JP4932258B2 - Two-component resin casting method and casting device for mold body of mold transformer - Google Patents

Description

The present invention relates to a casting method of a two-component resin for a mold body of a mold transformer and a casting apparatus for a two-component resin of a mold body of a mold transformer, and more particularly, to cast a two-component resin to a mold transformer. It is related with the apparatus to do.

  Conventionally, when using a two-component resin, after confirming the blending ratio of the main agent and the curing agent in advance, the value based on the sum of the values weighed individually before the operation and the mixed measurement value match or are predetermined. The measurement management is performed by manually confirming whether it is within the range (see Patent Document 1). When the measured value approached the predetermined allowable range limit, the number of mixing confirmation weighings was increased and the individual blending ratio confirmation weighing was frequently performed and corrected as necessary. In addition, when the confirmation weighing work was repeated and correction was impossible, it was considered that it was due to wear, and therefore the parts of the device discharge part were replaced.

  Prior art will be described. FIG. 1 shows a configuration diagram of a conventional casting method. In the conventional casting method, the curing agent 1 and the main agent 2 are extruded in a structure in which the curing agent side discharge portion 3 and the main agent side discharge portion 4 are provided, respectively, and a predetermined mixing ratio is obtained, and each discharge resin is mixed with the mixing mixer portion. 5 is mixed, and the two-component resin 7 mixed in the gap between the mold body 8 and the winding coil portion 9 which has been conveyed by the platen 10 is positioned to the tip nozzle portion 6 connected from the mixing mixer 5. After performing the above, a casting operation for forming an exterior portion of the coil 9 of the mold transformer is performed by pouring into the mold body 8.

  FIG. 2 shows a conventional individual weighing method for confirming the blending ratio. Before starting the casting operation with this casting method, it is necessary to carry out confirmation weighing because the mixing ratio is affected by the clogging of equipment piping and the wear of the discharge part. This confirmation metering is based on the mixed discharge mass when the theoretical values and blending ratios of the curing agent 1 and the main agent 2 which are two-component resins used are used as reference values. An operation to confirm whether the actual discharge mass is within a specified range. When conditions change, such as when the apparatus is started up or when the discharge parts are replaced, the theoretical values of the curing agent 1 and the main agent 2 are first measured. The method is as follows. In a discharge device that uses linear interpolation control by a servo motor, which is generally used as a two-component type resin casting device, the hose is supplied from the mixing mixer unit 5 to the curing agent side individual metering receptacle 12 and the main agent side individual metering receptacle. After setting in each container 13 and pouring a predetermined discharge amount, the resin of each of the sampled curing agent 14 and main agent 15 is weighed. At this time, the individual theoretical value and the blending ratio with respect to the set total mass are confirmed, and the value as the mixed discharge mass obtained by summing the individually weighed masses is used as a reference value.

  FIG. 3 shows a conventional mixing and weighing method for confirming the sum after mixing with the mixer. The check weighing before work is normally performed at a position 6 directly above the receiving container 11 for total weighing before pouring the tip nozzle 6 before pouring into the gap between the mold body 8 and the winding coil portion 9 conveyed by the platen 10 for casting. After moving to ′ and discharging, the two-component resin 7 ′ sampled for mixing and weighing is taken out of the apparatus for each container 11 and weighed by a measuring instrument. At this time, the mass value set as the mixed discharge reference value in advance is compared with the actual mixed discharge mass value to confirm that it is within the allowable range of the specified value. This series of individual weighing operations and total weighing operations is performed manually by the operator, and it is necessary to monitor the allowable range of the specified value, so it is outside the allowable range of the specified value, especially when approaching the allowable range limit. It was necessary to increase the number of weighings and confirm the situation so that it would not occur. Further, there is a case where the discharge amount is corrected so as not to reach the limit value of the allowable range of the specified value, and further, a change work time and a check work are required, which is a problem.

FIG. 4 is an explanatory view showing a hardener side discharge part piston part that is particularly worn by a change with time. The characteristics of the two-component resin that is the subject of explanation this time will be explained on the premise that it can be noticed that the hardener side is particularly worn due to changes over time. In the hardener side discharge part 3, when the wear part 17 occurs in the part which is the clearance part between the hardener side discharge outer shape part 16 and the discharge part piston part 3 ', the two-component resin 18 leaking is generated due to wear. This amount of leakage is related to the wear state, and if the wear amount is a certain period from the occurrence of wear, it can be dealt with by data correction in the device discharge control unit, but the wear state when approaching the limit value is not corrected Since it is not possible to respond, early parts replacement must be performed. However, there is a problem that it is difficult to determine in advance the parts replacement time in the discharge unit, and it is not possible to give an instruction for replacement at an appropriate time.
JP-A-6-39857

  In the conventional method, after confirming the mixing ratio of the main agent and curing agent and the individual measured values for the set theoretical values, the sum of the individual values weighed individually is set as the specified value. When it is necessary to correct the numerical value of the discharge data for, since it was determined by human beings, it was necessary to monitor regularly and time was required for adjustment work. Also, if the check weighing work is repeated and correction is impossible, it is considered that it is due to wear, so it is necessary to replace the parts of the device discharge part, but it is difficult to make a preliminary decision, and it is not possible to give an advance replacement instruction at the appropriate time was there.

  In the present invention, when a two-component resin is cast into a mold for forming an arbitrary shape, a measuring instrument is installed so as to constantly measure the weight of the mold body, and the change in weight per shot is measured. It is characterized by. In addition, in the two-component resin casting method, the weight of the die body is measured for each shot and fed back, and an operational software circuit that can be compared with the set value by feeding back is used. It is characterized in that it can be corrected. In addition, in the two-component resin casting method, the weight of the mold body is measured for each shot, and compared with the set value, casting is performed for the total amount of one product that uses the two-component resin. The feature is that the amount can be corrected.

That is, the present invention, each resin of two-liquid type resin consisting of main component and a curing agent, and casting by mixing shot discharge a predetermined amount of each resin in the two-pack type resin in each piston operation, the At this time, a two-component type resin casting method in which a shot by the piston operation is performed a plurality of times and is cast into a mold body of a mold transformer, wherein the two-component type resin composed of the main agent and a curing agent is cast. The weight of the mold body of the container can be measured, and the reference discharge amount and the reference mixed casting amount of each resin in each shot of a predetermined amount discharged by the piston operation of each resin of the two-component resin are obtained in advance. and advance measures the mixing and discharging resin amount of each one shot discharging each of said piston operation from the weight of the mold body in the mold transformer in casting, the mixing and discharging cashier obtained from the measurement result And comparing the amount with the reference mixture casting amount, the advance two-liquid type by modifying the discharge rate of the resin in the subsequent shots using the reference ejection amount and the reference mixtures casting of the resin, obtained This is a two-component type resin casting method for the mold body of a mold transformer that corrects the blending ratio of the resin.

In addition, the present invention corrects the discharge amount of the resin and corrects the mixing ratio of the two-component resin, and the data is stored in the hardener side piston control unit of the two-component resin composed of the main agent and the curing agent. This is a two-component resin casting method for the mold body of a mold transformer that issues a change command.

And when the present invention corrects the discharge amount of the resin and corrects the mixing ratio of the two-component resin, the data is changed to the main component side piston control unit of the two-component resin composed of the main agent and the curing agent. This is a two-component type resin casting method for the mold main body of the mold transformer that issues a command.

Furthermore, the present invention includes means for mixing and casting each resin of a two-component resin comprising a main agent and a curing agent with a predetermined amount of discharge shots by a piston, and the casting means is a plurality of shots. Is a two-component resin casting apparatus for casting into a mold body of a mold transformer, and measures the weight of the mold body of the mold transformer that casts the two-component resin composed of the main agent and the curing agent. Means, means for storing a reference discharge amount and a reference mixed casting amount of each resin in each shot of a predetermined amount of discharge by the piston of each resin of the two-component resin, and a mold of the mold transformer during casting means for measuring the mixing and discharging amount of resin from the weight for each shot ejection of the piston body, and means for comparing said mixing and discharging amount of resin obtained from the measurement result and with said reference mixed casting weight, the Symbol Calculate the blending ratio of the two-component resin in the mold body of the mold transformer by calculating the discharge amount of each resin in each shot using the reference discharge amount and the reference mixed casting amount of each resin stored in the means, And a means for correcting the blending ratio of the two-component resin by correcting the discharge amount of each resin in subsequent shots.

  According to the present invention, when casting a two-component resin, the feedback control is performed for the weight change for each shot, and the blending ratio or the one-shot discharge amount is calculated to be almost constant, thereby performing the blending process. The ratio can always be kept at a theoretical value, and it is possible to cope with a reduction in leakage due to wear of the discharge part. Thereby, the product to be cast can always be close to a certain blending ratio and casting amount, and the monitoring time for measuring and managing can be shortened.

The best mode for carrying out the present invention will be described.
Examples of the two-component resin casting method and casting apparatus of the present invention will be described with reference to the drawings.

  Example 1 will be described. FIG. 5 is an explanatory view showing a casting part provided with a measuring instrument for measuring the mold body in the first embodiment of the present invention. In this embodiment, a mold body 8 disposed on a platen 10 is used, and a two-component resin 7 mixed from a tip nozzle portion 6 is cast into a wound coil component 9 that forms the outer shape at the time of casting. At this time, a measuring device 19 is installed in the casting apparatus so that the entire mold body 8 including the platen 10 can be measured in advance, and for each casting in which a set number of discharges are performed by piston stroke operation, every shot. The amount of the mixed discharge resin is measured every time. As the two-pack type resin 7, for example, EPOXYRESIN MT2500A and HARDENER MT2500B (manufactured by Nagase ChemteX Corporation) are used. The mixed discharge resin amount is calculated by a method such as subtracting the previous measurement value from the current measurement value. The data weighed each time is transmitted to the sequencer 20 for arithmetic processing as indicated by an arrow 23 indicating the data flow direction from the measuring device 19, and is input to a correction range within an allowable range with respect to a preset specified value (reference value). When it reaches, a data change command is issued to the hardener side piston control unit 21 as indicated by an arrow 24 indicating a direction in which a processing command is given to the hardener side. In the case of performing a blending ratio correction instruction among the correction instruction contents, a command is issued to the main agent side piston control unit 22 as indicated by an arrow 25 indicating a direction in which a processing command is issued to the main agent side. In this way, it is possible to control to always make the blending ratio constant by issuing commands to the respective piston control units 21 and 22. In this way, when casting a two-component resin, feedback control is performed for the weight change for each shot, and the blending ratio and the one-shot discharge amount are processed to be constant, so that the blending ratio is always the theoretical value. It is possible to keep leaking due to wear of the discharge part, and the product to be cast can always be close to a certain blending ratio and casting amount, and the monitoring time for measuring and managing is shortened. be able to.

  As the preset reference value, the discharge amount and mixed casting amount of each resin in each shot of the predetermined amount of each resin of the two-component resin are measured in advance, and the reference discharge amount and the reference mixed casting amount are respectively measured. Amount. The reference mixed casting amount in each shot is made to correspond to the reference discharge amount of each resin. Instead of measuring all shots, it is possible to measure only an appropriate number and to calculate non-measured shots by an interpolation method or theoretically. In addition, when the discharge amount of one resin is unchanged in each shot, it is possible to create a reference value for the discharge amount of only the other resin.

  An example of the procedure for correcting the blending ratio is to obtain the measured mixed casting amount by measuring the mixed casting amount of the shot at the time of measurement. Next, using the reference discharge amount and the reference mixed casting amount in each shot, the reference mixed casting amount close to the value of the measured mixed casting amount is found, and the reference of each resin corresponding to the reference mixed casting amount is found. The discharge amount is obtained, and the ratio is the blending ratio in the shot at the time of measurement.

  In the casting field using a two-component resin, time is required for the adjustment work corresponding to the reduction in leakage due to wear of the discharge part. However, it is required to have a highly reliable and inexpensive product. The present invention is a method capable of automatically correcting the blending ratio by performing arithmetic processing using measurement data, and meets the demand.

The block diagram of the conventional casting method. Explanatory drawing which shows the conventional separate measurement system for confirming a mixture ratio. Explanatory drawing which shows the conventional measuring method which confirms the sum total after mixer mixing. Explanatory drawing which shows the leak reduction of the discharge part piston components by the side of the hardening | curing agent which wears especially with a time-dependent change. Explanatory drawing which shows the casting part which installed the measuring device which measures the type | mold main body in an Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hardener, 2 ... Main agent, 3 ... Hardener side discharge part, 3 '... Discharge part piston part, 4 ... Main agent side discharge part, 5 ... Mixing mixer part, 6 ... tip nozzle part, 6 '... tip nozzle part moved for sampling, 7 ... mixed two-component resin, 7' ... two sampled for weighing after mixing Liquid type resin, 8 ... Mold body, 9 ... Winding coil section, 10 ... Conveyance platen, 11 ... Receiving container for total weighing, 12 ... Receiving container for individual weighing on the curing agent side, 13 ... Receiver for individual weighing of main agent side, 14 ... Hardening agent sampled for individual weighing, 15 ... Main agent sampled for individual weighing, 16 ... Outside discharge of curing agent side Diameter: 17 ... Outer diameter wear part of discharge piston part, 18 ... Due to wear of discharge piston part Leaky two-component resin, 19 ... Mold body measuring device, 20 ... Sequencer for processing, 21 ... Hardener side piston controller, 22 ... Main agent side piston controller, 23 ..Arrows indicating the direction of data flow from the measuring instrument, 24... Arrows indicating the direction of processing commands from the sequencer to the curing agent side, 25... Arrows indicating the direction of processing commands from the sequencer to the main agent side

Claims (4)

Each resin of a two-component resin consisting of a main agent and a curing agent is mixed and cast with a shot of a predetermined amount of each resin of the two-component resin in each piston operation. It is a two-component type resin casting method in which a plurality of shots are performed and cast into the mold body of a mold transformer,
The weight of the mold body of the mold transformer for casting the two-component resin composed of the main agent and the curing agent can be measured, and in each shot of a predetermined amount of discharge by the piston operation of each resin of the two-component resin Obtain the reference discharge amount and reference mixed casting amount of each resin in advance, and measure the mixed discharge resin amount for each shot of the piston operation from the weight of the mold body of the mold transformer during casting. The mixed discharge resin amount obtained from the measurement result and the reference mixed casting amount are compared, and the reference discharge amount and the reference mixed casting amount of each resin obtained in advance are used for each subsequent shot. A two-component type resin casting method for a mold body of a mold transformer, which corrects the mixing ratio of the two-component type resin by correcting the discharge amount of the resin. In the two-component type resin casting method of the mold main body of the mold transformer according to claim 1,
When correcting the resin discharge amount and correcting the compounding ratio of the two-component resin, it is necessary to issue a data change command to the curing agent-side piston control unit of the two-component resin composed of the main agent and the curing agent. A two-component resin casting method for a mold body of a molded transformer. In the two-component type resin casting method of the mold main body of the mold transformer according to claim 1,
When correcting the resin discharge amount to correct the mixing ratio of the two-component resin, a data change command is issued to the main component-side piston controller of the two-component resin composed of the main agent and the curing agent. A two-component resin casting method for the mold body of the mold transformer. It is provided with a means for mixing and casting each resin of a two-component type resin composed of a main agent and a curing agent with a predetermined amount of discharge shots by a piston, and the casting means performs a plurality of shots to perform a mold transformer. A two-component resin casting device for casting into the mold body of
Means for measuring the weight of a mold body of a mold transformer for casting a two-component resin composed of the main agent and a curing agent, and each shot of a predetermined amount discharged by the piston of each resin of the two-component resin Means for storing the reference discharge amount of the resin and the reference mixed casting amount, means for measuring the mixed discharge resin amount for each one shot discharge of the piston from the weight of the mold body of the mold transformer during casting, and measurement The means for comparing the mixed discharge resin amount obtained from the result with the reference mixed casting amount, and the reference discharge amount and the reference mixed casting amount of each resin stored in the storage means, for each resin in each shot. Calculate the discharge amount to calculate the blending ratio of the two-component resin in the mold body of the mold transformer, and correct the discharge amount of each resin in the subsequent shots to correct the two-component resin. Two-component type resin casting device type body of the mold transformer and having a means for correcting the mixing ratio of.

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