PVC-U drainage pipe fitting mold forming mechanism
By designing a mold forming mechanism of PVC-U drainage pipe fittings including sealing rings and elastic connectors, the problem of reduced sealing at the connection between the core and the mold is solved, and the effect of maintaining tight sealing after long-term use is achieved, ensuring the quality of the pipe fittings.
Patent Information
- Application Number
- CN202421481875.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-26
AI Technical Summary
After long-term use of existing PVC-U drainage pipe fitting molds, the sealing properties at the connection between the core and the mold are easily affected, affecting the quality of the molded pipe fittings.
A forming mechanism including a mold body, an upper mold, a lower mold, a cavity, a casting port, a through hole, a sealing groove, a core, an elastic connection, a sealing ring and a sealing ring is designed. Through the cooperation of the sealing ring and an elastic connection, the sealing property between the core and the through hole is ensured.
Through the cooperation of the sealing ring and the elastic connector, the sealing between the core and the through hole is ensured, and the tight sealing effect can be maintained after long-term use, ensuring the quality of the PVC-U drainage pipe fittings.
Smart Images
Figure CN222858651U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high pole lamp protection devices, in particular to a PVC-U drainage pipe fitting die forming mechanism. Background Art
[0002] PVC-U drainage pipe fittings are widely used in drainage systems. PVC-U drainage pipe fittings are generally produced and processed by mold injection molding. When the injection mold of PVC-U drainage pipe fittings is in use, the core is generally inserted into the cavity, and then the mold is opened and the core is pulled out after the pipe fitting is injection molded, thereby forming a hollow pipe fitting. However, the core of this processing and molding method is frequently active, which is easy to affect the sealing of the connection with the mold after long-term use, and the sealing affects the quality of the molded pipe fitting. In this regard, this application specifically proposes a PVC-U drainage pipe fitting mold molding mechanism to ensure that the core can still ensure the sealing of the connection with the mold after long-term use. Utility Model Content
[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a PVC-U drainage pipe fitting mold forming mechanism, and the technical solution to the problem is to include a mold body, the mold body is composed of an upper mold and a lower mold that are matched in a split type, a mold cavity is provided inside the mold body, a pouring port connected to the mold cavity is provided at the upper end of the upper mold, through holes coaxially connected to the mold cavity are provided at the left and right ends of the mold body, each of the through holes is coaxially arranged with a sealing groove, each of the through holes is coaxially slidably connected to a core, each of the cores is coaxially connected to an elastic connector, the elastic connector is fixedly connected to a sealing ring plugged into the sealing groove on the corresponding side, the sealing ring is fixedly connected to a sealing ring abutting the bottom of the sealing groove, the sealing ring and the sealing ring are both coaxially slidably abutted with the core, and a driving device for driving the two cores is arranged at the lower end of the lower mold;
[0004] Each of the elastic connecting parts includes three connecting arms evenly distributed around the core and fixedly connected to the core, each of the connecting arms is fixedly connected to a sleeve, the sleeve is laterally slidably connected to an adjusting rod, one end of the adjusting rod is fixedly connected to a sealing ring, and the other end of the adjusting rod is fixedly connected to a spring together with the inner bottom surface of the sleeve.
[0005] Preferably, the driving device includes a mounting plate fixedly connected to the middle part of the lower end of the lower mold, and the mounting plate is fixedly connected to two hydraulic cylinders arranged symmetrically on the left and right. The telescopic end of each hydraulic cylinder is fixedly connected to a driving rod, and the driving rod corresponds to the core one by one and is fixedly connected.
[0006] Preferably, each core has a cavity coaxially arranged inside.
[0007] Preferably, each of the sealing rings is integrally and coaxially arranged with a retaining edge that abuts against the end surface of the lower mold.
[0008] Preferably, each of the sleeves is provided with two transverse grooves which are symmetrically arranged about its axis, and the adjusting rod is fixedly connected with two sliding blocks, and the sliding blocks correspond to the transverse grooves one by one and are slidably connected.
[0009] Preferably, two front-to-back symmetrical support parts are integrally arranged on the bottom of the lower mold.
[0010] The beneficial effects of the utility model are:
[0011] When the present application is in use, the sealing ring and the matching sealing ring can be inserted into the sealing groove, thereby ensuring the sealing of the core and the through hole matching position, thereby ensuring the quality of the injection-molded PVC-U drainage pipe fittings, and the sealing ring is connected to the elastic connecting piece. Under the reaction force and compensation effect of the elastic connecting piece, even after long-term use, the sealing ring can always be tightly pressed in the sealing groove, thereby ensuring the sealing of the core and the through hole matching position (that is, the connection between the core and the mold body). The present application has a simple structure, is easy to use, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a full cutaway stereoscopic view of the utility model.
[0013] Figure 2 It is an enlarged view of area A in the full-section stereoscopic view of the utility model.
[0014] Figure 3 This is a stereoscopic view of the utility model from the first perspective.
[0015] Figure 4 It is an enlarged view of area B in the first perspective stereoscopic view of the utility model.
[0016] Figure 5 This is a partial stereoscopic view from the second viewing angle of the utility model.
[0017] Figure 6 This is a partial stereoscopic view of the utility model from the third viewing angle.
[0018] Reference numerals
[0019] 1. Upper mold, 2. Lower mold, 3. Cavity, 4. Pouring gate, 5. Through hole, 6. Sealing groove, 7. Core, 8. Elastic connector, 9. Sealing ring, 10. Sealing ring, 11. Connecting arm, 12. Sleeve, 13. Adjusting rod, 14. Spring, 15. Mounting plate, 16. Hydraulic cylinder, 17. Driving rod, 18. Cavity, 19. Blocking edge, 20. Transverse groove, 21. Slider, 22. Support part. DETAILED DESCRIPTION
[0020] The following is combined with Figure 1-6 The specific implementation methods of the utility model are further described in detail.
[0021] Embodiment 1, the technical solution is that, when the present application is in use, the sealing ring 9 provided can be inserted into the sealing groove 6 to ensure the sealing of the core 7 and the through hole 5, thereby ensuring the quality of the injection molded PVC-U drainage pipe fittings, and the sealing ring 9 is connected to the elastic connector 8. Under the reaction force and compensation effect of the elastic connector 8, even after long-term use, the sealing ring 10 can always be tightly pressed against the sealing groove 6, thereby ensuring the sealing of the core 7 and the through hole 5 (that is, the connection between the core 7 and the mold body). The present application has a simple structure, is easy to use, and is highly practical.
[0022] Embodiment 2, based on embodiment 1, specifically, when the present application is used, the mold body is composed of an upper mold 1 and a lower mold 2 which are arranged in a bipartite manner, the mold cavity 3 of the mold body is coaxially arranged with the core 7, the radius difference between the mold cavity 3 and the core 7 is the wall thickness of the formed pipe fitting, and a pouring port 4 connected to the mold cavity 3 is arranged at the upper end of the upper mold 1, so as to add the injection molding material of the PVC-U drainage pipe fitting into the mold cavity 3 through the pouring port, thereby making the PVC-U drainage pipe fitting, and during pouring, the two cores 7 are as shown in the attached figure of the specification Figure 1 As described above, at this time, the hydraulic cylinder 16 is in a contracted state, and the opposite ends of the two cores 7 are arranged in abutment, which facilitates the molding of the PVC-U drainage pipe fittings. After the PVC-U drainage pipe fittings are formed, the two hydraulic cylinders 16 are started to extend, and the extension of the two hydraulic cylinders 16 will drive the two cores 7 to move in opposite directions through the driving rod 17 of the driving device, so that the two cores 7 can be pulled out from the molded PVC-U drainage pipe fittings, thereby forming a hollow PVC-U drainage pipe fitting. Later, when the injection molding is performed here, the two hydraulic cylinders 16 are started to contract, and the contraction of the hydraulic cylinders 16 will drive the two cores 7 to be relatively close to each other through the driving rod 17 and restore the abutment state.
[0023] Embodiment 3, based on embodiment 2, as shown in the accompanying drawings of the specification Figure 1 and Figure 2As mentioned above, at this time, the spring 14 is in a compressed state, and the reaction force of the spring 14 acts on the sealing ring 9 through the adjusting rod 13, so that the sealing ring 10 is tightly abutted against the sealing groove 6, thereby ensuring the sealing of the core 7 and the through hole 5. In the process of the hydraulic cylinder 16 extending and driving the core 7 to move out of the cavity 3, the sealing ring 9 and the sealing ring 10 will also be separated from the sealing groove 6. After being separated from the sealing groove 6, under the self-restoring extension of the spring 14, the adjusting rod 13 will move outward relative to the sleeve 12 under the action of the spring 14, thereby driving the sealing ring 9 and the sealing ring 10 to slide relative to the core 7 until the spring 14 is fully restored. Correspondingly, when the hydraulic cylinder 16 contracts and drives the core 7 to move into the cavity 3, the sealing ring 10 and the sealing ring 9 will also enter the sealing groove 6, and the sealing ring 10 will abut against the bottom wall of the sealing groove 6 to seal the matching part of the through hole 5 and the core 7. Then, as the hydraulic cylinder 16 on the mounting plate 15 continues to contract, the sealing ring 9 and the sealing ring 10 are blocked by the bottom wall of the through groove and cannot continue to move, and the adjusting rod 13 of the elastic connecting member 8 will move relative to the sleeve 12 on the connecting arm 11, so that the adjusting rod 13 moves into the sleeve 12, thereby compressing the spring 14 as shown in the accompanying drawings of the specification. Figure 1 As shown, under the reaction force of the spring 14, the sealing ring 10 has a compensation effect. Even after long-term use, the sealing ring 10 can always be tightly pressed in the sealing groove 6, thereby ensuring the sealing of the matching part of the core 7 and the through hole 5 (that is, the connection part of the core 7 and the mold body).
[0024] Embodiment 4, on the basis of embodiment 3, the sleeve 12 cooperates with the slider 21 on the adjustment through the transverse groove 20, realizing the lateral sliding connection between the adjustment rod 13 and the sleeve 12, avoiding the accidental rotation of the adjustment rod 13 and the torsion spring 14, thereby causing the spring 14 to be disconnected and affecting the use effect of the elastic connector 8. A support portion 22 is provided at the bottom of the lower mold 2 to support the mold body, and a retaining edge 19 is integrally arranged on the sealing ring 9 to abut against the end face of the lower mold 2, thereby further improving the sealing performance. A cavity 18 is provided in the core 7, which greatly saves the manufacturing cost of the core 7 and reduces the weight of the core 7.
Claims
1. A PVC-U drainage pipe fitting mold forming mechanism, characterized in that , comprising a mold body, the mold body being composed of an upper mold (1) and a lower mold (2) which are matched in a bipartite manner, a mold cavity (3) being provided inside the mold body, a pouring port (4) communicating with the mold cavity (3) being provided at the upper end of the upper mold (1), through holes (5) coaxially communicating with the mold cavity (3) being provided at the left and right ends of the mold body, each of the through holes (5) being coaxially arranged with a sealing groove (6), each of the through holes (5) being coaxially slidably connected with a core (7), each of the cores (7) being coaxially connected with an elastic connecting member (8), the elastic connecting member (8) being fixedly connected with a sealing ring (9) plugged into the sealing groove (6) on the corresponding side thereof, the sealing ring (9) being fixedly connected with a sealing ring (10) abutting against the bottom of the sealing groove (6), the sealing ring (10) and the sealing ring (9) both being coaxially slidably abutting against the core (7), and a driving device for driving the two cores (7) to move being arranged at the lower end of the lower mold (2); Each of the elastic connecting members (8) comprises three connecting arms (11) which are evenly distributed around the core (7) and fixedly connected to the core (7); each of the connecting arms (11) is fixedly connected to a sleeve (12); the sleeve (12) is laterally slidably connected to an adjusting rod (13); one end of the adjusting rod (13) is fixedly connected to a sealing ring (9); and the other end of the adjusting rod (13) is fixedly connected to a spring (14) together with an inner bottom surface of the sleeve (12).
2. A PVC-U drainage pipe fitting mold forming mechanism according to claim 1, characterized in that: The driving device comprises a mounting plate (15) fixedly connected to the middle part of the lower end of the lower mold (2), the mounting plate (15) being fixedly connected to two hydraulic cylinders (16) arranged symmetrically on the left and right, the telescopic ends of each of the hydraulic cylinders (16) being fixedly connected to a driving rod (17), the driving rods (17) corresponding one to one with the core (7) and being fixedly connected.
3. A PVC-U drainage pipe fitting mold forming mechanism according to claim 1, characterized in that: Each of the cores (7) has a cavity (18) coaxially arranged inside.
4. A PVC-U drainage pipe fitting mold forming mechanism according to claim 1, characterized in that: Each of the sealing rings (9) is integrally and coaxially arranged with a retaining edge (19) that abuts against the end surface of the lower die (2).
5. A PVC-U drainage pipe fitting mold forming mechanism according to claim 1, characterized in that: Each of the sleeves (12) is provided with two transverse grooves (20) symmetrically arranged about its axis, and the adjustment rod (13) is fixedly connected with two sliders (21), and the sliders (21) correspond to the transverse grooves (20) one by one and are slidably connected.
6. A PVC-U drainage pipe fitting mold forming mechanism according to claim 1, characterized in that: Two front-to-back symmetrical support parts (22) are integrally arranged at the bottom of the lower mold (2).