JP5527704B1 - Resin bonding equipment - Google Patents

Abstract

[Objective] To provide a resin bonding apparatus in which a plastic pellet is melted by a melting machine and a first member and a second member are bonded by a resin melting injection apparatus and an adapter.
[Structure] The outlet member 5 is provided at the tip, the cylinder 1 provided with the plunger 4 on the rear side, the driving means 3 for reciprocating movement, and the outflow from the large opening 22a on the inlet side with respect to the longitudinal direction of the main body 21. A large number of melting holes 22 communicating with the side small openings 22b are formed. The melting hole 22 has a large-diameter cylindrical portion 22d formed close to the end, and the melting device 2 in which the outflow side small openings 22b are formed only on the outflow side. A resin melt injection apparatus comprising a heating means 6 and pellets p flowing from the inflow side large opening 22a of the melter 2 by the pressing of the plunger 4 and flowing out as the molten resin q from the outflow side small opening 22b; The molten resin q is injected into at least one side surface of the first member 91 and the second member 92 that are joined to each other by the molten resin q injected from the member 5, and the adapter 8 is held to prevent escape. .
[Selection] Figure 1

Description

  The present invention provides a resin melt injection apparatus for injecting a large number of plastic pellets and injecting the molten resin in a heated melter and an adapter, and the first member and the second member are connected to each other by the resin. The present invention relates to a resin bonding apparatus (also referred to as “synthetic resin bonding apparatus”) that can improve the speediness and airtightness of the molten resin from the melt injection apparatus.

  Generally, there are screw type and plunger type injection devices. As a typical example, as disclosed in Patent Document 1 for a screw type, and as disclosed in Patent Document 2 for a plunger type, each is mainly composed of a cylinder and a screw. The pellets introduced from the hopper provided in the cylinder are transferred to the injection nozzle side by the rotation of the screw inside the cylinder, and are heated and melted in the transfer process. Then, the molten resin is collected at the tip of the nozzle, injected, and the molten resin is sent to the mold.

  General plastic pellets (hereinafter simply referred to as “pellets”) are made of plastic (synthetic resin) and have a thermal conductivity of about 0.07 to 0.20 kcal / m · hr · ° C. This is one-hundredth to several-thousandth of the thermal conductivity of the metal, and thus, the pellet can be said to be a substantially heat insulating material. Therefore, even when sufficient heat of fusion is applied to melt the pellet, it is difficult for the heat to be transferred to the inside (center) of the pellet, and it takes a considerable time to be sufficiently heated.

  Accordingly, it has been impossible in a short time until the individual pellets are sufficiently melted and ready for resin molding. For this reason, the pellets have to be melted for a relatively long time in the cylinder, and the working efficiency is not good. Further, in the injection device, each of the solids of a large number of pellets charged into the cylinder is heated and moved to the injection side when the screw rotates, and at this time, a part of the large number of pellets is moved to the inner wall of the cylinder. It will be in a state of being pressed against.

  That is, it is pressed against the cylinder inner wall. And also about each pellet pressed, only a part of the surface of the solid contacts a cylinder inner wall, and melting of each pellet only melts the pellet solid partially. Pellets that are kneaded by the screw in the cylinder are separated from the inner wall of the cylinder in a short time, are not heated sufficiently, the pellet solid is not melted as a whole, and most of the pellets are mixed with the molten part and the unmelted part It becomes a state.

  By repeatedly pressing the pellet against the inner wall of the cylinder with the screw, the pellet is completely melted, and even when the melted pellet is transferred to the vicinity of the nozzle, the amount of resin stored in the cylinder is one time. This amount is more than several tens of times the amount required for the injection, and a wasteful amount of pellets remains in the cylinder.

  Further, when the molten resin passes through the gap between the screw and the cylinder, the resin is mechanically damaged. In particular, when melting glass fiber-containing pellets, there are many problems, and the screw is worn. Also, since each pellet is randomly melted only partially, it is inevitable that the same pellet will remain in the cylinder indefinitely. Therefore, the work is particularly difficult when changing the material in the pellets in the cylinder.

  There is a plunger type for such a screw type. This type has a simple structure and is easy to downsize. Also, the plunger type does not have the disadvantage that the screw is worn. Patent Document 2 is of the plunger type having the most basic structure, and is mainly composed of a frustoconical heating cylinder having a large number of through holes, an injection plunger, a supply cylinder, and the like. . The synthetic resin raw material is sent out to the heating cylinder by the injection plunger, and injection is performed. However, Patent Document 2 also has various problems.

  In Patent Document 2, the injection plunger and the frustoconical heating cylinder have different diameters, and the diameter of the injection plunger is slightly smaller than the diameter of the facing portion of the heating cylinder. . In addition, a gap chamber having a volume larger than the area of the tip of the injection plunger exists between the tip of the injection plunger, the heating cylinder, the tip of the injection plunger, and the supply cylinder.

  Therefore, the molten synthetic resin raw material is once extruded into the gap chamber by the injection plunger, but even if the injection plunger further moves to the heating cylinder side, the synthetic resin raw material efficiently flows into the through hole of the heating cylinder. There is a possibility that it will not flow into the heating cylinder and remain in the gap chamber. And the synthetic resin raw material remaining in the space may be a hindrance to the synthetic resin raw material to be newly sent out to the through hole of the heating cylinder. Moreover, there is a sufficient possibility that the synthetic resin raw material to be newly sent out and the resin that has deteriorated due to remaining for a long time are mixed.

  The present applicant has improved an inconvenient point of such a frustoconical heating cylinder and an injection plunger, and an injection device in a molding machine capable of efficiently performing a pellet resin melting process and a molten resin injection process. Was developed in Patent Document 3. In this patent document 3, the pellets can be melted by the resin only by pressing the aggregate of the pellets with the plunger, and the pellets can be melted by the resin. It is possible to provide an epoch-making invention that can be performed.

  In the present invention, as a melting step for melting the pellets, the molten resin passes through a large number of conical holes of the heated melter at a predetermined pressure, and becomes a molten resin when it exits from the pellet solid. That is, the melting speed and the injection speed are the same in relation to the material of the pellet, the viscosity of the molten resin, the melting temperature, the pressure, the melting speed, the extrusion speed, the flow rate, and the like. Then, when considering the melting rate, it can be melted fairly quickly. Furthermore, it has succeeded in making it much smaller and lighter than conventional injection devices, and further uses have been devised.

  Cited Document 3 discloses an invention in which an appropriate member is connected by an injection device. In this apparatus, a conventional injection apparatus is used, and in fact, there is a serious drawback that the gate portion is complicated and the hole diameter is small and a smooth connection cannot be made. In particular, it has been desired to use a small resin melt injection apparatus to join at least two members while improving airtightness, not rivets, bolts / nuts, welding, or the like.

JP-A-6-246802 Japanese Patent Publication No. 36-9884 Japanese Patent Laid-Open No. 10-44247

Therefore, the problem to be solved by the invention (object of the invention) is to make use of a small and light weight device, and to join the first member and the second member to each other, It is to develop an adapter that can be joined by injected molten resin, and to improve the speed and airtightness. Thus, it is also an object to provide an excellent resin-bonded member as the first member and the second member that are resin-bonded.
In addition, the case where a 3rd member (refer FIG. 13) and the member beyond it are superposed | polymerized at once is also included in the said resin joining member.

  Therefore, the inventor has intensively and researched to solve the above-mentioned problems, and as a result, the invention according to claim 1 is characterized in that an outlet member is provided on the front end injection side in the longitudinal direction and a cylindrical plunger is provided on the rear side. A cylinder provided with a pellet supply port for supplying plastic pellets at an intermediate position between the plunger and the outlet member; drive means for reciprocating the plunger in the axial direction; and a container body formed in a column shape A large number of melting holes communicating from the inflow side large opening to the outflow side small opening with respect to the longitudinal direction are formed, the large diameter cylindrical portion as the inflow side large opening is formed close to the end, and A melter in which the outflow side small opening is formed only on the outflow side, and a heating means for heating the melter, the melter being disposed between the plunger and the outlet member, and supplying the pellets mouth A resin melt injection apparatus configured to flow the plastic pellets supplied from the inlet large opening of the melter by pressing the plunger and flow out as molten resin from the outlet small opening; An adapter for injecting the molten resin and holding the molten resin to prevent escape of the molten resin to at least one side surface of the first member and the second member that are joined to each other by the molten resin injected from the outlet member; The above-described problems have been solved by using a resin bonding apparatus characterized by

  According to a second aspect of the present invention, there is provided an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member. A large number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed with respect to the longitudinal direction of the cylinder provided in each case and the cylindrical main body, and the melting hole is formed on the large inflow side. A conical hole is formed from the large diameter of the opening to the end side so as to be larger than the inner diameter of the outflow side small opening and smaller than the inner diameter of the inflow side large opening. It comprises a melter formed as a small opening and a heating means for heating the melter, and the melter is disposed between the plunger and the outlet member, and is supplied from the pellet supply port. A resin melt injection device configured such that pellets flow from the inflow side large opening of the melter by the plunger and flow out as molten resin from the outflow side small opening, and are injected from the outlet member The molten resin is injected into at least one side surface of the first member and the second member that are joined to each other by the molten resin, and the adapter is held to prevent the molten resin from escaping. By using a resin bonding apparatus, the above problems have been solved.

  According to a third aspect of the present invention, in the first or second aspect, the adapter includes a first adapter and a second adapter, and a molten resin generated by the resin melt injection apparatus is injected into the first adapter. An insertion port into which the nozzle part of the outlet member is inserted is formed, and the melting is performed while closing the coupling holes drilled in the first member and the second member on the back surfaces of the first adapter and the second adapter, respectively. The above-described problem has been solved by providing a resin bonding apparatus characterized by having a blocking surface as a surface for preventing escape of resin.

  According to a fourth aspect of the present invention, in the first or second aspect, the adapter includes a first adapter and a second adapter, and a molten resin generated by the resin melt injection apparatus is injected into the first adapter. An insertion port into which the nozzle portion of the outlet member to be inserted is inserted is formed, and a coupling hole drilled in each of the first member and the second member is closed on the back surface of the first adapter or the second adapter and the coupling is performed. The above-mentioned problems have been solved by providing a resin bonding apparatus characterized in that it is provided with a concave portion that forms a bulging portion having a diameter larger than the hole diameter.

  According to a fifth aspect of the present invention, in the first or second aspect, the adapter includes a first adapter and a second adapter, and a molten resin generated by the resin melt injection apparatus is injected into the first adapter. An insertion port into which the nozzle part of the outlet member to be inserted is inserted is formed, and the coupling holes drilled in the first member and the second member are respectively closed on the back surfaces of the first adapter and the second adapter, and the coupling is performed. The above-mentioned problems have been solved by providing a resin bonding apparatus characterized in that a concave portion that forms a bulging portion having a diameter larger than the hole diameter is provided.

  Invention of Claim 6 is set to Claim 1 or 2, The said adapter is comprised as a 1st adapter, The said exit from which the molten resin produced | generated by the said resin melt injection apparatus is inject | poured into the said 1st adapter An insertion port into which the nozzle portion of the member is inserted is formed and configured to prevent escape of the molten resin, and further, the coupling hole drilled in the first member is closed on the back surface of the first adapter and the The above-described problem has been solved by providing a resin bonding apparatus including a concave portion that forms a bulging portion having a diameter larger than the diameter of the coupling hole and bonding the first member and the second member.

  The invention of claim 7 is the adapter according to claim 1 or 2, wherein the adapter includes a first adapter and a second adapter, and the first adapter is formed with an injection port through which the molten resin is injected, and A resin bonding apparatus characterized in that a continuous groove surrounding the first member and the second member is formed on the inner surfaces of the first adapter and the second adapter and communicated with the inlet. As a result, the above problems have been solved.

According to an eighth aspect of the invention, in any one of the first, second, third, fourth, fifth, sixth and seventh aspects, a heat insulating material is interposed between the nozzle portion of the outlet member and the first adapter. The above-described problems are solved by using a resin bonding apparatus characterized by being formed.

  According to the first aspect of the present invention, the first member and the second member are connected to each other by the resin melting injection apparatus and the adapter for injecting the molten resin while the resin is melted in a large number of plastic pellets in a heated melter. There is the greatest advantage that quickness, airtightness, waterproofness, etc. can be improved with respect to the joining by the molten resin from the resin melt injection apparatus.

  In particular, in the experimental example, a large number of pellets filled in the cylinder are pressed by pressurizing or the like in a state where a large number of pellets are packed in the cylinder. The pellets are melted by passing through a large number of melting holes communicating with the outflow side small openings, and the resin can be melted well.

  The pressed many pellets are not wasted at all, and can be directly fed into a large number of large openings on the inflow side of the melting holes of the melter. Therefore, a large number of pellets between the distal end portion of the plunger and the inflow side surface portion of the melter can be sequentially fed. Pellets that are pressed between the distal end portion of the plunger and the inflow side surface portion of the melter and enter from the large opening on the inflow side of the melting hole are surrounded by the inner peripheral wall surface of the melting hole, and the tip is narrowed. Since it is a full melt hole passage, the pressing force gradually increases with the movement toward the outflow side small opening side and is melted by heating to become small.

  The melter itself is heated to the melting temperature of the pellets by heating means, and the pellets are melted. At this time, the entire periphery of the pellet is in a state surrounded by the inner peripheral wall surface of the melting hole, and the pellet can be melted from the outer periphery to the center part in a substantially even balance. In addition, since the pellet body moves in the melting hole from the inflow side large opening toward the outflow side small opening, the container body has a large heat capacity. Can be maintained at a sufficient melting temperature while heating the pellets without being affected by the temperature of the molten pellets.

  And while the pellets are melted substantially uniformly from the outer periphery toward the center, they are pressed by a large number of pellets that enter one after the other from the inflow side large opening, and can move to the outflow side small opening of the melt hole. Melting of the pellets progresses, and most of the melted part is passed through approximately the middle in the axial direction (longitudinal direction) of the melt hole. Melting of the surrounding pellets progresses at an accelerated rate with the melting heat of the melter. . In the vicinity of the small opening on the outflow side, the pellets are completely melted at the maximum temperature and can be stored in the cylinder as a molten resin.

  As described above, in the present invention, the melting machine has melting holes with many points constricted in the main body, and is extruded into the melting holes with many points heated to the melting temperature by the heating means. Since the pellets enter from the large opening side inflow side large opening, the pellets are melted in a well-balanced manner, and the heat capacity of the melter is large, so that a high temperature state can be maintained, melting is promoted and the melting rate is also increased. It becomes faster and the molten resin is stored on the outlet member side.

  In particular, in the melter, the temperature of the resin reaches the maximum at the small opening portion on the outflow side by the heating means. The optimum temperature required immediately before injection and the maximum temperature can be set, and the resin is not deteriorated by setting the high temperature state to the minimum time, so that high-quality molding is possible. That is, the melter has a structure that can raise the resin to the optimum temperature immediately before injection in the last process in which the resin melts.

  Until it is injected into the adapter, the melter is once heated to a high temperature by the heating means, and the high temperature is maintained by a large heat capacity, and the molten pellet maintains a sufficient melting temperature without lowering the temperature. , A molten resin can be made with high quality pellets. When the molten resin is injected into the adapter, it immediately solidifies at the normal temperature peripheral walls of the first member and the second member, and the first member and the second member are joined to each other quickly and airtight. Etc. can be improved. Such a solidification rate is different for both the bond and the joint material.

  The invention of claim 2 has almost the same effect as that of claim 1. Further, in the invention of claim 3, if a coupling hole is provided in each of the first member and the second member, the resin bonding is performed almost instantaneously in the coupling hole by the molten resin injection operation via the adapter. it can. In the case of a hard synthetic resin, it can be firmly fixed. Furthermore, the adapter can be simply configured and can be provided at a low cost.

  In the invention of claim 4, in particular, when the coupling hole of the first member or the second member is formed as a female screw, there is an advantage that it can be manufactured as a resin bolt coupling configuration. According to the fifth aspect of the present invention, the first member and the second member are each provided with a coupling hole, and provided with a recess that forms a bulging portion having a larger diameter than the coupling hole. Is simple and quick.

  In the invention of claim 6, in particular, when the second adapter is formed as a female screw in a configuration that does not require the second adapter, it can be manufactured as a resin bolt coupling configuration. Moreover, it can manufacture as a resin nut (cap nut) coupling | bonding structure by setting it as the structure which mounted | wore with the metal bolt of the 2nd member.

  The invention according to claim 7 has an advantage that the first member and the second member can be joined to each other without providing any coupling holes or the like for the first member and the second member. Even if the first member and the second member are joined at an appropriate interval, they can be joined well. Further, the first member and the second member can be joined by a round bar or a square bar as well as a plate material.

  In the invention of claim 8, there is an advantage that the resin can be satisfactorily bonded by avoiding the cooling by the first adapter.

It is a side view as a partial cross section which shows the whole apparatus of this invention. (A) is a longitudinal side view of the state immediately before injection of the present invention, and (B) is a longitudinal side view of the state immediately after completion of the first injection of the present invention, immediately before the next injection. (A) is an enlarged longitudinal side view of the essential part of the present invention of a cylindrically shaped melting hole that shows a state in which the pellets move while melting from the inflow side large opening toward the outflow side small opening, (B) It is an expansion vertical side view of the conventionally well-known cone-shaped fusion hole which shows the state which a pellet moves, melting from an inflow side large opening toward an outflow side small opening. (A) is a partially cutaway perspective view of the melter of the first embodiment, (B) is a longitudinal side view of (A), (C) is a modification of (A), and is an upper part of the melter. Partial perspective view, (D) is an enlarged cross-sectional view taken along arrow Y1-Y1 in (C), (E) is an enlarged cross-sectional view taken along arrow Y2-Y2 in (D), and (F) is a melter according to the second embodiment. FIG. (A) is an enlarged sectional view in which the first member and the second member are joined with the outlet member and the adapter of the first embodiment, and (B) is a partial section of the main member used in (A). A perspective view and (C) are expanded sectional views which completed the joining of another 1st member and the 2nd member with the outlet member and the adapter of a 1st embodiment. (A) is the expanded sectional view which completed the joining of the 1st member and the 2nd member with the outlet member and the adapter of the modification of a 1st embodiment, (B) is a perspective view of the 2nd adapter, (C) is ( The perspective view of the resin screw molded using the second adapter of B), (D) is the perspective view of the second adapter of another embodiment, (E) is using the second adapter of (D) It is a perspective view of the shape | molded resin screw. (A) is an enlarged sectional view in which the first member and the second member are joined with the outlet member and the adapter of the second embodiment, and (B) is a partial section of the main member used in (A). The perspective view and (C) are enlarged cross-sectional views in which another first member and the first member are completely joined by the outlet member and the adapter of the modification of the second embodiment. (A) is the expanded sectional view which completed the joining of the 1st member and the 1st member with the exit member and the adapter of 3rd Embodiment, (B) is the perspective view made into the partial cross section of the main member used for (A) FIG. It is the expanded sectional view which completed the joining of the 1st member with a metal nut, and the 2nd member with the outlet member and the adapter of the modification of 3rd Embodiment. (A) is the expanded sectional view which completed the joining of the 1st member and the 2nd member with the outlet member and the adapter of a 4th embodiment, (B) was made into the partial section of the main member used for (A). It is a perspective view. It is the expanded sectional view which completed the joining of the 1st member and the 2nd member with a metal volt | bolt with the exit member and the adapter of the modification of 4th Embodiment. (A) is the expanded sectional view which completed the joining of the 1st member and 2nd member of another embodiment with an exit member and the adapter of 1st Embodiment, (B) is another embodiment of (A). It is the perspective view which decomposed | disassembled the 1st member and the 2nd member. (A) is the exit member and the adapter of the first embodiment, and is an enlarged cross-sectional view in which the first member, the second member, and the third member of still another embodiment have been joined, and (B) of (A). It is the exploded perspective view of the 1st member of another embodiment, the 2nd member, and the 3rd member. (A) is the expanded sectional view which completed the joining of the 1st member and the 2nd member with the exit member and the adapter of 5th Embodiment, (B) is the 1st member manufactured by the manufacturing apparatus of (A), the 1st The perspective view of 2 member and solidified molten resin, (C) is an expanded sectional view which completed the joining of the 1st member and the 2nd member with the outlet member and the adapter of the modification of a 5th embodiment, (D) is ( It is a perspective view of the 1st member manufactured by the manufacturing apparatus of C), the 2nd member, and the solidified molten resin. (A) is an enlarged sectional view of the outlet member and the adapter of the modified example of the first embodiment, the first member and the second member are joined by connecting the pore diameter, (B) is used in (A) It is the perspective view made into the partial cross section of the main member. It is an expanded sectional view which completed the joining of the 1st member and the 2nd member with the outlet member and the adapter of a 6th embodiment. (A) is the expanded sectional view which completed the joining of the 1st member and the 2nd member with the outlet member and the adapter of a 7th embodiment, (B) is the 1st member manufactured by the manufacturing device of (A), the 1st A perspective view of the two members and the solidified molten resin, (C) is an enlarged sectional view taken along arrow Y1-Y1 in (B), (D) is an enlarged sectional view taken along arrow X1-X1 in (B), and (E) is a first sectional view. It is a perspective view of 2 adapters. (A) is a sectional view of one of the divided melters formed only by a long long large diameter cylindrical portion, and (B) is formed by a short long large diameter cylindrical portion and an outflow side small opening. It is sectional drawing of the other divided | segmented melter. (A) is a partial cross-sectional view of a state in which the outlet of the outlet member is screwed to the first adapter, and (B) is a main part in which a heat insulating material of a ceramic coating material is interposed in the screw hole portion in (A). Sectional drawing, (C) is a sectional view of the principal part of the modified example of (B) in which the hole is simply formed, and (D) and (E) are side views of a partial section of another embodiment of the nozzle part of the outlet member. It is. (A) is a cross-sectional view of the gate pin opening / closing mechanism at the exit member location, (B) is an enlarged view of (α) location in (A), and (C) includes a partial side view of Y4-Y4 arrow in (A). It is an expanded sectional view. It is the simplification figure as an image which provided this invention in the arm of the robot.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the main configuration of the present invention includes a resin melt injection apparatus A that injects a molten resin q and an adapter 8. The resin melt injection apparatus A and the adapter 8 are apparatuses for resin-bonding the first member 91 and the second member 92 to each other.

  The material of the first member 91 and the second member 92 can be metal, glass, resin, timber, etc., but generally there are many metals. Further, the material of the first member 91 and the second member 92 is often the same material, such as aluminum or iron, but there may be different materials depending on the application. That is, aluminum and iron, iron and plastic, and the like.

  Since the resin bonding apparatus of the present invention has high injection performance, it can be used in a wide range of materials from low-temperature molten resins (general-purpose plastic, ABS, polyethylene, polypropylene, etc.) to high-temperature molten resins (engineering plastic, polyamide, polycarbonate, polyimide, etc.). Therefore, various selections can be made depending on the application. In addition, an appropriate color can be selected depending on the product.

  In the resin melt injection apparatus A, a melter 2 for melting pellets p, p,... Is fixed below the cylinder 1, and is shown in FIGS. The main structure is that the cylinder 1, the fuser 2, the plunger 4, the driving means 3 for reciprocating the plunger 4, the outlet member 5 having the nozzle portion 51, and the fuser 2 are heated. And heating means 6.

  As shown in FIG. 1, the resin melt injection apparatus A is fixed to an end of an upper clip portion 97a provided on a column portion 96 on a base 95 of a small stand B (about 0.5 m to about 1 m) so as to be vertically adjustable. Further, the outlet member 5 below the cylinder 1 of the resin melt injection apparatus A is supported and fixed together with a fixing frame 97c for supporting and fixing the periphery of an upper adapter 81 (described later) provided at the tip of the lower clip portion 97b. It is configured. In particular, the lower clip portion 97b and the fixed frame 97c can withstand pressing from the lower side.

  As shown in FIG. 1, the lower adapter 82 is fixed on a pedestal 98a of an elevating device 98, on which a first member 91 and a second member 92 can be set. When the elevating device 98 is appropriately raised, the first member 91 and the second member 92 are held in a pressed state so as to match the upper adapter 81. In this state, the molten resin q is injected from the resin melt injection apparatus A. Hereinafter, since the resin melt injection apparatus A has a feature, this configuration will be described first, and then the adapter 8 will be described sequentially.

  An outlet member 5 is provided at the end (lower end in each figure) of the cylinder 1 of the resin melt injection apparatus A, and the melter 2 and the plunger 4 that reciprocates are provided therein. In the embodiment, the plunger 4 is formed with a pressing block 41 at the front end (lower end in each figure), and the outer periphery from the front end to the rear end is formed as a cylindrical outer peripheral side surface 42.

  In addition, a heat insulating block 43 made of hard heat-resistant synthetic resin is fixed to the front surface (lower surface) of the press block 41 as required. This insulates between the melter 2 and the plunger 4 so that the heat of the melter 2 is not taken away by the plunger 4, and the plunger 4 is heated to heat the drive means 3. Can be prevented from conducting.

  The drive means 3 includes a motor drive unit 31, a pinion gear 32 and a rack shaft 33. Alternatively, although not shown, there is also a drive means 3 in which the rod reciprocates by driving a motor drive unit 31 with a speed reducer and a ball screw and a ball screw nut drive. The lower end of the rack shaft 33 is in contact with the approximate center of the pressing block 41, and the lower end of the rack shaft 33 is fixed to the pressing block 41 with a bolt.

  The rear side of the rack shaft 33 is provided in a motor case 38 of the motor drive unit 31 via a guide 34 so as to be slidable in the vertical direction. The pinion gear 32, the rack shaft 33, etc. are made of iron or stainless steel. The motor drive unit 31 is configured by a brushless motor, a stepping motor, or the like, and is configured to be capable of highly accurate drive control.

  The material of the cylinder 1 needs to be heated quickly, and iron or stainless steel with a high iron content is suitable. The cylinder 1 is configured as an elongated cylinder body 11, and a tubular supply pipe 12 is connected to a pellet supply port 11 a formed at an appropriate position on the plunger 4 side.

  The upper end of the supply pipe 12 is configured to communicate with a hopper 18 for storing pellets p, p,. The supply pipe 12 may be composed of a part integrated with the cylinder 1 and an appropriate pipe. The cylinder main body 11 is a cylindrical member, and an inner side of the cylinder main body 11 has a substantially columnar space surrounded by an inner peripheral side surface 11b.

  The thickness of the cylinder body 11 is preferably about 2 mm. A large number of pellets p, p,... Can be charged into the hopper 18, and the charged pellets p, p,... Are fed into the cylinder body 11 from the pellet supply port 11 a through the supply pipe 12. Further, although not particularly shown, the supply pipe 12 may be provided with a screw conveyance or pneumatic device to forcibly introduce the pellets p, p,.

  The outlet member 5 is mounted on one end side (lower end) of the cylinder body 11 in the axial direction (longitudinal direction). The outlet member 5 includes a nozzle part 51, a funnel part 52, and a connection part 53. The nozzle part 51 is composed of an injection tip 51a and a base part 51b [see FIGS. 1 and 5A].

  The injection tip 51a has a small diameter, and the base 51b has a slightly large diameter through a step. An insertion hole 81 a is formed in the first adapter 81 of the adapter 8 so that the nozzle portion 51 can be stored properly. The connecting portion 53 of the outlet member 5 and the cylinder main body 11 are detachable with a structure having a screw structure (an outer screw, an inner screw). The material of the nozzle part 51 is preferably a material having good thermal conductivity, and specifically, beryllium copper or copper is desirable.

  The melting device 2 is formed by a large number of melting holes 22, 22,... In a vessel main body portion 21 having a substantially cylindrical shape (see FIGS. 1 to 3, 14 to 17, etc.). The material of the vessel body 21 is preferably a material having a large heat capacity and good heat conduction. Specifically, copper or beryllium copper is used. The vessel main body 21 is fixed and arranged on the front end side (downward in FIG. 1) inside the cylinder main body 11 of the cylinder 1 (see FIGS. 1, 2A and 2B).

  As shown in FIG. 4 (A), the vessel main body 21 of the melter 2 is formed in a cylindrical shape as described above, and in the vessel main body 21, The surface on the facing side and the side from which a large number of pellets p, p,... Flows is referred to as an inflow side surface portion 21a. The surface opposite to the inflow side surface portion 21a faces the outlet member 5, and the surface on the side from which the molten resin q flows out is referred to as an outflow side surface portion 21b.

  Further, the outer peripheral side surface of the vessel main body 21 is referred to as a circumferential side surface 21c. The vessel body 21 has a cylindrical shape as described above. The diameter D2a of the inflow side surface portion 21a and the diameter D2b of the outflow side surface portion 21b are the same as those of the circumferential side surface 21c along the axial direction. It is an exact cylindrical shape having the same diameter (see FIGS. 4A and 4B).

  Next, a large number of melting holes 22 are formed in the vessel main body 21 formed in a columnar shape. Specifically, it is formed between the inflow side surface portion 21a and the outflow side surface portion 21b and along the axial direction (longitudinal direction) of the vessel main body portion 21 (FIGS. 1 and 2). reference). In the embodiment, the tip is formed to be narrowed.

  The first embodiment of the melting hole 22 has a large diameter as the inflow side large opening 22a so that the inflow side large opening 22a becomes the outflow side small opening 22b with respect to the longitudinal direction of the vessel body 21. The cylindrical portion 22d is formed close to the end portion, and the outflow side small opening 22b is formed only at the end portion (lower end) (see FIGS. 4A and 4B).

  In the second embodiment of the melting hole 22, the large diameter of the inflow side large opening 22a is larger than the inner diameter of the outflow side small opening 22b and smaller than the inner diameter of the inflow side large opening 22a. It is formed as a conical hole up to the end (lower end) side, and only the end is formed as the outflow side small opening 22b [see FIG. 4 (F)].

  In FIG. 4C, the inflow side large opening 22a of the melting hole 22 is formed in a circular cross section, and the inlet portion of the inflow side large opening 22a is adjacent to each other with a dish-like chamfer 22a1 formed. A portion serving as a boundary between the dish-shaped chamfers 22a1 and 22a1 of the inflow side large opening 22a may be formed as a blade shape 22s.

  Due to the presence of the blade shape 22s, the pellet p is often crushed and finely separated at the position of the blade shape 22s, and the pellet p becomes easier to enter through the inflow side large opening 22a, thereby promoting the melting of the pellet p. It also exhibits the effect of

  The inflow side large opening 22a of the melter 2 is located on the inflow side surface portion 21a side of the main body portion 21 and faces (or opposes) the plunger 4 side [FIGS. 1, 2A and ( See B)]. Further, the outflow side small opening 22b of the melter 2 is located on the outflow side surface portion 21b and faces (or faces) the outlet member 5 (see FIGS. 1, 2A and 2B).

  As described above, the inflow side surface portion 21a of the melter 2 is provided with inflow side large openings 22a, 22a,... Of a large number of melting holes 22, 22,. The pellets p, p,... Flow into the inflow side large opening 22a facing the plunger 4 and are referred to as the inflow side of the melter 2.

  Even if the large-diameter cylindrical portion 22d is formed close to the end portion on the inlet side and the outflow side small opening 22b is formed only at the end portion (lower end), the melting hole 22 is first large in the inflow side of the melting hole 22. The opening 22a has such a size that the entire pellet p can enter, and at least a part (part) of the pellet p can enter. The specific size of the inflow side large opening 22a is a diameter that allows the pellets p, p,.

  As the pellet p moves from the inflow-side large opening 22a to the outflow-side small opening 22b of the melting hole 22, the melting progresses and completes in the vicinity of or near the outflow-side small opening 22b, and is completely liquid. And flows out from the outflow side small opening 22b and further out from the tip of the outlet member 5.

  The outflow side small opening 22b has a diameter of about 1 to 2 mm so that the pellets p, p,... Although the melting hole 22 has a shape with a narrowed tip (see FIG. 3A), it is experimentally a cone having a substantially tapered shape along the axial direction (longitudinal direction) as conventionally known. It can be melted in substantially the same manner as that of the shape.

  The motor drive unit 31 is configured by a brushless motor, a stepping motor, or the like, and is configured to be capable of highly accurate drive control. In particular, it is possible to precisely control the injection operation of the molten resin q while melting the pellet p in consideration of the material of the pellet. As a result, the amount, time and injection pressure at which the resin can be melted can be accurately controlled, and optimum resin bonding can be achieved.

  For example, by setting the injection process time of the molten resin q that can be resin-bonded every time as the total volume of the pellets p, p,... The resin bonding in the process can be continuously performed many times (about 40 to 60 times). When all the pellets p, p,... Are melted and injected after many injections, the plunger 4 retracts instantaneously (about 1 second), and then the pellets p, p,. In particular, the brushless motor is suitable for accurately controlling the low-speed melting and injection time and the high-speed pellet p charging time.

  In particular, in the case of the fixed type of the melting device 2, the molten resin is injected from the tip of the outlet member 5 while melting the pellets p, p,. In the case of the fixed type of the melter 2, since the generation and injection of the molten resin are simultaneous, the first member 91 that performs resin bonding by controlling the rack speed of the driving unit 3 according to the resin bonding amount. In addition, by adopting a method of controlling the feed amount of the second member 92, continuous joining can be performed many times.

  The heating means 6 is a structural member that heats the melting device 2 from the outer peripheral surface of the cylinder body 11 and is configured in a cylindrical shape so that the thermal conductivity to the melting device 2 is good. Specifically, a sufficient amount of heat can be obtained with an IH heater or the like configured in a winding shape. The heating means 6 serves to heat the melter 2 in the cylinder body 11 of the cylinder 1.

  Specifically, the heating means 6 is preferably an electromagnetic induction device, that is, an IH (Induction Heating) coil, and an IH coil is wound around a heat insulating material coil bobbin made of resin or ceramic. The bobbin shape is set so that the distance between the IH coil and the outer peripheral side surface of the cylinder body 11 is optimal. The input power is preferably variable from 0 to 1 Kw by the control device.

  A thermocouple is attached to the cylinder 1 so that the temperature of the cylinder 1 can be set to a set value. As another type of the heating means 6, a band heater may be used. Furthermore, the heating means 6 is not limited to that described above, and any other heating device that can be used in the present invention may be used.

  In the melter 2, the inflow side large opening 22 a is normally set to a size that allows the entire average size pellet p to enter from the inflow side large opening 22 a (see FIG. 3A). The pellets p, p,... That have entered the melting holes 22, 22,... Are pressed by the pellets p, p,. 6 to maintain the temperature at which the pellet p is melted.

  Accordingly, the pellet p entering from the inflow side large opening 22a melts toward the center of the pellet p as it moves from the inflow side large opening 22a toward the outflow side small opening 22b [see FIG. 3A]. The pellet p is set so that the periphery of the pellet p is substantially uniformly surrounded by the inner peripheral wall surface of the melting hole 22 in the initial state where the pellet p starts to enter the large opening 22a.

  Then, as the pellet p moves through the melting hole 22 toward the outflow side small opening 22b, the size is gradually reduced while being melted (see FIG. 3A). Even when the pellet p moves while melting toward the outflow side small opening 22b side, the molten resin gradually increases, so that the periphery of the molten pellet p is kept evenly surrounded. Therefore, the pellet p is melted quickly.

  That is, the periphery of each pellet p is substantially uniformly surrounded by the inner wall surface of the melting hole 22, and always maintains a state of being close to or in contact with the inner wall surface (see FIG. 3A). Then, as the melting of the pellet p progresses, the melting hole 22 is further advanced to promote the melting of the pellet p. Moreover, since the pellet p is melted and liquefied inside the melting hole 22, the melting of the pellet p fed later is further promoted by the heat of the already liquefied pellet pa [see FIG. 3 (A)]. ].

  As described above, the large-diameter cylindrical portion 22d as the inflow side large opening 22a is formed close to the end portion, and the outflow side small opening 22b is formed only on the outflow side [FIG. )]], The pellet p is pressed on the back side and melted by a heating force, so that the same action as a conical melting hole can be exerted (see FIG. 3B). Such drilling of the large-diameter cylindrical portion 22d can provide a cheaper machining than the conical machining.

  A large number of pellets p, p,... Can be melted only in a necessary amount, so that the material is not exposed to thermal and mechanical stress in the cylinder body 11 for a long time. Therefore, high-quality resin bonding can be performed. In addition, the resin melt injection apparatus according to the present invention has high melting efficiency and does not require the addition of more materials than necessary, so that the entire apparatus is reduced in size, saving power and resources. In addition, a high-quality molten resin q can be obtained because the high-temperature state of the resin can be shortened to the minimum time by reaching the optimum injection temperature and the maximum temperature in the final melting process immediately before injection.

  In the above description, a large number of pellets p are continuously supplied from the pellet supply port 11a. However, as shown in FIG. 1, a predetermined amount of pellets p may be supplied. Specifically, a shutter mechanism 16 is provided. The shutter mechanism 16 includes a shutter plate 16a and a drive source 16b such as a solenoid for driving the shutter plate 16a up and down.

  The lower end portion of the shutter plate 16 a is inserted into a groove portion 12 a formed at the base portion of the supply pipe 12 to close the pellet supply port 11 a, and a flow of a large number of pellets p flowing into the supply pipe 12. Is configured to shut off. In the case of such a shutter mechanism 16, the pellet p supplied from the hopper 18 is controlled by controlling the time for opening and closing the shutter plate 16a in consideration of the flow speed and flow time of a large number of pellets p. Can be controlled to an appropriate amount.

  Next, the configuration of the adapter 8 will be described. The basic configuration of the adapter 8 includes a first adapter 81 and a second adapter 82. As shown in FIGS. 5A to 5C, the first embodiment of the adapter 8 includes a first adapter 81 and a second adapter 82. The first adapter 81 includes the resin melt injection device. An insertion port 81a into which the nozzle portion 51 through which the molten resin q generated in A is injected is formed.

  On the back surfaces of the first adapter 81 and the second adapter 82, the escape holes of the molten resin q are prevented while closing the coupling holes 911 and 921 respectively drilled in the first member 91 and the second member 92 for resin bonding. It has blocking surfaces 81b and 82b as surfaces. Specifically, when the upper and lower surfaces of the first member 91 and the second member 92 are flat surfaces, the blocking surfaces 81b and 82b are simply formed as flat surfaces.

  In the case of the adapter 8 of the first embodiment, the back surface (lower surface) of the first adapter 81 and the back surface (upper surface) of the second adapter 82 are only formed with the blocking surfaces 81b and 82b as flat surfaces. Therefore, expansion holes 911a and 921a for preventing detachment and tapered holes 911b and 921b are formed in the coupling holes 911 and 921 respectively formed in the first member 91 and the second member 92.

  In the case of the embodiment of FIG. 5, the case has been described in which the diameter of the coupling holes 911 and 921 is larger than the diameter of the injection port 51 a of the nozzle portion 5. FIG. 15 shows a case where the diameters of the coupling holes 911 and 921 are smaller than the diameter of the injection port 51a. This is a modification of the adapter 8 according to the first embodiment. Also in this case, the first member 91 and the second member 92 are provided with the coupling holes 911 and 921 and tapered holes 911b and 921b for preventing the detachment. The first adapter 81 is formed with an insertion port 81a into which the nozzle portion 51 into which the molten resin q generated by the resin melt injection apparatus A is injected.

  As shown in FIG. 15, on the back surface of the second adapter 82, the molten resin q escapes while closing the coupling holes 911 and 921 drilled in the first member 91 and the second member 92 for resin bonding, respectively. It has blocking surfaces 81b and 82b as surfaces to prevent. Further, when the diameter of the coupling holes 911 and 921 is smaller than the diameter of the injection port 51a, the first adapter 81 may not be necessarily required. However, when the molten resin q is injected and bonded, a relatively high pressure is applied. Therefore, it is important that the first adapter 81 and the second adapter 82 are firmly fixed so as not to be separated from each other.

  In the case of a modification of the adapter 8 of the first embodiment, as shown in FIG. 6, a brass screw projection 82 c and a minus screw projection 82 d are slightly formed on the back surface of the second adapter 82, and the other surfaces Each has a closed surface 82b as a flat surface. In this case, the coupling holes 911 and 921 respectively drilled in the first member 91 and the second member 92 for resin bonding are formed as screw holes.

  In this way, when the first member 91 and the second member 92 are resin-bonded, when it is desired to temporarily separate and disassemble the first member 91 and the second member 92 later, the resin The bonded and cured resin can be used as a headless screw. When it is desired to finally disassemble, the molten resin q is used. Therefore, when heated to a temperature equal to or higher than the melting temperature of the resin, the maximum effect is achieved in that the bonding is released and disassembly and separation can be easily performed.

  As shown in FIG. 7A, the second embodiment of the adapter 8 includes a first adapter 81 and a second adapter 82. The first adapter 81 is generated by the resin melt injection apparatus A. An insertion port 81a into which the nozzle part 51 through which the molten resin q is injected is inserted, and the back surface of the first adapter 81 is closed with a coupling hole 911 drilled in the first member 91. A concave portion 81c is provided which forms a bulging portion corresponding to a bolt head having a diameter larger than the diameters of the coupling holes 911 and 921. A flat surface other than the concave portion 81c is formed with a closing surface 81b as a surface for preventing the molten resin q from escaping.

  The second adapter 82 is formed with a flat surface that only blocks the coupling hole 921 as a screw hole drilled in the second member 92, and a blocking surface 82b is formed as a surface that prevents the molten resin q from escaping. Has been. In this case, the first member 91 and the second member 92 are joined by resin bolts. In the case where it is desired to disassemble the resin bolt, there is an advantage that the resin bolt cured by the resin bonding can be loosened and removed, and it can be returned to the original state.

  A modification of the second embodiment of the adapter 8 includes a first adapter 81 and a second adapter 82 as shown in FIG. 7C, and the first adapter 81 includes the resin melt injection apparatus A. An insertion port 81a into which the nozzle portion 51 into which the molten resin q generated in step 1 is injected is formed, and a coupling hole drilled in the first member 91 is formed on the back surface of the first adapter 81. A blocking surface 81b is formed as a surface that blocks 911 and prevents escape of the molten resin q. 7C, a hard synthetic resin heat insulating material 85 is interposed between the nozzle portion 51 and the nozzle portion 51 is clogged because it is difficult to cool the molten resin q. It may be configured to prevent this.

  The second adapter 82 is provided with a recess 82e that closes the coupling hole 921 drilled in the second member 92 and forms a bulging portion corresponding to a bolt head having a diameter larger than the diameter of the coupling hole 921. ing. A flat surface other than the recess 82e is formed with a blocking surface 82b as a surface for preventing the molten resin q from escaping. Also in this case, the first member 91 and the second member 92 are joined by resin bolts. In the case where it is desired to disassemble the resin bolt, there is an advantage that the resin bolt cured by the resin bonding can be loosened and removed, and it can be returned to the original state.

  As shown in FIGS. 8A and 8B, the third embodiment of the adapter 8 includes a first adapter 81 and a second adapter 82, and the first adapter 81 includes the resin melt injection device. An insertion port 81a into which the nozzle portion 51 through which the molten resin q generated in A is injected is formed. The back surfaces of the first adapter 81 and the second adapter 82 close the coupling holes 911 and 921 drilled in the first member 91 and the second member 92, respectively, and have a diameter larger than the diameter of the coupling holes 911 and 921. Concave portions 81d and 82f that form protruding portions are provided. The flat surfaces other than the recesses 81d and 82f are formed with blocking surfaces 81b and 82b as surfaces for preventing escape of the molten resin q.

  Specifically, in the embodiment, as shown in FIGS. 8A and 8B, the first and second members 91 and 92 for bonding the resin are closed by the coupling holes 911 and 921 respectively. However, the bulging resin portions Q1 are formed above and below the 911, 921, and the molten resin q is joined (fixed) as a rivet as a whole. In the present invention, if the first member 91 and the second member 92 exist, the resin can be joined in a moment. Airtightness and watertightness can be enhanced.

  Moreover, as shown in FIG. 9, the modification of 3rd Embodiment of the said adapter 8 consists of the 1st adapter 81 and the 2nd adapter 82, but the 1st adapter 81 requires the metal nut 67 previously. This is a type that is fixed by welding or the like. In this case, the first adapter 81 is formed with a recess 81e in which the metal nut 67 is accommodated, and the second adapter 82 is formed with a recess 82g in which the bolt head of the resin bolt is accommodated. It is.

  The bolt head of the resin bolt may be a hexagon head, a square head, or a bolt head into which a hexagon wrench is inserted. Further, the metal nut 67 is not limited to a square or an octagon. Also in this embodiment, there is an advantage that when the first member 91 and the second member 92 are to be separated and disassembled later, the resin bolts cured by the resin bonding can be loosened and removed. In particular, because of the metal nut 67, it can be firmly joined and can be returned to its original state. If the metal nut 67 is not welded, there is an effect that the whole is easily separated at the time of disassembly.

  In the fourth embodiment of the adapter 8, as shown in FIGS. 10A and 10B, the adapter 8 is configured only as the first adapter 81. The first adapter 81 is formed with an insertion port 81a into which the nozzle portion 51 into which the molten resin q generated by the resin melt injection apparatus A is injected, and the back surface of the first adapter 81 And a recess 81f that closes the coupling hole 911 drilled in the first member 91 and forms a bulging portion as a bolt head of a resin bolt having a diameter larger than the coupling hole diameter. A blocking surface 81b is formed as a preventing surface.

  At this time, the second member 92 has a hole 92d as a screw hole. When the strength is required, the hole portion needs to be formed relatively deeply. With this structure, the second adapter 82 can be dispensed with. The coupling hole 911 of the first member 91 has a simple hole. In this type of embodiment, it is configured with only one adapter and can be provided at low cost.

  In the modification of the fourth embodiment of the adapter 8, as shown in FIG. 11, the adapter 8 is also configured only as the first adapter 81. The second member 92 is a type in which a metal bolt 68 is fixed in advance by welding or the like as necessary. For this reason, since the bolt head of the metal bolt 68 is supported, there is no resin leakage and the second adapter 82 can be dispensed with. In this case, the first adapter 81 is provided with a recess 81g as a resin bag nut that is accommodated so as to cover the bolt shaft 68b of the metal bolt 68, and as a surface for preventing escape of the molten resin q. A blocking surface 81b is formed.

  The resin bag nut may be a hexagon, a square, or a shape into which a hexagon wrench can be inserted. Further, the bolt head of the metal bolt 68 is not limited to a square or an octagon. Also in this embodiment, there is an advantage that when the first member 91 and the second member 92 are to be separated and disassembled later, the resin bag nut cured by the resin bonding can be loosened and removed. In particular, because of the metal bolt 68, it can be firmly joined and can be returned to its original state. If the metal bolt 68 is not welded, it is easy to separate the whole when disassembling.

  In the case of FIG. 11, the first member 91 and the second member 92 are formed with the coupling holes 911 and 921, respectively. However, after the resin bag nut is joined with the resin, the bolt of the metal bolt 68 is formed. The gap between the shaft and the coupling holes 911 and 921 is also clogged with the molten resin q, and airtightness and watertightness can be outstanding.

  FIGS. 12A and 12B show the adapter 8 according to the first embodiment, but the shape of the holes of the first member 91 and the second member 92 for resin bonding is special. Is formed. The first member 91 is formed with a middle hole 911x and a large-diameter hole 911y in a stepped manner, and the second member 92 is formed with a plurality (four) of small holes 911z. A tapered hole is formed at the end. Even if such a complicated hole is formed, the resin bonding of the present invention has an advantage that it can be instantaneously performed.

  FIGS. 13A and 13B also show the first embodiment as the adapter 8, but the first member 91 and the second member 92 for resin bonding, and further the third member. And the hole shape is specially formed thereon. The first member 91 has a tapered hole 911x, the second member 92 has a large-diameter hole 911y, and the third member 92 has a plurality of (three) small holes. 911z is formed, and a tapered hole is formed at the end of the small hole. Even if such a complicated hole is formed, the resin bonding of the present invention has an advantage that it can be instantaneously performed.

  As shown in FIG. 14A, the fifth embodiment of the adapter 8 includes a first adapter 81 and a second adapter 82. The first adapter 81 is generated by the resin melt injection apparatus A. An insertion port 81a into which the nozzle portion 51 through which the molten resin q is injected is inserted, and continuous grooves 81n and 82n surrounding the first member and the second member are formed. Further, the second adapter 82 communicates with the injection port 81 a and overlaps with the back surface of the second adapter 82. Further, the shape of the second adapter 82 is formed to be equivalent to the shape of the first adapter 81.

  In particular, a continuous groove portion 82n surrounding the first member 91 and the second member 92 is also formed on the inner surface of the second adapter 82, and the groove 81n of the first adapter 81 is also in communication. . With such a structure, the first member 91 and the second member 92 are joined even if there are no holes, notches or the like. Further, when it is desired to disassemble, the first member 91 and the second member 92 are heated, and when the temperature becomes higher than the melting temperature of the resin-bonded molten resin q, the resin can be dissolved and removed. it can. In other words, the two resin-bonded members can be returned to the original state of the first member 91 and the second member 92 in an orderly manner.

  A modification of the fifth embodiment of the adapter 8 includes a first adapter 81 and a second adapter 82, as shown in FIG. 14C. The first adapter 81 includes the resin melt injection apparatus A. An insertion port 81a into which the nozzle portion 51 into which the molten resin q generated in step S1 is injected is formed, and a continuous large recess 81m surrounding the entire periphery of the first member 91 and the second member 92; 82m is formed.

  Further, as shown in FIG. 14C, the second adapter 82 is connected to the inlet 81a and overlaps with the back surface of the second adapter 82. Further, the shape of the second adapter 82 is formed to be equivalent to the shape of the first adapter 81. The second adapter 82 is also formed with continuous large recesses 81m and 82m surrounding the entire periphery of the first member 91 and the second member 92. The overlapping surface of the first adapter 81 and the second adapter 82 is formed with a step or interval. Further, as shown in FIG. 14D, the first member 91 and the second member 92 completed after the resin bonding are bonded in a separated state.

  In the sixth embodiment of the adapter 8, as shown in FIG. 16, two resin melt injection apparatuses A and three adapters 8 are configured. Specifically, the first adapter 81 is formed with an insertion port 81a into which the nozzle portion 51 into which the molten resin q generated by the resin melt injection apparatus A is injected, and the first adapter 81 On the back surface of one adapter 81, a closing surface 81 b is formed as a surface that prevents the molten resin q from escaping while closing the coupling hole 911 formed in the first member 91.

  The second adapter 82 is provided with a recess 82 e that closes the coupling hole 921 drilled in the second member 92 and forms a bulging portion corresponding to a bolt head having a diameter larger than the diameter of the coupling hole 921. . A flat surface other than the recess 82c is formed with a blocking surface 82b as a surface for preventing the molten resin q from escaping. Also in this case, the first member 91 and the second member 92 are joined by resin bolts. In particular, the second adapter 82 is configured to be wide.

  Further, as shown in FIG. 16, the third adapter 83 is provided on the upper side of the first member 91 at a position slightly away from the first adapter 81. That is, as shown on the right side of FIG. 16, the third adapter 83 is formed with an insertion port 83a into which the nozzle portion 51 into which the molten resin q generated by the resin melt injection apparatus A is injected is inserted. In addition, the back surface of the third adapter 81 closes the coupling hole 911 drilled in the first member 91 and forms a bulging portion corresponding to a bolt head having a diameter larger than the diameters of the coupling holes 911 and 921. A recess 83c is provided.

  A flat surface other than the recess 83c is formed with a blocking surface 83b as a surface for preventing the molten resin q from escaping. The third adapter 83 is formed with a flat surface that only blocks the coupling hole 921 as a screw hole drilled in the second member 92, and a blocking surface 82b is formed as a surface that prevents the molten resin q from escaping. Has been. In this case, the first member 91 and the second member 92 are joined by resin bolts.

  As shown in FIG. 17, the seventh embodiment of the adapter 8 uses a plurality of nozzles in order to widen the resin flow region when joining in a large area such as a thin plate or sheet. That is, it is composed of two resin melt injection apparatuses A and two adapters 8. Specifically, large concave portions 81s and 82s for forming plate-like resin coupling bodies q81 and q82 are provided in concave shapes on the opposing surfaces of the first adapter 81 and the second adapter 82, respectively.

  In the first member 91 and the second member 92 such as a thin plate and a sheet, connection holes 912 and 921 as long holes are formed at three positions between the plate widths. That is, three locations are provided within the width of the recesses 81m and 82m. Further, the first adapter 81 is formed with insertion ports 81a into which the nozzle portion 51 into which the molten resin q generated by the resin melt injection apparatus A is injected is inserted in two places. The manufactured product is as shown in FIG. 17 (B), but the cross sections of the resin coupling bodies q81, q82 and the coupling holes 912, 921 are shown in FIGS. 17 (C) and (D). Yes.

  In particular, when the resin coupling bodies q81 and q82 are large and large, it is necessary to control the temperature. Therefore, as shown in FIG. 17 (E), a water-cooling hole 82p is provided in the second adapter 82. Two rows are provided, and communication pipes 82x, 82y, and 82z are provided so as to communicate with each other, and a cooling configuration is provided. Further, two rows of water-cooling holes 81p are also provided in the first adapter 81, and communication pipes 81x, 81y, 81z are also provided so as to communicate with each other. Furthermore, a plurality of Peltier elements 87 for cooling may be provided on the back side of the first adapter 81 and the second adapter 82.

  As shown in FIG. 20, gate pin opening / closing mechanisms are provided at five outlet members as required. The gate pin opening / closing mechanism is composed of a bar-shaped outlet mounting portion 56 laid horizontally in five outlet members and a gate pin 55. The lower end (front end) of the gate pin 55 is formed as a sharpened portion 55a, and the upper portion (rear portion) is accommodated in the accommodating portion 56a of the outlet mounting portion 56 so as to be movable up and down. The molten resin q flows down from the left and right sides of the outlet mounting portion 56.

  Further, a compression spring 57 (compression spring) is interposed between the upper end (rear end) of the gate pin 55 and the upper end of the storage portion 56a so that the gate pin 55 is always elastically biased downward. It is configured. The sharpened portion 55a of the gate pin 55 and the inner diameter of the injection tip 51a1 of the injection port 51a of the nozzle unit 51 are configured to fit with no gap, and most of the sharpened portion 55a It exists in the injection port 51a.

  The operation state of the gate pin opening / closing mechanism will be described. In such a configuration, when the molten resin q is filled in the pressurized state at the five outlet members, the pressurized molten resin q is also added to the sharpened portion 55a of the gate pin 55 around the entire periphery. Then, as shown in FIG. 20B, the force f applied to the sharpened portion 55a becomes an upward inclination force, and only this vertical component force lifts the gate pin 55, and at that moment, the injection port The injection tip 51a1 of 51a is opened, and the molten resin q is injected.

  When the injection is finished, the pressurized state of the molten resin q disappears, the gate pin 55 is elastically biased by the compression spring 57, and descends to close the injection tip 51a1 at the sharpened portion 55a. By providing such a gate pin opening / closing mechanism, the resin cured by resin bonding and the molten resin q in the five outlet members can be well separated and orderly resin bonding can be achieved.

  In the embodiment shown in FIG. 21, the resin melt injection apparatus A and the first adapter 81 of the main part of the present invention are attached to the tip of the arm 89 of the robot 88, and the second tip is attached to the tip of the arm 89 of another robot 88. The adapter 82 is attached, and the first member 91 and the second member 92 having an appropriate shape and material can be bonded to the resin. The robot factory is capable of handling 24 hours. In particular, in FIG. 23, although the resin melt injection apparatus A is described in a considerably large size with respect to the first joint portion of the arm 89 of the robot 88, each component of the resin melt injection apparatus A is easily understood. This is for the purpose of illustration only.

  The first adapter 81 and the second adapter 82 or the third adapter 83 constituting the adapter 8 described above have a flat plate shape, but are shaped to accommodate the first member 91 and the second member 92, There are various shapes that can correspond to a right angle, a corner, a curved plate, a square bar, a round bar, a sheet, and the like, and the shape is not limited to a flat plate shape.

  Further, the material of the first adapter 81 and the second adapter 82 can be metal, glass, resin, timber, etc., but generally there are many metals. The first adapter 81 and the second adapter 82 are often made of the same material. However, depending on the application or the materials of the first member 91 and the second member 92, different materials may be used. That is, aluminum and iron, iron and plastic, and the like.

  And the nozzle part 51 of the location which inject | pours the molten resin q with respect to the said adapter was the structure inserted and fixed to the 1st adapter 81 as shown in FIG. 5 thru | or FIG. ) And (B), the outlet 51 a of the outlet member 5 may be screwed to the first adapter 81. Thereby, the outlet member 5 and the first adapter 81 can be integrated.

  In the enlarged cross-sectional view shown in FIG. 19B, a heat insulating layer 85 (ceramic coating material or the like) may be interposed at a location where the injection port 51a of the outlet member 5 is screwed. In this case, the presence of the heat insulating layer 85 does not conduct heat to the first adapter 81, and the resin joint portion can be solidified at an early stage. In FIG. 19C, a heat insulating layer 85 is interposed while being formed as a simple hole.

  FIG. 19D shows a configuration in which the tip of the nozzle portion 51 of the outlet member 5 is hemispherical, and the pressing direction is slightly deviated from the coupling hole 911 of the first adapter 81. The molten resin q can be reliably inserted. Further, as shown in 19 (E), the tip of the nozzle portion 51 of the outlet member 5 has a tapered shape. In this case as well, it is powerful against the coupling hole 911 of the first adapter 81. Can be pressed.

  The melter 2 has a large number of melt holes 22 formed on one member. In order to increase the amount of melt, the length H0 of the melter 2 in the longitudinal direction [FIG. 4 (B) If the large-diameter cylindrical portion 22d with a long reference length is formed, if the length of the grinding drill is long, it takes time to manufacture and may be expensive.

  However, as shown in FIG. 18 (A), one divided melter 2 formed only by a large-diameter cylindrical portion 22d having a long length H1, a large-diameter cylindrical portion 22d having a short length H2, and an outflow side. The other divided melter 2 formed by the small opening 22b is combined to obtain a desired length H0 as a whole. By forming in this way, a cheaper melting device 2 can be manufactured. Functionally, there is an advantage that it can be melted in the same manner as the integrated one-member melting device 2.

  The attachment device for the resin melt injection apparatus A has been described with reference to FIGS. 1 and 21. However, when the injection pressure is high, the holding fixing force of the first adapter 81 and the second adapter 82 needs to be increased. In some embodiments, a strong clamp may be provided, or the second adapter 82 or the like may be installed on a fixed base, and the resin melt injection apparatus A and the first adapter 81 may be movable. Not limited.

  In the above description of the embodiment, the pellet supply port 11a for supplying pellets is provided on the cylindrical surface of the cylinder 1, but the cylinder 1 is not provided on the surface of the cylinder 1 and is provided near the motor case 38. The pellets may be supplied from an appropriate opening / closing portion provided in the pressure closing portion 41 of the plunger 4 from the case 13 or the like.

  Regarding the above-described embodiment, the following additional notes are disclosed.

(Appendix 1)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; A driving means for reciprocating the plunger in the axial direction and a number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed in the longitudinal direction of the cylindrical main body. The hole has a large diameter cylindrical portion as the inflow side large opening formed near the end and a melter in which the outflow side small opening is formed only on the outflow side, and heating means for heating the melter. The melter is disposed between the plunger and the outlet member, and the plastic pellet supplied from the pellet supply port is inflow side of the melter by pressing the plunger. It is configured to flow in from an opening and flow out as molten resin from the outflow side small opening, and a gate pin opening / closing mechanism is provided at the outlet member portion, and when the molten resin is injected, the gate pin When the nozzle part of the outlet member is opened and the injection is finished, the resin melt injection device in which the gate pin and the nozzle part are closed and the molten resin injected from the outlet member are joined to each other. A resin bonding apparatus comprising: an adapter for injecting the molten resin into at least one side surface of the first member and the second member and holding the molten resin to prevent the molten resin from escaping.

(Appendix 2)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; A driving means for reciprocating the plunger in the axial direction and a number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed in the longitudinal direction of the cylindrical main body. The hole is formed as a conical hole from the large diameter of the inflow side large opening to the end side so as to be a hole larger than the inner diameter of the outflow side small opening and smaller than the inner diameter of the inflow side large opening. And a heating unit that heats the melting device, and the melting device is disposed between the plunger and the outlet member, and includes the pellet supply. The plastic pellet supplied from the mouth is configured to flow from the large inflow side opening of the melter by the pressing of the plunger and flow out as molten resin from the small outflow side opening, and the outlet member. A gate pin opening / closing mechanism is provided at the location, and when the molten resin is injected, the nozzle portion of the gate pin and the outlet member is opened, and when the injection is finished, the gate pin and the nozzle portion are closed. In order to prevent the molten resin from being injected into the molten resin injection apparatus and at least one side surface of the first member and the second member that are joined to each other by the molten resin injected from the outlet member. A resin bonding apparatus comprising: an adapter for holding.

(Appendix 3)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction and a cylindrical plunger on the rear side thereof, a driving means for reciprocating the plunger in the axial direction, and a container body formed in a column shape A large number of melting holes communicating from the inflow side large opening to the outflow side small opening with respect to the longitudinal direction of the part are formed, and the large diameter cylindrical portion as the inflow side large opening is formed to the end portion, And a melter in which the outflow side small opening is formed only on the outflow side, and heating means for heating the melter, and the melter is disposed between the plunger and the outlet member, and the cylinder The plastic pellets supplied between the melter and the plunger in the inside flow from the inflow side large opening of the melter by the pressing of the plunger and flow as molten resin from the outflow side small opening. The molten resin is injected into at least one side surface of the resin melt injection apparatus configured as described above, and the first member and the second member that are joined to each other by the molten resin injected from the outlet member; A resin bonding apparatus comprising: an adapter that is held to prevent escape of the molten resin.

(Appendix 4)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction and a cylindrical plunger on the rear side thereof, a driving means for reciprocating the plunger in the axial direction, and a container body formed in a column shape A large number of melting holes communicating from the inflow side large opening to the outflow side small opening are formed with respect to the longitudinal direction of the portion, and the melting hole has a larger diameter than the inflow side large opening than the inner diameter of the outflow side small opening. A melter that is formed as a conical hole up to the end side so as to be larger and smaller than the inner diameter of the large opening on the inflow side, and only the end is formed as the small opening on the outflow side, and heating the melter And the melting device is disposed between the plunger and the outlet member, and the plastic pellet supplied between the melting device and the plunger in the cylinder is the plan. A molten resin injected from the outlet member, and a molten resin injected from the outlet member. The molten resin injected from the outlet member And an adapter for holding at least one side surface of the first member and the second member that are joined to each other in order to inject the molten resin and prevent the molten resin from escaping. .

(Appendix 5)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; A driving means for reciprocating the plunger in the axial direction and a number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed in the longitudinal direction of the cylindrical main body. The hole has a large diameter cylindrical portion as the inflow side large opening formed near the end and a melter in which the outflow side small opening is formed only on the outflow side, and heating means for heating the melter. The melter is disposed between the plunger and the outlet member, and the plastic pellet supplied from the pellet supply port is inflow side of the melter by pressing the plunger. A shutter mechanism as a drive source such as a solenoid that drives the shutter plate and the shutter plate up and down is provided in the pellet supply port while being configured to flow in from the opening and flow out as molten resin from the small opening on the outflow side. And the molten resin is injected into at least one side of the first member and the second member that are joined to each other by the molten resin injected from the outlet member. A resin bonding apparatus comprising: an adapter that is held to prevent escape of the resin.

(Appendix 6)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; A driving means for reciprocating the plunger in the axial direction and a number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed in the longitudinal direction of the cylindrical main body. The hole is formed as a conical hole from the large diameter of the inflow side large opening to the end side so as to be a hole larger than the inner diameter of the outflow side small opening and smaller than the inner diameter of the inflow side large opening. And a heating unit that heats the melting device, and the melting device is disposed between the plunger and the outlet member, and includes the pellet supply. The plastic pellet supplied from the mouth is configured to flow in from the large inflow side opening of the melter and to flow out as molten resin from the small outflow side opening by pressing of the plunger, and the pellet supply port Includes a resin melt injection device provided with a shutter plate and a shutter mechanism as a drive source such as a solenoid for driving the shutter plate up and down, and a first that joins the melted resin injected from the outlet member with each other. A resin bonding apparatus comprising: an adapter for injecting the molten resin into at least one side surface of the member and the second member and holding the molten resin to prevent escape of the molten resin.

(Appendix 7)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; Driving means having a motor driving section for driving a rack shaft for reciprocating the plunger in the axial direction by a pinion gear, and a large opening on the inflow side with respect to the longitudinal direction of the cylindrical main body section. A large number of melting holes communicating with the small opening are formed, the large-diameter cylindrical portion as the large inflow side opening is formed near the end, and the small outflow side opening is formed only on the outflow side. And a heating means for heating the melter, the melter being disposed between the plunger and the outlet member, and the plastic supplied from the pellet supply port. A resin melt injection device configured such that the pellets flow from the inflow side large opening of the melter by the pressing of the plunger and flow out as molten resin from the outflow side small opening, and are injected from the outlet member The molten resin is injected into at least one side surface of the first member and the second member that are joined to each other by the molten resin, and the adapter is held to prevent the molten resin from escaping. Resin bonding equipment.

(Appendix 8)
A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; Driving means having a motor driving section for driving a rack shaft for reciprocating the plunger in the axial direction by a pinion gear, and a large opening on the inflow side with respect to the longitudinal direction of the cylindrical main body section. A large number of melting holes communicating with the small opening are formed, and the melting hole is changed from a large diameter of the inflow side large opening to a hole larger than an inner diameter of the outflow side small opening and smaller than an inner diameter of the inflow side large opening. A melting hole which is formed as a conical hole up to the end side and only the end portion is formed as the outflow side small opening, and a heating means for heating the melting machine, The plastic pellets arranged between the ranger and the outlet member and supplied from the pellet supply port flow into the melter from the inflow side large opening by the pressing of the plunger, and melt from the outflow side small opening. The molten resin is injected into at least one side surface of the resin melt injection apparatus configured to flow out as the first member and the second member that are joined to each other by the molten resin injected from the outlet member. And an adapter that holds the molten resin to prevent escape of the molten resin.

  The present invention enables extremely wide range of resin bonding in a wide range of two or more members, and has extremely high applicability in all manufacturing industry fields in Japan. Although the present invention has been described with respect to resin bonding, injection into a mold molded with a synthetic resin can also be sufficiently handled.

DESCRIPTION OF SYMBOLS 1 ... Cylinder, 11a ... Pellet supply port, 2 ... Melting device, 21a ... Inflow side surface part,
21b ... Outflow side surface part, 22 ... Melting hole, 22a ... Inflow side large opening, 22b ... Outflow side small opening,
22d ... large diameter cylindrical part, 3 ... driving means, 4 ... plunger, 5 ... outlet member, nozzle part 51,
6 ... heating means, 7 ... on-off valve, 91 ... first member, 92 ... second member, 8 ... adapter,
81: first adapter, 81a: insertion port, 81b, 82b: blocking surface,
82, 81c, 81d, 81e, 81f, 82c, 82f, 82g ... concave portion,
82 ... second adapter, 81s, 82s ... large recess, p ... pellet, q ... molten resin.

Claims (8)

A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; A driving means for reciprocating the plunger in the axial direction and a number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed in the longitudinal direction of the cylindrical main body. The hole has a large diameter cylindrical portion as the inflow side large opening formed near the end and a melter in which the outflow side small opening is formed only on the outflow side, and heating means for heating the melter. Become
The melter is disposed between the plunger and the outlet member, and the plastic pellet supplied from the pellet supply port flows in from the large opening on the inflow side of the melter by the pressing of the plunger, and the outflow side. A resin melt injection device configured to flow out as a molten resin from a small opening;
An adapter for injecting the molten resin and holding the molten resin to prevent escape of the molten resin to at least one side surface of the first member and the second member that are joined to each other by the molten resin injected from the outlet member; A resin bonding apparatus characterized by comprising: A cylinder provided with an outlet member on the front end injection side in the longitudinal direction, a cylindrical plunger on the rear side, and a pellet supply port for supplying plastic pellets to an intermediate position between the plunger and the outlet member; A driving means for reciprocating the plunger in the axial direction and a number of melting holes communicating from the large opening on the inflow side to the small opening on the outflow side are formed in the longitudinal direction of the cylindrical main body. The hole is formed as a conical hole from the large diameter of the inflow side large opening to the end side so as to be a hole larger than the inner diameter of the outflow side small opening and smaller than the inner diameter of the inflow side large opening. A melting part formed only as the outflow side small opening, and heating means for heating the melting machine,
The melter is disposed between the plunger and the outlet member, and the plastic pellet supplied from the pellet supply port flows in from the large opening on the inflow side of the melter by the pressing of the plunger, and the outflow side. A resin melt injection device configured to flow out as a molten resin from a small opening;
An adapter for injecting the molten resin and holding the molten resin to prevent escape of the molten resin to at least one side surface of the first member and the second member that are joined to each other by the molten resin injected from the outlet member; A resin bonding apparatus characterized by comprising:   3. The nozzle of the outlet member according to claim 1 or 2, wherein the adapter includes a first adapter and a second adapter, and the molten resin generated by the resin melt injection apparatus is injected into the first adapter. As a surface that prevents the molten resin from escaping while closing the coupling holes drilled in the first member and the second member on the back surfaces of the first adapter and the second adapter, respectively. A resin bonding apparatus comprising a sealing surface.   3. The nozzle of the outlet member according to claim 1 or 2, wherein the adapter includes a first adapter and a second adapter, and the molten resin generated by the resin melt injection apparatus is injected into the first adapter. An insertion port is formed, and a coupling hole formed in each of the first member and the second member is closed on the back surface of the first adapter or the second adapter, and the diameter is larger than the diameter of the coupling hole. A resin bonding apparatus comprising a recess for forming a protruding portion.   3. The nozzle of the outlet member according to claim 1 or 2, wherein the adapter includes a first adapter and a second adapter, and the molten resin generated by the resin melt injection apparatus is injected into the first adapter. An insertion port is formed, and a coupling hole drilled in each of the first member and the second member is closed on the back surfaces of the first adapter and the second adapter, and the diameter is larger than the diameter of the coupling hole. A resin bonding apparatus comprising a recess for forming a protruding portion.   In Claim 1 or 2, the said adapter is comprised as a 1st adapter, The nozzle part of the said exit member in which the molten resin produced | generated by the said resin melt injection apparatus is inject | poured is inserted in the said 1st adapter. The insertion hole is formed, and the molten resin is prevented from escaping. Further, the coupling hole drilled in the first member is closed on the back surface of the first adapter and the diameter is larger than the coupling hole diameter. A resin bonding apparatus comprising a concave portion that forms a bulging portion and bonding the first member and the second member.   3. The adapter according to claim 1, wherein the adapter includes a first adapter and a second adapter, the first adapter is formed with an injection port through which the molten resin is injected, and the first adapter and the second adapter are formed. A resin bonding apparatus characterized in that a continuous groove surrounding the periphery of the first member and the second member is formed on the inner surface of the adapter and communicated with the inlet. The heat insulating material is interposed between the nozzle part of the outlet member and the first adapter according to any one of claims 1, 2, 3, 4, 5, 6 and 7. Resin bonding equipment.

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