Rotary sliding block one-time demolding mechanism

Abstract

The utility model discloses a rotary sliding block one-time demolding mechanism, and particularly relates to the technical field of mold equipment. The demolding mechanism comprises a concave mold, a linear core-pulling assembly, a rotary core-pulling assembly and a connecting piece; a cavity used for injection molding of the elbow injection molding part is formed in the female die core, and the elbow injection molding part is integrally formed by an arc-shaped pipe body and a linear pipe body. One end of the linear core-pulling assembly is inserted into the linear pipe body of the elbow injection molding part, and meanwhile, the linear core-pulling assembly is telescopically mounted in the cavity; one end of the rotary core-pulling assembly is inserted into the arc-shaped pipe body of the elbow injection-molded part and is hinged to the female die at the same time; one end of the connecting piece is hinged with the linear core-pulling assembly, and the other end is hinged with the rotary core-pulling assembly; when the linear core-pulling assembly is pulled out of the linear pipe body, the connecting rod moves along with the linear core-pulling assembly to drive the rotary core-pulling assembly to rotate around the hinge center and to be pulled out of the arc pipe body, so that two demolding actions are simplified, and the production efficiency of elbow injection molding parts is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold equipment, and specifically discloses a one-time demoulding mechanism of a rotary slider. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods; they are widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The use of a contour shape with a cutting edge can make the blank separate according to the contour shape, and the use of an inner cavity shape can make the blank obtain a corresponding three-dimensional shape.

[0003] The device that can accurately eject the plastic part formed in the inner cavity from the mold cavity or the core is called a demolding mechanism. Currently, there are mainly spring-type demolding mechanisms, slider-type demolding mechanisms, ejector-type demolding mechanisms and other demolding mechanisms. However, the existing demolding mechanisms are difficult to demold for special-shaped injection molded parts with both curved and straight parts. Usually, more than two demolding actions must be completed, which affects the production efficiency of special-shaped plastic parts. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art. To this end, the purpose of the utility model is to propose a one-time demoulding mechanism of a rotating slider, which solves the problem that the existing demoulding mechanism has too many demoulding actions when facing special-shaped plastic parts, thereby improving the production efficiency of special-shaped plastic parts.

[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0006] Solution 1: A one-step demoulding mechanism of a rotary slider, characterized by comprising:

[0007] A concave mold, wherein the core of the concave mold is provided with a cavity for injection molding of an elbow injection molded part, wherein the elbow injection molded part is integrally composed of an arc-shaped tube body and a straight tube body extending along a tangent line at one end of the arc-shaped tube body;

[0008] A linear core pulling assembly, the linear core pulling assembly comprises a linear mold core and a driving component for driving the linear mold core to reciprocate in an axial direction, the driving component comprises a first guide rail, a first slider, and a driving element, the first guide rail is fixed to the die, the first slider can be slidably connected to the first guide rail for reciprocating motion along the first guide rail, and is connected to the driving element, the linear mold core is fixed to the driving component, and one end of the linear mold core away from the driving component is inserted into the linear tube body of the elbow injection molded part;

[0009] A rotating core-pulling assembly, the rotating core-pulling assembly comprises an arc-shaped mold core and a rotating component that drives the arc-shaped mold core to rotate along the circumference of the arc, the rotating component comprises a second guide rail and a second slider, the second guide rail is fixed to the die, the second slider can be slidably connected to the second guide rail in a reciprocating manner along the direction of the second guide rail, the rotating component and the die are hinged at the center of the arc-shaped mold core, the arc-shaped mold core is fixed to the rotating component, the end of the arc-shaped mold core away from the rotating component is inserted into the arc-shaped tube body of the elbow injection molded part, aligned with the center of the linear mold core, and abutted against the end surface of the linear mold core away from the driving component;

[0010] A connecting member, one end of which is rotatably connected to the first sliding block, and the other end of which is rotatably connected to the second sliding block.

[0011] Furthermore, the linear core pulling assembly also includes a fixed seat, a connecting block, a first fixed block, and a positioning cylinder;

[0012] The fixed seat is fixed on the outer surface of the die, the driving element is fixed on the fixed seat, the driving element is connected to the first slider through the connecting block, the positioning cylinder coincides with the axis of the linear mold core and is sleeved on the linear mold core, one end of the positioning cylinder is in contact with the first slider, and the first fixed block clamps the positioning cylinder and is clamped on the first slider.

[0013] Furthermore, the rotary core pulling assembly also includes a pressing block, a connecting shaft, and a clamping block;

[0014] The pressing block is provided with a countersunk hole for connecting the second slider and is fixed to the second slider. The pressing block is also provided with a blind hole. The connecting shaft is inserted into the blind hole, and the bottom surface of the connecting shaft abuts against the bottom surface of the blind hole. The pressing block is also provided with a square notch for installing the clamping block. The clamping block is buried in the square notch and fixed on the pressing block, and is clamped with the end of the connecting shaft away from the arc-shaped mold core.

[0015] Furthermore, a T-shaped slot is provided on the first sliding block, and the connecting block is clamped in the T-shaped slot of the first sliding block.

[0016] By adopting the above solution, when installing or removing the connecting block, the first sliding block can be connected or disconnected by simply inserting or removing the connecting block into or from the T-slot.

[0017] Furthermore, the first slider is provided with a slot on the side away from the driving element, the second slider is provided with a slot on the side close to the first slider, one end of the connecting member is inserted into the slot of the first slider and hinged to the first slider, and the other end of the connecting member is inserted into the slot of the second slider and hinged to the second slider.

[0018] By adopting the above scheme, the notch and the connecting piece are hingedly matched, so that the connecting piece has space to move during the demoulding process, thereby ensuring the smooth progress of the demoulding action.

[0019] Furthermore, a slot is provided on the first sliding block away from the driving element, and the first fixing block adopts a split structure, with bosses provided on both sides of the dividing line; the first fixing blocks are spliced, and the bosses are snapped into the slot of the first sliding block.

[0020] By adopting the above solution, the split structure of the first fixing block facilitates the installation and removal of the positioning cylinder clamped by it, and the clamping connection between the first fixing block and the first sliding block after splicing improves the structural stability of the driving assembly.

[0021] Furthermore, a guide groove is provided on the surface of the second sliding block in contact with the die, and the shape of the notch of the guide groove is adapted to the shape of the track of the second guide rail.

[0022] By adopting the above solution, when the rotating component drives the arc-shaped mold core to rotate, the second slider slides along the guide rail direction, and the guide groove improves the sliding stability of the second slider.

[0023] The beneficial effects of the utility model are:

[0024] When the linear core pulling assembly is driven by the driving assembly and is pulled out from the linear tube body of the elbow injection molded part, the connecting part moves with the straight core pulling assembly, and at the same time drives the rotating core pulling assembly to rotate around the hinge center and is pulled out from the arc-shaped tube body of the elbow injection molded part, thereby simplifying two demoulding actions into one demoulding action, thereby improving the production efficiency of the elbow injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a partially broken cross-sectional schematic diagram of the utility model; Figure 3 It is a partially broken cross-sectional schematic diagram of the utility model; Figure 4 It is a side sectional structural schematic diagram of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the driving component of the utility model.

[0028] In the figure: 1, concave mold; 2, linear core pulling assembly; 3, rotary core pulling assembly; 4, connecting piece; 21, linear core; 22, driving component; 221, first guide rail; 222, first slider; 223, driving element;

[0029] 224, fixing seat; 225, connecting block; 226, first fixing block; 227, positioning cylinder; 228, T-slot;

[0030] 229, boss; 31, arc-shaped mold core; 32, rotating component; 321, second guide rail; 322, second slider;

[0031] 323, pressing block; 324, connecting shaft; 325, clamping block; 326, guide groove. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0033] See also Figure 1 In one embodiment of the utility model, a rotary slider one-time demoulding mechanism includes: a die 1, a linear core pulling component 2, a rotary core pulling component 3, and a connecting piece 4.

[0034] Combination Figure 2-Figure 4 Specifically, the die 1 is in a square shape as a whole, with a detachable die core fixed at the center, and a cavity for injection molding of the elbow injection molded part is provided on the die core of the die 1.

[0035] Specifically, the linear core pulling assembly 2 includes a linear core 21 and a driving component 22 that drives the linear core 21 to reciprocate in the axial direction, and the rotating core pulling assembly 3 includes an arc core 31 and a rotating component 32 that drives the arc core 31 to rotate along the circumference of the arc.

[0036] It should be noted that the elbow injection molded part is integrally composed of an arc-shaped tube body and a straight tube body extending along the tangent of one end of the arc-shaped tube body. In the utility model, the purpose of the demolding mechanism is to separate the mold core from the elbow injection molded part, wherein the straight mold core 21 is controlled by the driving component 22 to perform linear motion and is separated from the straight tube body of the injection molded part, and at the same time, the arc-shaped mold core 31 is controlled by the rotating component 32 to perform rotational motion and is separated from the arc-shaped tube body of the injection molded part.

[0037] Specifically, the driving component 22 includes a first guide rail 221 , a first sliding block 222 , a driving element 223 , a fixing seat 224 , a connecting block 225 , a first fixing block 226 , and a positioning cylinder 227 .

[0038] Optimized, in order to facilitate the installation of the driving element 223, a mounting seat is fixed on the outer surface of the die 11, and the driving element 223 adopts a single-rod double-acting hydraulic cylinder, which is detachably fixed to the mounting seat by screws so that the movement direction of the piston rod is perpendicular to the outer surface of the die 1.

[0039] Specifically, the first guide rail 221 is fixed on the die 1, the first slider 222 can be slidably connected to the first guide rail 221 for reciprocating motion along the first guide rail 221, and is connected to the driving element 223, the linear mold core 21 is fixed on the driving component 22, and the end of the linear mold core 21 away from the driving component 22 is inserted into the linear tube body of the elbow injection molded part, the fixing seat 224 is fixed on the outer surface of the die 1, the driving element 223 is fixed on the fixing seat 224, and the first slider 222 is provided with a T The connecting block 225 is clamped in the T-slot of the first slider 222, the positioning cylinder 227 coincides with the axis of the linear mold core 21 and is sleeved on the linear mold core 21, one end of the positioning cylinder 227 abuts against the first slider 222, and a slot is provided on the first slider 222 away from the driving element 223. The first fixed block 226 adopts a split structure, and a boss 229 is provided on both sides of the dividing line; the first fixed block 226 is spliced, and the boss 229 is clamped in the slot of the first slider 222.

[0040] Optimally, before installing the positioning cylinder 227, a part of the fixing block is first fixed on the first sliding block 222, and a semicircular cavity is provided on the fixing block to play a positioning role in the installation of the positioning cylinder 227, and then the other part of the fixing block is spliced.

[0041] Specifically, the rotating component 32 includes a second guide rail 321, a second slider 322, a pressure block 323, a connecting shaft 324, and a clamping block 325; the second guide rail 321 is fixed on the die 1, and the second slider 322 can be slidably connected to the second guide rail 321 in a reciprocating manner along the direction of the second guide rail 321. A guide groove 326 is provided on the surface of the second slider 322 that contacts the die 1, and the notch shape of the guide groove 326 is adapted to the track shape of the second guide rail 321. The rotating component 32 and the die 1 are hinged at the corresponding center of the arc-shaped mold core 31, and the arc-shaped mold core 31 is fixed on the rotating component 32. The end of the arc-shaped mold core 31 away from the rotating component 32 is inserted into the arc-shaped tube body of the elbow injection molded part, aligned with the center of the linear mold core 21, and abutted against the end face of the linear mold core 21 away from the driving component 22. The pressure block 323 is provided with a The countersunk hole of the second slider 322 is fixed to the second slider 322, the pressing block 323 is also provided with a blind hole, the connecting shaft 324 is inserted into the blind hole, the bottom surface of the connecting shaft 324 abuts against the bottom surface of the blind hole, the pressing block 323 is also provided with a square notch for installing a clamping block 325, the clamping block 325 is buried in the square notch and fixed on the pressing block 323, and is clamped with the end of the connecting shaft 324 away from the arc-shaped mold core 31, the end surface of the connecting shaft 324 away from the pressing block 323 is provided with a square boss, and a through hole is also provided on the side surface of the square boss, the end surface of the arc-shaped mold core 31 close to the connecting shaft 324 is provided with a groove adapted to the square boss, and a through hole of the same size as the through hole on the square boss is also provided on the side wall of the cylindrical body of the arc-shaped mold core 31, the square boss is inserted into the groove and the through holes are aligned and then hinged and fixed. It should be noted that all the above-mentioned fixed connection methods are fixed with detachable screws.

[0042] Specifically, the connecting member 4 adopts a rigid V-shaped connecting rod with a large opening, one end of the connecting rod is inserted into the notch of the first slider 222 and hinged on the first slider 222 , and the other end of the connecting member 4 is inserted into the notch of the second slider 322 and hinged on the second slider 322 .

[0043] The implementation principle of the utility model is as follows: in the initial state of demoulding, the piston rod of the hydraulic cylinder is in a fully extended state; when the demoulding action starts, oil enters the oil inlet of the hydraulic cylinder and returns oil from the oil return port, the piston of the hydraulic cylinder is squeezed, thereby driving the piston rod to contract, thereby driving the connecting block 225 connected to the end of the piston rod by threaded connection to move, so that the first slider 222 slides along the first track in the same direction as the piston rod, and the first fixed block 226, the positioning cylinder 227 and the linear mold core 21 fixed on the side of the first slider 222 away from the driving element 223 are also driven to move in the contraction direction of the piston rod, and the linear mold core 21 is drawn out from the linear tube body of the elbow injection molded part;

[0044] The first slider 222 is provided with a notch on the side away from the driving element 223, and the second slider 322 is provided with a notch on the side close to the first slider 222. Due to the connection effect of the V-shaped connecting rod, the first slider 222 slides along the first track in the same direction as the piston rod, and the second slider 322 rotates around the center of the hinge with the die 1. The groove on the second slider 322 is guided by the second guide rail 321 fixed on the die 1, driving the pressing block 323 fixed on the second slider 322 to rotate, thereby driving the clamping block 325 and the connecting shaft 324 fixed on the pressing block 323 to move, and the connecting shaft 324 moves.

[0045] When the arc mold core 31 is moved, it is driven to be drawn out from the arc-shaped tube body of the elbow injection molded part.

[0046] To summarize, the stability of the demolding action is improved through the sliding connection between the guide rail and the corresponding slider, the positioning accuracy of the linear mold core 21 is improved and disassembly and assembly are convenient through the split structure of the first fixed block 226, and the linear mold core 21 is hinged with the first slider 222 and the second slider 322, so that the linear mold core 21 is pulled out of the linear tube body of the elbow injection molded part, and the arc mold core 31 is simultaneously pulled out of the arc tube body of the elbow injection molded part, so that the two demolding actions are simplified to one demolding action, thereby improving the production efficiency of elbow injection molded parts.

[0047] In one possible implementation, combining Figure 1 and Figure 5 The driving element 223 is manually driven. The driving device consists of a connecting rod and a handle. Internal threaded holes are provided on the end faces of both ends of the connecting rod. One end of the connecting rod is fixed to the connecting block 225 by threads, and the other end is against the handle. The handle is generally in a straight line shape, and the end face close to the piston rod is wavy, which is convenient for human hand holding. A countersunk hole is provided on the end face away from the piston rod, and a screw is inserted into the handle. The piston rod and the handle are fixed by threaded connection. When demolding, the worker manually holds the handle to provide power for the driving component 22.

[0048] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A one-step demoulding mechanism of a rotary slider, characterized in that: include: A female mold (1), wherein a cavity for injection molding an elbow injection molded part is provided on a mold core of the female mold (1), wherein the elbow injection molded part is integrally formed by an arc-shaped tube body and a straight tube body extending along a tangent line at one end of the arc-shaped tube body; A linear core pulling assembly (2), the linear core pulling assembly (2) comprising a linear mold core (21) and a driving component (22) for driving the linear mold core (21) to reciprocate in an axial direction, the driving component (22) comprising a first guide rail (221), a first slider (222), and a driving element (223), the first guide rail (221) being fixed to the die (1), the first slider (222) being slidably connected to the first guide rail (221) for reciprocating motion along the first guide rail (221), and being connected to the driving element (223), the linear mold core (21) being fixed to the driving component (22), and the end of the linear mold core (21) away from the driving component (22) being inserted into the linear tube body of the elbow injection molded part; A rotary core pulling assembly (3), the rotary core pulling assembly (3) comprising an arc-shaped mold core (31) and a rotary component (32) driving the arc-shaped mold core (31) to rotate along the circumference of the arc, the rotary component (32) comprising a second guide rail (321) and a second slider (322), the second guide rail (321) being fixed on the die (1), the second slider (322) being slidably connected to the second guide rail (321) so as to reciprocate along the direction of the second guide rail (321) On the second guide rail (321), the rotating component (32) and the concave mold (1) are hinged at the center of the circular arc mold core (31), the circular arc mold core (31) is fixed on the rotating component (32), and the end of the circular arc mold core (31) away from the rotating component (32) is inserted into the circular arc tube body of the elbow injection molded part, aligned with the center of the linear mold core (21), and abutted against the end surface of the linear mold core (21) away from the driving component (22); A connecting member (4), wherein one end of the connecting member (4) is rotatably connected to the first sliding block (222), and the other end of the connecting member (4) is rotatably connected to the second sliding block (322).

2. The one-step demoulding mechanism of a rotary slider according to claim 1, characterized in that: The linear core pulling assembly (2) further comprises a fixing seat (224), a connecting block (225), a first fixing block (226), and a positioning cylinder (227); The fixing seat (224) is fixed on the outer surface of the die (1); the driving element (223) is fixed on the fixing seat (224); the driving element (223) is connected to the first slider (222) via the connecting block (225); the positioning cylinder (227) coincides with the axis of the linear mold core (21) and is sleeved on the linear mold core (21); one end of the positioning cylinder (227) is in contact with the first slider (222); the first fixing block (226) clamps the positioning cylinder (227) and is clamped on the first slider (222).

3. The one-step demoulding mechanism of a rotary slider according to claim 1, characterized in that: The rotary core-pulling assembly (3) further comprises a pressing block (323), a connecting shaft (324), and a clamping block (325); The pressing block (323) is provided with a countersunk hole for connecting the second sliding block (322) and is fixed to the second sliding block (322). The pressing block (323) is also provided with a blind hole. The connecting shaft (324) is inserted into the blind hole. The bottom surface of the connecting shaft (324) abuts against the bottom surface of the blind hole. The pressing block (323) is also provided with a square notch for installing the clamping block (325). The clamping block (325) is embedded in the square notch and fixed to the pressing block (323), and is clamped with the end of the connecting shaft (324) away from the arc-shaped mold core (31).

4. The one-step demoulding mechanism of a rotary slider according to claim 2, characterized in that: The first sliding block (222) is provided with a T-shaped slot (228), and the connecting block (225) is snap-fitted into the T-shaped slot of the first sliding block (222).

5. The one-step demoulding mechanism of a rotary slider according to claim 1, characterized in that: The first slider (222) is provided with a notch on a side away from the driving element (223), the second slider (322) is provided with a notch on a side close to the first slider (222), one end of the connecting member (4) is inserted into the notch of the first slider (222) and is hinged to the first slider (222), and the other end of the connecting member (4) is inserted into the notch of the second slider (322) and is hinged to the second slider (322).

6. The one-step demoulding mechanism of a rotary slider according to claim 2, characterized in that: A slot is provided on the first sliding block (222) away from the driving element (223); the first fixing block (226) adopts a split structure, and bosses (229) are provided on both sides of the dividing line; the first fixing blocks (226) are assembled, and the bosses (229) are inserted into the slot of the first sliding block (222).

7. The one-step demoulding mechanism of a rotary slider according to claim 1, characterized in that: A guide groove (326) is provided on the surface of the second sliding block (322) that contacts the die (1); the shape of the notch of the guide groove (326) matches the shape of the track of the second guide rail (321).

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