Tunnel core-pulling retaining mechanism for movable mold oil cylinder of injection mold

Abstract

The utility model relates to the technical field of injection mold structures, in particular to an injection mold moving mold oil cylinder tunnel core-pulling retaining mechanism which comprises a plate body and a mounting component, the mounting assembly comprises a wedge block, an inclined core-pulling body, a mounting screw rod, an oil cylinder, a seat body, square iron, a shovel base, a fastening screw rod and a connecting block, the shovel base is slidably mounted on one side of the plate body, the inclined core-pulling body is slidably connected with the plate body and the shovel base, the wedge block is slidably mounted on one side, close to the inclined core-pulling body, of the shovel base, and the mounting screw rod is in threaded connection with the shovel base; the square iron is fixedly connected with the plate body and slidably connected with the shovel base, the fastening screw rod is in threaded connection with the plate body and located on the side, away from the shovel base, of the plate body, the base body is in threaded connection with the fastening screw rod and located on the side, close to the plate body, of the fastening screw rod, and the oil cylinder is fixedly connected with the base body. And the output end of the oil cylinder is connected with the connecting block, so that the supporting effect on the inclined core pulling body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold structure technical field especially relates to a kind of injection mold movable die oil cylinder tunnel core-pulling retreat prevention mechanism. BACKGROUND

[0002] Injection molding is also known as injection molding, which is a processing method for obtaining plastic products of desired shape and size by injecting plastic raw materials into a mold after high-temperature melting and cooling and solidification. For some injection molded products, the core needs to be withdrawn before the mold is opened, and the core needs to be inserted before the mold is closed. In the process of injection molding, the inclined core body is likely to retract due to the pressure of the injection pressure, which affects the injection molding and thus affects the use effect of the device.

[0003] The prior art CN217319144U discloses a retreat prevention mechanism for an inclined extraction oil cylinder, which includes an oil cylinder, an inclined extraction auxiliary block, an inclined core body, a first inclined surface, a second inclined surface, a mold core, a mold, a wedge block, a straight surface, and a locking angle. The piston rod of the oil cylinder drives the inclined extraction auxiliary block to extend, which in turn pushes the inclined core body to tilt and extend towards the mold. The first inclined surface pushes the second inclined surface to slide, which in turn tilts and extends the inclined core body towards the mold. After injection molding, the wedge block fixed on the first inclined surface provides support for the inclined core body, and the straight surface of the wedge block and the locking angle of the inclined core body are in contact. The straight surface supports the locking angle to prevent the inclined core body from retracting due to high injection pressure, which affects the injection molding and thus improves the use effect of the device.

[0004] In normal use, the wedge block fixed on the first inclined surface provides support for the inclined core body. The prior art does not facilitate the replacement of the wedge block according to the support effect on the inclined core body, which affects the support effect on the inclined core body. Utility model content

[0005] The utility model aims to provide a kind of injection mold movable die oil cylinder tunnel core-pulling retreat prevention mechanism, solve the problem that the wedge block fixed on the first inclined surface provides support for the inclined core body, and the prior art does not facilitate the replacement of the wedge block according to the support effect on the inclined core body, which affects the support effect on the inclined core body.

[0006] The utility model provides a kind of injection mold movable die oil cylinder tunnel core pulling retreat mechanism, including plate body and installation component;The installation component includes wedge block, inclined core-pulling body, installation screw rod, oil cylinder, seat body, square iron, shovel base, fastening screw rod and connecting block, the shovel base is slidably installed in one side of the plate body, the inclined core-pulling body is slidably connected with the plate body, and is slidably connected with the shovel base, the wedge block is slidably installed in the shovel base side close to the inclined core-pulling body, the installation screw rod is threadedly connected with the shovel base, and is threadedly connected with the wedge block, the connecting block is clamped in the shovel base side away from the plate body, the square iron is fixedly connected with the plate body, and is slidably connected with the shovel base, the fastening screw rod is threadedly connected with the plate body, and located in the plate body side away from the shovel base, the seat body is threadedly connected with the fastening screw rod, and located in the fastening screw rod side close to the plate body, the oil cylinder is fixedly connected with the seat body, and the output end of the oil cylinder is connected with the connecting block.

[0007] Wherein, the wedge block has first internal thread hole, the first internal thread hole is located wedge block side close to the installation screw rod, and is matched with the installation screw rod;The shovel base has mounting hole, the mounting hole is located the shovel base side close to the installation screw rod, and is matched with the installation screw rod.

[0008] Wherein, the installation component further includes limiting rod and fixed screw rod, the limiting rod is slidably connected with the seat body, and is slidably connected with the shovel base;The fixed screw rod is threadedly connected with the shovel base, and abuts on the limiting rod.

[0009] Wherein, the shovel base has second internal thread hole, the second internal thread hole is located the shovel base side close to the fixed screw rod, and is matched with the fixed screw rod.

[0010] Wherein, the installation component further includes positioning rod and positioning cylinder, the positioning cylinder is fixedly connected with the seat body, and located in the seat body side close to the plate body;The positioning rod is slidably connected with the positioning cylinder, and is fixedly connected with the plate body.

[0011] The utility model discloses a kind of injection mold movable die oil cylinder tunnel core stop mechanism, rotate the installation screw rod, the installation screw rod passes through the mounting hole and the first internal thread hole is connected, the wedge tight block is installed in the groove of the shovel base, otherwise disassembles, it is convenient to replace the wedge tight block, the oil cylinder drives the shovel base and drives the wedge tight block to move, while the shovel base moves and drives the restriction rod moves on the seat body, improve the stability of the shovel base when moving, drive the oblique core body to extend, cooperate with the plate body and form injection molding cavity, in injection molding process the wedge tight block and the shovel base cooperate, the bottom plane of the oblique core body and the inclined surface of the oblique core body are supported, the movement direction of the bottom plane of the oblique core body and the wedge tight block plane and the oil cylinder core is identical, avoid the oblique core body in injection molding process due to injection molding pressure big to the oil cylinder oil pressure produce slight backoff, and because the oil cylinder backoff direction and the bottom plane of the oblique core body and the wedge tight block plane direction are identical, the oblique core body will not produce backoff, just the oil cylinder backoff, do not affect the sealing effect when core-pulling, avoid product flash or broken difference to cause injection molding part to be bad, to improve the support effect of the oblique core body. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows.

[0013] Figure 1 It is the overall structure schematic diagram of the injection mold movable die oil cylinder tunnel core stop mechanism of the first embodiment of the utility model.

[0014] Figure 2 It is the structure schematic diagram of wedge tight block and shovel base.

[0015] Figure 3 It is the structure schematic diagram of oblique core body and shovel base.

[0016] Figure 4 It is the structure schematic diagram of the utility model Figure 3 The enlarged view of A.

[0017] Figure 5 It is the structure schematic diagram of shovel base and connecting block.

[0018] Figure 6 It is the structure schematic diagram of fixed screw rod and second internal thread hole.

[0019] Figure 7 It is the structure schematic diagram of positioning rod and positioning cylinder.

[0020] In the figure: 101-plate body, 102-wedge block, 103-oblique core-pulling body, 104-mounting screw, 105-oil cylinder, 106-seat body, 107-square iron, 108-shovel base, 109-fastening screw, 110-connecting block, 111-limiting rod, 112-fixing screw, 113-second internal threaded hole, 114-first internal threaded hole, 115-mounting hole, 201-positioning rod, 202-positioning cylinder. DETAILED DESCRIPTION

[0021] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model and cannot be understood as limiting the utility model.

[0022] The first embodiment of the application is:

[0023] Please refer to Figures 1-5 , Figure 1 is the overall structure schematic diagram of the movable mold oil cylinder tunnel core-pulling retreat-stop mechanism of the injection mold of the first embodiment of the utility model, Figure 2 is the structure schematic diagram of the wedge block and the shovel base, Figure 3 is the structure schematic diagram of the oblique core-pulling body and the shovel base, Figure 4 is the structure schematic diagram of the Figure 3 is the enlarged view of A, Figure 5 is the structure schematic diagram of the shovel base and the connecting block, Figure 6 is the structure schematic diagram of the fixing screw and the second internal threaded hole, the utility model provides a kind of injection mold movable mold oil cylinder 105 tunnel core-pulling retreat-stop mechanism, including plate body 101 and installation component;The installation component includes wedge block 102, oblique core-pulling body 103, mounting screw 104, oil cylinder 105, seat body 106, square iron 107, shovel base 108, fastening screw 109, connecting block 110, limiting rod 111 and fixing screw 112, the shovel base 108 has second internal threaded hole 113, the wedge block 102 has first internal threaded hole 114, the shovel base 108 has mounting hole 115, the prior art is not replaced according to the support effect of oblique core-pulling body 103, the specification of wedge block 102 is replaced, to affect the support effect of oblique core-pulling body 103 Problem, it can be understood that the foregoing scheme can be used in the case that wedge block 102 fixed on the first inclined plane provides support for oblique core-pulling body 103.

[0024] For this specific embodiment, the wedge block 102 is installed in the groove of the shovel base 108 by rotating the mounting screw 104, and vice versa for disassembly, facilitating replacement of the wedge block 102. The oil cylinder 105 drives the shovel base 108 to move the wedge block 102, drives the inclined core body 103 to extend, and cooperates with the plate body 101 to form an injection molding cavity. During the injection molding process, the wedge block 102 and the shovel base 108 cooperate to support the bottom of the inclined core body 103. When the inclined core body 103 slightly retreats during the injection molding process, the wedge block 102 support surface is converted into a planar motion, so that the inclined core body 103 does not change relative to the sealing position during the injection molding process, avoiding the displacement of the sealing surface caused by the retreat of the inclined core body 103, resulting in poor injection molding, thereby improving the support effect of the inclined core body.

[0025] The spade base 108 is slidingly installed on one side of the plate body 101, the inclined core-pulling body 103 is slidingly connected with the plate body 101 and the spade base 108, the wedge block 102 is slidingly installed on one side of the spade base 108 close to the inclined core-pulling body 103, the mounting screw 104 is threadedly connected with the spade base 108 and threadedly connected with the wedge block 102, the connecting block 110 is clamped on one side of the spade base 108 away from the plate body 101, the square iron 107 is fixedly connected with the plate body 101 and slidingly connected with the spade base 108, the fastening screw 109 is threadedly connected with the plate body 101 and located on one side of the plate body 101 away from the spade base 108, the seat body 106 is threadedly connected with the fastening screw 109 and located on one side of the fastening screw 109 close to the plate body 101, the oil cylinder 105 is fixedly connected with the seat body 106, the output end of the oil cylinder 105 is connected with the connecting block 110, the outer side of the inclined core-pulling body 103 is slidingly connected with the inner side upper portion of the plate body 101, the left side bottom of the spade base 108 is designed with a plurality of mounting holes, the left side top of the spade base 108 is designed with a plurality of grooves, the right side of the spade base 108 is designed with a T-shaped groove, the outer side of the spade base 108 is slidingly connected with the inner side of the plate body 101, the bottom of the wedge block 102 is designed with a first internal thread hole, the wedge block 102 has a plurality of, the mounting screw 104 has a plurality of, the outer side of the top end of the mounting screw 104 is designed with an external thread, the mounting screw 104 is connected with the first internal thread hole of the wedge block 102 through the mounting hole of the spade base 108, the right side middle portion of the seat body 106 is designed with a through hole, the right side two ends of the seat body 106 are designed with a plurality of through holes, the fastening screw 109 has a plurality of, the fastening screw 109 is installed on the right side of the plate body 101 through the through hole of the seat body 106, the right end of the connecting block 110 is designed with a groove, the outer side of the connecting block 110 is clamped in the T-shaped groove of the spade base 108, the output end of the oil cylinder 105 is connected with the groove of the connecting block 110 through the through hole of the seat body 106, and the top end of the square iron 107 is slidingly connected with the bottom of the spade base 108 to support the spade base 108, the wedge block 102 is installed in the groove of the spade base 108 by rotating the mounting screw 104, and vice versa, so that the wedge block 102 is replaced, the oil cylinder 105 drives the spade base 108 to drive the wedge block 102 to move, drives the inclined core-pulling body 103 to extend, and cooperates with the plate body 101 to form an injection molding cavity, the wedge block 102 and the spade base 108 cooperate during the injection molding process to support the bottom of the inclined core-pulling body 103, when the inclined core-pulling body 103 slightly retreats during the injection molding process, the wedge block 102 support surface is converted into a plane motion, so that the relative sealing position of the inclined core-pulling body 103 is unchanged during the injection molding process,Avoiding the back of the inclined core body 103 causes the seal surface to shift and produce poor injection, thereby improving the support effect of the inclined core body.

[0026] Secondly, the wedge block 102 has a first internal threaded hole 114 located on the side of the wedge block 102 close to the mounting screw 104 and matched with the mounting screw 104; the shovel base 108 has a mounting hole 115 located on the side of the shovel base 108 close to the mounting screw 104 and matched with the mounting screw 104, the first internal threaded hole 114 is multiple, the first internal threaded hole 114 is located at the bottom of the wedge block 102, the mounting hole 115 is multiple, the mounting hole 115 is located at the bottom left side of the shovel base 108, the mounting screw 104 passes through the mounting hole 115 and connects with the first internal threaded hole 114, and the wedge block 102 is installed on the groove of the shovel base 108, so as to realize the connection between the mounting screw 104 and the shovel base 108 and the wedge block 102.

[0027] Then, the limiting rod 111 is in sliding connection with the seat body 106 and in sliding connection with the shovel base 108; the fixed screw 112 is in threaded connection with the shovel base 108 and abuts against the limiting rod 111, the right side of the shovel base 108 is designed with multiple fixing holes, the right side of the shovel base 108 is designed with multiple second internal threaded holes, the right side of the seat body 106 is designed with multiple sliding holes, the limiting rod 111 is multiple, the left end of the limiting rod 111 is designed with a clamping groove on the outer side, the right end of the limiting rod 111 is in sliding connection with the sliding hole of the seat body 106, the fixed screw 112 is multiple, the left end of the fixed screw 112 is designed with an external thread on the outer side, the fixed screw 112 is connected with the second internal threaded hole of the shovel base 108, by rotating the fixed screw 112, the fixed screw 112 abuts against the clamping groove of the limiting rod 111, the limiting rod 111 is installed in the fixing hole of the shovel base 108, and the shovel base 108 drives the limiting rod 111 to move on the seat body 106 when moving, so as to improve the stability of the shovel base 108 when moving.

[0028] Then, the shovel base 108 has a second internal threaded hole 113 located on the side of the shovel base 108 close to the fixed screw 112 and matched with the fixed screw 112, the second internal threaded hole 113 is multiple, the second internal threaded hole 113 is located on the right side of the shovel base 108, the external thread of the fixed screw 112 is connected with the second internal threaded hole 113, the fixed screw 112 abuts against the clamping groove of the limiting rod 111, so as to realize the connection between the fixed screw 112 and the shovel base 108.

[0029] When the tunnel core-pulling retreat-preventing mechanism of the movable die oil cylinder 105 of the injection mold of the embodiment is used, the mounting screw rod 104 is rotated, the mounting screw rod 104 is connected with the first internal threaded hole 114 through the mounting hole 115, the wedge block 102 is mounted in the groove of the shovel base 108, and vice versa, so that the wedge block 102 is disassembled and replaced, the wedge block 102 is replaced, the oil cylinder 105 drives the shovel base 108 to move the wedge block 102, and the shovel base 108 moves the limiting rod 111 on the seat body 106, the stability of the shovel base 108 during movement is improved, the inclined core-pulling body 103 is driven to extend and cooperate with the plate body 101 to form an injection molding cavity, the wedge block 102 and the shovel base 108 cooperate during injection molding to support the bottom of the inclined core-pulling body 103, the slight retreat of the oil pressure of the oil cylinder 105 due to large injection pressure during injection molding is avoided, the retreat direction of the oil cylinder 105 is consistent with the bottom plane of the inclined core-pulling body 103 and the plane direction of the wedge block 102, the inclined core-pulling body 103 does not retreat, only the oil cylinder 105 retreats, the sealing effect during core pulling is not affected, the product flash or gap is avoided to cause injection molding defects, and therefore the support effect of the inclined core-pulling body 103 is improved.

[0030] The second embodiment of the application is:

[0031] Please refer to Figure 7 , Figure 7 It is a structural schematic view of the positioning rod and the positioning cylinder, and the mounting assembly further comprises a positioning rod 201 and a positioning cylinder 202 on the basis of the first embodiment.

[0032] For the specific embodiment, the seat body 106 drives the positioning cylinder 202 to move on the positioning rod 201, the position of the seat body 106 is limited, and therefore the position of the seat body 106 is limited.

[0033] The positioning cylinder 202 is fixedly connected with the seat body 106 and located on the side of the seat body 106 close to the plate body 101; the positioning rod 201 is slidably connected with the positioning cylinder 202 and fixedly connected with the plate body 101; the right side of the seat body 106 is designed with positioning holes; the positioning cylinder 202 is provided with a plurality of positioning cylinders; the end of the positioning cylinder 202 is designed with a sliding hole; the outer side of the positioning cylinder 202 is fixedly connected with the positioning holes of the seat body 106; the positioning rod 201 is provided with a plurality of positioning rods; the left end of the positioning rod 201 is fixedly connected with the right side of the plate body 101 through the sliding hole of the positioning cylinder 202; the seat body 106 drives the positioning cylinder 202 to move on the positioning rod 201, so that the position of the seat body 106 is limited, thereby facilitating the limitation of the position of the seat body 106.

[0034] When the injection mold moving die oil cylinder 105 tunnel core retreat mechanism of the embodiment is used, the seat body 106 drives the positioning cylinder 202 to move on the positioning rod 201, so that the position of the seat body 106 is limited, thereby facilitating the limitation of the position of the seat body 106.

[0035] The above disclosure is only one or more preferred embodiments of the application, which cannot limit the scope of the application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the application still belong to the scope covered by the application.

Claims

1. A tunnel-type core-pulling and anti-reverse mechanism for a moving mold cylinder in an injection mold, comprising a plate body, characterized in that, It also includes installation components; The installation assembly includes a wedge block, an inclined core-pulling body, an installation screw, a hydraulic cylinder, a base, a square iron, a shovel base, a fastening screw, and a connecting block. The shovel base is slidably installed on one side of the plate. The inclined core-pulling body is slidably connected to the plate and also to the shovel base. The wedge block is slidably installed on the side of the shovel base near the inclined core-pulling body. The installation screw is threadedly connected to the shovel base and also to the wedge block. The connecting block is engaged with the side of the shovel base away from the plate. The square iron is fixedly connected to the plate and slidably connected to the shovel base. The fastening screw is threadedly connected to the plate and located on the side of the plate away from the shovel base. The base is threadedly connected to the fastening screw and located on the side of the fastening screw near the plate. The hydraulic cylinder is fixedly connected to the base, and its output end is connected to the connecting block.

2. The injection mold moving mold cylinder tunnel core pulling and anti-reverse mechanism as described in claim 1, characterized in that, The wedge block has a first internal threaded hole, which is located on the side of the wedge block near the mounting screw and engages with the mounting screw; the shovel base has a mounting hole, which is located on the side of the shovel base near the mounting screw and engages with the mounting screw.

3. The injection mold moving mold cylinder tunnel core pulling and anti-reverse mechanism as described in claim 1, characterized in that, The mounting assembly further includes a limiting rod and a fixing screw. The limiting rod is slidably connected to the base and to the shovel base. The fixing screw is threadedly connected to the shovel base and abuts against the limiting rod.

4. The injection mold moving mold cylinder tunnel core pulling and anti-reverse mechanism as described in claim 3, characterized in that, The shovel base has a second internal threaded hole, which is located on the side of the shovel base near the fixing screw and engages with the fixing screw.

5. The injection mold moving mold cylinder tunnel core pulling and anti-reverse mechanism as described in claim 1, characterized in that, The mounting assembly further includes a positioning rod and a positioning cylinder. The positioning cylinder is fixedly connected to the base and located on the side of the base closer to the plate. The positioning rod is slidably connected to the positioning cylinder and fixedly connected to the plate.

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