CN211390013U - Compression spring even two-way T type groove self-adaptation structure of loosing core of power - Google Patents

Abstract

The utility model discloses a compression spring even two-way T type groove self-adaptation structure of loosing core of power is applied to the core of the great and longer U type elbow of bellmouth part straightway of inclination and bend radius in the product and is decomposed the combination and loose core, and it includes U-shaped core, slider and stop device, and U-shaped core one end is relative with moving the model chamber, and the other end is connected with slider and stop device respectively, and the slider is connected with hydro-cylinder connector and stop device respectively, and the hydro-cylinder connector is connected with outside hydro-cylinder. The utility model discloses mainly utilize hydro-cylinder cooperation linear spring compression, and dovetail to rubbing the effect with the hands, the core substep of will decomposing is loosed core, utilizes the reverse effort of spring to make core lamella piece do in the T type groove of guide holder and remove about, forms the core according to moulding a shape self-adaptation compound motion, makes whole core loose core and core inserts dodge the action and link up. The plastic part molding machine has the advantages of small occupied space, simple structure, few parts, reliable movement, short production period of the plastic part, high efficiency and the like.

Description

Compression spring even two-way T type groove self-adaptation structure of loosing core of power

Technical Field

The utility model relates to a structure of loosing core belongs to the injection mold field, specific saying so relates to a compression spring even two-way T type groove self-adaptation structure of loosing core of power.

Background

In plastic material molding products, a large number of elbow products are used to connect water supply and drainage pipelines, and the core pulling action and the molding method applied to the mold production of various elbow products in the current mold design are many, but the core pulling of the bent part inside the elbow of the plastic part is limited by the straight line segment of the socket part, so the rotation angle of the inward bent part is limited. In order to achieve the purpose that the inward-bent part can smoothly loose the core from the straight-line socket, the current design of many elbow products adopts the method of reducing the diameter of the inward-bent part (namely the diameter of water passing), although the method can achieve the purposes of reducing the inward-bent part and increasing the rotatable angle of the inward-bent part, and further achieves the purpose of pulling the core from the connected straight-line socket, the method of reducing the diameter of the inward-bent part (namely the diameter of water passing) has the practical problems of reducing the flow rate of water passing, increasing the pressure of the water passing and prolonging the water supply time, the practical treatment result brought by extension needs to increase the transmission power of a water supply source, namely the output power of a water supply system, so that the energy consumption is increased, and the cost investment of water supply facilities is increased.

Therefore, a structure capable of successfully pulling a core of an elbow portion of a plastic part in a state that the diameter of the elbow portion is equal to that of a straight-line socket is needed to solve the above practical problems and the cost increase burden caused by the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compression spring even two-way T type groove self-adaptation structure of loosing core of power for solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a compression spring and power combined bidirectional T-shaped groove self-adaptive core pulling structure comprises a U-shaped core, a sliding block connected with the U-shaped core and a limiting device respectively connected with the U-shaped core and the sliding block; the U-shaped core comprises a left half U-shaped core, a right half U-shaped core, a left half U-shaped core petal block, a right half U-shaped core petal block, a left T-shaped block, a right T-shaped block and a guide seat; the left half U-shaped core flap block is arranged on the inner side of the left half U-shaped core and correspondingly connected with the inner side of the left half U-shaped core in a sliding fit manner, the right half U-shaped core flap block is arranged on the inner side of the right half U-shaped core and correspondingly connected with the inner side of the right half U-shaped core in a sliding fit manner, the upper end of the left T-shaped block is fastened at the tail end of the left half U-shaped core flap block through a positioning pin and a screw, the upper end of the right T-shaped block is fastened at the tail end of the right half U-shaped core flap block through a positioning pin and a screw, and the lower ends of the left T-shaped block and the right T-shaped block are connected with the guide seat in a; the guide seat is located below the tail ends of the left half U-shaped core petal and the right half U-shaped core petal and connected with the limiting device, and the limiting device is located below the sliding block and the U-shaped core and connected with the guide seat of the U-shaped core and the bottom of the sliding block respectively.

In the technical scheme, the hydraulic cylinder device further comprises an oil cylinder connector connected with the sliding block, and the oil cylinder connector is connected with an external oil cylinder;

during the use, the movable mould chamber that is equipped with in U-shaped core front end and the movable mould board is relative, the tail end respectively with slider and stop device link to each other, the slider passes through the hydro-cylinder connector and links to each other with outside hydro-cylinder, under the drive effect of outside hydro-cylinder, along with stop device along the direction round trip movement of loosing core of U-shaped core under the drive of U-shaped core through hydro-cylinder connector and slider, realize with the suction in movable mould chamber with take out the cooperation, realize moulding plastics and the drawing of core drawing of piece product are moulded to U type elbow.

Further in the above technical solution, the device further comprises a bracket for supporting the U-shaped core, the slider, the cylinder connector and the limiting device; the U-shaped mold core, the sliding block, the oil cylinder connector and the limiting device are all located in a U-shaped sliding groove formed in the support, the support is fastened on one side, facing the U-shaped mold core, of the movable mold plate through screws, the U-shaped sliding groove of the support is communicated with a movable mold cavity in the movable mold plate, and the guide seat of the U-shaped mold core is connected with the U-shaped sliding groove of the support in a sliding fit mode.

Further in the above technical scheme, one end of the slider is detachably connected with the oil cylinder connector, and the other end of the slider is detachably connected with the tail ends of the left half U-shaped core and the right half U-shaped core of the U-shaped core respectively; the slider still with stop device can dismantle the connection, the hydro-cylinder connector can be dismantled with outside hydro-cylinder and be connected.

Furthermore, in the above technical solution, the limiting device comprises a spring, a connecting rod, a stay spring stop block and a limiting nut; the utility model discloses a slide block core pulling device, including the slide block, prop the spring dog, the spring dog is in through the screw-on connect the slide block bottom, and still the cover is established on the connecting rod, the connecting rod passes prop the spring dog, and connecting rod one end with guide holder screw-thread fit connects, the other end with stop nut screw-thread fit connects, the spring housing is established connect to be located the guide holder and prop between the spring dog, and spring one end with guide holder looks butt, the other end with prop spring dog looks butt, the spring is used for at slider drive U-shaped core initial state of loosing core motion, and half U-shaped core lamella piece on the left side of U-shaped core and half U-shaped core lamella piece on the right side exert pressure, make half U-shaped core lamella piece on the left side and half U-shaped core lamella piece on the right side not remove.

Furthermore, in the above technical solution, a threaded through hole is formed in one side of the guide seat facing the connecting rod, two pin holes are formed in one side of the guide seat facing away from the connecting rod, the threaded through hole is used for being in threaded fastening fit with the connecting rod, the pin holes are used for being in fastening fit with a guide pin, and the guide pin is used for being in sliding fit with a cavity counter bore formed in the moving mold cavity.

Furthermore, in the above technical solution, the guide seat is further provided with a T-shaped chute, the T-shaped chute is perpendicular to the U-shaped chute on the bracket, and the T-shaped chute is used for sliding-fitting with the lower ends of the left T-shaped block and the right T-shaped block of the U-shaped mold core.

Further, in the above technical solution, the T-shaped chute is perpendicular to the U-shaped chute, and the sliding direction of the left T-shaped block and the right T-shaped block of the U-shaped core in the T-shaped chute in the guide seat is perpendicular to the sliding direction of the guide seat of the U-shaped core in the U-shaped chute in the bracket;

the sliding direction of the guide seat of the U-shaped core in the U-shaped sliding groove of the support is consistent with the moving direction of the sliding block, the oil cylinder connector and the limiting device in the U-shaped sliding groove of the support, and the sliding direction is the same as the core pulling direction.

Furthermore, in the above technical solution, an inclined dovetail groove is respectively provided on one side of the left half U-shaped core facing the right half U-shaped core and one side of the right half U-shaped core facing the left half U-shaped core;

an inclined dovetail protrusion is respectively arranged on one side of the left half U-shaped core segment facing the left half U-shaped core and one side of the right half U-shaped core segment facing the right half U-shaped core;

the left half U-shaped core segment is correspondingly and slidably arranged in an inclined dovetail groove arranged on the left half U-shaped core through an inclined dovetail projection arranged on the left half U-shaped core segment, and is mutually connected with the left half U-shaped core in a sliding fit manner;

the right half U-shaped core petal piece is correspondingly arranged in a sliding mode through an inclined dovetail protrusion arranged on the right half U-shaped core petal piece in an inclined dovetail groove arranged on the right half U-shaped core petal piece, and the right half U-shaped core petal piece and the right half U-shaped core are connected in a sliding fit mode.

The utility model provides a pair of compression spring even two-way T type groove self-adaptation of power structure of loosing core's theory of operation does:

(1) when the mold is used for mold closing and injection, the fixed mold is utilized to tightly press the sliding block of the core pulling structure, and the compression spring is pressed through the support spring stop block to perform injection molding on a plastic part;

(2) after the die is closed and injected, the fixed die is opened, the external oil cylinder is started to work, the sliding block is driven by the external oil cylinder to drive the U-shaped core to retreat, and core pulling is started;

(3) when the oil cylinder starts to loose the core, the oil cylinder utilizes the oil cylinder connector to pull the sliding block to drive the U-shaped core to retreat so as to perform the core-pulling action of the plastic part product, when the core pulling starts, the spring is in a compression state (the compression force of the compression spring is transmitted to the guide seat through the spring supporting stop block fixed below the sliding block and then is transmitted to the left and right T-shaped blocks of the U-shaped core and the left and right half U-shaped core petals fixedly connected with the T-shaped blocks by the guide seat, and at the moment, the spring supporting stop block fixed below the sliding block and the connecting rod are in a clearance state), the left and right half U-shaped core petals are still in a compressed state and do not move along with the sliding block, and the left and right half U-shaped core petals can only move left and right in the direction vertical to the core pulling motion through the dovetail grooves (namely, the left and right T-shaped blocks fixed below the left and right half U-shaped core petals do left and right sliding motion in the guide seat);

(4) when the slide block continues to loose core, the spring is relaxed to return and the compression force disappears, the displacement vector values in the vertical direction generated by the left half U-shaped core segment and the right half U-shaped core segment through the dovetail groove guide satisfy the restriction that the bent parts at the front ends of the respective segment are separated from the plastic product, so that the purpose of drawing the left half U-shaped segment and the right half U-shaped segment out of the linear section of the plastic product is achieved, and meanwhile, the supporting spring stop block below the slide block is contacted with the limiting nut on the connecting rod;

(5) the oil cylinder continues to drive the sliding block to pull the core, meanwhile, the supporting spring stop block drives the connecting rod to pull the guide seat to drive the left half U-shaped core flap block and the right half U-shaped core flap block to continue to be drawn away from a plastic product until the sliding block reaches the set positioning position, so that the left half U-shaped core flap block and the right half U-shaped core flap block of the U-shaped core are drawn away from the plastic product, a blank product is avoided, and finally, the plastic product is ejected out through the injection molding machine driving ejector.

Compared with the prior art, the utility model discloses an advantage and beneficial effect are:

1) the problems of poor reliability and incapability of cooling of a swing structure (namely a head-tilting structure) in the traditional method are solved;

2) the problem of large occupied space of a rotary motion structure is avoided;

3) the problems of complex assembly, instability and excessive parts of an external synchronous arc track structure are solved;

4) the plastic part molding machine has the advantages of small occupied space, simple structure, few parts, reliable movement, short production period of the plastic part, high working efficiency and the like.

The utility model provides a structure of loosing core is mainly that a be applied to in the product have the inclination and bend radius great, and the decomposition combination of the core of the longer U type elbow of bellmouth part straightway is loosed core, its innovation point lies in: the method comprises the steps that a staged locking force is formed by effectively utilizing a spring compression force, and the core-pulling power of an oil cylinder is connected to form a power source for continuously pulling the core when the spring is loosened, restored and returned; meanwhile, the oblique dovetail groove generates left-right displacement in the vertical direction when moving in the core pulling direction, so that the purpose that the inner arc part of the core is separated from the product is achieved.

In a comprehensive way, an oil cylinder is utilized to be matched with a linear spring to be compressed under the rubbing action of a dovetail groove, the core of the decomposed core is pulled step by step, meanwhile, the core clack blocks move leftwards and rightwards in a T-shaped groove in a guide seat under the reverse acting force of the compression spring, a core pulling mode of the core self-adaptive compound motion according to the shape of a plastic part is formed, and the core pulling of the whole core and the avoiding action of the core insert are continuously completed.

Drawings

FIG. 1 is a schematic view of the assembly of the present invention;

FIG. 2 is a perspective view of one of the U-shaped cores of FIG. 1;

FIG. 3 is a schematic perspective view of the U-shaped core of FIG. 1 from another perspective;

fig. 4 is a perspective exploded view of the present invention;

FIG. 5 is an initial state diagram of the present invention during core pulling;

FIG. 6 is a front view of the core pulling structure of FIG. 5;

FIG. 7 is a drawing I of the core pulling operation process of the product core pulling device of the present invention;

FIG. 8 is a front view of the core back structure of FIG. 7;

FIG. 9 is a drawing of the second core pulling operation process of the present invention during core pulling of the product;

FIG. 10 is a front view of the core back structure of FIG. 9;

FIG. 11 is a third drawing of the core pulling operation of the product core pulling apparatus of the present invention;

FIG. 12 is a front view of the core back structure of FIG. 11;

FIG. 13 is a drawing showing a state of the core pulling operation of the core pulling device;

FIG. 14 is a front view of the core back structure of FIG. 13;

description of reference numerals: 100. a U-shaped core; 101. a left half U-shaped core; 102. a right half U-shaped core; 103. a left half U-shaped core petal; 104. a right half U-shaped core petal; 105. a left T-shaped block; 106. a right T-shaped block; 107. a guide seat; 107b, a threaded through hole; 107c, pin holes; 108. a sloping dovetail groove; 109. a sloping dovetail projection; 110. a guide pin; 107a, a T-shaped chute; 200. a slider; 300. a cylinder connector; 400. a limiting device; 401. a spring; 402. a connecting rod; 403. a spring supporting stop block; 404. a limit nut; 500. a support; 501. a chute; 600. moving the template; 601. a movable model cavity; 700. and (3) a U-shaped elbow plastic part product.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, how to implement the present invention is further explained below with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, the utility model provides a compression spring and power bidirectional T-shaped groove self-adaptive core pulling structure, which is applied to the core disassembly and combination core pulling of a U-shaped elbow plastic part product 700 with a larger inclination and bending radius and a longer straight-line section of a bellmouth part in the product, and comprises a U-shaped core 100, a slider 200, an oil cylinder connector 300, a limiting device 400 and a bracket 500; the U-shaped core 100, the slider 200, the oil cylinder connector 300 and the limiting device 400 are all located in the support 500, the support 500 is used for supporting the U-shaped core 100, the slider 200, the oil cylinder connector 300 and the limiting device 400, the support 500 is fastened on one side of the movable mould plate 600 facing the U-shaped core 100 through screws, one end of the U-shaped core 100 is opposite to a movable mould cavity 601 arranged in the movable mould plate 600, the other end of the U-shaped core is respectively connected with the slider 200 and the limiting device 400, the slider 200 is arranged above the limiting device 400 and is respectively connected with the oil cylinder connector 300 and the limiting device 400, and the oil cylinder connector 300 is connected with an external oil cylinder (not shown in the figure.

When the U-shaped core 100 is used, the front end of the U-shaped core 100 is opposite to a movable mould cavity 601 arranged in a movable mould plate 600, the tail end of the U-shaped core is respectively connected with a sliding block 200 and a limiting device 400, the sliding block 200 is connected with an external oil cylinder through an oil cylinder connector 300, under the driving action of the external oil cylinder, the U-shaped core 100 moves back and forth in a support 500 along with the limiting device 400 under the driving action of the oil cylinder connector 300 and the sliding block 200, the U-shaped core is matched with the movable mould cavity 601 in a drawing-in and drawing-out mode, and the injection moulding and core-pulling demoulding.

As a preferred embodiment of the present invention: referring to fig. 2 to 4, the U-shaped core 100 includes a left half U-shaped core 101, a right half U-shaped core 102, a left half U-shaped core flap 103, a right half U-shaped core flap 104, a left T-shaped block 105, a right T-shaped block 106, and a guide seat 107; the left half U-shaped core petal block 103 is arranged on the inner side of the left half U-shaped core 101 and correspondingly connected with the inner side of the left half U-shaped core 101 in a sliding fit manner, the right half U-shaped core petal block 104 is arranged on the inner side of the right half U-shaped core 102 and correspondingly connected with the inner side of the right half U-shaped core 102 in a sliding fit manner, the upper end of the left T-shaped block 105 is fastened at the tail end of the left half U-shaped core petal block 103 through a positioning pin and a screw, the upper end of the right T-shaped block 106 is fastened at the tail end of the right half U-shaped core petal block 104 through a positioning pin and a screw, and the lower ends of the left T-shaped block 105 and the right T-shaped block 106; the guide seat 107 is located below the tail ends of the left half U-shaped core flap 103 and the right half U-shaped core flap 104.

In the preferred embodiment, one end of the sliding block 200 is detachably connected with the oil cylinder connector 300, the other end of the sliding block is detachably connected with the tail ends of the left half U-shaped core 101 and the right half U-shaped core 102 of the U-shaped core 100 respectively, the oil cylinder connector 300 is detachably connected with an external oil cylinder, and the limiting device 400 is connected with the sliding block 200 and the guide seat 107 of the U-shaped core 100 respectively.

In the preferred embodiment, as shown in fig. 4, 6, 8, 10, 12 and 14, the stopper 400 includes a spring 401, a connecting rod 402, a stay spring stopper 403 and a stopper nut 404; the supporting spring stop block 403 is fastened on the bottom of the sliding block 200 through a screw and is further sleeved on the connecting rod 402, the connecting rod 402 penetrates through the supporting spring stop block 403, one end of the connecting rod 402 is in threaded fit connection with the guide seat 107, the other end of the connecting rod 402 is in threaded fit connection with the limiting nut 404, the spring 401 is sleeved on the connecting rod 402 and is located between the guide seat 107 and the supporting spring stop block 403, one end of the spring 401 is abutted to the guide seat 107, and the other end of the spring 401 is abutted to the supporting spring stop block 403; the spring 401 is used to apply pressure to the left half U-core lobe 103 and the right half U-core lobe 104 of the U-core 100 when the slider 200 drives the U-core 100 to perform the core pulling movement initial state, so that the left half U-core lobe 103 and the right half U-core lobe 104 do not move along the core pulling direction of the U-core 100 with the slider 200.

Specifically, in the preferred embodiment, as shown in fig. 2 to 4, a threaded through hole 107b is formed on a side of the guide seat 107 facing the connecting rod 402, and as shown in fig. 4, two pin holes 107c are formed on a side of the guide seat 107 facing away from the connecting rod 402, the threaded through hole 107b is used for being in threaded fastening fit with the connecting rod 402, the pin holes 107c are used for being in fastening fit with the guide pin 110, and the guide pin 110 is used for being in sliding fit with a cavity counter bore (not shown) formed in the movable mold cavity 601.

Specifically, in the preferred embodiment, referring to fig. 2 to 4, a T-shaped chute 107a is further formed on the guide seat 107, and the T-shaped chute 107a is used for being in sliding fit with the lower ends of the left T-shaped block 105 and the right T-shaped block 106 of the U-shaped mold core 100; referring to fig. 1, a U-shaped sliding groove 501 is further formed in the bracket 500, the U-shaped mold core 100, the sliding block 200, the cylinder connector 300 and the limiting device 400 are all located in the U-shaped sliding groove 501 of the bracket 500, the U-shaped sliding groove 501 of the bracket 500 is communicated with a movable mold cavity 601 of the movable mold plate 600, and the guide seat 107 of the U-shaped mold core 100 is connected with the U-shaped sliding groove 501 of the bracket 500 in a sliding fit manner.

More specifically, in the preferred embodiment, referring to fig. 1, the T-shaped chute 107a and the U-shaped chute 501 are perpendicular to each other, and the sliding direction of the left T-shaped block 105 and the right T-shaped block 106 of the U-shaped core 100 in the T-shaped chute 107a in the guide seat 107 and the sliding direction of the guide seat 107 of the U-shaped core 100 in the U-shaped chute 501 in the bracket 500 are perpendicular to each other; the sliding direction of the guide seat 107 of the U-shaped core 100 in the U-shaped chute 501 in the bracket 500 is consistent with the moving direction of the left half U-shaped core 101, the left half U-shaped core petal block 103, the right half U-shaped core 102, the right half U-shaped core petal block 104, the slider 200, the oil cylinder connector 300 and the limiting device 400 in the U-shaped chute 501 in the bracket 500; that is, the sliding direction of the guide holder 107 in the U-shaped slide groove 501 in the holder 500 coincides with the core pulling direction of the U-shaped core 100, the guide holder 107 is slidable in the core pulling direction in the U-shaped slide groove 501 in the holder 500, and the left T-shaped block 105 and the right T-shaped block 106 are slidable in the T-shaped slide groove 107a of the guide holder 107.

More specifically, in the present preferred embodiment, as shown in fig. 4, a tapered dovetail groove 108 is provided on each of the side of the left half U-shaped core 101 facing the right half U-shaped core 102 and the side of the right half U-shaped core 102 facing the left half U-shaped core 101; a side of the left half U-shaped core flap block 103 facing the left half U-shaped core 101 and a side of the right half U-shaped core flap block 104 facing the right half U-shaped core 102 are respectively provided with an inclined dovetail protrusion 109; the left half U-shaped core petal block 103 is correspondingly and slidably arranged in an inclined dovetail groove 108 arranged on the left half U-shaped core 101 through an inclined dovetail projection 109 arranged on the left half U-shaped core petal block and is correspondingly and mutually connected with the left half U-shaped core 101 in a sliding fit manner; the right half U-shaped core petal piece 104 is correspondingly arranged in a sloping dovetail groove 108 arranged on the right half U-shaped core 102 in a sliding way through a sloping dovetail bulge 109 arranged on the right half U-shaped core petal piece, and is correspondingly connected with the right half U-shaped core 102 in a sliding way.

As shown in fig. 5 to 14, adopt the utility model provides a pair of compression spring even two-way T type groove self-adaptation of power structure of loosing core carries out U type elbow and moulds piece product 700 action process of loosing core as follows specifically:

(1) when the mold is closed and injected, a fixed mold (not shown in the figure) is used for pressing the slide block 200, and meanwhile, the spring 401 is pressed through the supporting spring stop 403, so that a plastic part (namely a U-shaped elbow plastic part product 700) is subjected to injection molding;

(2) after the injection of the mold is finished, opening the fixed mold, starting the external oil cylinder to work, driving the sliding block 200 to drive the U-shaped core 100 to retreat through the external oil cylinder, and starting to perform core pulling on the U-shaped elbow plastic part product 700;

(3) when the external oil cylinder starts to draw core, firstly the oil cylinder connector 300 pulls the sliding block 200 to retreat, then the sliding block 200 drives the U-shaped core 100 to retreat, at the initial stage of core drawing, the spring 401 is in a compressed state, the left and right half U-shaped core petals 103 and 104 of the U-shaped core 100 are also in a compressed state and do not move together with the sliding block 200, at this time, the left and right half U-shaped core petals 103 and 104 can only move leftwards and rightwards in the direction perpendicular to the core drawing motion through the T-shaped blocks (namely, the left and right T-shaped blocks 105 and 106) connected with the respective tail ends thereof (namely, the left and right T-shaped blocks 105 and 106 fixed below the tail ends of the left and right half U-shaped core petals 103 and 104 do left and right sliding motion in the inner T-shaped sliding groove 107a of the guide seat 107), as shown in fig. 5 to 6;

this is because, at the initial stage of core pulling, the spring compression force of the spring 401 is transmitted to the guide holder 107 through the stay spring stopper 403 fixed below the slider 200, and then transmitted to the left and right T- blocks 105 and 106 of the U-core 100 and the left and right half U-core petals 103 and 104 fixedly connected to the left and right T- blocks 105 and 106 by the guide holder 107, at this time, the stay spring stop 403 fixed below the slider 200 and the connecting rod 402 are in the clearance state, the stay spring stop 403 does not pull the connecting rod 402 to move, the connecting rod 402 does not pull the guide seat 107, so the left and right half U-shaped core petals 103 and 104 are in the compressed state and do not move together with the slider 200, only the left and right T-shaped blocks 105 and 106 connected with the tail ends of the U-shaped core 100 can do left-right sliding motion in the direction vertical to the core-pulling motion of the U-shaped core 100 in the T-shaped sliding groove 107a of the guide seat 107;

(4) when the slider 200 continues to draw core, the spring 401 is relaxed to return and the compression force disappears, at this time, the displacement vector value of the left and right half U-shaped core petals 103 and 104, which is generated by guiding and matching with the inclined dovetail grooves 108 on the left and right half U-shaped cores 101 and 102 and is perpendicular to the direction of the motion of the drawing core, meets the restriction that the bent parts at the front ends of the petals are separated from the U-shaped elbow plastic product 700, so that the purpose of extracting the left and right half U-shaped petals 103 and 104 from the straight line part of the U-shaped elbow plastic product 700 is achieved, as shown in fig. 7 and 8, and at the same time, the supporting spring stopper 403 fixed below the slider 200 is ready to be contacted with the limit nut 404 on the connecting rod 402, as shown in fig. 9 to 12;

(5) when the cylinder continues to drive the slider 200 to draw core, the slider 200 drives the connecting rod 402 to pull the guide seat 107 to retreat through the spring supporting stopper 403, the guide seat 107 drives the left and right half U-shaped core petals 103 and 104 to continue to be drawn away from the U-shaped elbow plastic part product 700 until the slider 200 reaches the set positioning position, so that the left and right half U-shaped core petals 103 and 104 of the U-shaped core 100 are drawn away from the U-shaped elbow plastic part product 700, and the empty U-shaped elbow plastic part product 700 is avoided, as shown in fig. 13 and 14, and finally, the U-shaped elbow plastic part product 700 is ejected out of the mold through the ejector pin (not shown in the figure) driven by the injection molding machine.

Finally, the above description is only the embodiments of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (9)

1. The utility model provides a compression spring even two-way T type groove self-adaptation structure of loosing core of power which characterized in that: comprises a U-shaped core (100), a slide block (200) connected with the U-shaped core (100) and a limiting device (400) respectively connected with the U-shaped core (100) and the slide block (200); the U-shaped core (100) comprises a left half U-shaped core (101), a right half U-shaped core (102), a left half U-shaped core petal block (103), a right half U-shaped core petal block (104), a left T-shaped block (105), a right T-shaped block (106) and a guide seat (107); the left half U-shaped core petal block (103) is arranged on the inner side of the left half U-shaped core (101) and correspondingly connected with the inner side of the left half U-shaped core (101) in a sliding fit manner, the right half U-shaped core petal block (104) is arranged on the inner side of the right half U-shaped core (102) and correspondingly connected with the inner side of the right half U-shaped core (102) in a sliding fit manner, the upper end of the left T-shaped block (105) is fastened at the tail end of the left half U-shaped core petal block (103) through a positioning pin and a screw, the upper end of the right T-shaped block (106) is fastened at the tail end of the right half U-shaped core petal block (104) through a positioning pin and a screw, and the lower ends of the left T-shaped block (105) and the right T-shaped block (106) are connected with the guide seat (107) in a sliding fit; the guide seat (107) is located below the tail ends of the left half U-shaped core petal block (103) and the right half U-shaped core petal block (104) and connected with the limiting device (400), and the limiting device (400) is located below the sliding block (200) and the U-shaped core (100) and connected with the guide seat (107) of the U-shaped core (100) and the bottom of the sliding block (200) respectively.

2. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 1, characterized in that: the oil cylinder connecting head (300) is connected with the sliding block (200), and the oil cylinder connecting head (300) is connected with an external oil cylinder;

during the use, the movable mould chamber (601) that is equipped with in U-shaped core (100) front end and the movable mould board (600) are relative, the tail end respectively with slider (200) and stop device (400) link to each other, slider (200) pass through hydro-cylinder connector (300) and link to each other with outside hydro-cylinder, under the drive action of outside hydro-cylinder, U-shaped core (100) along with stop device (400) along the loose core direction round trip movement of U-shaped core (100) under the drive of hydro-cylinder connector (300) and slider (200) down, realize with the suction of movable mould chamber (601) with take out the cooperation, realize the injection moulding and the drawing of loosing core drawing of moulding the piece product (700) to U type elbow.

3. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 2, characterized in that: the support is characterized by also comprising a bracket (500) for supporting the U-shaped core (100), the sliding block (200), the oil cylinder connector (300) and the limiting device (400); u-shaped core (100), slider (200), hydro-cylinder connector (300) and stop device (400) all are located in U-shaped spout (501) that are equipped with in support (500), support (500) pass through the screw fastening in movable mould board (600) one side towards U-shaped core (100), just U-shaped spout (501) of support (500) with movable mould chamber (601) on movable mould board (600) communicate each other, guide holder (107) of U-shaped core (100) with U-shaped spout (501) looks sliding fit of support (500) is connected.

4. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 3, characterized in that: one end of the sliding block (200) is detachably connected with the oil cylinder connector (300), and the other end of the sliding block is detachably connected with the tail ends of the left half U-shaped core (101) and the right half U-shaped core (102) of the U-shaped core (100) respectively; slider (200) still with stop device (400) can be dismantled and be connected, hydro-cylinder connector (300) can be dismantled with outside hydro-cylinder and be connected.

5. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 4, characterized in that: the limiting device (400) comprises a spring (401), a connecting rod (402), a supporting spring stop block (403) and a limiting nut (404); prop spring dog (403) and pass through the screw fastening and be in on slider (200) bottom, and still the cover is established on connecting rod (402), connecting rod (402) pass prop spring dog (403), and connecting rod (402) one end with guide holder (107) screw-thread fit connects, the other end with stop nut (404) screw-thread fit connects, spring (401) cover is established on connecting rod (402) to be located between guide holder (107) and prop spring dog (403), and spring (401) one end with guide holder (107) looks butt, the other end with prop spring dog (403) looks butt, spring (401) are used for driving U-shaped core (100) at slider (200) and are loosed core initial state, exert pressure to half left U-shaped core lamella (103) and half right U-shaped core lamella (104) on the left side of U-shaped core (100), make half left U-shaped core piece (103) and half U-shaped core (104) along slider (200) not along with slider (200) core (103) on the right side The core pulling direction of the core (100) is moved.

6. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 5, characterized in that: the guide device is characterized in that one side, facing the connecting rod (402), of the guide seat (107) is provided with a threaded through hole (107b), one side, facing away from the connecting rod (402), of the guide seat (107) is provided with two pin holes (107c), the threaded through hole (107b) is used for being in threaded fastening fit with the connecting rod (402), the pin holes (107c) are used for being in fastening fit with guide pins (110), and the guide pins (110) are used for being in sliding fit with cavity counter bores arranged on a movable mould cavity (601).

7. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 6, characterized in that:

the guide seat (107) is further provided with a T-shaped sliding groove (107a), the T-shaped sliding groove (107a) is perpendicular to the U-shaped sliding groove (501) in the support (500), and the T-shaped sliding groove (107a) is used for being in sliding fit with the lower ends of the left T-shaped block (105) and the right T-shaped block (106) of the U-shaped mold core (100).

8. The compression spring and power connection bidirectional T-shaped groove self-adaptive core pulling structure according to claim 7, characterized in that:

the sliding direction of the left T-shaped block (105) and the right T-shaped block (106) of the U-shaped core (100) in the T-shaped sliding groove (107a) in the guide seat (107) is vertical to the sliding direction of the guide seat (107) of the U-shaped core (100) in the U-shaped sliding groove (501) in the bracket (500);

the sliding direction of a guide seat (107) of the U-shaped core (100) in a U-shaped sliding groove (501) in the support (500) is consistent with the moving directions of a left half U-shaped core (101), a left half U-shaped core clack (103), a right half U-shaped core (102) and a right half U-shaped core clack (104) of the U-shaped core (100) and the U-shaped sliding groove (501) of the sliding block (200), the oil cylinder connector (300) and the limiting device (400) in the support (500), and is the same as the core pulling direction.

9. The compression spring power-linkage bidirectional T-shaped groove self-adaptive core pulling structure according to any one of claims 1 to 8, characterized in that:

one side of the left half U-shaped core (101) facing the right half U-shaped core (102) and one side of the right half U-shaped core (102) facing the left half U-shaped core (101) are respectively provided with an inclined dovetail groove (108);

an inclined dovetail protrusion (109) is respectively arranged on one side of the left half U-shaped core petal block (103) facing the left half U-shaped core (101) and one side of the right half U-shaped core petal block (104) facing the right half U-shaped core (102);

the left half U-shaped core petal block (103) is correspondingly and slidably arranged in an inclined dovetail groove (108) arranged on the left half U-shaped core (101) through an inclined dovetail protrusion (109) arranged on the left half U-shaped core petal block, and is mutually connected with the left half U-shaped core (101) in a sliding fit manner;

the right half U-shaped core petal block (104) is correspondingly and slidably arranged in an inclined dovetail groove (108) formed in the right half U-shaped core (102) through an inclined dovetail protrusion (109) formed in the right half U-shaped core petal block, and is connected with the right half U-shaped core (102) in a sliding fit mode.

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