Injection mold with floating drawing mechanism and injection molding process

Abstract

According to the injection mold with the floating pulling mechanism and the injection molding technology, sealing holes are formed in the surfaces of a front mold core and a rear mold core correspondingly, electric push rods are arranged on the surfaces of the front mold core and the rear mold core correspondingly, limiting grooves are formed in the side faces of the sealing holes, a containing groove is formed in the surface of a floating pulling rod, and a positioning pipe is in threaded connection with the interior of the containing groove; the injection mold has the beneficial effects that after an implant is placed in the rear mold core, the electric push rod can be started to push the support frame, so that the floating rod can move in the sealing hole, and the positioning ring is inserted into the positioning clamping groove, so that the injection mold is convenient to use, and the service life of the injection mold is prolonged. When the mold is used, an implant in the mold can be fixedly supported through multiple groups of floating drawing rods, then a cavity can be filled with plastic, a metal part is preliminarily filled (the cavity is not filled) under the positioning of floating positioning, then the interior of the mold can be filled by drawing out the floating drawing rods, and production can be carried out after cooling, mold opening and demolding are carried out subsequently.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection mold with a floating mechanism and an injection molding process. Background Art

[0002] Plastic molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products complete configurations and precise dimensions. Due to the wide variety of plastics and processing methods, the structures of plastic molding machines and plastic products vary in complexity, and the types and structures of plastic molds are also diverse.

[0003] In the prior art, in order to improve production efficiency when producing new energy battery covers, injection molds are used for rapid injection molding. On the one hand, it is convenient to mass produce new energy covers, and on the other hand, the efficiency of new energy cover production can be improved through the injection molding process.

[0004] However, generally after placing the implant in the cavity of the rear mold core, the implant is suspended in the mold and cannot be positioned, making it inconvenient to fix the implant. For this purpose, the present invention proposes an injection mold and an injection molding process with a floating mechanism to solve the above-mentioned technical problems. Summary of the invention

[0005] The object of the present invention is to provide an injection mold and an injection molding process with a floating mechanism to solve the problem that an implant is suspended in the mold and cannot be positioned.

[0006] To achieve the above object, the present invention provides the following technical solution: an injection mold with a floating mechanism, comprising: a front mold core and a rear mold core, the surfaces of the front mold core and the rear mold core are both provided with sealing holes, the surface of the front mold core is provided with a gate, the surfaces of the front mold core and the rear mold core are both provided with electric push rods, and the side of the sealing hole is provided with a limiting groove;

[0007] A floating rod, the surface of which is provided with a receiving groove, a positioning tube is screwed in the receiving groove, a moving rod is arranged on the inner side of the positioning tube, and a limiting plate is sleeved on the surface of the moving rod;

[0008] A positioning ring is provided with a positioning slot on its surface, a fixing plate is inserted into the positioning slot, and a support frame is provided at one end of the fixing plate.

[0009] Furthermore, the inner ring surface of the positioning ring is provided with threads, the positioning ring can be screwed to the outer surface of the floating rod, two groups of positioning grooves are provided, the two groups of positioning grooves are symmetrically distributed about the center point of the positioning ring surface, and the positioning ring can extend into the sealing hole.

[0010] Furthermore, a damping bearing is provided on the surface of the positioning ring, and a limiting rod is fixedly connected to the inner ring surface of the damping bearing. An auxiliary plate is provided at one end of the limiting rod. Two groups of limiting rods are provided, and the two groups of limiting rods are symmetrically distributed about the floating rod. A second auxiliary plate is provided on the surface of the limiting rod, and the second auxiliary plate is a square plate-shaped structure.

[0011] Furthermore, the fixing plate is a square plate structure, an auxiliary groove is opened on the side of the fixing plate, one end of the fixing plate can be inserted into the positioning slot, one end of the second auxiliary plate can be inserted into the auxiliary groove, and the lifting end of the electric push rod can be connected to the surface of the support frame by bolts.

[0012] Furthermore, the floating rod can be displaced in the sealing hole, the cross-section of the limiting groove is stepped, and movable openings are opened on the sides of the floating rod and the positioning tube. One end of the limiting plate can pass through the movable opening and be placed on the surface of the limiting groove. The limiting plate as a whole has an "L"-shaped plate structure.

[0013] Furthermore, a limit spring is provided on the end surface of the storage groove, one end of the limit spring is fixedly connected to the end surface of the storage groove, and the other end of the limit spring is fixedly connected to a push plate, which contacts the bottom of the positioning tube and has a circular plate-like structure.

[0014] Furthermore, the limit plate can be displaced along the moving rod, and a return spring is sleeved on the surface of the moving rod. One end of the return spring is fixedly connected to the side of the positioning tube, and the other end of the return spring is fixedly connected to the side of the limit plate. Two groups of return springs are provided, and the two groups of return springs displace the two ends of the moving rod respectively.

[0015] Furthermore, a sealing cover is provided at one end of the positioning tube, and an auxiliary plate can limit the upper surface of the sealing cover. The auxiliary plate is a square plate-shaped structure. A second positioning plate is provided on the inner side of the positioning tube. A fixing groove is provided on the surface of the second positioning plate. There are multiple groups of fixing grooves, and the multiple groups of fixing grooves correspond to the steps of the stepped limiting grooves.

[0016] Furthermore, a lifting groove is provided on the end face of the limit plate, a lifting rod is provided on the end face of the lifting groove, a limit block is sleeved on the surface of the lifting rod, a damping ring is provided in the limit block, the limit block can be inserted into the fixing groove, and the limit block is sleeved on the lifting rod using the damping ring.

[0017] An injection molding process of an injection mold with a floating extraction mechanism specifically comprises the following steps:

[0018] S1: First, place the metal part inside the cavity of the rear mold core, and then close the front mold core with the rear mold core;

[0019] S2: Secondly, the electric push rod can be started to push the support frame, so that the floating rod can be displaced in the sealing hole, and the metal parts in the mold can be fixedly supported by multiple groups of floating rods;

[0020] S3: Then, the plastic can be injected into the mold through the gate to fill the cavity, and the cavity in the rear mold core can be filled;

[0021] S4: Finally, the inside of the mold can be filled by pulling out the electric push rod, and then the mold can be cooled, opened and demolded before production can begin.

[0022] In summary, due to the adoption of the above technology, the beneficial effects of the present invention are:

[0023] The present invention provides an injection mold and an injection molding process with a floating mechanism. When the implant is placed in the rear mold core during use, the electric push rod can be started to push the support frame, so that the floating rod can be displaced in the sealing hole. The implant in the mold can be fixedly supported by multiple groups of floating rods, and then the plastic can fill the cavity. The metal parts can be initially filled (the cavity is not fully filled) under the floating positioning, and then the floating rod can be pulled out to fill the inside of the mold. After cooling, mold opening and demolding, production can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an injection mold with a floating extraction mechanism and an injection molding process of the present invention;

[0025] Figure 2 This is a front view of an injection mold with a floating mechanism and an injection molding process of the present invention;

[0026] Figure 3 It is a structural schematic diagram of an injection mold with a floating extraction mechanism and an injection molding process when tilted according to the present invention;

[0027] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 It is a schematic diagram of the structure of an injection mold with a floating extraction mechanism and a front mold core in an injection molding process of the present invention;

[0029] Figure 6 for Figure 5 The enlarged structural diagram at B in the middle;

[0030] Figure 7 This is a schematic diagram of the cross-sectional structure of the floating pumping rod of the present invention;

[0031] Figure 8 for Figure 7 The enlarged structural diagram at C in the middle;

[0032] Fig. 9 This is a schematic diagram of the structure of the floating pumping rod of the present invention;

[0033] Fig.10 A schematic diagram of the structure of the floating pumping rod of the present invention when it is tilted after being cut away.

[0034] In the figure: 1. front mold core; 2. rear mold core; 3. sealing hole; 4. gate; 5. floating rod; 6. storage groove; 7. positioning tube; 8. moving rod; 9. limiting plate; 10. positioning ring; 11. positioning slot; 12. fixed plate; 13. support frame; 14. electric push rod; 15. limiting slot; 16. damping bearing; 17. limiting rod; 18. auxiliary plate; 19. second auxiliary plate; 20. auxiliary slot; 21. moving port; 22. limiting spring; 23. push plate; 24. reset spring; 25. sealing cover; 26. second positioning plate; 27. fixed slot; 28. lifting slot; 29. ​​lifting rod; 30. limiting block; 31. damping ring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0036] Embodiment 1

[0037] The present invention provides Figure 1-Figure 10 As shown, an injection mold with a floating mechanism comprises: a front mold core 1 and a rear mold core 2, the surfaces of the front mold core 1 and the rear mold core 2 are both provided with a sealing hole 3, the surface of the front mold core 1 is provided with a gate 4, the surfaces of the front mold core 1 and the rear mold core 2 are both provided with an electric push rod 14, and the side of the sealing hole 3 is provided with a limiting groove 15;

[0038] A floating rod 5, a receiving groove 6 is provided on the surface of the floating rod 5, a positioning tube 7 is screwed in the receiving groove 6, a moving rod 8 is provided on the inner side of the positioning tube 7, and a limiting plate 9 is sleeved on the surface of the moving rod 8;

[0039] A positioning ring 10, a positioning slot 11 is provided on the surface of the positioning ring 10, a fixing plate 12 is inserted into the positioning slot 11, and a support frame 13 is provided at one end of the fixing plate 12;

[0040] After the implant is placed in the rear mold core 2, the electric push rod 14 can be started to push the support frame 13, so that the floating rod 5 can be displaced in the sealing hole 3, and the implant in the mold can be fixedly supported by multiple groups of floating rods 5. Then the plastic can fill the cavity, and the metal parts can be initially filled (not fully filled in the cavity) under the floating positioning. Then the floating rod 5 can be pulled out to fill the inside of the mold, and then the production can be carried out after cooling, mold opening and demolding.

[0041] Embodiment 2: Figure 2-Figure 8 As shown, more specifically, in order to facilitate the positioning of metal parts of different thicknesses, a limit plate 9 is provided, the floating rod 5 can be displaced in the sealing hole 3, the cross-section of the limit groove 15 is stepped, and the floating rod 5 and the side of the positioning tube 7 are provided with a moving opening 21, one end of the limit plate 9 can pass through the moving opening 21 and be placed on the surface of the limit groove 15, the limit plate 9 is an "L"-shaped plate structure as a whole, a sealing cover 25 is provided at one end of the positioning tube 7, the auxiliary plate 18 can limit the upper surface of the sealing cover 25, and the auxiliary plate 18 is a square plate structure A second positioning plate 26 is provided on the inner side of the positioning tube 7, and a fixing groove 27 is provided on the surface of the second positioning plate 26. The fixing groove 27 is provided in multiple groups, and the multiple groups of fixing grooves 27 correspond to the steps of the stepped limiting groove 15. A lifting groove 28 is provided on the end surface of the limiting plate 9, and a lifting rod 29 is provided on the end surface of the lifting groove 28. A limiting block 30 is sleeved on the surface of the lifting rod 29, and a damping ring 31 is provided in the limiting block 30. The limiting block 30 can be inserted into the fixing groove 27, and the limiting block 30 is sleeved on the lifting rod 29 by using the damping ring 31;

[0042] During use, when it is necessary to position metal parts of different thicknesses, the limit block 30 can be first pulled out of the fixing groove 27, and then the limit plate 9 can be conveniently displaced, so that the length of one end of the limit plate 9 extending out of the moving opening 21 can be adjusted, and the length of one end of the limit plate 9 extending out can be adjusted by inserting one end of the limit block 30 into different fixing grooves 27, so that one end of the limit plate 9 can be conveniently placed on different sides of the limit groove 15 for support and limitation, thereby avoiding the problem that the floating rod 5 may cause clamping damage to the surface of the metal part when the electric push rod 14 pushes the floating rod 5. The limit plate 9 cooperates with the limit groove 15 to limit the displacement of the floating rod 5, which can conveniently protect the metal part when positioning. The setting of the damping ring 31 can avoid the problem of the limit block 30 being displaced arbitrarily along the lifting rod 29.

[0043] In order to improve the stability of the limit plate 9, a limit spring 22 is set, and a limit spring 22 is set on the end surface of the storage groove 6. One end of the limit spring 22 is fixedly connected to the end surface of the storage groove 6, and the other end of the limit spring 22 is fixedly connected to a push plate 23. The push plate 23 contacts the bottom of the positioning tube 7. The push plate 23 is a circular plate structure. The limit plate 9 can be displaced along the moving rod 8. A return spring 24 is sleeved on the surface of the moving rod 8. One end of the return spring 24 is fixedly connected to the side of the positioning tube 7, and the other end of the return spring 24 is fixedly connected to the side of the limit plate 9. Two groups of return springs 24 are provided, and the two groups of return springs 24 displace the two ends of the moving rod 8 respectively.

[0044] During use, when the limit block 30 is disengaged from the fixed groove 27, the upward elastic force of the limit spring 22 can push the positioning tube 7, so that the upward thrust of the positioning tube 7 can be used to increase the friction between one end of the limit plate 9 and the surface of the moving port 21. The setting of the return spring 24 can increase the damping feeling of the movement of the limit plate 9, so that the limit block 30 can be subjected to the pulling force of the return spring 24 after being inserted into the fixed groove 27, thereby improving the friction between the limit block 30 and the fixed groove 27 and increasing the stability of the limit block 30 inserted into the fixed groove 27.

[0045] Embodiment 3: Figure 1-Figure 6 As shown, more specifically, in order to facilitate the fixing of the fixed plate 12, a limit rod 17 is arranged, the fixed plate 12 is in a square plate-like structure, an auxiliary groove 20 is provided on the side of the fixed plate 12, one end of the fixed plate 12 can be inserted into the positioning slot 11, one end of the second auxiliary plate 19 can be inserted into the auxiliary groove 20, the lifting end of the electric push rod 14 can be connected to the surface of the support frame 13 by bolts, a damping bearing 16 is arranged on the surface of the positioning ring 10, the inner ring surface of the damping bearing 16 is fixedly connected to the limit rod 17, an auxiliary plate 18 is arranged at one end of the limit rod 17, two groups of limit rods 17 are arranged, the two groups of limit rods 17 are symmetrically distributed about the floating rod 5, and a second auxiliary plate 19 is arranged on the surface of the limit rod 17, and the second auxiliary plate 19 is in a square plate-like structure;

[0046] First, after one end of the fixed plate 12 is inserted into the positioning slot 11, the limiting rod 17 can be rotated in conjunction with the damping bearing 16, so that the second auxiliary plate 19 can be conveniently inserted into the auxiliary slot 20. The fixed plate 12 can be fixed by the cooperation of the second auxiliary plate 19 and the positioning slot 11, so that the rearward electric push rod 14 can be conveniently moved to connect with the support frame 13. When the limiting rod 17 is rotated to limit the fixed plate 12 using the second auxiliary plate 19, one end of the auxiliary plate 18 can be rotated to the top of the sealing cover 25. On the one hand, the sealing cover 25 can be fixed in the positioning tube 7, and on the other hand, the positioning tube 7 can also be fixed.

[0047] In order to facilitate the removal of the floating rod 5, a positioning ring 10 is provided. The inner ring surface of the positioning ring 10 is provided with a thread. The positioning ring 10 can be screwed to the outer surface of the floating rod 5. Two groups of positioning grooves 11 are provided. The two groups of positioning grooves 11 are symmetrically distributed about the center point of the surface of the positioning ring 10. The positioning ring 10 can extend into the sealing hole 3;

[0048] First, the second auxiliary plate 19 can be rotated out of the auxiliary groove 20 by rotating the limiting rod 17, so that the fixing plate 12 can be removed, and then the positioning ring 10 can be rotated to screw the positioning ring 10 off the floating rod 5. When the limiting rod 17 is rotated, the auxiliary plate 18 can lose the limit on the sealing cover 25, and then the limiting plate 9 can be moved so that one end of the limiting plate 9 is received in the positioning tube 7, so that the positioning tube 7 can be directly pulled out from the receiving groove 6, and then the floating rod 5 can be separated from other structures more conveniently.

[0049] An injection molding process of an injection mold with a floating extraction mechanism specifically comprises the following steps:

[0050] S1: First, place the metal part inside the cavity of the rear mold core 2, and then close the front mold core 1 and the rear mold core 2;

[0051] S2: Secondly, the electric push rod 14 can be started to push the support frame 13, so that the floating rod 5 can be displaced in the sealing hole 3, and the metal parts in the mold can be fixedly supported by multiple groups of floating rods 5;

[0052] S3: Then, the plastic can be injected into the mold through the gate 4 to fill the cavity, and the cavity in the rear mold core 2 is not filled;

[0053] S4: Finally, the interior of the mold can be filled by pulling out the floating draw rod 5 through the electric push rod 14, and then the mold can be cooled, opened and demolded to start production.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. An injection mold with a floating mechanism, characterized in that: include: A front mold core (1) and a rear mold core (2), wherein the surfaces of the front mold core (1) and the rear mold core (2) are both provided with sealing holes (3), the surface of the front mold core (1) is provided with a gate (4), the surfaces of the front mold core (1) and the rear mold core (2) are both provided with electric push rods (14), and the side surfaces of the sealing holes (3) are provided with limiting grooves (15); A floating rod (5), a receiving groove (6) is provided on the surface of the floating rod (5), a positioning tube (7) is screwed into the receiving groove (6), a moving rod (8) is provided on the inner side of the positioning tube (7), and a limiting plate (9) is sleeved on the surface of the moving rod (8); A positioning ring (10) is provided with a positioning slot (11) on its surface, a fixing plate (12) is inserted into the positioning slot (11), and a support frame (13) is provided at one end of the fixing plate (12).

2. The injection mold with a floating mechanism according to claim 1, characterized in that: The inner ring surface of the positioning ring (10) is provided with threads. The positioning ring (10) can be screwed onto the outer surface of the floating rod (5). Two groups of positioning grooves (11) are provided. The two groups of positioning grooves (11) are symmetrically distributed about the center point of the surface of the positioning ring (10). The positioning ring (10) can extend into the sealing hole (3).

3. The injection mold with a floating mechanism according to claim 1, characterized in that: The surface of the positioning ring (10) is provided with a damping bearing (16), the inner ring surface of the damping bearing (16) is fixedly connected to a limiting rod (17), one end of the limiting rod (17) is provided with an auxiliary plate (18), two groups of limiting rods (17) are provided, the two groups of limiting rods (17) are symmetrically distributed about the floating rod (5), and the surface of the limiting rod (17) is provided with a second auxiliary plate (19), and the second auxiliary plate (19) is a square plate structure.

4. The injection mold with a floating mechanism according to claim 1, characterized in that: The fixing plate (12) is in a square plate-like structure, and an auxiliary groove (20) is provided on the side of the fixing plate (12). One end of the fixing plate (12) can be inserted into the positioning groove (11), and one end of the second auxiliary plate (19) can be inserted into the auxiliary groove (20). The lifting end of the electric push rod (14) can be connected to the surface of the support frame (13) by bolts.

5. The injection mold with a floating mechanism according to claim 1, characterized in that: The floating rod (5) can be displaced in the sealing hole (3); the cross section of the limiting groove (15) is stepped; both the floating rod (5) and the side of the positioning tube (7) are provided with a moving opening (21); one end of the limiting plate (9) can pass through the moving opening (21) and be placed on the surface of the limiting groove (15); the limiting plate (9) is an "L"-shaped plate structure as a whole.

6. The injection mold with a floating mechanism according to claim 1, characterized in that: A limit spring (22) is arranged on the end surface of the receiving groove (6), one end of the limit spring (22) is fixedly connected to the end surface of the receiving groove (6), and the other end of the limit spring (22) is fixedly connected to a push plate (23), the push plate (23) is in contact with the bottom of the positioning tube (7), and the push plate (23) is a circular plate-shaped structure.

7. The injection mold with a floating mechanism according to claim 1, characterized in that: The limit plate (9) can be displaced along the moving rod (8). A return spring (24) is sleeved on the surface of the moving rod (8). One end of the return spring (24) is fixedly connected to the side of the positioning tube (7), and the other end of the return spring (24) is fixedly connected to the side of the limit plate (9). Two groups of return springs (24) are provided, and the two groups of return springs (24) respectively displace the two ends of the moving rod (8).

8. The injection mold with a floating mechanism according to claim 1, characterized in that: A sealing cover (25) is arranged at one end of the positioning tube (7), and an auxiliary plate (18) can limit the upper surface of the sealing cover (25). The auxiliary plate (18) is in a square plate structure. A second positioning plate (26) is arranged on the inner side of the positioning tube (7). A fixing groove (27) is arranged on the surface of the second positioning plate (26). The fixing groove (27) is provided in multiple groups, and the multiple groups of fixing grooves (27) correspond to the steps of the stepped limiting groove (15).

9. The injection mold with a floating mechanism according to claim 1, characterized in that: The end surface of the limit plate (9) is provided with a lifting groove (28), the end surface of the lifting groove (28) is provided with a lifting rod (29), the surface of the lifting rod (29) is provided with a limit block (30), a damping ring (31) is provided in the limit block (30), the limit block (30) can be inserted into the fixing groove (27), and the limit block (30) is sleeved on the lifting rod (29) by means of the damping ring (31).

10. An injection molding process of an injection mold with a floating mechanism according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, the metal part is placed in the cavity of the rear mold core (2), and then the front mold core (1) and the rear mold core (2) are molded together; S2: Secondly, the electric push rod (14) can be started to push the support frame (13), so that the floating rod (5) can be displaced in the sealing hole (3), and the metal parts in the mold can be fixedly supported by multiple groups of floating rods (5); S3: Then, the plastic is injected into the mold through the gate (4) to fill the cavity, and the cavity in the rear mold core (2) is not completely filled; S4: Finally, the interior of the mold can be filled by pulling out the floating draw rod (5) through the electric push rod (14), and then the mold can be cooled, opened and demolded before production can begin.

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