Insert inward shrinkage avoiding type sliding block demolding mechanism

Abstract

The utility model relates to the technical field of dies. An insert inward shrinkage avoiding type sliding block demolding mechanism comprises a sliding block assembly, an inclined guide column and a shovel base, the inclined guide column and the shovel base synchronously ascend and descend, and the sliding block assembly comprises a sliding block base, a dovetail transmission block, an insert transmission piece, a main insert and two sub-inserts arranged in a mirror symmetry mode; the main insert is detachably mounted at the front end of the sliding block seat; the main insert is provided with a sub-insert moving cavity, the sliding block seat is provided with a transmission piece moving cavity, and the insert transmission piece is provided with a guide hole used for being connected with the inclined guide column in a sliding mode; a dovetail groove longitudinally connected with the dovetail transmission block in a sliding manner is formed in the front end of the insert transmission piece; the left side and the right side of the dovetail transmission block are provided with guide bulges in sliding connection with the sub-insert, and the distance between the guide bulges on the left side and the right side of the dovetail transmission block is gradually increased from front to back; and forming grooves for forming the protruding structures are formed in the far sides of the two sub-inserts. By optimizing the structure of the sliding block assembly, synchronous avoiding demolding of the forming protrusions oppositely arranged on the product is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a slider mechanism. Background Art

[0002] The injection mold uses a slider as part of the product cavity, and the demoulding action is achieved through the movement of the slider.

[0003] With the diversification of current product structures, when designing the mold, in order to prevent the existence of undercuts in the mold opening direction, it is necessary to design a slider demoulding mechanism to guide the slider movement to remove the undercut during the movement of the guide column.

[0004] When an injection molded workpiece is provided with an undercut structure having two protrusions disposed opposite to each other, there is currently a lack of a slider demoulding mechanism that can achieve synchronous disengagement of the protrusions disposed opposite to each other. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides an insert retracting avoidance type slider demoulding mechanism, which has solved at least one of the above technical problems.

[0006] The technical solution of the utility model is: an insert retracting avoidance type slider demoulding mechanism, comprising a slider assembly, a synchronously lifted inclined guide column and a shovel base, characterized in that the slider assembly comprises a slider seat, a dovetail transmission block, an insert transmission part, a main insert and two sub-inserts arranged in mirror symmetry;

[0007] The main insert is detachably mounted on the front end of the slider seat;

[0008] The main insert is provided with a sub-insert movable cavity for the sub-insert to slide left and right, the slider seat is provided with a transmission member movable cavity for the insert transmission member to slide forward and backward, and the sub-insert movable cavity is connected with the transmission member movable cavity;

[0009] The insert transmission member is provided with a guide hole for slidingly connecting the inclined guide column;

[0010] The front end of the insert transmission member is provided with a dovetail groove for longitudinally slidingly connecting the dovetail transmission block;

[0011] The left and right sides of the dovetail transmission block are provided with guide protrusions slidably connected to the sub-insert, and the spacing between the guide protrusions on the left and right sides of the dovetail transmission block increases from front to back;

[0012] The two sub-inserts are provided with molding grooves for molding the protrusion structure on the far side thereof;

[0013] The slider seat is provided with a transmission hole for inserting the oblique guide column, the cross section of the transmission hole is oval, and the transmission hole is butted and connected with the guide hole.

[0014] The utility model optimizes the structure of the slider assembly to facilitate synchronous avoidance and demoulding of the relatively arranged forming protrusions on the product.

[0015] During the upward movement of the guide column and the shovel base, the insert transmission part retreats, driving the inward movement of the two mirror-symmetrically arranged sub-inserts, thereby achieving the mutual separation of the two relatively arranged undercuts and the sub-inserts on the workpiece. During the continued rise of the guide column, the slider seat and the main insert are driven to retreat synchronously.

[0016] Further preferably, a ball screw is threadedly connected to the slider seat;

[0017] The bottom of the insert transmission part is provided with spherical limiting grooves arranged front and back for clamping the positioning beads of the ball screw.

[0018] Easy to position with ball-end screws.

[0019] Further preferably, the bottom of the slider seat is provided with strip-shaped notches arranged front and back, and the strip-shaped notches are in a V-shape with the opening facing downward;

[0020] It also includes a fixed limiting member, on which a strip-shaped limiting protrusion matching the strip-shaped notch is provided.

[0021] It is convenient to realize the pre-positioning of the slider seat. It prevents the slider seat from being positioned at the original position when the guide column guides the sub-insert to retract and slide once. When the guide column contacts the transmission hole on the slider seat, it pushes the slider seat to slide, and then the limiter is switched and clamped into the strip-shaped gaps set in the front and back.

[0022] Further preferably, the limiting member is detachably mounted on a base, and a limiting screw is detachably connected to the base;

[0023] The limit screw is used to abut against the slider seat.

[0024] It is convenient to realize the sliding limit of the slider seat.

[0025] Further preferably, the sub-insert is provided with strip-shaped protrusions with a length direction of left and right;

[0026] The sub-insert active cavity is provided with a strip-shaped sliding groove which is slidably connected with the strip-shaped protrusion.

[0027] Further preferably, the cross-section of the guide protrusion is an isosceles trapezoid.

[0028] Beneficial effects: The utility model realizes synchronous demoulding of relatively arranged forming blocks on a workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a structural schematic diagram of a specific embodiment 1 of the utility model;

[0030] Figure 2 It is a structural schematic diagram of another viewing angle of the specific embodiment 1 of the utility model;

[0031] Figure 3 A structural schematic diagram of a workpiece of a specific embodiment 1 of the utility model;

[0032] Figure 4 This is an exploded view of the slider seat and the main insert of the specific embodiment 1 of the utility model;

[0033] Figure 5 It is a partial structural schematic diagram of a specific embodiment 1 of the utility model;

[0034] Figure 6 It is a partial structural schematic diagram of a specific embodiment 1 of the utility model;

[0035] Figure 7 It is a partial structural schematic diagram of a specific embodiment 1 of the utility model;

[0036] Figure 8 It is a partial exploded view of specific embodiment 1 of the utility model.

[0037] In the figure: 1 is an inclined guide column, 2 is a shovel base, 3 is a slider seat, 4 is an insert transmission part, 5 is a main insert, 6 is a sub-insert, 7 is a ball screw, 8 is a limit part, 9 is a limit screw, 10 is a dovetail transmission block, 11 is a workpiece, and 12 is a formed protrusion structure. DETAILED DESCRIPTION

[0038] See also Figures 1 to 8, Specific embodiment 1, the insert retracting avoidance type slider demoulding mechanism, including a slider assembly, a synchronously lifting inclined guide column 1 and a shovel base 2, the slider assembly includes a slider seat 3, a dovetail transmission block 10, an insert transmission member 4, a main insert 5 and two sub-inserts 6 arranged in mirror symmetry; the main insert 5 is detachably installed at the front end of the slider seat 3; the main insert 5 is provided with a sub-insert active cavity for the sub-insert 6 to slide left and right, and the slider seat 3 is provided with a transmission member active cavity for the insert transmission member to slide forward and backward, and the sub-insert active cavity is connected with the transmission member active cavity; the insert transmission member The insert transmission member 4 is provided with a guide hole for slidingly connecting the inclined guide column 1; the front end of the insert transmission member 4 is provided with a dovetail groove for longitudinally slidingly connecting the dovetail transmission block 10; the left and right sides of the dovetail transmission block 10 are provided with guide protrusions that are slidably connected to the sub-insert 6, and the spacing between the guide protrusions on the left and right sides of the dovetail transmission block 10 increases from front to back; the two sub-inserts 6 are provided with a molding groove for forming a protrusion structure on the far side; the slider seat 3 is provided with a transmission hole for inserting the inclined guide column 1, the cross section of the transmission hole is oval, and the transmission hole is connected with the guide hole. The utility model optimizes the structure of the slider assembly to facilitate the synchronous avoidance and demoulding of the relatively arranged molding protrusions on the product. During the upward movement of the guide column and the shovel base 2, the insert transmission member retreats, driving the inward movement of the two mirror-symmetrically arranged sub-inserts, thereby realizing the mutual separation of the two relatively arranged molding protrusion structures 12 on the workpiece 11 and the molding grooves of the sub-inserts, and the guide column continues to rise, driving the slider seat 3 and the main insert 5 to retreat synchronously.

[0039] The slider seat is provided with a columnar protrusion protruding forward, and the main insert is provided with a positioning slot matching the columnar protrusion, so as to improve the alignment of the slider seat and the main insert.

[0040] The transmission hole is arranged downwardly and tilted from front to back. The slider seat is provided with transmission holes arranged up and down, and the transmission hole is connected with the active cavity of the transmission member. The transmission hole is used for the exposed oblique guide column.

[0041] The rear end of the sub-insert moving cavity is open, and the dovetail transmission block slides back and forth in the sub-insert moving cavity.

[0042] The slider seat 3 is threadedly connected with a ball screw 7; the bottom of the insert transmission member 4 is provided with spherical limit grooves for clamping the positioning beads of the ball screw 7. It is convenient to position by the ball screw 7. The bottom of the slider seat is provided with a threaded hole for threading the ball screw.

[0043] The bottom of the slider seat 3 is provided with strip-shaped notches arranged in front and back, and the strip-shaped notches are in a V-shape with the opening facing downwards; it also includes a fixed stopper 8, and the stopper 8 is provided with a strip-shaped stopper protrusion matching the strip-shaped notches. It is convenient to realize the pre-positioning of the slider seat 3. It is prevented that the slider seat 3 is positioned at the original position when the guide column guides the sub-insert 6 to retract and slide once. When the guide column contacts the transmission hole on the slider seat 3, it pushes the slider seat to slide, and then switches the stopper 8 to be clamped into the strip-shaped notches arranged in front and back.

[0044] The limiting member 8 is detachably mounted on the base, and the base is detachably connected with a limiting screw 9; the limiting screw 9 is used to resist the slider seat 3. It is convenient to realize the sliding limit of the slider seat 3. The base is detachably connected with left and right pressure strips. The slider seat slides back and forth between the front and rear pressure strips.

[0045] The sub-insert 6 is provided with a strip-shaped protrusion with a length direction extending to the left and right; the movable cavity of the sub-insert 6 is provided with a strip-shaped sliding groove slidably connected to the strip-shaped protrusion.

[0046] The cross section of the guide protrusion is an isosceles trapezoid.

[0047] The front side of the shovel base 2 is provided with a wear-resistant block slidably connected to the right side of the slider seat. The right side of the slider seat is tilted backward from top to bottom.

[0048] Working principle:

[0049] When the mold is opened, the inclined guide column 1 drives the insert transmission part 4 to move backward. At this time, the ball screw plays a positioning role. The insert transmission part 4 links the dovetail transmission block 10 to drag the two sub-inserts 6 inward, and the product is inverted and separated from the mold for the first time. Due to the installation of the limit part, the slider seat is stationary during the first action.

[0050] The inclined guide pillar 1 continues to open the mold and drags the slider assembly to move backward as a whole, and the sliding assembly is stopped by the limit screw 9.

[0051] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The insert retracting avoidance type slider demoulding mechanism includes a slider assembly, a synchronously rising and falling inclined guide column and a shovel base, characterized in that: The slider assembly includes a slider seat, a dovetail transmission block, an insert transmission member, a main insert, and two sub-inserts that are arranged in mirror symmetry; The main insert is detachably mounted on the front end of the slider seat; The main insert is provided with a sub-insert movable cavity for the sub-insert to slide left and right, the slider seat is provided with a transmission member movable cavity for the insert transmission member to slide forward and backward, and the sub-insert movable cavity is connected with the transmission member movable cavity; The insert transmission member is provided with a guide hole for slidingly connecting the inclined guide column; The front end of the insert transmission member is provided with a dovetail groove for longitudinally slidingly connecting the dovetail transmission block; The left and right sides of the dovetail transmission block are provided with guide protrusions slidably connected to the sub-insert, and the spacing between the guide protrusions on the left and right sides of the dovetail transmission block increases from front to back; The two sub-inserts are provided with molding grooves for molding the protrusion structure on the far side thereof; The slider seat is provided with a transmission hole for inserting the oblique guide column, the cross section of the transmission hole is oval, and the transmission hole is butted and connected with the guide hole.

2. The insert retracting avoidance type slider demoulding mechanism according to claim 1 is characterized in that: The slider seat is threadedly connected with a ball screw; The bottom of the insert transmission part is provided with spherical limiting grooves arranged front and back for clamping the positioning beads of the ball screw.

3. The insert retracting avoidance type slide demoulding mechanism according to claim 1, characterized in that: The bottom of the slider seat is provided with strip-shaped notches arranged front and back, and the strip-shaped notches are in a V-shape with the opening facing downward; It also includes a fixed limiting member, on which a strip-shaped limiting protrusion matching the strip-shaped notch is provided.

4. The insert retracting avoidance type slider demoulding mechanism according to claim 3 is characterized in that: The limiting member is detachably mounted on the base, and the base is detachably connected to a limiting screw; The limit screw is used to abut against the slider seat.

5. The insert retracting avoidance type slide demoulding mechanism according to claim 1, characterized in that: The sub-insert is provided with strip-shaped protrusions extending left and right in the length direction; The sub-insert active cavity is provided with a strip-shaped sliding groove which is slidably connected with the strip-shaped protrusion.

6. The insert retracting avoidance type slider demoulding mechanism according to claim 1, characterized in that: The cross section of the guide protrusion is an isosceles trapezoid.

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