Spherical end socket forming die

Abstract

The utility model discloses a spherical head forming die, which relates to the field of spherical head forming dies and comprises a bottom plate, a die head protruding upwards is fixedly mounted at the center of the top end of the bottom plate, a plurality of guide columns penetrating to the upper portion of the bottom plate are arranged below the bottom plate, the guide columns are connected with the bottom plate in an up-and-down sliding manner, and the guide columns are connected with the bottom plate in an up-and-down sliding manner. The multiple guide columns are distributed in the circumferential direction at equal intervals, the tops of the multiple guide columns are fixedly connected with a lower pressing plate of a hollow structure, and the inner diameter of the lower pressing plate is larger than the outer diameter of the die head column part. The bottom end of the lower pressing plate is provided with a demolding mechanism extending downwards, the demolding mechanism is used for ejecting a formed spherical end socket upwards, a reset spring is connected between the bottom end of the lower pressing plate and the bottom plate in an abutting mode, and the reset spring is connected with a guide column in a sleeved mode. According to the utility model, the demoulding mechanism is arranged, so that the automatic demoulding effect of the cold-pressed spherical end socket can be realized, manual demoulding operation is not needed, and the demoulding is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of spherical head forming die, specifically a spherical head forming die. BACKGROUND

[0002] The spherical head is generally formed by cold pressing, and the main die is a die head structure with a hemispherical top. After cold pressing, the formed spherical head is generally wrapped on the outer wall of the die head.

[0003] In the prior art, in order to facilitate manual demolding, a film is placed at the bottom end of the plate before cold pressing to prevent the formed spherical head from being too tightly attached to the die head, thereby facilitating manual removal. However, this method cannot achieve automatic demolding. SUMMARY

[0004] The utility model aims at solving the problems raised in the background art and provides a spherical head forming die.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a spherical head forming die, comprising a bottom plate, a die head protruding upward is fixedly installed at the center of the top end of the bottom plate, a plurality of guide columns penetrating through the bottom plate are arranged below the bottom plate, the guide columns are slidably connected to the bottom plate, the plurality of guide columns are equidistantly distributed in the circumferential direction, a lower pressing plate in a hollow structure is fixedly connected to the top of the plurality of guide columns, and the inner diameter of the lower pressing plate is greater than the outer diameter of the column part of the die head.

[0006] A demolding mechanism extending downward is installed at the bottom end of the lower pressing plate, the demolding mechanism is used for ejecting the formed spherical head upward, a return spring is in abutment between the bottom end of the lower pressing plate and the bottom plate, and the return spring is sleeved with the guide column.

[0007] As a further scheme of the utility model: the demolding mechanism comprises a demolding ring slidably connected to the outer periphery of the die head, the inner diameter of the demolding ring is equal to the outer diameter of the column part of the die head, a plurality of fixed ears protruding outward are integrally formed on the outer periphery of the demolding ring, and the plurality of fixed ears are equidistantly distributed in the circumferential direction.

[0008] As a further scheme of the utility model: the demolding mechanism further comprises a sliding rod fixedly connected to the top of the fixed ear, the sliding rod is slidably connected to the lower pressing plate, an anti-dropping plate is integrally formed on the top of the sliding rod, and the diameter of the anti-dropping plate is greater than the diameter of the sliding rod.

[0009] As a further scheme of the utility model: a connecting spring is fixedly connected between the top end of the fixed ear and the bottom end of the lower pressing plate, and the connecting spring is sleeved with the outer periphery of the sliding rod.

[0010] As a further scheme of the utility model: the bottom end of the lower pressing plate is provided with an upwardly recessed sliding hole, the sliding hole is in sliding connection with the sliding rod, the top end of the lower pressing plate is provided with a downwardly recessed accommodating groove, the accommodating groove is used for accommodating the anti-dropping plate, and the top of the anti-dropping plate completely located inside the accommodating groove is flush with the top of the lower pressing plate.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] By setting the demolding mechanism, the cold-pressing formed spherical head can realize the effect of automatic demolding, manual demolding operation is not needed, and it is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is an internal structural schematic view of the utility model;

[0015] Figure 3 It is a starting schematic view of the sliding hole of the utility model.

[0016] In the drawing: 1, bottom plate; 2, die head; 3, guide column; 4, reset spring; 5, demolding ring; 6, fixing lug; 7, sliding rod; 8, anti-dropping plate; 9, connecting spring; 10, sliding hole; 11, accommodating groove; 12, lower pressing plate. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figures 1-3 In the embodiments of the utility model, a spherical head forming die comprises a bottom plate 1, a die head 2 protruding upward is fixedly installed at the top center of the bottom plate 1, a plurality of guide columns 3 penetrating through the bottom plate 1 to the upper side of the bottom plate 1 are arranged below the bottom plate 1, the guide columns 3 are in sliding connection with the bottom plate 1, the plurality of guide columns 3 are equidistantly distributed in the circumferential direction, a lower pressing plate 12 in a hollow structure is fixedly connected to the top of the plurality of guide columns 3, and the inner diameter of the lower pressing plate 12 is greater than the outer diameter of the column part of the die head 2. A demolding mechanism extending downward is installed at the bottom end of the lower pressing plate 12, the demolding mechanism is used for upwardly ejecting the formed spherical head, a reset spring 4 is in abutment between the bottom end of the lower pressing plate 12 and the bottom plate 1, and the reset spring 4 is sleeved with the guide column 3.

[0019] In this embodiment: First, the circular sheet material to be cold-pressed is placed on top of the anti-detachment plate 8. At this time, the demolding mechanism is in the reset state (see attached diagram). Figure 1 The demolding mechanism shown is in the unpressed state. Then, the hydraulic pusher cylinder located above the mold head 2 is activated. The hydraulic pusher cylinder moves downward, driving the upper pressure plate (the upper pressure plate is a hollow ring structure, and its inner diameter is equal to the outer diameter of the column of the mold head 2 plus the thickness of the plate) to move downward. When the upper pressure plate comes into contact with the placed circular plate, the demolding mechanism moves downward until it is in the retracted state. At this time, the upper pressure plate and the lower pressure plate 12 clamp the circular plate. Then, the hydraulic pusher cylinder continues to move downward, pushing the lower pressure plate 12 downward. The lower pressure plate 12 drives the guide column 3 to move downward. At this time, the return spring 4 is compressed. During this process, the bottom end of the circular plate gradually comes into contact with the surface of the mold head 2, realizing the cold pressing forming effect. As the upper pressure plate and the lower pressure plate 12 continue to move downward, the edge of the plate pressed between the upper pressure plate and the lower pressure plate 12 separates from the upper pressure plate and the lower pressure plate 12. The entire plate covers the outer wall of the mold head 2 after forming.

[0020] After the sheet is cold-pressed, the upper pressure plate is reset as the hydraulic cylinder is reset. At this time, the lower pressure plate 12 is reset upward synchronously under the drive of the reset spring 4, and the demolding mechanism is reset upward synchronously. After the lower pressure plate 12 is reset to the initial position, the demolding mechanism continues to reset, which can push the spherical end cap covering the surface of the mold head 2 upward, thereby achieving the demolding effect.

[0021] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3 The demolding mechanism includes a demolding ring 5 slidably connected to the outer periphery of the mold head 2. The inner diameter of the demolding ring 5 is equal to the outer diameter of the column of the mold head 2. Multiple outwardly protruding fixing ears 6 are integrally formed on the outer periphery of the demolding ring 5. The multiple fixing ears 6 are evenly distributed in the circumferential direction. The demolding mechanism also includes a sliding rod 7 fixedly connected to the top of the fixing ears 6. The sliding rod 7 is slidably connected to the lower pressure plate 12. An anti-detachment plate 8 is integrally formed on the top of the sliding rod 7. The diameter of the anti-detachment plate 8 is larger than the diameter of the sliding rod 7. A connecting spring 9 is fixedly connected between the top of the fixing ears 6 and the bottom of the lower pressure plate 12. The connecting spring 9 is sleeved on the outer periphery of the sliding rod 7.

[0022] In the embodiment, when the lower pressing plate 12 moves downward, the demolding ring 5 at this time is below the lower pressing plate 12 and does not affect the cold pressing forming of the plate, when the lower pressing plate 12 resets to the initial position, the top end surface of the anti-dropping plate 8 is flush with the top end surface of the lower pressing plate 12, as the upper pressing plate gradually rises, the connecting spring 9 continuously resets, the fixed lug 6 is pulled upward by the resetting of the connecting spring 9, the demolding ring 5 is pulled upward by the fixed lug 6, the upward moving demolding ring 5 exerts an upward thrust on the bottom end of the formed spherical head, so as to separate the spherical head from the die head 2, and the automatic demolding effect is realized.

[0023] Please pay attention to Figure 1 、 Figure 2 and Figure 3 , the bottom end of the lower pressing plate 12 is provided with an upward recessed sliding hole 10, the sliding hole 10 is slidingly connected with the sliding rod 7, the top end of the lower pressing plate 12 is provided with a downward recessed accommodating groove 11, the accommodating groove 11 is used for accommodating the anti-dropping plate 8, the top of the anti-dropping plate 8 completely located in the accommodating groove 11 is flush with the top of the lower pressing plate 12.

[0024] In the embodiment, when the sliding rod 7 slides upward, the sliding rod 7 slides upward along the sliding hole 10, when the sliding rod 7 slides downward, the sliding rod 7 drives the anti-dropping plate 8 on the top thereof to enter the accommodating groove 11, so as to avoid the anti-dropping plate 8 from affecting the cold pressing forming of the plate.

[0025] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A spherical head forming die comprising a base plate (1), characterized in that, The top end center of the bottom plate (1) is fixedly installed with an upward protruding die head (2), a plurality of guide columns (3) are arranged below the bottom plate (1) and penetrate to the top of the bottom plate (1), the guide columns (3) are slidably connected with the bottom plate (1), a plurality of the guide columns (3) are equidistantly distributed in the circumferential direction, the top of the plurality of guide columns (3) is fixedly connected with a lower pressing plate (12) in a hollow structure, the inner diameter of the lower pressing plate (12) is greater than the outer diameter of the column part of the die head (2); The bottom end of the lower pressing plate (12) is provided with a downward extending demolding mechanism, the demolding mechanism is used for upwardly ejecting the formed spherical head, the bottom end of the lower pressing plate (12) and the bottom plate (1) abut each other with a reset spring (4), the reset spring (4) is sleeved with the guide column (3).

2. A spherical head forming die according to claim 1, wherein The demolding mechanism comprises a demolding ring (5) slidably connected with the outer periphery of the die head (2), the inner diameter of the demolding ring (5) is equal to the outer diameter of the column part of the die head (2), a plurality of outward protruding fixing ears (6) are integrally formed on the outer periphery of the demolding ring (5), and the plurality of fixing ears (6) are equidistantly distributed in the circumferential direction.

3. A spherical head forming die according to claim 2, wherein The demolding mechanism further comprises a sliding rod (7) fixedly connected with the top of the fixing ear (6), the sliding rod (7) is slidably connected with the lower pressing plate (12), the top of the sliding rod (7) is integrally formed with an anti-dropping plate (8), and the diameter of the anti-dropping plate (8) is greater than the diameter of the sliding rod (7).

4. A spherical head forming die according to claim 3, wherein The top end of the fixing ear (6) and the bottom end of the lower pressing plate (12) are fixedly connected with a connecting spring (9), and the connecting spring (9) is sleeved with the outer periphery of the sliding rod (7).

5. A spherical head forming die according to claim 4, wherein The bottom end of the lower pressing plate (12) is provided with an upward recessed sliding hole (10), the sliding hole (10) is slidably connected with the sliding rod (7), the top end of the lower pressing plate (12) is provided with a downward recessed accommodating groove (11), the accommodating groove (11) is used for accommodating the anti-dropping plate (8), and the top of the anti-dropping plate (8) located in the accommodating groove (11) is flush with the top of the lower pressing plate (12).

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