A PVC swirl four-way pipe injection mold

Abstract

The utility model discloses a PVC swirl four-way pipe fitting injection mold, which relates to the technical field of injection molds. The scheme comprises a base, an upper surface of the base is fixedly connected with a mounting plate, an upper surface of the mounting plate is fixedly connected with a lower mold, an upper mold is arranged above the lower mold, and a molding cavity for molding the PVC swirl four-way pipe fitting is opened on the upper surface of the lower mold and the lower surface of the upper mold. The utility model provides a relative movement mechanism, and the rotation of a motor can drive the L-shaped plates on both sides to move relative to each other, and under the action of a stroke groove and a first guide rod, the L-shaped plates, a first core and a second core can be guided to move accurately, and the structure is simple, and the use cost can be reduced. Through the buffer mechanism, when the core is combined, the second circular plate contacts the surface of the upper and lower molds, and at this time, the spring can play a buffering role to avoid rigid contact with the upper and lower molds, thereby reducing wear and improving service life.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a PVC swirl four-way pipe fitting. Background Art

[0002] PVC swirl cross fittings are special fittings used to connect drainage risers and lateral branches in building drainage systems. The purpose of using this fitting is to allow the water flow from the lateral branch to pass through the fitting and flow tangentially into the riser, forming a wall-attached spiral flow and eliminating the "water tongue" phenomenon in the drainage system.

[0003] The Chinese patent publication number CN212948963U discloses a PVC swirl four-way pipe fitting injection mold, comprising a movable mold plate provided with a movable mold cavity and a fixed mold plate provided with a fixed mold cavity, wherein a core assembly adapted thereto is provided inside the space formed by the movable mold cavity and the fixed mold cavity. The PVC swirl four-way pipe fitting injection mold, by respectively arranging two transverse tube core assemblies on both sides of a vertical tube assembly and being tangent thereto, enables the two transverse tube core assemblies to be synchronously drawn into the core, and the structure performs rapid core entry.

[0004] Although the above technical solution can perform synchronous and rapid core extraction, it requires the use of complex structures such as the first slide rail, the first slide seat, the second slide rail and the second slide seat to achieve the positioning and movement of the four cores, which increases the cost of use. In addition, there is no buffer structure, and rigid contact is likely to occur during movement, thereby causing wear on the mold and thus affecting its service life. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a PVC swirl four-way pipe injection mold, which solves the problems raised in the background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a PVC swirl four-way pipe injection mold, including a base, the upper surface of the base is fixedly connected with a mounting plate, the upper surface of the mounting plate is fixedly connected with a lower mold, an upper mold is arranged above the lower mold, the upper surface of the lower mold and the lower surface of the upper mold are both provided with a molding cavity for molding the PVC swirl four-way pipe, two groups of relative moving mechanisms are symmetrically installed through the upper surface of the base, the movable ends of the relative moving mechanisms are fixedly installed with buffer mechanisms, one side of the buffer mechanism is fixedly connected with a baffle, one side of the outer surface of any two opposite baffles is fixedly connected with a first core, and the outer surfaces of the other two opposite baffles are fixedly connected with a second core matching the first core;

[0007] The buffer mechanism includes a first circular plate fixedly connected to the movable end of the relatively movable mechanism, a plurality of second guide rods are slidably connected through an annular array on the outer surface of the first circular plate, the other end of the second guide rod is fixedly connected to a second circular plate, the baffle is fixedly connected to one side of the second circular plate, and a plurality of springs are fixedly connected between the first circular plate and the second circular plate.

[0008] Preferably, one end of the second guide rod extends to the outside of the first circular plate and is threadedly connected to a limiting nut, so as to facilitate limiting the position of the second circular plate.

[0009] Preferably, the relative movement mechanism includes a motor fixedly mounted on one side of the outer surface of the base, the output shaft of the motor is fixedly connected to a bidirectional screw, the outer surface of the bidirectional screw is symmetrically threaded with two L-shaped plates, one end of the L-shaped plate is fixedly connected to the outer surface of the first circular plate, so as to drive the relative movement of the two first cores and the second core.

[0010] Preferably, the upper surface of the base is provided with a travel groove slidably connected to the L-shaped plate, and the outer surface of the mounting plate is fixedly connected with a first guide rod all around. The first guide rod passes through adjacent L-shaped plates and is slidably connected to the L-shaped plates to facilitate guiding.

[0011] Preferably, the two bidirectional screw rods are perpendicular to each other and staggered to facilitate normal operation of the two relative movement mechanisms.

[0012] Preferably, a positioning rod is fixedly connected to the upper surface of the lower mold, and a positioning hole matching the positioning rod is opened on the lower surface of the upper mold to facilitate the clamping of the lower mold and the upper mold.

[0013] The utility model provides a PVC swirl four-way pipe injection mold, which has the following beneficial effects:

[0014] 1. The PVC swirl four-way pipe injection mold has a relative movement mechanism, and the rotation of the motor drives the rotation of the bidirectional screw rod, and the L-shaped plates on both sides can be driven to move relative to each other through the thread. Under the action of the stroke groove and the first guide rod, the L-shaped plate, the first core and the second core can be guided to move accurately. The structure is simple and the use cost can be reduced, thereby solving the problem that the existing injection mold needs to use a first slide rail, a first slide seat, a second slide rail and a second slide seat and other complex structures to increase the use cost.

[0015] 2. This PVC swirl four-way pipe injection mold has a buffer mechanism. When the core is combined, the second circular plate contacts the surface of the upper and lower molds. At this time, it can play a buffering role under the action of the spring to avoid rigid contact between the upper and lower molds, thereby reducing wear and improving service life, thereby solving the problem that the existing injection mold has no buffer structure and is prone to rigid contact, resulting in mold damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the lower mold and the upper mold of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of part of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the bidirectional moving mechanism and the buffer mechanism of the utility model;

[0020] Figure 5 This is a diagram showing the coordination of the first core and the second core of the utility model.

[0021] In the figure, 1. base; 2. mounting plate; 3. lower mold; 4. upper mold; 5. molding cavity; 6. relative movement mechanism; 61. motor; 62. bidirectional screw; 63. L-shaped plate; 64. travel groove; 65. first guide rod; 7. buffer mechanism; 71. first circular plate; 72. second guide rod; 73. second circular plate; 74. spring; 75. limit nut; 8. baffle; 9. first core; 10. second core; 11. positioning rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figures 1 to 5 As shown, a PVC swirl four-way pipe injection mold comprises a base 1, the upper surface of the base 1 is fixedly connected to a mounting plate 2, the upper surface of the mounting plate 2 is fixedly connected to a lower mold 3, an upper mold 4 is arranged above the lower mold 3, and a molding cavity 5 for molding the PVC swirl four-way pipe fitting is opened on the upper surface of the lower mold 3 and the lower surface of the upper mold 4.

[0025] Two sets of relative movement mechanisms 6 are symmetrically installed on the upper surface of the base 1, and the relative movement mechanism 6 includes a motor 61 fixedly installed on one side of the outer surface of the base 1. The output shaft of the motor 61 is fixedly connected to a bidirectional screw 62. The outer surface of the bidirectional screw 62 is symmetrically threaded with two L-shaped plates 63, and one end of the L-shaped plate 63 is fixedly connected to the outer surface of the first circular plate 71. The upper surface of the base 1 is provided with a travel groove 64 slidably connected to the L-shaped plate 63.

[0026] The outer surface of the mounting plate 2 is fixedly connected with first guide rods 65 all around, and the first guide rods 65 penetrate the adjacent L-shaped plates 63 and are slidably connected with the L-shaped plates 63. The two bidirectional screw rods 62 are perpendicular to each other and staggered. The upper surface of the lower mold 3 is fixedly connected with a positioning rod 11, and the lower surface of the upper mold 4 is provided with a positioning hole that matches the positioning rod 11.

[0027] When in use, first start the two motors 61. The rotation of the motor 61 drives the bidirectional screw 62 to rotate, and the L-shaped plates 63 on both sides can be driven to move relative to each other through the threads. Under the action of the travel groove 64 and the first guide rod 65, the L-shaped plates 63, the first core 9 and the second core 10 can be guided to move accurately. The structure is simple and the cost of use can be reduced, thereby solving the problem that the existing injection mold needs to use complex structures such as the first slide rail, the first slide seat, the second slide rail and the second slide seat to increase the cost of use.

[0028] Example 2

[0029] like Figures 1 to 5 As shown, the movable ends of the relative moving mechanisms 6 are fixedly installed with buffer mechanisms 7, one side of the buffer mechanisms 7 is fixedly connected with a baffle 8, one side of the outer surfaces of any two opposite baffles 8 are fixedly connected with a first core 9, and the outer surfaces of the two opposite baffles 8 are also fixedly connected with a second core 10 that matches the first core 9.

[0030] The buffer mechanism 7 includes a first circular plate 71 fixedly connected to the movable end of the relative moving mechanism 6, a plurality of second guide rods 72 are slidably connected to the outer surface of the first circular plate 71 in an annular array, a second circular plate 73 is fixedly connected to the other end of the second guide rod 72, the baffle 8 is fixedly connected to one side of the second circular plate 73, and a plurality of springs 74 are fixedly connected between the first circular plate 71 and the second circular plate 73. One end of the second guide rod 72 extends to the outside of the first circular plate 71 and is threadedly connected to a limit nut 75.

[0031] When the core is combined, the two sets of relative moving mechanisms 6 move relative to each other, which will cause the second circular plate 73 to contact the surfaces of the upper and lower molds. At this time, the spring 74 can play a buffering role to avoid rigid contact between the upper and lower molds, thereby reducing wear and increasing service life, thereby solving the problem that the existing injection mold has no buffer structure and is prone to rigid contact, resulting in mold damage.

[0032] Working principle: When in use, first start the two motors 61. The rotation of the motor 61 drives the bidirectional screw 62 to rotate, and the L-shaped plates 63 on both sides can be driven to move relative to each other through the thread. Under the action of the stroke groove 64 and the first guide rod 65, the L-shaped plates 63, the first core 9 and the second core 10 can be guided to move accurately. The structure is simple and can reduce the cost of use, thereby solving the problem that the existing injection mold needs to use complex structures such as the first slide rail, the first slide seat, the second slide rail and the second slide seat to increase the cost of use. When the core is combined, the two sets of relative moving mechanisms 6 move relative to each other, which will make the second circular plate 73 contact the surfaces of the upper and lower molds. At this time, under the action of the spring 74, it can play a buffering role to avoid rigid contact with the upper and lower molds, thereby reducing wear and increasing service life, thereby solving the problem that the existing injection mold has no buffer structure and is prone to rigid contact and causes mold damage.

Claims

1. A PVC swirl cross-type pipe injection mold, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a mounting plate (2), the upper surface of the mounting plate (2) is fixedly connected to a lower mold (3), an upper mold (4) is arranged above the lower mold (3), the upper surface of the lower mold (3) and the lower surface of the upper mold (4) are both provided with a molding cavity (5) for molding a PVC swirl four-way pipe fitting, two groups of relatively movable mechanisms (6) are symmetrically installed through the upper surface of the base (1), the movable ends of the relatively movable mechanisms (6) are fixedly installed with buffer mechanisms (7), one side of the buffer mechanism (7) is fixedly connected to a baffle (8), one side of the outer surface of any two opposing baffles (8) is fixedly connected to a first core (9), and the outer surfaces of the other two opposing baffles (8) are fixedly connected to a second core (10) that matches the first core (9); The buffer mechanism (7) comprises a first circular plate (71) fixedly connected to the movable end of the relatively movable mechanism (6); a plurality of second guide rods (72) are slidably connected to the outer surface of the first circular plate (71) in an annular array; the other end of the second guide rod (72) is fixedly connected to a second circular plate (73); the baffle (8) is fixedly connected to one side of the second circular plate (73); and a plurality of springs (74) are fixedly connected between the first circular plate (71) and the second circular plate (73).

2. The PVC swirl four-way pipe injection mold according to claim 1, characterized in that: One end of the second guide rod (72) extends to the outside of the first circular plate (71) and is threadedly connected to a limit nut (75).

3. The PVC swirl four-way pipe injection mold according to claim 1, characterized in that: The relative movement mechanism (6) comprises a motor (61) fixedly mounted on one side of the outer surface of the base (1); the output shaft of the motor (61) is fixedly connected to a bidirectional screw rod (62); the outer surface of the bidirectional screw rod (62) is symmetrically threadedly connected to two L-shaped plates (63); one end of the L-shaped plate (63) is fixedly connected to the outer surface of the first circular plate (71).

4. The PVC swirl four-way pipe injection mold according to claim 3, characterized in that: The upper surface of the base (1) is provided with a travel groove (64) slidably connected to the L-shaped plate (63), and the outer surface of the mounting plate (2) is fixedly connected to first guide rods (65) all around, and the first guide rods (65) penetrate adjacent L-shaped plates (63) and are slidably connected to the L-shaped plates (63).

5. The PVC swirl four-way pipe injection mold according to claim 4, characterized in that: The two bidirectional screw rods (62) are perpendicular to each other and are staggered.

6. The PVC swirl four-way pipe injection mold according to claim 1, characterized in that: A positioning rod (11) is fixedly connected to the upper surface of the lower mold (3), and a positioning hole matching the positioning rod (11) is provided on the lower surface of the upper mold (4).

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