Injection molding machine nozzle blockage detection device for plastic pipe fitting production

Abstract

The invention discloses an injection molding machine nozzle blockage detection device for plastic pipe fitting production, and relates to the technical field of injection molding machines. Comprising a base, a connecting shaft is arranged on the surface of the base, a bottom plate is fixedly connected to the surface of the connecting shaft, an anti-falling cap is arranged on the inner side of the bottom plate, and an annular rail is arranged on the outer side of the bottom plate. Through the arrangement of the connecting shaft accessory structure, the linkage bottom plate and the anti-uncapping accessory structure, after the nozzle of the injection molding machine is blocked, the connecting shaft accessory structure, the linkage bottom plate and the anti-uncapping accessory structure can stretch into and be rotationally inserted into the nozzle, scraping cleaning in a larger range is provided, it is ensured that solidified materials are effectively removed, and the cleaning efficiency is improved; the device can accelerate discharge of processed blockages in the using process, avoids secondary blockage and influences on the efficiency of blockage clearing operation, or cleans the surface of the scraping frame when blockage clearing operation is not carried out, ensures that the surface of the scraping frame is always kept in an optimal state, and further reduces the maintenance frequency.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, and in particular to a nozzle blockage detection device for injection molding machines used in the production of plastic pipe fittings. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. However, the existing injection molding machine nozzles are blocked during use. In order not to affect the normal production, corresponding detection devices are often used.

[0003] The invention patent with announcement number CN111941727B discloses a nozzle blockage detection device for an injection molding machine used in the production of plastic pipe fittings. The device facilitates the transportation of raw materials in a mixing box by rotating a motor, a feeding tube, a spring telescopic rod, a threaded circular plate, a threaded sleeve, a pushing circular plate, a feeding tube and a nozzle. The mixing box, support legs, a feeding tube, a fixed plate, a dual-axis motor and a stirring rod body facilitate the stirring of the raw materials. The monitoring box, the socket, the spring, the bearing plate, the plug, the return trough and the return pipe realize the reflux of the raw materials after the nozzle is blocked, which is convenient for the subsequent cleaning of the nozzle by the needle. The electric telescopic rod, the air pump, the trash can, the electric displacement telescopic rod, the pin and the exhaust trough realize the cleaning of the blocked nozzle. The placement plate and the gravity telescopic table facilitate the judgment of whether the nozzle is blocked by the change of the gravity of the mold for subsequent corresponding processing.

[0004] The above-mentioned prior art has certain shortcomings in actual use. Although it can clear the blocked injection molding machine nozzle to a certain extent, on the one hand, during the clearing, the fallen materials cannot be discharged in time and may cause secondary blockage, thereby affecting the clearing efficiency. On the other hand, the drill bit itself will also be adhered with materials, and manual cleaning is required before the next clearing operation. Summary of the invention

[0005] The purpose of the present invention is to provide a nozzle blockage detection device for an injection molding machine used in the production of plastic pipe fittings to solve the above technical problems.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A nozzle blockage detection device for an injection molding machine used in the production of plastic pipe fittings, comprising a base, a coupling shaft is arranged on the surface of the base, a bottom plate is fixedly connected to the surface of the coupling shaft, an anti-drop cap is arranged on the inner side of the bottom plate, and an annular rail is arranged on the outer side of the bottom plate;

[0008] The surface of the annular rail is symmetrically fixedly connected with a docking sleeve, the surface of the docking sleeve is sleeved and connected with an assembling sleeve, the inner side of the assembling sleeve is provided with a guide groove, the outer side of the assembling sleeve is fixedly connected with a scraper, the inside of the annular rail is embedded with an inner ring, one annular surface of the inner ring is symmetrically fixedly connected with a convex node, and the convex node and the guide groove are embedded and connected.

[0009] As a further solution of the present invention: a mixing barrel is fixedly installed on the upper end of the base near a short side, a stirrer is fixedly installed on the top surface of the mixing barrel, a heater is fixedly installed on the side surface of the mixing barrel, a pusher is fixedly installed on the lower end of the mixing barrel, a nozzle is fixedly connected to the output end of the pusher, a heat preservation rack is fixedly installed on the surface of the pusher, a heat conduction pipe is fixedly connected to the surface of the heat preservation rack, a bracket is fixedly installed on the upper end of the base near the other short side, a piece counter is fixedly installed inside the bracket, a mold rack is arranged above the piece counter inside the bracket, a first cylinder is fixedly connected to the surface of one end of the bracket, a second cylinder is arranged at the output end of the first cylinder, and the output end of the second cylinder is fixedly connected to the connecting shaft.

[0010] As a further solution of the present invention: a first motor is fixedly installed inside the connecting shaft near the edge of one end, a docking rod is fixedly connected to the output end of the first motor, a ring plate is fixedly connected to the surface of the docking rod, a first latch tooth is fixedly connected to one end surface of the ring plate, an inner sleeve is fixedly connected to one end surface of the connecting shaft, a linkage gear set is symmetrically fixedly connected to the side surface of the inner sleeve, an anti-slip ring is fixedly connected to one end surface of the inner sleeve, the ring plate is sleeved and connected to the anti-slip ring, an outer sleeve is sleeved and connected to the side surface of the inner sleeve, an inner surface of the outer sleeve is fixedly connected to an inner gear ring near the edge of one end, the inner gear ring is meshed with the linkage gear set, the first latch tooth is meshed with the linkage gear set, a fixing ring is fixedly connected to one end surface of the outer sleeve, and the fixing ring is fixedly connected to the base plate.

[0011] As a further solution of the present invention, a support rod is fixedly installed on one end surface of the bottom plate, one end surface of the bottom plate is located at the inner side of the support rod and is fixedly connected to the support plate, one end surface of the support plate is fixedly installed with a second motor, and the output end of the second motor is fixedly connected to the first gear, one end surface of the support plate is fixedly connected to the top plate, one end surface of the support plate is provided with an anti-slip ring, the surface of the anti-slip ring is rotatably connected to a connecting plate, one end surface of the connecting plate is fixedly connected with a second tooth near the side edge, the surface of the connecting plate is provided with an arc groove near the middle, one end surface of the top plate is located in the middle and a third motor is fixedly installed, the output end of the third motor is fixedly connected to a guide screw rod, the other end surface of the top plate is fixedly installed with a sliding rod near the middle, the surfaces of the guide screw rod and the sliding rod are sleeved with a blocking plate, and the other end surface of the top plate is fixedly connected to a docking frame, the surface of the docking frame is provided with a limiting groove, and the surface of the limiting groove is provided with a through groove.

[0012] As a further solution of the present invention: the surface of the anti-drop cap is fixedly connected with an embedding rod, the embedding rod is embedded and connected with the arc groove, the surface of one end of the embedding rod is fixedly connected with an embedding strip, the side surface of the embedding strip is fixedly connected with a sleeve at one end edge, one end of the sleeve is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a connecting piece, one end surface of the connecting piece is fixedly connected with a pin at one end edge, the surface of the sleeve is rotatably connected with a connecting block, the surface of the connecting block is fixedly connected with a long shaft, the surface of the long shaft is provided with an alignment groove, the pin is embedded and connected with the alignment groove, and one end surface of the long shaft is fixedly connected with a scraper.

[0013] As a further solution of the present invention: the outer surface of the annular rail is symmetrically provided with horizontal grooves, one end surface of the annular rail is provided with vertical grooves, the other end surface of the annular rail is fixedly connected to a support plate, one end surface of the support plate is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a second gear.

[0014] As a further solution of the present invention: a groove is provided on the side surface of the inner ring, the second gear is embedded and connected to the groove, a folding rod is fixedly connected to the inner surface of the annular rail, and a screw sleeve is fixedly connected to the surface of the folding rod.

[0015] Beneficial effects of the present invention:

[0016] Through the setting of the coupling accessory structure, its linkage bottom plate and anti-drop cap accessory structure can extend into and rotate into the interior of the injection molding machine after the nozzle is blocked, providing a wider range of scraping and cleaning, ensuring that the solidified material is effectively removed and improving the cleaning efficiency. Through the setting of the annular rail accessory structure, it can accelerate the discharge of the treated blockage during use to avoid secondary blockage that affects the efficiency of the clearing operation, or clean the surface of the scraper when no clearing operation is performed, ensuring that the scraper surface is always kept in the best condition, further reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the blockage clearing device of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection structure of the coupling fitting of the present invention;

[0021] Figure 4 is a first side view of the bottom plate accessory structure of the present invention;

[0022] Figure 5 This is the second side view of the bottom plate accessory structure of the present invention

[0023] Figure 6 This is a schematic diagram of the connection structure of the anti-drop cap accessory of the present invention.

[0024] Figure 7 It is a schematic diagram of the connection structure of the ring rail accessories of the present invention;

[0025] Figure 8 It is a schematic diagram of the disassembly of the ring rail accessory structure of the present invention.

[0026] In the figure: 1, base; 2, mixing barrel; 3, stirrer; 4, heater; 5, pusher; 6, nozzle; 7, insulation rack; 8, heat pipe; 9, bracket; 10, piece counter; 11, mold rack; 12, first cylinder; 13, second cylinder; 14, connecting shaft; 15, first motor; 16, docking rod; 17, ring plate; 18, first clamping tooth; 19, inner sleeve; 20, linkage gear set; 21, anti-slip ring; 22, outer sleeve; 23, inner gear ring; 24, fixed ring; 25, bottom plate; 26, support rod; 27, support plate; 28, second motor; 29, first gear; 30, top plate; 31, connecting plate; 32, second clamping tooth; 33. arc groove; 34. third motor; 35. guide screw; 36. slide rod; 37. blocking plate; 38. docking frame; 39. limit groove; 40. through groove; 41. anti-drop cap; 42. embedded rod; 43. embedded strip; 44. sleeve; 45. first motor; 46. connecting piece; 47. connecting block; 48. long shaft; 49. alignment groove; 50. scraper; 51. ring rail; 52. docking sleeve; 53. horizontal slot; 54. vertical slot; 55. assembly sleeve; 56. guide groove; 57. scraper; 58. second motor; 59. second gear; 60. embedded ring; 61. missing groove; 62. convex section; 63. folding rod; 64. screw sleeve. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 8 As shown, the present invention is a nozzle blockage detection device for an injection molding machine for producing plastic pipe fittings, comprising a base 1, a connecting shaft 14 is arranged on the surface of the base 1, a bottom plate 25 is fixedly connected to the surface of the connecting shaft 14, an anti-drop cap 41 is arranged on the inner side of the bottom plate 25, and an annular rail 51 is arranged on the outer side of the bottom plate 25;

[0029] The surface of the annular rail 51 is symmetrically fixedly connected with a docking sleeve 52, the surface of the docking sleeve 52 is sleeved with an assembly sleeve 55, the inner side of the assembly sleeve 55 is provided with a guide groove 56, the outer side of the assembly sleeve 55 is fixedly connected with a scraper 57, the inside of the annular rail 51 is embedded with an inner ring 60, one annular surface of the inner ring 60 is symmetrically fixedly connected with a convex section 62, and the convex section 62 is embedded and connected with the guide groove 56;

[0030] A mixing barrel 2 is fixedly installed at the upper end of the base 1 near a short side, a stirrer 3 is fixedly installed on the top surface of the mixing barrel 2, a heater 4 is fixedly installed on the side surface of the mixing barrel 2, a pusher 5 is fixedly installed at the lower end of the mixing barrel 2, a nozzle 6 is fixedly connected to the output end of the pusher 5, a heat preservation rack 7 is fixedly installed on the surface of the pusher 5, a heat conduction pipe 8 is fixedly connected to the surface of the heat preservation rack 7, a bracket 9 is fixedly installed at the upper end of the base 1 near another short side, a piece counter 10 is fixedly installed inside the bracket 9, a mold rack 11 is arranged above the piece counter 10 inside the bracket 9, a first cylinder 12 is fixedly connected to the output end of the first cylinder 12 A second cylinder 13 is provided at the end, and the output end of the second cylinder 13 is fixedly connected to the connecting shaft 14. In the normal use process, after the injection molding material is injected into the mixing barrel 2, the user can use the stirrer 3 and the heater 4 to make it melt, and then inject it into the pusher 5 before cooling and solidification, and finally inject it through the nozzle 6, and then inject it into the surface of the mold frame 11 to wait for cooling and molding. During this process, the heat preservation frame 7 will further maintain the temperature inside the pusher 5 to avoid the injection molding material from solidifying as much as possible. However, there will still be certain situations that cause the injection molding material to solidify and block the nozzle 6. After the piece counter 10 detects that the processing efficiency has slowed down, the blockage removal operation will be carried out through computer control;

[0031] A first motor 15 is fixedly installed at the inner edge of one end of the coupling 14, and a docking rod 16 is fixedly connected to the output end of the first motor 15. A ring plate 17 is fixedly connected to the surface of the docking rod 16, and a first latching tooth 18 is fixedly connected to one end surface of the ring plate 17. An inner sleeve 19 is fixedly connected to one end surface of the coupling 14, and a linkage gear set 20 is symmetrically fixedly connected to the side surface of the inner sleeve 19. An anti-slip ring 21 is fixedly connected to one end surface of the inner sleeve 19, and the ring plate 17 is sleeved and connected to the anti-slip ring 21. The side surface of the inner sleeve 19 is sleeved and connected to an outer sleeve 22. The inner side surface of the outer sleeve 22 is fixedly connected to an inner gear ring 23 at one end edge, and the inner gear ring 23 is meshed and connected with the linkage gear set 20. The first latching tooth 18 is meshed and connected with the linkage gear set 20, and a fixing ring 24 is fixedly connected to one end surface of the outer sleeve 22, and the fixing ring 24 is fixedly connected to the bottom plate 25. Through the operation of the first cylinder 12 and the second cylinder 13, the connecting shaft 14 and a series of accessories will begin to slowly extend into the blocked nozzle 6, and then the blockage clearing operation will begin. In this process, by starting the first motor 15, the ring plate 17 on its output end is used to drive the first latch 18 to rotate, and then through the relay drive of the linkage gear set 20, the inner gear ring 23 meshed with it will start to drive the outer sleeve 22 to rotate, and finally the entire blockage clearing structure is rotated through the fixing ring 24, and the blockage clearing efficiency is mainly improved through the rotation of the scraper 50;

[0032] A support rod 26 is fixedly installed on one end surface of the bottom plate 25, and a support plate 27 is fixedly connected to one end surface of the bottom plate 25 located inside the support rod 26. A second motor 28 is fixedly installed on one end surface of the support plate 27, and a first gear 29 is fixedly connected to the output end of the second motor 28. A top plate 30 is fixedly connected to one end surface of the support rod 26, and an anti-slip ring is provided on one end surface of the top plate 30. A connecting plate 31 is rotatably connected to the surface of the anti-slip ring, and a second latching tooth 32 is fixedly connected to one end surface of the connecting plate 31 close to the side edge. An arc groove 33 is provided near the middle of the surface of the connecting plate 31, a third motor 34 is fixedly installed at the middle of one end surface of the top plate 30, a guide screw 35 is fixedly connected to the output end of the third motor 34, a slide bar 36 is fixedly installed near the middle of the other end surface of the top plate 30, a blocking plate 37 is sleeved and connected to the surfaces of the guide screw 35 and the slide bar 36, a docking frame 38 is fixedly connected to the other end surface of the top plate 30, a limiting groove 39 is provided on the surface of the docking frame 38, and a through groove 40 is provided on the surface of the limiting groove 39;

[0033] An embedding rod 42 is fixedly connected to the surface of the anti-drop cap 41, and the embedding rod 42 is embedded and connected with the arc groove 33. A embedding strip 43 is fixedly connected to the surface of one end of the embedding rod 42. A sleeve 44 is fixedly connected to the side surface of the embedding strip 43 at one end edge. A first motor 45 is fixedly connected to one end of the sleeve 44. A connecting piece 46 is fixedly connected to the output end of the first motor 45. A pin is fixedly connected to the surface of the connecting piece 46 at one end edge. A connecting block 47 is rotatably connected to the surface of the connecting block 47. A long shaft 48 is fixedly connected to the surface of the connecting block 47. An alignment groove 49 is provided on the surface of the long shaft 48. The pin is embedded and connected with the alignment groove 49. A scraper 50 is fixedly connected to the surface of one end of the long shaft 48. The five groups of scrapers 50 are initially gathered together in the middle position, and their tips will be close to each other to form a drill bit shape, so as to facilitate drilling into the blockage first. The second motor 28 is started to rotate the second tooth 32 by the first gear 29 on the output end thereof, and then the entire connecting plate 31 starts to rotate slowly, and cooperates with the arc groove 33 to make the embedded rod 42 push outward in a straight line under the interference of the embedded strip 43 and the limiting groove 39, so as to expand the clearing range of the scraper 50 as much as possible. For the conical structure of the nozzle 6, when the embedded rod 42 moves the maximum distance, or interferes with the surface of the nozzle 6, the first motor 45 can be controlled to start, so as to drive the connecting piece 46 to turn over, thereby changing the position of the pin, and the long shaft 48 connected to the pin through the alignment groove 49 will also be dragged and moved, thereby driving the scraper 50 to turn outward slowly, so as to be as close to the inner wall of the nozzle 6 as possible, so as to achieve the best cleaning effect;

[0034] The outer surface of the annular rail 51 is symmetrically provided with transverse grooves 53, one end surface of the annular rail 51 is provided with a longitudinal groove 54, the other end surface of the annular rail 51 is fixedly connected to a support sheet, one end surface of the support sheet is fixedly connected to a second motor 58, and the output end of the second motor 58 is fixedly connected to a second gear 59;

[0035] A notch 61 is provided on the side surface of the inner ring 60, and the second gear 59 is embedded and connected to the notch 61. A folding rod 63 is fixedly connected to the inner surface of the annular rail 51, and a screw sleeve 64 is fixedly connected to the surface of the folding rod 63. Whether in the clearing operation or the routine maintenance process, the third motor 34 can be started to rotate the guide screw 35, and cooperate with the slide rod 36 to make the screw sleeve 64 move steadily, thereby driving the entire annular rail 51 to move and make it stay at the desired position, and then control the second motor 58 to operate. Under the linkage action of the second gear 59 and the notch 61, the body of the inner ring 60 will start to rotate, and the convex section 62 on its surface will rotate together. In this process, whenever it passes through the docking sleeve 52, in cooperation with the guide groove 56, the corresponding assembly sleeve 55 will be driven to rotate, and then the scraper 57 will also rotate accordingly, so as to remove the blocked material and the material attached to the surface of the scraper frame 50.

[0036] Working principle of the present invention: In normal use process, after the injection molding material is injected into the mixing barrel 2, the user can use the stirrer 3 and the heater 4 to melt it, and then inject it into the pusher 5 before cooling and solidifying, and finally eject it through the nozzle 6, and then inject it into the surface of the mold frame 11 to wait for cooling and forming. During this process, the heat preservation frame 7 will further maintain the temperature inside the pusher 5 to avoid the injection molding material from solidifying as much as possible. However, there will still be certain situations that cause the injection molding material to solidify and block the nozzle 6. After the piece counter 10 detects that the processing efficiency has slowed down, the blockage will be cleared through computer control. Through the operation of the first cylinder 12 and the second cylinder 13, the connecting shaft 14 and a series of matching The first motor 15 is started, and the ring plate 17 on the output end is used to drive the first latch tooth 18 to rotate. Then, the inner gear ring 23 meshing with the first latch tooth 18 will start to drive the outer sleeve 22 to rotate through the relay of the linkage gear set 20, and finally the whole clearing structure will be rotated through the fixing ring 24. The clearing efficiency is mainly improved by the rotation of the scraper 50. The five groups of scrapers 50 are gathered together in the middle position at the beginning, and their tips will be close to each other to form a drill bit, so as to facilitate drilling into the blocked material first. When the depth is appropriate, the second motor 28 can be started at this time, and the first The gear 29 drives the second latching tooth 32 to rotate, and then the entire connecting plate 31 will start to rotate slowly, and cooperate with the arc groove 33 to make the embedded rod 42 push outward in a straight line under the interference of the embedded strip 43 and the limiting groove 39, so as to expand the clearing range of the scraper 50 as much as possible. For the conical structure of the nozzle 6, when the embedded rod 42 moves the maximum distance, or interferes with the surface of the nozzle 6, the first motor 45 can be controlled to start, so that it drives the connecting piece 46 to flip, thereby changing the position of the pin, and the long shaft 48 connected to the pin through the alignment groove 49 will also be dragged and moved, thereby driving the scraper 50 to slowly flip outward to get as close to the inner wall of the nozzle 6 as possible, so as to achieve the best cleaning. The third motor 34 can be started to rotate the guide screw 35 and the slide rod 36 can be used to move the screw sleeve 64 steadily, thereby driving the entire annular rail 51 to move and stop it at the desired position. Then the second motor 58 is controlled to operate. Under the linkage action of the second gear 59 and the notch 61, the body of the inner ring 60 will start to rotate, and the convex sections 62 on its surface will rotate together. During this process, whenever it passes through the docking sleeve 52, in conjunction with the guide groove 56, the corresponding assembly sleeve 55 will be driven to rotate, and then the scraper 57 will also rotate accordingly, so as to remove the blocked materials and the materials attached to the surface of the scraper frame 50.

[0037] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A nozzle blockage detection device for an injection molding machine for producing plastic pipe fittings, comprising a base (1), characterized in that: The surface of the base (1) is provided with a connecting shaft (14), the surface of the connecting shaft (14) is fixedly connected with a bottom plate (25), the inner side of the bottom plate (25) is provided with an anti-drop cap (41), and the outer side of the bottom plate (25) is provided with an annular rail (51); The surface of the annular rail (51) is symmetrically fixedly connected with a docking sleeve (52), the surface of the docking sleeve (52) is sleeved and connected with an assembling sleeve (55), the inner side of the assembling sleeve (55) is provided with a guide groove (56), the outer side of the assembling sleeve (55) is fixedly connected with a scraper (57), the inside of the annular rail (51) is embedded with an inner ring (60), one annular surface of the inner ring (60) is symmetrically fixedly connected with a convex node (62), and the convex node (62) and the guide groove (56) are embedded and connected.

2. The device for detecting nozzle blockage of an injection molding machine for producing plastic pipe fittings according to claim 1, characterized in that: A mixing barrel (2) is fixedly mounted on the upper end of the base (1) near a short side edge, a stirrer (3) is fixedly mounted on the top surface of the mixing barrel (2), a heater (4) is fixedly mounted on the side surface of the mixing barrel (2), a pusher (5) is fixedly mounted on the lower end of the mixing barrel (2), a nozzle (6) is fixedly connected to the output end of the pusher (5), a heat preservation rack (7) is fixedly mounted on the surface of the pusher (5), and a heat conduction pipe (7) is fixedly connected to the surface of the heat preservation rack (7). (8), a bracket (9) is fixedly installed at the upper end of the base (1) near the other short side, a piece counter (10) is fixedly installed inside the bracket (9), a mold frame (11) is arranged inside the bracket (9) above the piece counter (10), a first cylinder (12) is fixedly connected to the surface of one end of the bracket (9), a second cylinder (13) is arranged at the output end of the first cylinder (12), and the output end of the second cylinder (13) is fixedly connected to the connecting shaft (14).

3. The device for detecting nozzle blockage of an injection molding machine for producing plastic pipe fittings according to claim 1, characterized in that: A first motor (15) is fixedly installed at one end edge of the inner part of the connecting shaft (14); a docking rod (16) is fixedly connected to the output end of the first motor (15); a ring plate (17) is fixedly connected to the surface of the docking rod (16); a first latching tooth (18) is fixedly connected to one end surface of the ring plate (17); an inner sleeve (19) is fixedly connected to one end surface of the connecting shaft (14); a linkage gear set (20) is symmetrically fixedly connected to the side surface of the inner sleeve (19); and a first gear (20) is fixedly connected to one end surface of the inner sleeve (19). The anti-slip ring (21) is sleeved and connected with the ring plate (17), the side surface of the inner sleeve (19) is sleeved and connected with an outer sleeve (22), the inner surface of the outer sleeve (22) is fixedly connected with an inner gear ring (23) at one end edge, the inner gear ring (23) is meshed and connected with the linkage gear set (20), the first latching tooth (18) is meshed and connected with the linkage gear set (20), one end surface of the outer sleeve (22) is fixedly connected with a fixing ring (24), and the fixing ring (24) is fixedly connected with a bottom plate (25).

4. The device for detecting nozzle blockage of an injection molding machine for producing plastic pipe fittings according to claim 1, characterized in that: A support rod (26) is fixedly mounted on one end surface of the bottom plate (25); a support plate (27) is fixedly connected to one end surface of the bottom plate (25) on the inner side of the support rod (26); a second motor (28) is fixedly mounted on one end surface of the support plate (27); an output end of the second motor (28) is fixedly connected to a first gear (29); a top plate (30) is fixedly connected to one end surface of the support rod (26); an anti-slip ring is provided on one end surface of the top plate (30); a connecting plate (31) is rotatably connected to the surface of the anti-slip ring; a second latching tooth (32) is fixedly connected to one end surface of the connecting plate (31) close to the side edge; An arc groove (33) is provided near the middle of the surface of the connecting plate (31); a third motor (34) is fixedly installed at the middle of one end surface of the top plate (30); a guide screw (35) is fixedly connected to the output end of the third motor (34); a slide bar (36) is fixedly installed near the middle of the other end surface of the top plate (30); a blocking plate (37) is sleeved and connected to the surfaces of the guide screw (35) and the slide bar (36); a docking frame (38) is fixedly connected to the other end surface of the top plate (30); a limiting groove (39) is provided on the surface of the docking frame (38); and a through groove (40) is provided on the surface of the limiting groove (39).

5. The device for detecting nozzle blockage of an injection molding machine for producing plastic pipe fittings according to claim 4, characterized in that: The surface of the anti-drop cap (41) is fixedly connected with an embedding rod (42), and the embedding rod (42) is embedded and connected with the arc groove (33). One end surface of the embedding rod (42) is fixedly connected with a embedding strip (43), and the side surface of the embedding strip (43) is fixedly connected with a sleeve (44) near one end edge. One end of the sleeve (44) is fixedly connected with a first motor (45), and the output end of the first motor (45) is fixedly connected with a connecting piece (46), and one end surface of the connecting piece (46) is fixedly connected with a plug pin near one end edge. The surface of the sleeve (44) is rotatably connected with a connecting block (47), and the surface of the connecting block (47) is fixedly connected with a long shaft (48), and the surface of the long shaft (48) is provided with an alignment groove (49), and the plug pin is embedded and connected with the alignment groove (49), and one end surface of the long shaft (48) is fixedly connected with a scraper (50).

6. The device for detecting nozzle blockage of an injection molding machine for producing plastic pipe fittings according to claim 1, characterized in that: The outer surface of the annular rail (51) is symmetrically provided with transverse grooves (53), one end surface of the annular rail (51) is provided with a longitudinal groove (54), the other end surface of the annular rail (51) is fixedly connected to a support plate, one end surface of the support plate is fixedly connected to a second motor (58), and the output end of the second motor (58) is fixedly connected to a second gear (59).

7. The device for detecting nozzle blockage of an injection molding machine for producing plastic pipe fittings according to claim 6, characterized in that: The side surface of the inner ring (60) is provided with a notch (61), the second gear (59) is embedded and connected to the notch (61), the inner surface of the annular rail (51) is fixedly connected to a folding rod (63), and the surface of the folding rod (63) is fixedly connected to a screw sleeve (64).

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