Inclined core-pulling structure of engine connector die casting die

Abstract

The utility model relates to the technical field of die-casting dies, in particular to an inclined core-pulling structure of an engine connector die-casting die, which comprises a sleeve plate, a die core fixed on the sleeve plate and an inclined core-pulling mechanism obliquely fixed on the sleeve plate, the inclined core pulling mechanism comprises a driving mechanism fixed to the sleeve plate, a pulling core slidably connected into the sleeve plate and a connecting rod located between the pulling core and the driving mechanism. A loose core wear-resistant sleeve and a connecting rod wear-resistant sleeve are also obliquely fixed in the sleeve plate; the rod part of the loose core is in sliding connection with an inner hole of the loose core wear-resistant sleeve; and the rod part of the connecting rod is in sliding connection with an inner hole of the connecting rod wear-resistant sleeve. The scheme is applicable to a connector with an inclined deep hole, and excessive wear caused by direct contact between the loose core and the connecting rod and the sleeve plate can be avoided, so that the frictional resistance is reduced, the service life of a mold is prolonged, and the replacement frequency and the maintenance cost of the mold are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of die casting mould, specifically is a kind of oblique core-pulling structure of engine connector die casting mould. BACKGROUND

[0002] Automobile engine is the core component of automobile, it provides power for automobile, determines the power performance, economy, environmental protection and other performances of automobile. There are more important connectors around engine, these connectors are used to connect each component, can ensure the signal transmission of each component, so that engine can accurately control various working conditions, realize power output and distribution. And the shape structure of connector is complex, usually adopts die casting process to manufacture in actual production, therefore, the structure design of die casting mould not only determines the dimensional accuracy and product quality of die casting product, simultaneously for improving production efficiency, reducing enterprise cost has extremely important role.

[0003] The mould structure corresponding to different connectors is also different, such as prior art "a automobile engine shock absorber connector mould" (announcement number: CN206561102U), special die casting mould is designed for shock absorber connector, and in order to prevent product deformation in core-pulling process, forming slider is set to two sections, and the front end extends a section of core-pulling inwards, so that it can be pulled out in two times step by step, reduce the holding force of each time, to avoid the purpose of product deformation. But the prior art still has the following technical problems:

[0004] 1, the scope of application of the mould of prior art is limited, not suitable for connector with oblique deep hole, and due to the long core-pulling, in the process of pulling out and extending, the friction is larger, after long time use, the wear of mould can be more serious, and the precision of product deep hole forming is easily reduced.

[0005] 2, the mould of prior art cannot realize the cooling of core-pulling, the temperature of core-pulling part cannot be effectively controlled, and the deep hole of die casting product is deformed in core-pulling process, so as to cause product to appear waste product, reduce product qualified rate. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of oblique core-pulling structure of engine connector die casting mould, can solve the problem that the mould of prior art is not suitable for connector with oblique deep hole, and mould is easily worn to cause product forming precision to be poor.

[0007] The application provides the following technical scheme: a kind of oblique core-pulling structure of engine connector die casting mould, including sleeve plate, mould core fixed on sleeve plate and oblique fixed on sleeve plate core-pulling mechanism;

[0008] The oblique core-pulling mechanism includes driving mechanism fixed on the sleeve plate, core-pulling slidingly connected inside the sleeve plate and connecting rod located between core-pulling and driving mechanism.

[0009] The sleeve plate is internally further fixed with a core-pulling wear-resistant sleeve and a connecting rod wear-resistant sleeve, the rod part of the core-pulling is in sliding connection with the inner hole of the core-pulling wear-resistant sleeve, and the rod part of the connecting rod is in sliding connection with the inner hole of the connecting rod wear-resistant sleeve.

[0010] Beneficial effects:

[0011] The frictional resistance is reduced, the abrasion is reduced, and the mold life is prolonged. The scheme can be applied to the connector with the oblique deep hole. The driving mechanism controls the core-pulling to complete the action of pulling in and pulling out by driving the connecting rod. The connecting rod will slide with the core-pulling. When the core-pulling action is frequently performed, the wear-resistant sleeve can reduce the frictional force of the core-pulling and the connecting rod in the movement process, avoids excessive abrasion caused by the direct contact of the core-pulling and the connecting rod with the sleeve plate, makes the pulling-out and insertion actions of the core-pulling more smooth, effectively avoids the problems of jamming, stalling and the like of the core-pulling in the movement process, improves the reliability and efficiency of the core-pulling action, reduces the production interruption and product defects caused by the core-pulling failure, thereby prolongs the service life of the key part of the mold, and reduces the replacement frequency and maintenance cost of the mold.

[0012] Further, the core-pulling is internally provided with an insertion type point cooling pipe, and the cooling liquid inlet and outlet of the insertion type point cooling pipe is located at one end of the connecting rod.

[0013] Beneficial effects: In the process of die casting, the core-pulling contacts with the high-temperature metal liquid and absorbs a large amount of heat. Through the precise cooling of the point cooling pipe, the temperature of the core-pulling can be effectively reduced, the problems of deformation and aggravated abrasion caused by the overheating of the core-pulling are prevented, the size precision and quality of the product after die casting are ensured, and the cooling liquid inlet and outlet are concentrated at one end of the connecting rod, so that the inspection and maintenance of the cooling liquid pipeline and the point cooling pipe are more convenient in the process of mold maintenance and repair.

[0014] Further, the sleeve plate is internally further fixed with a limiting block, and the limiting block is used for limiting the axial movement of the wear-resistant sleeve.

[0015] Beneficial effects: In the long-term use process of the mold, the core-pulling frequently slides in the wear-resistant sleeve and generates a certain axial force on the wear-resistant sleeve. The limiting block can effectively block the axial force, so that the wear-resistant sleeve is always kept at the predetermined position, the movement path of the core-pulling is ensured to be accurate and correct, and the stability and reliability of the whole oblique core-pulling structure are ensured.

[0016] Further, the driving mechanism comprises a bracket fixed on the sleeve plate and an oil cylinder fixed on the bracket, and the piston rod end of the oil cylinder is fixedly connected with the connecting rod.

[0017] Beneficial effect: the oil cylinder as a driving element can provide driving force, ensuring that the core can smoothly complete the extraction and insertion action, and the oil cylinder is directly fixed with the connecting rod through the piston rod, thereby effectively stably transmitting the power generated by the oil cylinder to the core, making the movement of the core more accurate and reliable.

[0018] Further, a travel switch is fixed on the bracket, and a bump block is fixed on the connecting rod, and the bump block is used for contacting and sensing the travel switch.

[0019] Beneficial effect: during the core action, the cooperation of the travel switch and the bump block can accurately determine the travel end point of the core, when the connecting rod drives the core to move to the preset position, the bump block will contact the travel switch, and the travel switch will send a signal, which can be fed back to the control system of the die casting equipment, and the control system can stop the action of the oil cylinder in time according to the signal, so that the core can accurately reach the predetermined position, and the size precision and forming quality of the engine connector die casting and the safety of the whole equipment mold are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure top view of the utility model.

[0021] Figure 2 It is Figure 1 A-A sectional view.

[0022] Figure 3 It is Figure 2 The isometric view of the utility model after removing the sleeve plate and the mold core.

[0023] Figure 4 It is Figure 3 The isometric view of the core, the connecting rod and the oil cylinder. DETAILED DESCRIPTION

[0024] The following will be further described in detail through specific embodiments:

[0025] The marks in the drawings of the specification include: sleeve plate 1, mold core 2, bracket 3, oil cylinder 4, piston rod 41, core 5, core wear-resistant sleeve 6, connecting rod wear-resistant sleeve 7, bump block 8, travel switch 9, point cooling pipe 10, connecting rod 11, mounting hole 111, fixed block 12, limiting block 13.

[0026] Example one

[0027] As Figures 1 to 4 shown, an inclined core structure of an engine connector die casting mold, comprising a sleeve plate 1, a mold core 2 fixed at the center of the sleeve plate 1 and an inclined core mechanism fixed obliquely on the sleeve plate 1.

[0028] As Figure 2As shown, the inclined core-pulling mechanism includes a driving mechanism fixed on the sleeve plate 1, a core 5 slidingly connected inside the sleeve plate 1, and a connecting rod 11 between the core 5 and the driving mechanism, the end of the core 5 extends obliquely into the mold core 2. The driving mechanism includes a bracket 3 fixed on the sleeve plate 1 and a cylinder 4 fixed on the bracket 3, the end of the piston rod 41 of the cylinder 4 is fixedly connected with the connecting rod 11. As shown Figure 3 and Figure 4 As shown, the bracket 3 is also fixed with a travel switch 9, the connecting rod 11 is provided with a mounting hole 111, and a bump block 8 is fixed in the mounting hole 111 by a screw, the bump block 8 is used to contact and sense the travel switch 9. During the action of the core 5, the bump block 8 will follow the action and touch the contact of the travel switch 9, so that the travel switch 9 sends a signal, which can be fed back to the control system of the die casting equipment, and the control system can stop the action of the cylinder 4 in time according to the signal, so as to ensure that the core 5 accurately reaches the predetermined position, and ensure the size precision and forming quality of the engine connector die casting and the safety of the whole equipment mold. As a driving element, the cylinder 4 can provide driving force to ensure that the core 5 can smoothly complete the pulling-out and inserting actions, and the cylinder 4 is directly fixed with the connecting rod 11 through the piston rod 41, so that the power generated by the cylinder 4 is stably transmitted to the core 5, and the movement of the core 5 is more accurate and reliable.

[0029] As shown Figure 2 The core 5 is provided with an insertion type point cooling pipe 10 inside, and the cooling liquid inlet and outlet of the insertion type point cooling pipe 10 is located at one end of the connecting rod 11. During the die casting process, the core 5 contacts with high-temperature metal liquid and absorbs a large amount of heat, and through the accurate cooling of the point cooling pipe 10, the temperature of the core 5 can be effectively reduced, so as to prevent problems such as deformation and accelerated wear caused by overheating of the core 5, and ensure the size precision and quality of the product after die casting. The cooling liquid inlet and outlet is concentrated at one end of the connecting rod 11, so that the inspection and maintenance of the cooling liquid pipeline and the point cooling pipe 10 is more convenient during the mold maintenance and repair process.

[0030] As shown Figure 2 The sleeve plate 1 is obliquely fixed with a core wear-resistant sleeve 6 and a connecting rod wear-resistant sleeve 7 inside, the rod part of the core 5 is slidingly connected with the inner hole of the core wear-resistant sleeve 6, and the rod part of the connecting rod 11 is slidingly connected with the inner hole of the connecting rod wear-resistant sleeve 7. The sleeve plate 1 is also fixed with a limiting block 13, the limiting block 13 is used to limit the axial movement of the wear-resistant sleeve, and the bottom of the limiting block 13 is provided with a fixing block 12, the fixing block 12 is used to fix the limiting block 13. During the long-term use of the mold, the core 5 frequently slides in the wear-resistant sleeve, which will generate a certain axial force on the wear-resistant sleeve, and the limiting block 13 can effectively block this axial force, so that the wear-resistant sleeve always remains at the predetermined position, ensuring that the movement path of the core 5 is accurate and reliable, and further ensuring the stability and reliability of the whole inclined core-pulling mechanism.

[0031] The method for using the mold is as follows: when the oil cylinder 4 of the driving mechanism works, the piston rod 41 of the oil cylinder 4 extends or retracts, the core pulling 5 is driven to slide obliquely in the core pulling wear-resistant sleeve 6 inside the cover plate 1 through the connecting rod 11 fixedly connected with the piston rod 41, and the connecting rod 11 synchronously slides in the connecting rod wear-resistant sleeve 7 during the sliding of the core pulling 5, so as to reduce friction and wear. The movement of the connecting rod 11 drives the fixed bump block 8 to follow the movement, when the core pulling 5 moves to the predetermined position, the bump block 8 touches the contact of the travel switch 9 on the support 3, the travel switch 9 sends a signal and feeds back to the control system of the die casting equipment. After receiving the signal, the control system stops the action of the oil cylinder 4 in time, ensures that the core pulling 5 accurately reaches the predetermined position, guarantees the size precision and forming quality of the die casting, and guarantees the safety of the whole equipment mold.

[0032] The above is only an embodiment of the utility model, the utility model is not limited to this embodiment case related field, the specific structure and characteristics and other common knowledge in the scheme are not described too much herein. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a number of deformations and improvements can also be made, which should also be considered as the protection scope of the utility model, which will not affect the effect and practicality of the utility model. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A slanted core-pulling structure for an engine connector die-casting mold, characterized in that: The device includes a sleeve plate, a mold core fixed to the sleeve plate, and an inclined core-pulling mechanism fixed to the sleeve plate at an angle. The inclined core-pulling mechanism includes a drive mechanism fixed to the sleeve plate, a core puller slidably connected inside the sleeve plate, and a connecting rod located between the core puller and the drive mechanism. Inside the sleeve plate, a core puller wear-resistant sleeve and a connecting rod wear-resistant sleeve are also obliquely fixed. The rod part of the core puller is slidably connected to the inner hole of the core puller wear-resistant sleeve, and the rod part of the connecting rod is slidably connected to the inner hole of the connecting rod wear-resistant sleeve.

2. The oblique core-pulling structure of an engine connector die-casting mold according to claim 1, characterized in that: The core-pulling mechanism is equipped with an insertable cooling pipe, and the coolant inlet and outlet of the insertable cooling pipe are located at one end of the connecting rod.

3. The oblique core-pulling structure of an engine connector die-casting mold according to claim 2, characterized in that: A limiting block is also fixed inside the sleeve, which is used to restrict the axial movement of the wear-resistant sleeve.

4. The oblique core-pulling structure of an engine connector die-casting mold according to claim 3, characterized in that: The drive mechanism includes a bracket fixed to the sleeve plate and a hydraulic cylinder fixed to the bracket, with the piston rod end of the hydraulic cylinder fixedly connected to the connecting rod.

5. The oblique core-pulling structure of an engine connector die-casting mold according to claim 4, characterized in that: A limit switch is also fixed on the bracket, and a contact block is fixed on the connecting rod. The contact block is used to sense contact with the limit switch.

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