A sequential mold opening locking mechanism and a sequential mold opening injection mold

Abstract

The present invention provides a sequential mold opening locking mechanism and a sequential mold opening injection mold, including a locking machine base, a locking machine block, a locking machine lever and a locking machine hook. The locking machine block is movably installed on the locking machine base so as to have a locking position locked on the locking machine hook and a releasing position releasing the locking machine hook; the direction of the locking machine block from the releasing position to the locking position is defined as the locking direction; the locking machine base is provided with a lever groove, the locking machine lever is inserted into the lever groove, and the locking machine lever is also provided with a resistance part for fixing the locking machine block in the locking position; the end of the locking machine lever is also bent away from the locking direction to form an elbow structure. The locking machine block is fixed in the locking position by the resistance part of the locking machine lever, and in the process of mold opening, the elbow structure at the end realizes the release of the locking machine block, that is, unlocking is realized. The locking state of this locking mechanism has no movement gap, which solves the problem of poor stability and easy running failure of the existing locking mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of mold manufacturing, and specifically relates to a sequential mold opening locking mechanism and a sequential mold opening injection mold. Background Art

[0002] Some mold opening actions of injection molds often require the control of mold opening sequence to achieve fixed-sequence multi-stage mold opening. This type of structural mold often uses nylon rubber plug buckle to bring out the movable plate, but because the nylon buckle: is easily deformed in a high temperature environment, resulting in abnormal mold closing; the nylon rubber plug buckle has insufficient clamping force, which often leads to the wrong mold opening sequence and causes the product to stick to the mold. Therefore, it is often replaced by some mechanical sequential mold opening buckle machines.

[0003] However, conventional latching machines generally include a spring-driven normally closed locking device, and in order to achieve unlocking drive, the latching block of the locking device has room for movement, which can easily cause it to fail and fail to latch the mold.

[0004] Therefore, there is an urgent need for a sequential mold opening locking mechanism with a stable and controllable mold opening sequence. Summary of the invention

[0005] The present invention aims to provide a sequential mold opening locking mechanism to solve the problem that the locking mechanism has poor stability and is prone to running and failure.

[0006] The specific scheme is as follows: A sequential mold opening locking mechanism comprises a locking base, a locking block, a locking lever and a locking hook, wherein the locking block is movably mounted on the locking base so as to have a locking position for locking on the locking hook and a releasing position for releasing the locking hook;

[0007] The locking direction is defined as the direction from the release position to the locking position of the trigger block; a lever groove is provided on the trigger base, the trigger lever is inserted into the lever groove, and the trigger lever is also provided with a resistance portion for fixing the trigger block in the locking position; the end of the trigger lever is also bent away from the locking direction to form an elbow structure.

[0008] A further technical solution of the present invention is: the fixed end of the trigger lever is defined as the upper end, the abutment portion is a side surface of the trigger lever facing the locking direction, and the elbow structure is connected to the lower part of the abutment portion. A further technical solution of the present invention is: the trigger block is provided with a first through slot, the trigger lever is inserted into the first through slot; and the end of the elbow structure is further provided with an unlocking abutment portion protruding away from the locking direction.

[0009] A further technical solution of the present invention is: an inclined guiding slope is provided between the bottom end of the elbow structure and the abutment portion;

[0010] The width between the unlocking abutting portion and the abutting portion is adapted to the width of the lever slot, and the guide slope abuts against the position of the latch block, and the unlocking abutting portion abuts against the wall surface of the lever slot.

[0011] A further technical solution of the present invention is: a second through slot is provided on the latch block, the latch hook is inserted into the second through slot and protrudes out of the latch block, and a barb portion for hooking on the latch block is provided at the end of the latch hook.

[0012] A further technical solution of the present invention is: a reset member is also provided on the latch base, and the reset member is arranged at a position to apply a force in a direction away from the locking direction to the latch block.

[0013] A further technical solution of the present invention is that the reset member is an elastic member, one end of which abuts against the latch block and the other end abuts against the latch seat, thereby applying a force to the latch block to move it from the locked position toward the released position.

[0014] The present invention also provides a sequential mold opening injection mold, which includes, from top to bottom, an A plate, a movable push plate and a B plate, and also includes the above-mentioned sequential mold opening locking mechanism; the lock machine lever is fixed on the A plate, and the lock machine hook is fixed on the movable push plate; the lock machine block is movably installed on the lock machine base, and the lock machine base is fixed on the B plate; the lock machine lever and the lock machine hook are both inserted on the lock machine base, and in the mold closing state, the lock machine lever abuts against the lock machine block to fix the lock machine block in the locking position.

[0015] Beneficial effects: The sequential mold opening locking mechanism and the sequential mold opening injection mold of the present invention include a locking machine base, a locking machine block, a locking machine lever and a locking machine hook. The locking machine block is movably installed on the locking machine base so as to have a locking position locked on the locking machine hook and a releasing position releasing the locking machine hook; the direction of the locking machine block from the releasing position to the locking position is defined as the locking direction; the locking machine base is provided with a lever groove, the locking machine lever is inserted into the lever groove, and the locking machine lever is also provided with a resistance part for fixing the locking machine block in the locking position; the end of the locking machine lever is also bent away from the locking direction to form an elbow structure. The locking machine block is fixed in the locking position by the resistance part of the locking machine lever, and in the process of mold opening, the elbow structure at the end realizes the release of the locking machine block, that is, unlocking is realized. There is no movement gap in the locked state of this locking mechanism, which solves the problem of poor stability and easy running failure of the existing locking mechanism.

[0016] At the same time, the elbow structure also drives the locking block in the unlocking direction during the mold opening process, that is, the movement of the locking block is driven by the locking lever. The elbow structure leaves the locking block with no room for movement, firmly locks the mold, and stabilizes the mold opening movement, further improving the mold opening stability effect.

[0017] In the sequential mold opening injection mold, since the movable push plate is mounted on the B plate and locked by the locking mechanism, in order to realize the sequential mold opening of the movable push plate, it is required to realize the mold opening and disengagement of the movable push plate after the trigger lever is unlocked. However, in actual operation, the movable push plate is opened too late, resulting in mold opening failure. At this time, the trigger lever is disengaged, and the movable push plate is locked again, and the mold opening cannot be realized. The locking mechanism of the present invention is in an unlocked state after the trigger lever is disengaged, ensuring that the movable push plate has sufficient response time. The movable push plate can open the mold at any time according to the needs of the mold, further improving the flexibility of mold design and the stability of production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A partial cross-sectional view of a sequential mold opening injection mold in a mold closing state according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the structure of a sequential mold opening locking mechanism on a sequential mold opening injection mold according to an embodiment of the present invention is shown;

[0020] Figure 3 A partial cross-sectional view of the sequential mold opening process of an injection mold according to an embodiment of the present invention is shown;

[0021] Figure 4 It shows a partial cross-sectional view of the sequential mold opening injection mold in the first step of the mold opening completion state according to the embodiment of the present invention;

[0022] Figure 5 Shows Figure 4 A partial enlarged view of point A in the figure. DETAILED DESCRIPTION

[0023] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0025] Combination Figure 1 and Figure 2 As shown, this embodiment provides a sequential mold opening injection mold, defining one end of the fixed mold plate as the upper end, which includes an A plate 10, a movable push plate 30 and a B plate 20 from top to bottom.

[0026] In order to realize that the A plate 10 and the movable push plate 30 are opened first, and then the movable push plate 30 and the B plate 20 are opened, the sequential mold opening injection mold also includes a sequential mold opening locking mechanism.

[0027] In this embodiment, the sequential mold opening and locking mechanism includes a latch base 3, a latch block 4, a latch lever 1 and a latch hook 2, wherein the latch lever 1 is fixed on the A plate 10 and extends downward; the latch hook 2 is fixed on the movable push plate 30 and extends downward; the latch base 3 is fixed on the B plate 20, and a horizontal slide groove is provided in the latch base 3, and the latch block 4 is movably mounted on the latch base 3 and can slide horizontally.

[0028] A lever groove and a hook groove are vertically provided on the latch base, and the lower ends of the latch lever 1 and the latch hook 2 are respectively inserted into the latch base 3 through the lever groove and the hook groove; correspondingly, a first through groove and a second through groove are respectively provided at the positions corresponding to the latch lever 1 and the latch hook 2 on the latch block 4, the latch lever 1 is inserted into the first through groove and passes through the latch block 4, the latch hook 2 is inserted into the second through groove and protrudes out of the latch block 4, and at the same time, a barb portion is laterally protruded from the end of the latch hook 2 for hooking on the latch block 4 to achieve the locking of the movable push plate 30 and the B plate 20.

[0029] The latch block 4 is installed in a horizontal slide groove in the latch base 3, and then movably installed on the latch base 3, so that it has a locking position that abuts against the hook portion of the latch hook 2 and then locks on the latch hook, and a release position that moves laterally to disengage from the hook portion and releases the latch hook 2.

[0030] In this embodiment, the working principle of the latch block 4 locking or releasing the latch hook is as follows:

[0031] The direction of the latch block 4 from the release position to the locking position is defined as the locking direction, and the opposite direction is defined as the unlocking direction;

[0032] In the mold closing state, the latch lever 1 is inserted into the lever groove, that is, it passes through the latch base 3 and the latch block 4 at the same time. The latch lever 1 is also provided with a resistance part for fixing the latch block in the locking position. Preferably, the resistance part is a side surface of the latch lever 1 facing the locking direction, and its surface contacts and resists on the latch block 4 to fix the latch block 4 in the locking position. The barb structure of the latch hook 2 is hooked on the latch block 4 to achieve locking.

[0033] The trigger lever 1 is fixed on the side of the A plate 10, and the fixed end of the trigger lever 1 is defined as the upper end. In order to unlock the trigger block 4, the lower end of the trigger lever, that is, the tip, is also bent away from the locking direction to form an elbow structure 11. In this embodiment, the elbow structure 11 is connected to the lower position of the interference portion to realize the demolding process. The trigger block 4 is moved in the unlocking direction by the elbow structure 11 to move it from the locked position to the released position to achieve unlocking.

[0034] In combination Figure 1 , Figure 3-Figure 5 As shown, the sequential mold opening process of this embodiment is as follows.

[0035] exist Figure 1 In the mold closing state, the abutment portion of the latch lever 1 and the two side walls of the elbow structure 11 respectively abut against the first through groove on the latch block 4, so that the latch block 4 is positioned by the latch lever 1, ensuring zero activity space of the latch block 4 and achieving stable locking.

[0036] exist Figure 3 In the initial mold opening state, the elbow structure 11 of the trigger lever 1 pushes the trigger block 4 in the unlocking direction to achieve unlocking and move the trigger block 4 to the unlocking position; at the same time, the end of the elbow structure 11 is also provided with an unlocking resistance part 111 protruding away from the locking direction, and the width between the unlocking resistance part 111 and the resistance part is adapted to the width of the lever groove on the trigger base 3, ensuring that the resistance part on the trigger lever 1 is in contact with the lever groove during the unlocking process, thereby achieving stable support for the unlocking resistance part 111, achieving strong unlocking and mold opening, and avoiding deformation and other problems that lead to unlocking failure and other malfunctions.

[0037] At the same time, during the mold closing process, the unlocking abutment 111 can also abut against the wall of the lever groove to achieve support for the abutment, and drive the locking block 4 to stably move to the locking position. An inclined guide slope is provided between the bottom end of the elbow structure 11 and the abutment to achieve push guidance for the locking block 4 during mold closing; at the same time, and at the position where the guide slope abuts against the locking block, the unlocking abutment 111 abuts against the wall of the lever groove to achieve stable support for the guide slope.

[0038] Recombination Figure 4 and Figure 5 As shown, after the initial mold opening is completed and then in the further mold opening process, the sequential mold opening locking mechanism has the following essential differences from the traditional locking mechanism: after the latch lever 1 is separated from the latch block 4, the latch block 4 is in the unlocked position, that is, the movable push plate 30 can open the mold at any time, which greatly improves the mold operation stability compared with the traditional normally closed locking mechanism.

[0039] At the same time, in order to ensure the stable position of the latch block 4, a reset member 5 is also provided on the latch base. The reset member 5 is arranged at a position to apply a force in a direction away from the locking direction to the latch block 4 so as to fix the latch block 4 in the unlocking position after the mold is opened.

[0040] In this embodiment, the reset member 5 is preferably a compression spring, which is reversely installed, that is, one end abuts against the latch block 4, and the other end abuts against the latch base 3, and is arranged to apply a force to the latch block 4 to move it from the locked position to the released position, ensuring that the latch block 4 does not retreat under the action of the spring, while leaving room for movement for the latch block 4, and the movable push plate 30 can be moved at any time according to the needs of the mold.

[0041] Of course, in other specific embodiments, the unlocking action can also be achieved by the reset member 5, that is, a compression spring, or the reset member 5 can also be implemented in other ways, such as gravity self-hanging, elastic snap-on structure, cylinder or electromagnet, etc., as long as the buckle block 4 can be fixed in the unlocked position.

[0042] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A sequential mold opening locking mechanism, comprising a locking base, a locking block, a locking lever and a locking hook, wherein the locking block is movably mounted on the locking base so as to have a locking position for locking on the locking hook and a releasing position for releasing the locking hook; Features: Define the direction of the latch block from the release position to the locking position as the locking direction; The trigger base is provided with a lever groove, the trigger lever is inserted into the lever groove, and the trigger lever is also provided with a resistance part for fixing the trigger block in a locking position; The end of the trigger lever is also bent away from the locking direction to form an elbow structure; The fixed end of the trigger lever is defined as the upper end, the abutment portion is a side surface of the trigger lever facing the locking direction, and the elbow structure is connected to the lower part of the abutment portion; In the mold closing state, the abutment portion of the locking lever and the two side walls of the elbow structure respectively abut against the first through groove on the locking block, so that the locking lever can realize the positioning of the locking block; The end of the elbow structure is also provided with an unlocking abutment portion protruding away from the locking direction, and the width between the unlocking abutment portion and the abutment portion is adapted to the width of the lever groove on the locking base; The latch base is also provided with a reset member, which is arranged at a position to apply a force in a direction away from the locking direction to the latch block; the reset member is an elastic member, one end of which abuts against the latch block and the other end abuts against the latch base, thereby applying a force to the latch block to move it from the locking position toward the releasing position.

2. The sequential mold opening and locking mechanism according to claim 1, characterized in that: The trigger block is provided with a first through slot, and the trigger lever is inserted into the first through slot.

3. The sequential mold opening and locking mechanism according to claim 2, characterized in that: An inclined guiding slope is arranged between the bottom end of the elbow structure and the abutment portion; and when the guiding slope abuts against the position of the locking block, the unlocking abutment portion abuts against the wall surface of the lever groove.

4. The sequential mold opening and locking mechanism according to claim 1, characterized in that: The latch block is provided with a second through slot, the latch hook is inserted into the second through slot and protrudes out of the latch block, and the end of the latch hook is provided with a barb portion for hooking on the latch block.

5. A sequential mold opening injection mold, characterized in that: It includes, from top to bottom, plate A, a movable push plate and plate B, and is characterized in that it also includes the sequential mold opening and locking mechanism described in any one of claims 1 to 4; the lock machine lever is fixed on the A plate, and the lock machine hook is fixed on the movable push plate; the lock machine block is movably mounted on the lock machine base, and the lock machine base is fixed on the B plate; the lock machine lever and the lock machine hook are both inserted on the lock machine base, and in the mold closing state, the lock machine lever contacts the lock machine block to fix the lock machine block in the locked position.

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