Injection molding machine convenient to overhaul

Abstract

The utility model discloses an injection molding machine convenient to overhaul, which comprises a machine body, and an injection device, a mold closing device and a hydraulic transmission device which are arranged on the machine body, and the mold closing device comprises a fixed seat fixed on the machine body, a movable seat sliding on the machine body, and injection molds fixedly arranged on the fixed seat and the movable seat respectively; a first through hole is formed in the middle of the fixing base, and a communicating device communicating the output end of the injection device with the input end of the injection mold is arranged in the first through hole. The communicating device comprises a pair of inserting grooves which are formed in the two sides of the fixing base correspondingly and communicate with each other to penetrate through the middle through hole, a pair of inserting plates movably inserted into the two inserting grooves correspondingly, a pair of half-circle pipe bodies connected to the ends, close to the first through hole, of the two inserting plates correspondingly, and a connecting assembly for connecting and combining the two half-circle pipe bodies. The output end of the injection device and the input end of the injection mold are inserted into the two ends of a complete pipe body formed by combining the two half-circle pipe bodies respectively. The utility model has the following advantage and effect: the maintenance is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and particularly relates to an injection molding machine which is convenient for maintenance. Background Art

[0002] An injection molding machine is composed of an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, a safety monitoring system, etc. The working principle is to inject the molten plastic (i.e., viscous flow state) that has been plasticized into a closed mold cavity by means of the thrust of a screw, and obtain the product through the process of curing and shaping.

[0003] The molding process of a screw injection molding machine is as follows: First, granular or powdered plastic is added into the barrel, and the plastic becomes molten through the rotation of the screw and the heating of the outer wall of the barrel. Then, the machine performs mold clamping and the injection seat moves forward to make the nozzle close to the gate of the mold. Next, pressure oil is introduced into the injection cylinder to make the screw push forward, so as to inject the molten material into the relatively cold closed mold at a very high pressure and a relatively fast speed. After a certain period of time and pressure holding (also known as pressure maintaining) and cooling, it is cured and shaped, and then the mold can be opened to take out the product. Among them, between the nozzle of the injection system and the gate of the mold, it is usually connected by a connecting cylinder fixedly passing through the mold mounting seat.

[0004] However, when actually maintaining the nozzle of the injection system, the gate of the mold and the connecting cylinder, since the three are closely connected and the mold mounting seat and the plunger system cannot be actively moved, in order to observe their internal conditions and replace relevant components, it is usually necessary to disassemble the mold and the connecting cylinder together from the mold mounting seat. This disassembly and maintenance process is not only complex and cumbersome, but also takes a lot of maintenance time, thus resulting in low overall maintenance efficiency of the injection molding machine. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an injection molding machine which is convenient for maintenance and has the effect of convenient and fast maintenance.

[0006] The above technical object of the present utility model is achieved through the following technical solutions: An injection molding machine convenient for maintenance, including a machine body, and an injection device, a mold clamping device, and a hydraulic transmission device installed on the machine body. The mold clamping device includes a fixed seat fixed on the machine body, a moving seat sliding on the machine body, and injection molds respectively fixedly installed on the fixed seat and the moving seat. A through hole one is opened in the middle of the fixed seat, and a connecting device for connecting the output end of the injection device and the input end of the injection mold is arranged in the through hole one. The connecting device includes a pair of slots respectively opened on both sides of the fixed seat and communicating and penetrating through the middle through hole, a pair of plug boards respectively movably inserted into the two slots, a pair of semi-circular pipe bodies respectively connected to one ends of the two plug boards close to the through hole one, and a connecting component for connecting and combining the two semi-circular pipe bodies. The output end of the injection device and the input end of the injection mold are respectively inserted into both ends of the complete pipe body formed by combining the two semi-circular pipe bodies.

[0007] A further setting of the present utility model is that: a jack is fixedly opened at one end of the plug board close to the through hole, a plug block is fixedly arranged on the outer side wall of the semi-circular pipe body and movably inserted into the jack, a plurality of springs are installed in the jack, and both ends of the spring respectively abut against the bottom of the jack and one end of the plug block away from the semi-circular pipe body.

[0008] A further setting of the present utility model is that: a long hole perpendicular to the jack is opened in the middle of the plug block, a through hole two perpendicular to and penetrating through the jack is opened on the plug board, a limit screw passing through the jack and the long hole is inserted into the through hole two, and a locking nut is threadedly connected to the front end of the limit screw extending out of the through hole two.

[0009] A further setting of the present utility model is that: the connecting component includes connecting plates fixedly connected to both ends of the semi-circular pipe body and flush with each other, a plurality of screws fixed on one connecting plate, a plurality of through holes three opened on the other connecting plate, a plurality of rotating shafts rotatably passing through the plug board, a threaded hole is opened at one end of the rotating shaft close to the connecting plate, the connecting plates of the two semi-circular pipe bodies are respectively in parallel contact, the screws and the through holes three on the two pairs of connecting plates are respectively cross-inserted, the rotating shafts on the two plug boards are parallel up and down, and the threaded holes of the rotating shafts on the two plug boards are respectively threadedly connected to the screws of the connecting plates on the two semi-circular pipe bodies.

[0010] A further setting of the present utility model is that: an internal hexagonal sleeve is fixedly arranged at one end of the rotating shaft away from the connecting plate.

[0011] A further setting of the present utility model is that: the number of the screws on the connecting plate, the through holes three, and the rotating shafts on the plug board is two.

[0012] A further setting of the present utility model is that: a waste discharge hole communicating the slot and the through hole one is opened at the bottom of the fixed seat.

[0013] A further setting of the present utility model is that a handle is fixedly arranged at one end of the plug board away from the through hole.

[0014] A further setting of the present utility model is that a pair of connecting grooves are opened at the splicing surface at both ends of one semi-circular pipe body, and a pair of connecting protrusions engaging with the connecting grooves are fixedly arranged at the splicing surface at both ends of the other semi-circular pipe body.

[0015] A further setting of the present utility model is that a sealing rubber strip is fixedly connected to one end of the connecting protrusion away from the semi-circular pipe body, and the sealing rubber strip and the connecting protrusion together engage with the connecting groove.

[0016] The beneficial effects of the present utility model are as follows: By adopting the above technical solution, when it is necessary to repair the injection molding machine, first use an electric hexagon wrench to respectively rotate the hexagon socket sleeves on the two plug boards, so that the rotating shafts connected to the hexagon socket sleeves rotate. Then, for the threaded holes at one end of the rotating shafts, under the rotation of the rotating shafts, they will separate from the screws on the connecting plates, and thus the fixation between the connecting plates on the two semi-circular pipe bodies is released. Finally, hold the handle and pull out the two plug boards from the slots respectively, and the two semi-circular pipe bodies can be removed from the fixed seat for repair without removing the injection mold on the fixed seat. At the same time, by using tools such as an endoscope, the nozzle at the output end of the plunger device and the sprue runner of the template at the input end of the clamping device can be directly repaired quickly through the slots, thereby definitely shortening the time for disassembling and assembling parts during repair and effectively improving the repair efficiency. Among them, the connection structure between the insertion holes of the plug board and the insertion blocks of the semi-circular pipe body can not only effectively cooperate with the threaded holes of the rotating shafts and the bolts of the connecting plates to achieve the effect of quickly locking and fixing the two semi-circular pipe bodies, but also the springs in the insertion holes can give a certain reaction force to the two semi-circular pipe bodies through the insertion blocks during the locking process, so that the combination between the two semi-circular pipe bodies is tighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is the three-dimensional structure schematic diagram of this embodiment;

[0019] Figure 2 is the schematic diagram of the positional relationship among the injection device, the fixed seat and the injection mold in this embodiment;

[0020] Figure 3 is the structural sectional view of the fixed seat and the injection mold in this embodiment;

[0021] Figure 4 Schematic diagram of the connection relationship between the semi-circular pipe body and the insertion plate in this embodiment;

[0022] Figure 5 is Figure 4 Enlarged view of part A of

[0023] In the figure, 1, machine body; 2, injection device; 3, mold clamping device; 31, fixed seat; 311, first through hole; 312, waste discharge hole; 32, moving seat; 33, injection mold; 4, hydraulic transmission device; 5, communication device; 51, slot; 52, insertion plate; 521, jack; 522, second through hole; 523, handle; 53, semi-circular pipe body; 531, insertion block; 532, long slot; 533, connection groove; 534, connection protrusion; 535, sealing rubber strip; 54, connection component; 541, connecting plate; 542, screw; 543, third through hole; 544, rotating shaft; 545, threaded hole; 546, internal hexagonal sleeve; 6, spring; 7, limit screw; 8, locking nut. Detailed implementation mode

[0024] Next, the technical solution of the present utility model will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: An injection molding machine convenient for maintenance, as Figures 1-4As shown in the figure, it includes a machine body 1, and an injection device 2, a mold clamping device 3, and a hydraulic transmission device 4 installed on the machine body 1. The mold clamping device 3 includes a fixed seat 31 fixed on the machine body 1, a moving seat 32 sliding on the machine body 1, and injection molds 33 respectively fixed on the fixed seat 31 and the moving seat 32. A through hole one 311 is opened in the middle of the fixed seat 31, and a connecting device 5 for connecting the output end of the injection device 2 and the input end of the injection mold 33 is arranged in the through hole one 311. The connecting device 5 includes a pair of slots 51 respectively opened on both sides of the fixed seat 31 and communicating and penetrating through the middle through hole, a pair of plug plates 52 respectively movably inserted into the two slots 51, a pair of semi-circular tube bodies 53 respectively connected to one ends of the two plug plates 52 close to the through hole one 311, and a connecting component 54 connecting and combining the two semi-circular tube bodies 53. The output end of the injection device 2 and the input end of the injection mold 33 are respectively inserted into the two ends of the complete tube body formed by combining the two semi-circular tube bodies 53. Among them, a waste discharge hole 312 communicating the slot 51 and the through hole one 311 is opened at the bottom of the fixed seat 31, which can catch and discharge the injection waste falling from the two semi-circular tube bodies 53 to ensure the cleanliness inside the slot 51; a handle 523 is fixedly arranged at the end of the plug plate 52 far from the through hole, which can facilitate the staff to draw the plug plate 52 in and out of the slot 51.

[0026] As Figure 4 shown, a jack 521 is fixedly opened at the end of the plug plate 52 close to the through hole. An insertion block 531 that is movably inserted into the jack 521 is fixedly arranged on the outer side wall of the semi-circular tube body 53. A plurality of springs 6 are installed in the jack 521, and the two ends of the spring 6 respectively abut against the bottom of the jack 521 and the end of the insertion block 531 far from the semi-circular tube body 53. Among them, a long strip hole 532 perpendicular to the jack 521 is opened in the middle of the insertion block 531. A through hole two 522 perpendicular to and penetrating through the jack 521 is opened on the plug plate 52. A limit screw 7 passing through the jack 521 and the long strip hole 532 is inserted into the through hole two 522, and a locking nut 8 is threadedly connected to the front end of the limit screw 7 protruding from the through hole two 522. By adopting the above structures such as the long strip hole 532, the through hole two 522 and the limit screw 7, the movable connection between the insertion block 531 and the jack 521 can be stably maintained, so as to prevent the semi-circular tube body 53 and the insertion block 531 from falling out of the jack 521 due to inertia when the plug plate 52 is pulled out or inserted into the slot 51.

[0027] As Figure 3 、 Figure 4As shown in the figure, the connecting component 54 includes connecting plates 541 fixedly connected to both ends of the semi-circular pipe body 53 and flush with each other vertically, two screws 542 fixed on one connecting plate 541, two through holes three 543 opened on the other connecting plate 541, two rotating shafts 544 rotatably passing through the insertion plates 52, a threaded hole 545 is opened at one end of the rotating shaft 544 close to the connecting plate 541. The connecting plates 541 of the two semi-circular pipe bodies 53 are respectively in parallel contact, and the screws 542 and the through holes three 543 on the two pairs of connecting plates 541 are respectively inserted crosswise. The rotating shafts 544 on the two insertion plates 52 are parallel to each other vertically, and the threaded holes 545 of the rotating shafts 544 on the two insertion plates 52 are respectively threadedly connected to the screws 542 of the connecting plates 541 on the two semi-circular pipe bodies 53. Among them, an internal hexagonal sleeve 546 is fixedly arranged at one end of the rotating shaft 544 away from the connecting plate 541, which can facilitate the staff to twist and rotate the rotating shaft 544.

[0028] As Figure 4 , Figure 5 As shown in the figure, a pair of connecting grooves 533 are opened at the splicing surface of both ends of a semi-circular pipe body 53, and a pair of connecting protrusions 534 engaging with the connecting grooves 533 are fixedly arranged at the splicing surface of both ends of the other semi-circular pipe body 53; a sealing rubber strip 535 is fixedly connected to one end of the connecting protrusion 534 away from the semi-circular pipe body 53, and the sealing rubber strip 535 and the connecting protrusion 534 together engage with the connecting groove 533. By adopting the above-mentioned connecting groove and connecting protrusion 534, not only can the combination stability of the two semi-circular pipe bodies 53 be further ensured, but also in cooperation with the sealing rubber strip 535, the sealing performance of the two semi-circular pipe bodies 53 combined into a complete pipe body can be effectively improved to ensure the stable passage of the injection molding raw material.

[0029] The working principle of this embodiment:

[0030] When the injection molding machine needs to be repaired, first use an electric hex wrench to rotate the hexagon socket 546 on the two plug plates 52 respectively, so that the rotating shaft 544 connected to the hexagon socket 546 rotates. Then, the threaded hole 545 at one end of the rotating shaft 544 will separate from the screw 542 on the connecting plate 541 under the rotation of the rotating shaft 544, and thus the fixation between the connecting plates 541 on the two semi-circular pipe bodies 53 will be released. Finally, hold the handle 523 and pull out the two plug plates 52 from the slots 51 respectively, and the two semi-circular pipe bodies 53 can be removed from the fixing seat 31 for repair without removing the injection mold 33 on the fixing seat 31. At the same time, by using tools such as an endoscope, it is possible to directly penetrate the slot 51 to quickly repair the nozzle at the output end of the plunger device and the template runner at the input end of the mold clamping device 3, thereby definitely shortening the time for disassembling and assembling parts during repair and effectively improving the repair efficiency. Among them, the connection structure between the jack 521 of the plug plate 52 and the insertion block 531 of the semi-circular pipe body 53 can not only effectively cooperate with the threaded hole 545 of the rotating shaft 544 and the bolt of the connecting plate 541 to achieve the effect of quickly locking and fixing the two semi-circular pipe bodies 53, but also the spring 6 in the jack 521 can give a certain reaction force to the two semi-circular pipe bodies 53 through the insertion block 531 during the locking process, so that the two semi-circular pipe bodies 53 are combined more tightly.

Claims

1. An injection molding machine convenient for maintenance, comprising a machine body (1), and an injection device (2), a mold clamping device (3), and a hydraulic transmission device (4) installed on the machine body (1). The mold clamping device (3) includes a fixed seat (31) fixed to the machine body (1), a moving seat (32) sliding on the machine body (1), and an injection mold (33) respectively fixedly installed on the fixed seat (31) and the moving seat (32), characterized in that, A through hole one (311) is provided in the middle of the fixed seat (31), and a connecting device (5) for connecting the output end of the injection device (2) and the input end of the injection mold (33) is arranged in the through hole one (311). The connecting device (5) includes a pair of slots (51) respectively opened on both sides of the fixed seat (31) and communicating and penetrating through the middle through hole, a pair of plug plates (52) respectively movably inserted into the two slots (51), a pair of semi-circular pipe bodies (53) respectively connected to one ends of the two plug plates (52) close to the through hole one (311), and a connecting component (54) for connecting and combining the two semi-circular pipe bodies (53). The output end of the injection device (2) and the input end of the injection mold (33) are respectively inserted into the two ends of the complete pipe body formed by combining the two semi-circular pipe bodies (53).

2. The injection molding machine according to claim 1, which is convenient for maintenance, is characterized in that: A jack (521) is fixedly opened at one end of the plug plate (52) close to the through hole. A plug block (531) which is movably inserted into the jack (521) is fixedly arranged on the outer side wall of the semi-circular pipe body (53). A plurality of springs (6) are installed in the jack (521), and the two ends of the springs (6) respectively abut against the bottom of the jack (521) and one end of the plug block (531) away from the semi-circular pipe body (53).

3. The injection molding machine according to claim 2, characterized in that: A long hole (532) perpendicular to the jack (521) is provided in the middle of the plug block (531). A through hole two (522) which vertically penetrates through the jack (521) is provided on the plug plate (52). A limit screw (7) which passes through the jack (521) and the long hole (532) is inserted into the through hole two (522), and a locking nut (8) is threadedly connected to the front end of the limit screw (7) extending out of the through hole two (522).

4. The injection molding machine convenient for maintenance according to claim 1, characterized in that: The connecting component (54) includes connecting plates (541) fixedly connected to both ends of the semi-circular pipe body (53) and flush with each other, a plurality of screws (542) fixed on one connecting plate (541), a plurality of through holes three (543) opened on the other connecting plate (541), a plurality of rotating shafts (544) rotatably passing through the plug plate (52). A threaded hole (545) is provided at one end of the rotating shaft (544) close to the connecting plate (541). The connecting plates (541) of the two semi-circular pipe bodies (53) are respectively in parallel contact, and the screws (542) and the through holes three (543) on the two pairs of connecting plates (541) are respectively inserted in a cross manner. The rotating shafts (544) on the two plug plates (52) are parallel up and down, and the threaded holes (545) of the rotating shafts (544) on the two plug plates (52) are respectively threadedly connected to the screws (542) of the connecting plates (541) on the two semi-circular pipe bodies (53).

5. The injection molding machine convenient for maintenance according to claim 4, wherein: An internal hexagonal sleeve (546) is fixedly arranged at one end of the rotating shaft (544) away from the connecting plate (541).

6. The injection molding machine according to claim 4, wherein: The number of the screws (542) on the connecting plate (541), the through holes three (543), and the rotating shafts (544) on the plug plate (52) is two.

7. The injection molding machine convenient for maintenance according to claim 5, wherein: A waste discharge hole (312) communicating the slot (51) and the through hole one (311) is provided at the bottom of the fixed seat (31).

8. The injection molding machine convenient for maintenance according to claim 1, characterized in that: A handle (523) is fixedly arranged at one end of the plug plate (52) away from the through hole.

9. The injection molding machine convenient for maintenance according to claim 1, wherein: A pair of connecting grooves (533) are formed at the splicing surfaces at both ends of the half-circle pipe body (53), and a pair of connecting protrusions (534) engaging with the connecting grooves (533) are fixedly arranged at the splicing surfaces at both ends of the other half-circle pipe body (53).

10. An injection molding machine convenient for maintenance according to claim 9, characterized in that: A sealing rubber strip (535) is fixedly connected to the end of the connecting protrusion (534) far away from the half-circle pipe body (53), and the sealing rubber strip (535) and the connecting protrusion (534) together engage with the connecting groove (533).

Images