Die unloading mechanism

Abstract

The utility model discloses a mold discharging mechanism, belongs to the technical field of mold equipment, and provides a discharging mechanism which is simpler in structure and can also generate large demolding force. The mold discharging mechanism comprises a driving disc rotationally connected with a mold base and an isolation plate fixedly connected with the mold base, and a sinking groove is formed in the end face, opposite to the isolation plate, of the driving disc; the inner bottom face of the sinking groove is in smooth transition to the end face, opposite to the isolation plate, of the driving disc through an inclined face, a discharging rod is arranged between the isolation plate and the driving disc, one end of the discharging rod penetrates through the isolation plate, the other end of the discharging rod abuts against the driving disc, and a limiting ring is arranged on the outer side face of the discharging rod. And a return spring is arranged between the limiting ring and the isolation plate. According to the discharging mechanism, the driving disc structure with the regularly fluctuating upper end face is designed, so that the discharging rod can obtain larger pushing force along the inclined face, and the discharging mechanism is simple in structure, low in configuration cost and capable of pushing away formed parts with large discharging resistance.

Description

Technical Field

[0001] The present application relates to the technical field of mold equipment, and in particular to a mold unloading mechanism. Background Art

[0002] The unloading mechanism is one of the common components in the mold. It can push the molded part away from the mold cavity after the material in the mold is cooled and formed. There are many driving methods for the existing unloading mechanism. For molded parts with relatively small demoulding resistance, the unloading mechanism can be set up in a linkage with the movable mold; and for molded parts with relatively large demoulding resistance, a separate drive such as pneumatic or hydraulic is usually set. However, the use of pneumatic or hydraulic unloading mechanisms will not only generate additional energy consumption, but also increase the use and maintenance costs of the supporting control valve structure. Summary of the invention

[0003] The purpose of the present application is to provide a discharge mechanism with a simpler structure and capable of generating a larger demoulding force.

[0004] To achieve the above objectives, the present application provides a mold unloading mechanism: comprising a driving disk rotatably connected to the mold base, and an isolation plate fixedly connected to the mold base, a recessed groove is provided on the end surface of the driving disk facing the isolation plate, and the inner bottom surface of the recessed groove smoothly transitions to the end surface of the driving disk facing the isolation plate through an inclined surface, a unloading rod is arranged between the isolation plate and the driving disk, one end of the unloading rod passes through the isolation plate, and the other end supports the driving disk, a limiting ring is provided on the outer side of the unloading rod, and a return spring is arranged between the limiting ring and the isolation plate for keeping the unloading rod in contact with the driving disk at all times.

[0005] As a preferred embodiment, there are several groups of combinations of the sink grooves and the inclined surfaces, and the several groups of the sink grooves and the inclined surfaces are arranged equidistantly around the axis of the driving disk to ensure uniform distribution of the mass of the driving disk.

[0006] As a preferred embodiment, the return spring is sleeved outside the unloading rod, the number of the unloading rod and return spring combinations corresponds to the number of the sink grooves, and several groups of the unloading rod and return springs are equidistantly arranged around the axis of the driving disk, corresponding to the sink groove and inclined surface combinations.

[0007] As a preference, the end of the unloading rod located below the limiting ring is a sliding end, suitable for directly contacting the end face, the groove or the inclined surface of the driving disk. Different contact surfaces will allow the unloading rod to have different heights.

[0008] As a preference, the height difference between the bottom surface of the limiting ring and the bottom surface of the sliding end is greater than the depth of the sink groove, thereby ensuring that the sliding end can contact the sink groove.

[0009] Preferably, the end face of the driving disk facing away from the isolation plate has a coaxial linkage shaft suitable for cooperating with the mold base to form a rotating pair. The outer side surface of the linkage shaft is provided with a key groove for embedding a flat key structure, thereby linking with the servo motor outside the mold base.

[0010] As a preferred embodiment, the isolation plate is provided with a guide hole passing through the upper and lower end surfaces, suitable for cooperating with the unloading rod to form a sliding pair, and the isolation plate is provided with a limiting hole at the lower end of the guide hole, suitable for accommodating the upper end of the return spring, thereby further improving the configuration stability of the return spring.

[0011] Preferably, the isolation plate is further provided with a connecting hole penetrating the upper and lower end surfaces, and the connecting hole is located at the corner of the isolation plate to avoid interference between the connecting parts fixing the isolation plate and the components in the central part of the isolation plate.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By designing a driving disk structure with regular undulations on the upper end surface, the unloading rod can obtain a greater thrust along the inclined surface. The unloading mechanism has a simple structure and low configuration cost, but can push away the molded parts with large unloading resistance;

[0014] (2) The design has good structural stability, simple control method and low failure rate, thus effectively reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the assembly structure of the mold unloading mechanism;

[0016] Figure 2 A first schematic diagram of the three-dimensional structure of the driving disk of the mold unloading mechanism;

[0017] Figure 3 A second schematic diagram of the three-dimensional structure of the driving disk of the mold unloading mechanism;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the cooperation between the return spring and the discharge rod of the mold discharge mechanism;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of a discharge rod of the mold discharge mechanism;

[0020] Figure 6 It is a three-dimensional structural cross-sectional view of the mold base of the mold unloading mechanism.

[0021] In the figure: 1, isolation plate; 101, guide hole; 102, limit hole; 103, connecting hole; 2, driving plate; 201, linkage shaft; 202, keyway; 203, sink groove; 204, inclined surface; 3, return spring; 4, unloading rod; 401, sliding end; 402, limit ring. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0026] like Figure 1-6The mold unloading mechanism shown includes a driving disk 2 rotatably connected to the mold base, and the driving disk 2 realizes unloading by rotation. The unloading mechanism also includes an isolation plate 1 fixedly connected to the mold base, and the relative distance between the isolation plate 1 and the driving disk 2 is constant. The isolation plate 1 is also provided with a connecting hole 103 that passes through the upper and lower end surfaces, for bolts and other connecting parts to pass through and fix the isolation plate 1 on the mold base. The connecting hole 103 is located at the corner of the isolation plate 1, which can well avoid interference with the structure of the middle part of the isolation plate 1. The end surface of the driving disk 2 facing away from the isolation plate 1 has a coaxial linkage shaft 201, which is used to cooperate with the mold base to form a rotating pair. Corresponding configuration grooves and through-hole structures will be pre-opened on the mold base, and a key groove 202 will be opened on the outer side surface of the linkage shaft 201. The part of the linkage shaft 201 with the key groove 202 will pass through the mold base and be linked with the output end of the servo motor outside the mold base through a coupling.

[0027] A sink groove 203 is provided on the end surface of the driving disk 2 facing the isolation plate 1. The inner bottom surface of the sink groove 203 is parallel to the end surface of the driving disk 2. The inner bottom surface of the sink groove 203 smoothly transitions to the end surface of the driving disk 2 facing the isolation plate 1 through the inclined surface 204. The inclined surface 204 is one side wall of the sink groove 203. The other side wall of the inclined surface 204 is perpendicular to the inner bottom surface of the inclined surface 204. There are several groups of combinations of the sink groove 203 and the inclined surface 204. In this embodiment, four groups are provided. The four groups of sink grooves 203 and inclined surfaces 204 are equidistantly arranged around the axis of the driving disk 2. In this way, the center of mass of the entire driving disk 2 can be located on its own axis, which is conducive to ensuring rotation stability.

[0028] A discharge rod 4 is arranged between the isolation plate 1 and the driving disk 2, which is the main component for realizing discharge. One end of the discharge rod 4 passes through the isolation plate 1, so that the discharge rod 4 can push away the molded part on the upper end surface of the isolation plate 1. The isolation plate 1 is provided with a guide hole 101 that passes through the upper and lower end surfaces, which is used to cooperate with the discharge rod 4 to form a sliding pair. The other end of the discharge rod 4 will support the driving disk 2, and the end of the discharge rod 4 facing the driving disk 2 is the sliding end 401. There is a limit ring 402 on the outer surface of the discharge rod 4, and the end of the discharge rod 4 located below the limit ring 402 is the sliding end 401. The height difference between the bottom surface of the limit ring 402 and the bottom surface of the sliding end 401 is greater than the depth of the sink groove 203. Therefore, the bottom surface of the sliding end 401 can directly contact with any one of the end surface of the driving disk 2, the sink groove 203 and the inclined surface 204. When the sliding end 401 contacts different contact surfaces, the insertion depth or protruding height relative to the isolation plate 1 will be different.

[0029] A return spring 3 is arranged between the limit ring 402 and the isolation plate 1 to ensure that the bottom surface of the sliding end 401 is always in contact with the driving disk 2. The return spring 3 is sleeved on the outside of the unloading rod 4, which can well ensure the stability of the return spring 3. The isolation plate 1 has a limit hole 102 at the lower end of the guide hole 101 to accommodate the upper end of the return spring 3, which can ensure the stability of the end of the return spring 3. The number of combinations of unloading rods 4 and return springs 3 corresponds to the number of sink grooves 203. Several groups of unloading rods 4 and return springs 3 are equidistantly arranged around the axis of the driving disk 2, that is, the contact surface type of the bottom of these sliding ends 401 is the same. Under the driving action of the driving disk 2, the four unloading rods 4 are consistent in the plug-in state or protruding height relative to the isolation plate 1, which is beneficial to apply uniform thrust to the molded part.

[0030] Working principle: In the non-discharging state, the sliding end 401 will sink into the sinking groove 203 of the driving disk 2 and contact the inner bottom surface of the sinking groove 203. The upper end of the discharge rod 4 is either flush with the upper surface of the isolation plate 1 or slightly protrudes from the upper surface of the isolation plate 1. When the material in the mold is cooled and formed, the driving disk 2 will rotate counterclockwise in the top view direction driven by the servo motor outside the mold base, so that the sliding end 401 in the unchanged position will slide to the inclined surface 204, and the discharge rod 4 will overcome the elastic force of the return spring 3 to The upper end of the discharge rod 4 will slide upward, so that the upper end of the discharge rod 4 will protrude more and more from the upper surface of the isolation plate 1, and the molded part released from the isolation plate 1 will be pushed open, thereby realizing the discharge function. After the discharge is completed, the sliding end 401 will fall into the next trough 203 again. In order to ensure that the discharge rod 4 is at the initial height, the driving disk 2 will usually rotate in the opposite direction to make the side surface of the sliding end 401 contact with the vertical inner wall of the trough 203. At this time, the bottom surface of the sliding end 401 will definitely contact with the inner bottom surface of the trough 203.

[0031] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A mold unloading mechanism, characterized in that: The invention comprises a driving disk (2) rotatably connected to a die base, and an isolation plate (1) fixedly connected to the die base, wherein a recessed groove (203) is provided on the end surface of the driving disk (2) facing the isolation plate (1), and the inner bottom surface of the recessed groove (203) smoothly transitions to the end surface of the driving disk (2) facing the isolation plate (1) through an inclined surface (204), and a discharge rod (4) is provided between the isolation plate (1) and the driving disk (2), one end of the discharge rod (4) passes through the isolation plate (1), and the other end supports the driving disk (2), and a limit ring (402) is provided on the outer side of the discharge rod (4), and a return spring (3) is provided between the limit ring (402) and the isolation plate (1).

2. The mold unloading mechanism according to claim 1, characterized in that: There are several groups of combinations of the sink grooves (203) and the inclined surfaces (204), and the several groups of sink grooves (203) and inclined surfaces (204) are arranged at equal distances around the axis of the driving disk (2).

3. The mold unloading mechanism according to claim 2, characterized in that: The return spring (3) is sleeved outside the discharge rod (4), the number of the discharge rod (4) and the return spring (3) combination corresponds to the number of the sink grooves (203), and a plurality of groups of the discharge rod (4) and the return spring (3) are equidistantly arranged around the axis of the drive disk (2).

4. The mold unloading mechanism according to claim 3, characterized in that: One end of the discharge rod (4) located below the limiting ring (402) is a sliding end (401), which is suitable for directly contacting the end surface, the sink groove (203) or the inclined surface (204) of the driving disc (2).

5. The mold unloading mechanism according to claim 4, characterized in that: The height difference between the bottom surface of the limiting ring (402) and the bottom surface of the sliding end (401) is greater than the depth of the sink groove (203).

6. The mold unloading mechanism according to any one of claims 1 to 5, characterized in that: The end surface of the driving disc (2) facing away from the isolation plate (1) has a coaxial linkage shaft (201) suitable for cooperating with the die base to form a rotating pair, and the outer side surface of the linkage shaft (201) is provided with a keyway (202).

7. The mold unloading mechanism according to claim 6, characterized in that: The isolation plate (1) is provided with a guide hole (101) penetrating the upper and lower end surfaces, suitable for cooperating with the discharge rod (4) to form a sliding pair. The isolation plate (1) is provided with a limiting hole (102) at the lower end of the guide hole (101), suitable for accommodating the upper end of the return spring (3).

8. The mold unloading mechanism according to claim 7, characterized in that: The isolation plate (1) is also provided with a connection hole (103) penetrating the upper and lower end surfaces, and the connection hole (103) is located at a corner of the isolation plate (1).

Images