a partial enlarged view of E of

[0031] Figure 5 is a structure schematic view of the inner ring electromagnetic heating assembly and the core mold.

[0032] Figure 6 is a structure schematic view of the inner ring electromagnetic heating assembly.

[0033] Figure 7 is a sectional view of Figure 6

[0034] Figure 8 is a structure schematic view of the inner mold terminal post frame.

[0035] Figure 9 is a schematic diagram of the electromagnetic heating control principle. DETAILED DESCRIPTION

[0036] The application will be further described below by examples and in conjunction with the drawings:

[0037] In conjunction with Figure 1 — Figure 9 ​As shown, a four-column type mold pressing electromagnetic heating capsule vulcanizing machine is composed of a four-column frame a1, an electromagnetic heating module and a control mechanism.

[0038] The four-column frame a1 is provided with an upper cross beam a2 at the top, a lower cross beam a3 at the middle and a base a4 at the bottom.

[0039] The electromagnetic heating module is composed of an inner ring electromagnetic heating assembly 1, a core mold 2, an outer mold 3, an outer ring electromagnetic heating assembly 4, a magnetic field isolation barrier and a shell 5 arranged in sequence from inside to outside.

[0040] The magnetic field isolation barrier is preferably made of aluminum or copper.

[0041] The core mold 2 and the outer mold 3 in the closed state leave a cavity for placing the capsule 6 between them.

[0042] The inner ring electromagnetic heating assembly 1 and the outer ring electromagnetic heating assembly 4 are respectively matched with the core mold 2 and the outer mold 3 in shape.

[0043] The inner ring electromagnetic heating assembly 1 and the outer ring electromagnetic heating assembly 4 are respectively provided with a placement rack for the temperature measuring sensor to be inserted inward or outward.

[0044] The core mold coil mounting rack 11, the upper half mold coil mounting rack 41 and the lower half mold coil mounting rack 42 are all provided with coil perforations.

[0045] The core mold coil mounting rack 11 is composed of a skeleton structure 111 with the upper and lower ends gathered and connected in a lantern shape, a reinforcing connecting plate 112 located at the largest diameter section inside the skeleton structure 111 and an inner mold wire connecting column rack 113 located at the upper part of the skeleton structure 111.

[0046] The upper and lower ends of the skeleton structure 111 are connected through annular circular blocks 114.

[0047] The reinforcing connecting plate 112 and the annular circular blocks 114 at the upper and lower ends are connected through connecting columns 115 arranged in a ring shape and at intervals.

[0048] The wire passing hole 114a is provided with a wire limiting column mounting screw thread at the upper part.

[0049] The reinforcing connecting plate 112 is provided with a weight reduction hole in a ring shape.

[0050] The inner mold wire connecting column rack 113 is mounted at the bottom end of the annular circular block 114 at the upper end and is provided with a through hole 113a corresponding to the wire passing hole 114a, the through hole 113a corresponding to the wire passing hole 114a for the coil wire is provided in a circular hole shape and is provided with a coil wire seat mounting plate 113b.

[0051] The annular block 114 at the upper end is provided with a gap for the coil terminal seat mounting plate 113b to be inserted, and the via hole 113a is provided in the form of an arc-shaped gap corresponding to the wire passing hole 114a for the sensor wire.

[0052] The core mold coil 12, the upper half mold coil 43 and the lower half mold coil 44 are all made of copper bars, and the spacing between the adjacent upper and lower copper bars is 80-90 mm.

[0053] The spacing between the core mold coil 12 and the inner wall of the core mold 2, and the spacing between the upper half mold coil 43 and the lower half mold coil 44 and the outer wall of the outer mold 3 are all 40-50 mm.

[0054] The inner coil electromagnetic heating assembly 1 is composed of a core mold coil mounting rack 11 and a core mold coil 12 spirally mounted on the core mold coil mounting rack 11, thereby providing temperature for the inside vulcanization of the capsule 6.

[0055] The inner side of the core mold 2 and the outer side of the outer mold 3 are both symmetrically provided with temperature measuring sensor mounting blind holes 8 in the up-down and left-right directions, and are equipped with temperature measuring sensors.

[0056] The core mold 2 is composed of an upper half core mold 21 and a lower half core mold 22.

[0057] The core mold 2 and the outer mold 3 are both provided with four temperature measuring sensor mounting blind holes 8 symmetrically arranged in the up-down and left-right directions.

[0058] The upper half core mold 21 is provided with a wire outlet hole 211 corresponding to the wire passing hole 114a.

[0059] The upper half core mold 21 is provided with a mounting threaded hole 212 corresponding to the top end of the center shaft 221 in the radial direction, so that the center shaft 221 is vertically inserted through the inner coil electromagnetic heating assembly 1 and is threadedly connected with the upper half core mold 21, thereby combining the upper half core mold 21 and the lower half core mold 22.

[0060] The lower half core mold 22 is provided with a center shaft 221 vertically inserted through the inner coil electromagnetic heating assembly 1.

[0061] The outer mold 3 is composed of an upper half outer mold 31 and a lower half outer mold 32.

[0062] The edge of the lower half outer mold 32 is bent outward and upward to form a step matching the lower edge of the upper half outer mold 31.

[0063] The outer coil electromagnetic heating assembly 4 is composed of an upper half mold coil mounting rack 41, a lower half mold coil mounting rack 42, an upper half mold coil 43 spirally mounted on the upper half mold coil mounting rack 41, and a lower half mold coil 44 spirally mounted on the lower half mold coil mounting rack 42, thereby providing temperature for the outside vulcanization of the capsule 6.

[0064] The outer side of the upper half mold coil mounting rack 41 and the lower half mold coil mounting rack 42 is provided with a wire outlet slot 45 for arranging the data line of the temperature measuring sensor.

[0065] The shell 5 is composed of an upper half shell 51 and a lower half shell 52.

[0066] The upper half shell 51 has a smaller inner diameter than the lower half shell 52, and the bottom end abuts against the lower edge of the upper half outer mold 31 when the mold is closed.

[0067] The lower edge of the lower half outer mold 32 extends beyond the lower half shell 52.

[0068] The upper half shell 51 and the lower half shell 52 are both provided with a junction box 53.

[0069] The upper half shell 51 and the upper half outer mold 31 are both fixedly installed below the upper cross beam a2.

[0070] The upper cross beam a2 is installed with a central pull rod a5 connected downward to the core mold 2.

[0071] The central pull rod a5 is symmetrically installed with a pull-up oil cylinder a51, and provides driving force for pulling and releasing the core mold 2 through the pull-up oil cylinder a51.

[0072] The lower cross beam a3 is fixedly connected with the lower half shell 52 and the lower half outer mold 32.

[0073] The lower cross beam a3 is installed with a central chuck a31, and a chuck driving oil cylinder a32 that provides lifting driving force for the central chuck a31.

[0074] The lower cross beam a3 is symmetrically provided with an open-close mold hydraulic cylinder a33, thereby realizing overall lifting movement of the lower cross beam a3.

[0075] The open-close mold hydraulic cylinder a33 preferably adopts a hydraulic plunger type pressurizing oil cylinder.

[0076] The base a4 is provided with a guide limiting groove a41, and the lower cross beam a3 is provided at the bottom with a guide cylinder a34 that is movable along the guide limiting groove a41, and the chuck driving oil cylinder a32 is placed in the inner cavity of the guide cylinder a34.

[0077] The control mechanism is composed of a curing machine electric control cabinet a6 and a curing machine electromagnetic heating control cabinet a7.

[0078] The core mold 2, the outer mold 3, and the shell 5 are all centrally and vertically correspondingly provided with installation vent holes, the central chuck a31 is in the shape of a circular ladder, and the rear edge thereof can press against the inner edge of the bottom end of the capsule after passing through the lower half shell 52 and the lower half outer mold 32, and the central pull rod a5 is internally provided with a gas supply pipeline.

[0079] The gas supply pipeline is connected with the inner cavity of the core mold 2.

[0080] The central chuck a31 is uniformly provided with air ducts around the circumference, which guide air from the gas supply pipeline into the space between the inner wall of the capsule 6 and the core mold 2, thereby enabling the capsule 6 to be blown away from the core mold 2.

[0081] The core mold coil, the upper half mold coil and the corresponding temperature sensor wire harness can be led out through the terminal box of the upper half shell, and the lower half mold coil and the corresponding temperature sensor wire harness can be led out through the terminal box of the lower half shell to the chain that can follow the lower beam a3 to move synchronously, thereby batch centralized wiring, and the wires are conveniently summarized and arranged.

[0082] First, manually fill the rubber material in the concave of the outer half mold, and then start the mold.

[0083] The rubber material is extruded to flow into the cavity and fill the cavity, and the vulcanization timing starts.

[0084] After vulcanization is completed, the bottom plunger is depressurized to open the mold, the two lifting oil cylinders a51 and the two mold opening and closing hydraulic cylinders a33 drive the core mold 2 and the lower beam a3 to move downward at the same time, and the mold is completely opened; At this time, cold air is introduced through the center pull rod a5, and the air duct of the center chuck a31 enters the capsule to inflate the capsule, the center chuck a31 is pulled downward to pull the capsule, the two upper center pull rods a5 drive the core mold 2 to move upward to pull out the capsule from the core mold 2, and finally the center chuck a31 ejects the capsule from the bottom mold, and the vulcanization of the capsule is completed.

[0085] As shown in the electromagnetic heating control principle diagram of Figure 9 According to the data transmitted by the temperature sensor, the delivery power of the upper outer half mold electromagnetic heating power supply 91, the core mold electromagnetic heating power supply 92 and the lower outer half mold electromagnetic heating power supply 93 is adjusted through the PLC control mechanism analysis and comparison adjustment, so as to adjust the electromagnetic heating temperature.

[0086] Because the electromagnetic field is closed, wireless temperature sensors cannot be used, so wired temperature sensors must be used.

[0087] A capsule inspection method, the specific implementation steps are as follows:

[0088] Step S1, compare the four-column mold pressing electromagnetic heating capsule vulcanization machine with the steam heating capsule vulcanization machine, and record the vulcanization time and energy cost required for vulcanizing one capsule;

[0089] Electromagnetic induction heating vulcanization:

[0090] The average power consumption of two continuous vulcanization is (8.1+7.8) / 2=7.95KWh, and according to the thermal equivalent 1 KWh=3600KJ, the thermal value of electromagnetic vulcanization of one capsule is 7.95KWhx3600kJ / 1KWh=27324KJ.

[0091] Steam heating vulcanization:

[0092] The average steam consumption of two continuous vulcanization is (21.5 Kg + 21.25 Kg) / 2 = 21.225 Kg, and the saturated steam enthalpy value at 183°C is 2780.5 KJ / kg. The steam vulcanization of one capsule is 21.225 Kg x 2780.5 KJ / kg = 59016 KJ.

[0093] The energy saving ratio is (59016 - 27324) / 59016 = 53.7%.

[0094] Therefore, electromagnetic induction heating saves energy by 53.7% compared to steam heating.

[0095] Comparison of energy saving cost between electromagnetic heating and steam heating:

[0096] The electricity cost is 0.6 yuan per degree in general areas, and the single consumption is 7.95 KWH. The steam cost is 0.267 yuan / kg in general areas, and the single consumption is 21.225 kg. Electromagnetic heating requires 0.6 yuan / KWH x 7.95 KWH = 4.77 yuan per kg of product, and steam heating requires 0.36 yuan / kg x 21.225 kg = 7.641 yuan per kg of product.

[0097] That is, electromagnetic heating vulcanization saves 2.87 yuan per capsule compared to steam heating vulcanization.

[0098] Steam vulcanization of one 1200R capsule requires 40 minutes of vulcanization time;

[0099] Electromagnetic vulcanization of one 1200R capsule requires 33 minutes of vulcanization time;

[0100] The production efficiency improvement rate is (40 - 33) / 40 x 100% = 17.5%.

[0101] Step S2, the capsules 6 prepared by the four-column type mold pressing electromagnetic heating capsule vulcanization machine are used as the experimental group, and the capsules 6 prepared by the steam heating capsule vulcanization machine are used as the control group. Two pieces are taken from the upper and lower parts of the capsules 6 respectively for length tensile test.

[0102] The comparison data are shown in the following table:

[0103]

[0104] The tensile strength of the electromagnetic heating produced capsule is improved by 6.8% compared to the steam heating produced sample, and the tensile strength deviation is reduced by 45%. It is shown that the overall tensile performance of the electromagnetic heating vulcanized capsule is better than that of the steam vulcanized capsule, which can improve the service life and safety of the capsule as a whole.

Claims

1. A four-column type electromagnetic heating capsule vulcanizing machine, characterized in that: The system includes a four-column frame (a1), an electromagnetic heating module, and a control mechanism. The four-column frame (a1) has an upper crossbeam (a2) installed at the top, a lower crossbeam (a3) ​​installed in the middle, and a base (a4) installed at the bottom. The electromagnetic heating module includes an inner ring electromagnetic heating assembly (1), a core mold (2), an outer mold (3), an outer ring electromagnetic heating assembly (4), a magnetic field isolation barrier, and a shell (5) arranged sequentially from the inside to the outside. The core mold (2) and the outer mold (3) are in a closed state, leaving a cavity for placing a capsule (6). The inner ring electromagnetic heating assembly (1) and the outer ring electromagnetic heating assembly (4) are respectively matched with the core mold (2) and the outer mold (3). The core mold (2) includes an upper core mold (21) and a lower core mold (22). The outer mold (3) The housing (5) includes an upper outer mold (31) and a lower outer mold (32). The housing (5) includes an upper housing (51) and a lower housing (52). The upper housing (51) and the upper outer mold (31) are fixedly installed below the upper crossbeam (a2). The upper crossbeam (a2) is equipped with a central tie rod (a5) that connects downward to the core mold (2). The central tie rod (a5) is symmetrically equipped with lifting cylinders (a51) on the left and right sides, and the lifting cylinders (a51) provide the driving force for pulling up and releasing the core mold (2). The lower crossbeam (a3) ​​is fixedly connected to the lower housing (52) and the lower outer mold (32). The lower crossbeam (a3) ​​is equipped with a central clamping plate (a31) and a clamping plate driving cylinder (a32) that provides the lifting driving force for the central clamping plate (a31). The lower crossbeam (a3) ​​is symmetrically equipped with opening and closing mold hydraulic cylinders (a33) to realize the overall lifting and moving of the lower crossbeam (a3); the control mechanism includes the vulcanizing machine electrical control cabinet (a6) and the vulcanizing machine electromagnetic heating control cabinet (a7).

2. The four-column type electromagnetic heating capsule vulcanizing machine according to claim 1, characterized in that: The inner ring electromagnetic heating assembly (1) includes a core mold coil mounting bracket (11) and a core mold coil (12) spirally mounted on the core mold coil mounting bracket (11), thereby providing temperature for the vulcanization of the inner side of the capsule (6). The inner side of the core mold (2) and the outer side of the outer mold (3) are symmetrically provided with blind holes (8) for installing temperature sensors, and equipped with temperature sensors. The outer ring electromagnetic heating assembly (4) includes an upper half mold coil mounting bracket (41), a lower half mold coil mounting bracket (42), an upper half mold coil (43) spirally mounted on the upper half mold coil mounting bracket (41), and a lower half mold coil (44) spirally mounted on the lower half mold coil mounting bracket (42), thereby providing temperature for the vulcanization of the outer side of the capsule (6).

3. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 2, characterized in that: The inner ring electromagnetic heating assembly (1) and the outer ring electromagnetic heating assembly (4) are respectively provided with mounting brackets for the temperature sensor to be inserted inward or outward. The core mold coil mounting bracket (11), the upper half mold coil mounting bracket (41), and the lower half mold coil mounting bracket (42) are all provided with coil through holes. The outer side of the upper half mold coil mounting bracket (41) and the lower half mold coil mounting bracket (42) is provided with a wire slot (45) for placing the temperature sensor data line.

4. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 2, characterized in that: The core mold coil mounting bracket (11) includes a lantern-shaped frame structure (111) with its upper and lower ends converging and connected, a reinforcing connecting plate (112) located in the section with the largest diameter inside the frame structure (111), and an inner mold terminal block bracket (113) located on the upper part of the frame structure (111). The upper and lower ends of the frame structure (111) are connected by annular blocks (114). The reinforcing connecting plate (112) is connected to the annular blocks (114) at the upper and lower ends by connecting posts (115) arranged circumferentially. The inner side of the annular blocks (114) at the upper end is provided with two pairs of mirror-image wire holes (114a). a) The upper part is provided with a wire-limiting post mounting thread, the reinforcing connecting plate (112) is provided with a weight-reducing hole in the circumference, the inner mold terminal block bracket (113) is installed at the bottom of the annular block (114) located at the upper end, and a through hole (113a) is provided corresponding to the wire hole (114a). The through hole (113a) is set as a circular hole corresponding to the wire hole (114a) for coil wiring, and a coil terminal mounting plate (113b) is provided. The annular block (114) located at the upper end is provided with a notch for the coil terminal mounting plate (113b) to be inserted, and the through hole (113a) is set as an arc-shaped notch corresponding to the wire hole (114a) for sensor wiring.

5. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 2, characterized in that: The core mold coil (12), upper half mold coil (43), and lower half mold coil (44) are all made of copper busbars, and the distance between adjacent upper and lower copper busbars is 80mm to 90mm. The distance between the core mold coil (12) and the inner wall of the core mold (2), and between the upper half mold coil (43) and the lower half mold coil (44) and the outer wall of the outer mold (3) are all 40mm to 50mm.

6. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 1, characterized in that: The lower half of the outer mold (32) bends outward and upward to form a step that fits with the lower edge of the upper half of the outer mold (31). The inner diameter of the upper half of the shell (51) is smaller than that of the lower half of the shell (52), and the bottom end abuts against the lower edge of the upper half of the outer mold (31) when the mold is closed. The edge of the lower half of the outer mold (32) extends out of the lower half of the shell (52). Both the upper half of the shell (51) and the lower half of the shell (52) are provided with junction boxes (53).

7. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 2, characterized in that: The lower half core mold (22) has a central shaft (221) that passes vertically through the inner ring electromagnetic heating assembly (1) installed in the center of the bottom. The upper half core mold (21) has a wire outlet hole (211) corresponding to the wire hole (114a) at the top. The upper half core mold (21) has a mounting thread hole (212) circumferentially arranged at the top of the central shaft (221) so that the central shaft (221) passes vertically through the inner ring electromagnetic heating assembly (1) and is threadedly connected to the upper half core mold (21). The upper half core mold (21) and the lower half core mold (22) are installed together. The magnetic field isolation barrier is made of aluminum or copper. The core mold (2) and the outer mold (3) are both provided with four blind holes (8) for installing temperature sensors that are symmetrical in the upper, lower and left and right.

8. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 1, characterized in that: The core mold (2), outer mold (3), and shell (5) are all provided with ventilation holes at their centers, one above the other. The central clamping plate (a31) is in the shape of a truncated cone and passes through the lower shell (52) and the lower outer mold (32). Its rear edge can press against the inner edge of the bottom of the capsule. The central pull rod (a5) is provided with an air supply pipe. The air supply pipe is connected to the inner cavity of the core mold (2). The central clamping plate (a31) is provided with a circumferentially uniform air channel to guide the air from the air supply pipe into the airway between the inner wall of the capsule (6) and the core mold (2), thereby inflating the capsule (6) and causing it to detach from the core mold (2).

9. A four-column type electromagnetic heating capsule vulcanizing machine according to claim 1, characterized in that: The base (a4) is provided with a guide limiting groove (a41), the bottom of the lower crossbeam (a3) ​​is provided with a guide cylinder (a34) that moves along the guide limiting groove (a41), the clamping plate driving cylinder (a32) is placed in the inner cavity of the guide cylinder (a34), and the mold opening and closing hydraulic cylinder (a33) is a hydraulic plunger type pressurizing cylinder.

10. A capsule testing method, characterized in that, Includes the following steps: Step S1: Comparative experiment was conducted using the four-column molding electromagnetic heating capsule vulcanizing machine described in any of claims 1-9 and the steam heating capsule vulcanizing machine, and the vulcanization time and energy cost required to vulcanize one capsule (6) were recorded. Step S2: Capsules (6) prepared by the four-column molding electromagnetic heating capsule vulcanizing machine are used as the experimental group, and capsules (6) prepared by the steam heating capsule vulcanizing machine are used as the control group. Two pieces are taken from the upper and lower parts of the capsules (6) respectively for length stretching test.

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