Turnover mechanism for die assembly

Abstract

The utility model discloses a turnover mechanism for mold closing, which is used for realizing turnover mold closing of a fixed mold and a movable mold and comprises a fixed mold upper hinging piece fixedly mounted on one side of the fixed mold and a movable mold upper hinging piece fixedly mounted on one side of the movable mold, the fixed mold upper hinging piece is arranged corresponding to the fixed mold upper hinging piece, the movable mold lower hinging piece is arranged corresponding to the movable mold upper hinging piece, and the fixed mold upper hinging piece, the movable mold upper hinging piece, the movable mold lower hinging piece and the fixed mold lower hinging piece are sequentially hinged end to end; the fixed mold upper hinge piece and the movable mold upper hinge piece are connected through a hinge shaft, the fixed mold lower hinge piece and the movable mold lower hinge piece are both hinged to the connecting base, a power unit is installed between the hinge shaft and the connecting base, the power unit controls the connecting base to be close to or away from the hinge shaft, the movable mold can be driven to rotate around the hinge shaft, and therefore mold closing and mold opening of the movable mold and the fixed mold are achieved. The whole mold closing process is more stable and easy to control.

Description

Technical Field

[0001] The utility model relates to the field of mold manufacturing, and particularly relates to a turnover mechanism for mold clamping. Background Art

[0002] In industrial production, molds are various dies and tools used to obtain required products by methods such as injection molding, blow molding, extrusion molding, die casting or forging. Briefly, a mold is a tool for making formed articles. Such a tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the external shape of an article by changing the physical state of the formed material. Currently, most molds perform upper mold and demolding in the vertical direction. The structure of the mold is not flexible enough, the applicable range is limited, and continuous high-strength support needs to be provided for the upper mold to reciprocate on the track, resulting in poor stability when facing large molds. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a turnover mechanism for mold clamping, including:

[0004] A fixed mold upper hinge member, which is fixedly installed on one side of the fixed mold;

[0005] A moving mold upper hinge member, which is fixedly installed on one side of the moving mold;

[0006] And a fixed mold lower hinge member corresponding to the fixed mold upper hinge member, and a moving mold lower hinge member corresponding to the moving mold upper hinge member. The fixed mold upper hinge member, the moving mold upper hinge member, the moving mold lower hinge member and the fixed mold lower hinge member are sequentially hinged end to end;

[0007] Wherein, the fixed mold upper hinge member and the moving mold upper hinge member are connected by a hinge shaft. Both the fixed mold lower hinge member and the moving mold lower hinge member are hinged to a connecting seat. A power unit is installed between the hinge shaft and the connecting seat. By controlling the connecting seat to approach or move away from the hinge shaft through the power unit, the moving mold can be driven to rotate around the hinge shaft to realize the mold clamping and mold opening between the moving mold and the fixed mold.

[0008] Preferably, the power unit includes a screw rod hinged to the hinge shaft and a screw jack fixedly connected to the connecting seat. The screw jack can cooperate with the screw rod to drive the connecting seat to approach or move away from the hinge shaft along the screw rod.

[0009] Preferably, a hinge sleeve is fixedly connected to the end of the screw rod, and the screw rod is hinged to the hinge shaft through the hinge sleeve.

[0010] Preferably, two hinge members on the fixed mold are spaced apart on the fixed mold, and the two hinge members on the fixed mold are respectively hinged to both ends of the hinge shaft;

[0011] Two hinge members under the fixed mold are spaced apart on the fixed mold, and the two hinge members under the fixed mold are respectively hinged to both ends of the connecting seat.

[0012] Preferably, a set of flipping mechanisms is provided between the fixed mold and the movable mold, and the flipping mechanisms are connected to the middle parts of the fixed mold and the movable mold;

[0013] Or at least two sets of flipping mechanisms are spaced apart between the fixed mold and the movable mold.

[0014] Preferably, supporting feet for supporting on the ground are provided at the bottoms of the movable mold and the fixed mold.

[0015] Preferably, a support plate extending towards the movable mold is provided on the fixed mold, the support plate extends towards the movable mold to exceed the axis of the hinge shaft, and the supporting feet on the side of the fixed mold close to the movable mold are installed below the support plate.

[0016] Preferably, a weight unit is provided on the fixed mold, and a weight-reducing groove is provided on the mold body of the movable mold.

[0017] Preferably, a buckle is provided on the fixed mold, and a snap ring capable of being snap-connected with the buckle is provided on the movable mold.

[0018] Applying the technical solution of the present invention, during mold closing, the power unit operates, and the power unit and the connecting seat move towards the direction close to the hinge shaft, thereby enabling the hinge member under the movable mold to support the movable mold, causing the movable mold to rotate along the hinge shaft. As the power unit continues to operate, the movable mold finally flips 180° and then closes with the fixed mold. By controlling the power of the power unit, the flipping speed of the movable mold can be controlled, and the entire flipping and mold closing process is more stable and reliable. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a flipping mechanism for mold closing provided by an embodiment of the present invention in an initial state;

[0020] Figure 2 is a schematic structural diagram of a flipping mechanism for mold closing provided by an embodiment of the present invention in a flipped state;

[0021] Figure 3 is a schematic structural diagram of a flipping mechanism for mold closing provided by an embodiment of the present invention after mold closing is completed;

[0022] Figure 4It is a partially enlarged schematic view of the flipping mechanism for mold clamping provided by an embodiment of the present utility model;

[0023] Among them, 1. Fixed mold; 2. Movable mold; 3. Upper hinge piece on the fixed mold; 4. Upper hinge piece on the movable mold; 5. Lower hinge piece on the fixed mold; 6. Lower hinge piece on the movable mold; 7. Hinge shaft; 8. Connecting seat; 9. Screw jack; 10. Support foot; 11. Screw; 12. Hinge sleeve; 13. Support plate. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Figure 1 It is a schematic structural view of the flipping mechanism for mold clamping provided by an embodiment of the present utility model in the initial state, Figure 2 It is a schematic structural view of the flipping mechanism for mold clamping provided by an embodiment of the present utility model in the flipped state.

[0026] As Figure 1 shown, the flipping mechanism for mold clamping provided by the embodiment of the present utility model includes a fixed mold 1 and a movable mold 2 arranged horizontally side by side in the initial state. An upper hinge piece 3 on the fixed mold is fixedly connected to one side of the fixed mold 1, and an upper hinge piece 4 on the movable mold is fixedly connected to one side of the movable mold 2. It also includes a lower hinge piece 5 on the fixed mold corresponding to the upper hinge piece 3 on the fixed mold, and a lower hinge piece 6 on the movable mold corresponding to the upper hinge piece 4 on the movable mold. The upper hinge piece 3 on the fixed mold, the upper hinge piece 4 on the movable mold, the lower hinge piece 6 on the movable mold, and the lower hinge piece 5 on the fixed mold are sequentially connected end to end to form a quadrilateral with a variable interior angle;

[0027] The upper hinge piece 3 on the fixed mold and the upper hinge piece 4 on the movable mold are hinged through a hinge shaft 7. Both the lower hinge piece 5 on the fixed mold and the lower hinge piece 6 on the movable mold are hinged to the connecting seat 8. A power unit is installed between the hinge shaft 7 and the connecting seat 8. The power unit can drive and control the connecting seat 8 to approach or move away from the hinge shaft 7, thereby driving the movable mold 2 to rotate around the hinge shaft 7 to realize the mold clamping and mold opening between the movable mold 2 and the fixed mold 1.

[0028] In one preferred embodiment, the power unit adopts the cooperation of a screw jack 9 and a screw 11. The screw jack 9 is fixedly installed on the connecting seat 8, and the screw 11 is hinged to the hinge shaft 7. Through the reciprocating movement of the screw jack 9 along the screw 11, the screw jack 9 drives the connecting seat 8 to approach or move away from the hinge shaft 7 to realize mold clamping and mold opening.

[0029] In one preferred embodiment, the power unit includes a motor and a screw rod hinged to the hinge shaft 7. A nut is arranged on the screw rod and is rotatably arranged on the connecting seat 8. By driving the nut to rotate through the motor, the nut and the connecting seat 8 move back and forth along the axial direction of the screw rod, so as to make the connecting seat 8 approach or move away from the hinge shaft 7, thereby realizing mold closing or mold opening.

[0030] As Figure 2 shown, when mold closing is required, the connecting seat 8 and the screw jack 9 move along the screw rod 11 towards the hinge shaft 7, making the angle between the fixed mold lower hinge piece 5 hinged to the connecting seat 8 and the moving mold lower hinge piece 6 larger. Since the fixed mold 1 is fixed, the angle between the fixed mold lower hinge piece 5 and the fixed mold upper hinge piece 3 becomes smaller, causing the screw rod 11, the connecting seat 8, and the screw jack 9 to gradually rotate upward. Furthermore, the moving mold lower hinge piece 6 rotates upward and supports the moving mold 2 to rotate upward. Finally, after the moving mold 2 rotates 180°, the mold closing is completed. The final state after mold closing is as Figure 3 shown.

[0031] In one preferred embodiment, a hinge sleeve 12 is fixedly connected to the end of the screw rod 11, and the screw rod 11 is hinged to the hinge shaft 7 through the hinge sleeve 12, which is more convenient for production, manufacturing, and installation, and improves practicability.

[0032] Through the above settings, the moving mold 2 is initially arranged side by side with the fixed mold 1 on the ground. When mold closing is required, the cooperation between the internal thread block driven by the screw jack 9 and the screw rod 11 supports the flipping of the moving mold 2. By controlling the power of the screw jack 9, that is, controlling the angular velocity of the flipping of the moving mold 2, the entire mold closing process is accurate and stable.

[0033] In addition, the power unit can also adopt other devices that can drive the connecting seat 8 to approach or move away from the hinge shaft 7. For example, a screw rod 11 is hinged to the hinge shaft 7, and a nut cooperating with the screw rod 11 is rotatably arranged on the connecting seat 8. The nut can be specifically installed on the connecting seat 8 through a rotating bearing, etc. A motor capable of driving the nut to rotate is also arranged on the connecting seat 8. By controlling the rotation of the nut through the motor, the connecting seat 8 approaches or moves away from the hinge shaft 7; or a hydraulic jack is adopted. The output end of the hydraulic jack is hinged to the hinge shaft 7, and the body is fixedly installed on the connecting seat 8. By controlling the telescoping of the output end of the hydraulic jack, mold closing and mold opening are realized.

[0034] In one preferred embodiment, two mold upper hinge members 3 are spaced apart on the fixed mold 1. The two mold upper hinge members 3 are respectively hinged to both ends of the hinge shaft 7. The position where the screw 11 is hinged to the hinge shaft 7 is located between the spaces of the two mold upper hinge members 3. Two mold lower hinge members 5 are spaced apart on the fixed mold 1. The two mold lower hinge members 5 are respectively hinged to both ends of the connecting seat 8. By the spaced-apart mold upper hinge members 3, both ends of the part of the hinge shaft 7 that is subjected to the pressure of the screw 11 are supported, and the overall contact area between the mold upper hinge member 3 and the hinge shaft 7 is increased, thereby avoiding stress concentration on the hinge shaft 7 and improving stability. Similarly, by the spaced-apart mold lower hinge members, the support for the connecting seat 8 is also more stable.

[0035] In one preferred embodiment, two movable mold upper hinge members 4 and two movable mold lower hinge members 6 are both spaced apart. The two movable mold upper hinge members 4 are both hinged to the hinge shaft 7, and the two movable mold lower hinge members 6 are both hinged to the connecting seat 8, which can improve the stability of the support of the hinge shaft 7 and the connecting seat 8 for the movable mold.

[0036] In addition, the number of mold upper hinge members 3 can be set to twice the number of movable mold upper hinge members 4. On the hinge shaft 7, both sides of each movable mold upper hinge member 4 are in contact with the mold upper hinge members 3, as Figure 4 shown. In the Figure 4 embodiment shown, four mold upper hinge members 3 are provided, which are respectively located on both sides of the two movable mold upper hinge members 4. Two mold lower hinge members 5 and two movable mold lower hinge members 6 are provided, which can further improve stability. At the same time, the mold upper hinge members 3 on both sides of the movable mold upper hinge member 4 can axially limit the movable mold upper hinge member 4, and can prevent the movable mold 2 from moving along the axis direction of the hinge shaft 7, ensuring that the movable mold 2 only rotates, so as to ensure the stability and accuracy of mold closing.

[0037] Further, a set of flipping mechanisms is provided between the fixed mold 1 and the movable mold 2. When a set of flipping mechanisms is provided, the flipping mechanism is connected to the middle parts of the fixed mold and the movable mold. Multiple sets of flipping mechanisms can also be spaced apart between the fixed mold 1 and the movable mold 2, which can further improve the stability of flipping.

[0038] In one preferred embodiment, support feet 10 are provided below the fixed mold 1 and the movable mold 2. The fixed mold 1 and the movable mold 2 are both supported on the ground by the support feet 10, which can increase the height of the mold closing surface and facilitate operation. On the other hand, when the fixed mold 1 and the movable mold 2 are both in a horizontal state in the initial state, it can provide an installation space for the screw 11 below.

[0039] Further, a support plate 13 extending towards the moving die 2 is provided at the bottom of the hinge member 3 on the fixed die. The support plate 13 extends towards the moving die 2 to exceed the axis of the screw 11. The support feet 10 on the side of the fixed die 1 close to the moving die 2 are installed below the support plate 13. That is, the support feet 10 on this side support at a position exceeding the hinge shaft 7, so that the main stress part, i.e., the hinge shaft 7, during the flipping process always falls within the support range of the support feet 10 below the fixed die 1, improving the stability of the mold during the flipping process. Based on this, a counterweight can also be provided on the fixed die 1, and a weight-reducing groove can be opened on the moving die 2, etc., to reduce the burden on the flipping mechanism and further improve the stability of flipping.

[0040] In one preferred embodiment, a buckle is provided on the fixed die 1, and a snap ring capable of being snap-connected with the buckle is provided on the moving die 2. After the mold closing is completed, the buckle and the snap ring are matched to make the fixed die 1 and the moving die 2 fit together, facilitating subsequent process operations.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A mold turning mechanism, characterized in that: Used to realize the flipping and clamping of the fixed mold and the movable mold, the flipping mechanism includes: A fixed mold upper hinge, wherein the fixed mold upper hinge is fixedly installed on one side of the fixed mold; A movable mold upper hinge, wherein the movable mold upper hinge is fixedly mounted on one side of the movable mold; and a fixed mold lower hinged part arranged corresponding to the fixed mold upper hinged part, and a movable mold lower hinged part arranged corresponding to the movable mold upper hinged part, wherein the fixed mold upper hinged part, the movable mold upper hinged part, the movable mold lower hinged part and the fixed mold lower hinged part are hinged in sequence end to end; Among them, the upper hinge of the fixed mold and the upper hinge of the movable mold are connected through a hinge shaft, the lower hinge of the fixed mold and the lower hinge of the movable mold are both hinged to a connecting seat, and a power unit is installed between the hinge shaft and the connecting seat. The power unit controls the connecting seat to approach or move away from the hinge shaft, and can drive the movable mold to rotate around the hinge shaft to realize the closing and opening of the movable mold and the fixed mold.

2. The mold clamping turning mechanism according to claim 1, characterized in that: The power unit comprises: A screw rod, the screw rod being hinged to the hinge shaft; A screw elevator, the screw elevator is fixedly connected to the connecting seat; The screw lift can cooperate with the screw so that the screw lift drives the connecting seat along the screw to approach or move away from the hinge shaft.

3. The mold-clamping turning mechanism according to claim 2, characterized in that: The end of the screw rod is fixedly connected with a hinge sleeve, and the screw rod is hinged to the hinge shaft through the hinge sleeve.

4. The mold clamping turning mechanism according to claim 1, characterized in that: The power unit comprises: A screw rod, the screw rod being hingedly connected to the hinge shaft; A nut, the nut is matched with the thread of the screw rod, and the nut is rotatably arranged on the connecting seat; and motors; The motor can drive the nut to rotate so that the connecting seat moves closer to or farther away from the hinge shaft along the screw rod.

5. The mold-clamping turning mechanism according to claim 1, characterized in that: The fixed mold upper hinge parts are provided with two hinge parts at intervals on the fixed mold, and the two fixed mold upper hinge parts are respectively hinged to the two ends of the hinge shaft; Two fixed mold lower hinges are arranged on the fixed mold at intervals, and the two fixed mold lower hinges are hinged to the two ends of the connecting seat respectively.

6. The mold-clamping turning mechanism according to claim 1, characterized in that: The flipping mechanism is provided in a group between the fixed mold and the movable mold, and the flipping mechanism connects the middle part of the fixed mold and the movable mold; Or at least two groups of the turnover mechanisms are spaced apart between the fixed mold and the movable mold.

7. The mold-clamping turning mechanism according to claim 6, characterized in that: The bottoms of the movable mold and the fixed mold are provided with supporting feet supported on the ground.

8. The mold-clamping turning mechanism according to claim 7, characterized in that: The fixed mold is provided with a support plate extending toward the movable mold, the support plate extends toward the movable mold to exceed the axis of the hinge shaft, and the support foot of the fixed mold close to the movable mold is installed below the support plate.

9. The mold-clamping turning mechanism according to claim 8, characterized in that: A counterweight unit is arranged on the fixed mold, and a weight-reducing groove is arranged on the mold body on the movable mold.

10. The mold clamping turning mechanism according to claim 1, characterized in that: The fixed mold is provided with a buckle, and the movable mold is provided with a clamping ring capable of being clamped with the buckle.

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