Mold core-pulling device and core-pulling method

Abstract

The application discloses a mold accelerating core-pulling device, which comprises a core-pulling slider and a driving gear capable of moving linearly and rotating, and a core-pulling rack capable of engaging with the driving gear is arranged on the core-pulling slider. The mold accelerating core-pulling device can greatly reduce the stroke of the driving gear and the corresponding driving mechanism, reduce the space occupied by the device as a whole, and further reduce the size of the mold as a whole, so that the manufacturing cost of products is reduced. The application further discloses a core-pulling method of the mold accelerating core-pulling device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of molds, in particular, the present application relates to a mold accelerating core-pulling device and a core-pulling method. BACKGROUND

[0002] In the prior art, the mold core-pulling adopts the driving mode of oil cylinder or air cylinder, wherein the driving stroke of the oil cylinder or air cylinder used by the core-pulling structure with long reverse buckling amount is increased synchronously, the number of its external formations is increased, and the overall space layout occupied by the mold is increased.

[0003] The corresponding mold development cost is high, the molding equipment used for mold production is increased, unnecessary equipment kinetic energy consumption is wasted, and the product manufacturing cost is increased.

[0004] Therefore, the prior art has the following problems:

[0005] 1. The space layout of the existing core-pulling structure with long reverse buckling amount is large;

[0006] 2. The core-pulling action time of the existing core-pulling structure with long reverse buckling amount is long;

[0007] 3. The overall size of the existing core-pulling structure with long reverse buckling amount is large;

[0008] 4. The product manufacturing cost of the existing core-pulling structure with long reverse buckling amount is high. SUMMARY

[0009] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a mold accelerating core-pulling device, which aims to reduce the occupied space.

[0010] In order to solve the above technical problems, the technical scheme adopted by the present application is: a mold accelerating core-pulling device, comprising a core-pulling slider and a straightly movable and rotatable driving gear, a core-pulling rack is arranged on the core-pulling slider and engaged with the driving gear.

[0011] The mold accelerating core-pulling device further comprises a driving mechanism, the driving mechanism comprises a fixed rack engaged with the driving gear, and the fixed rack is parallel to the core-pulling rack.

[0012] The driving mechanism further comprises a driving actuator connected with the driving gear and used for driving the driving gear to move straightly.

[0013] The driving actuator is an oil cylinder, an air cylinder or an electric cylinder.

[0014] The driving actuator and the fixed rack are arranged on a fixed seat, and the fixed seat is fixedly connected with the mold main body.

[0015] The fixed seat is Z-shaped.

[0016] The driving executor comprises a piston rod, and a groove is arranged on the piston rod to accommodate the driving gear.

[0017] The present application also provides a core pulling method of the mold accelerating core pulling device.

[0018] In the backward stroke of the core pulling slider, the driving gear is linearly moved while being reversely rotated, and the driving gear drives the core pulling slider to be linearly moved.

[0019] The mold accelerating core pulling device can greatly reduce the stroke of the driving gear and the corresponding driving mechanism, reduce the space occupied by the device as a whole, and further reduce the size of the mold as a whole, thereby reducing the product manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the mold accelerating core pulling device of the present application;

[0021] Figure 2 is a connection schematic view of the driving executor and the driving gear;

[0022] Figure 3 is a schematic view of the cooperation relationship among the core pulling rack, the driving gear and the fixed rack;

[0023] Figure 4 is a structural schematic view of the core pulling slider;

[0024] The marks in the above figures are as follows: 1, product; 2, core pulling slider; 21, product forming structure area; 22, glue sealing sliding positioning area; 23, core pulling rack; 3, driving executor; 31, piston rod; 32, groove; 4, fixed seat; 41, first screw; 42, second screw; 43, third screw; 5, driving gear; 51, shaft pin; 6, fixed rack; 7, mold main body. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application are further described below with reference to the drawings, and the purpose is to help the skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present application, and to facilitate its implementation.

[0026] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", and the like are used herein for the purpose of explanation only, not of restriction.

[0027] It is to be noted that in the following embodiments, the terms "first", "second", and "third" do not represent absolute division of structure and / or function, nor represent execution sequence, but merely for the convenience of description.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0029] As shown in Figures 1 to 4 The mold accelerating core-pulling device provided by the application comprises a core-pulling slider 2 and a linearly movable and rotatable driving gear 5, and the core-pulling slider 2 is provided with a core-pulling rack 23 engaged with the driving gear 5.

[0030] As shown in Figures 1 to 4 The mold accelerating core-pulling device provided by the application further comprises a driving mechanism, and the driving mechanism comprises a fixed rack 6 engaged with the driving gear 5, and the fixed rack 6 is parallel to the core-pulling rack 23.

[0031] The driving mechanism further comprises a driving actuator 3 connected with the driving gear 5 and used for driving the driving gear 5 to move linearly.

[0032] The driving actuator 3 is an oil cylinder, a gas cylinder or an electric cylinder.

[0033] The driving actuator 3 and the fixed rack 6 are arranged on a fixed seat 4, and the fixed seat 4 is fixedly connected with a mold main body 7.

[0034] The fixed seat 4 is Z-shaped.

[0035] The driving actuator 3 comprises a piston rod 31, and the piston rod 31 is provided with a groove for accommodating the driving gear 5.

[0036] The application further provides a core-pulling method of the mold accelerating core-pulling device, and during the forward stroke of the core-pulling slider 2, the driving gear 5 is driven to move linearly and rotate forwardly, the driving gear 5 drives the core-pulling slider 2 to move linearly, and the accelerating movement of the core-pulling slider 2 is realized.

[0037] When the actuator 3 receives an external forward drive signal, it drives the drive gear 5 at the front end of the piston rod 31 to move forward. Since the fixed rack 6 at the lower part of the drive gear 5 is fixed, the forward movement of the drive gear 5 drives its own forward rotation. The forward rotation of the drive gear 5 drives the core-pulling slider 2 that it is paired with to move forward. At this time, the forward stroke of the core-pulling slider 2 is the sum of the forward stroke of the piston rod 31 and the rotation circumference of the drive gear 5, thereby achieving accelerated forward movement.

[0038] During the backward stroke of the core-pulling slider 2, the drive actuator 3, upon receiving an external backward drive signal, drives the drive gear 5 at the front end of the piston rod 31 to move backward. Since the fixed rack 6 at the lower part of the drive gear 5 is stationary, the backward movement of the drive gear 5 causes it to rotate in the opposite direction. The reverse rotation of the drive gear 5 drives the core-pulling slider 2 to move backward. At this time, the backward stroke of the core-pulling slider 2 is the sum of the backward stroke of the piston rod 31 and the rotation circumference of the drive gear 5, thereby achieving accelerated backward movement.

[0039] Example 1

[0040] In the existing technology, some product mold core pulling uses hydraulic cylinders or air cylinders for driving. Among them, the driving stroke of the hydraulic cylinders or air cylinders used in the core pulling structure with a long undercut is increased, the number of its own external shapes increases, and the space occupied by the mold as a result increases.

[0041] like Figures 1 to 4 As shown, this embodiment provides a mold core-pulling acceleration device, including a core-pulling slider 2 and a linearly movable and rotatable drive gear 5. A core-pulling rack 23 meshes with the drive gear 5 on the core-pulling slider 2. The core-pulling slider 2 is a moving component, capable of reciprocating along a specific direction under the drive of a drive mechanism. The direction of movement of the drive gear 5 is parallel to the direction of movement of the core-pulling slider 2.

[0042] During the forward stroke of the core-pulling slider 2, the drive gear 5 moves linearly and rotates in the forward direction. The drive gear 5 drives the core-pulling slider 2 to move linearly, thereby accelerating the movement of the core-pulling slider 2 and enabling the core-pulling slider 2 to control the product in the mold to perform corresponding actions.

[0043] During the backward stroke of the core-pulling slider 2, the drive gear 5 moves linearly while rotating in the opposite direction. The drive gear 5 drives the core-pulling slider 2 to move linearly, causing the product in the mold to detach from the core-pulling slider 2.

[0044] Specifically, such as Figures 1 to 4As shown, the mold core-pulling device of the embodiment further comprises a driving mechanism, which comprises a fixed rack 6 engaged with the driving gear 5, and the fixed rack 6 is parallel to the core-pulling rack 23. The driving gear 5 is located between the fixed rack 6 and the core-pulling rack 23, and the driving gear 5 is engaged with the fixed rack 6 and the core-pulling rack 23 at the same time, and the fixed rack 6 is fixedly arranged.

[0045] As shown in Figure 1 and Figure 2 , the driving mechanism further comprises a driving actuator 3 connected with the driving gear 5 and used to drive the driving gear 5 to move linearly, the driving actuator 3 is a telescopic member, and the driving actuator 3 is an oil cylinder. The driving actuator 3 and the fixed rack 6 are fixedly arranged on a fixed seat 4, and the fixed seat 4 is fixedly connected with the mold body 7.

[0046] In the embodiment, the oil cylinder is used for driving, and after the driving actuator 3 is elongated, the driving actuator 3 drives the driving gear 5 to move forward, cooperates with the fixed rack 6 arranged at the lower part of the gear, and the driving gear 5 rotates forward around its own axis at the same time, and the forward rotation of the driving gear 5 drives the core-pulling slider 2 cooperating with it to move forward at the same time, that is, the core-pulling slider 2 moves towards the product in the mold, and at this time, the forward stroke of the core-pulling slider 2 is the sum of the forward stroke of the piston of the driving actuator 3 and the circumference of the forward rotation of the driving gear 5, so as to realize the accelerated movement of the core-pulling slider 2. This structure can greatly reduce the stroke of the driving gear 5 and the corresponding driving mechanism, reduce the space occupied by the whole device, and further reduce the size of the mold as a whole, so as to reduce the product manufacturing cost. Thus, the problems of large space size occupied by the mold development of long reverse buckle product structure and high product manufacturing cost can be solved.

[0047] As shown in Figure 1 , the fixed seat 4 is used to connect and fix the mold and the oil cylinder, the fixed seat 4 is Z-shaped, and the fixed seat 4 comprises a first mounting part, a second mounting part and a third mounting part. The first mounting part is vertically arranged, and the driving actuator 3 is fixedly mounted on the first mounting part. The second mounting part is horizontally arranged, the fixed rack 6 is fixedly mounted on the second mounting part, one end of the second mounting part is fixedly connected with the upper end of the first mounting part, and the other end of the second mounting part is fixedly connected with the lower end of the third mounting part. The fixed seat 4 with this structure realizes the integrated installation of the driving actuator 3 and the fixed rack 6, facilitates the installation of the device on the mold, and helps to reduce the overall volume of the device and the space occupied during layout.

[0048] As shown in Figure 1 and Figure 2As shown, the driving actuator 3 includes a cylinder, a piston and a piston rod 31, the cylinder is fixedly installed on the first installation part of the fixed seat 4 through a plurality of first screws 41, the fixed rack 6 is fixedly installed on the second installation part of the fixed seat 4 through a plurality of second screws 42, and the third installation part of the fixed seat 4 is fixedly installed on the mold body through a plurality of third screws 43. The components are connected by screws for easy disassembly and assembly.

[0049] As shown in Figure 2 , one end of the piston rod 31 is fixedly connected with the piston in the cylinder, and the other end of the piston rod 31 is provided with a groove for accommodating the driving gear 5. The piston rod 31 and the driving gear 5 are fixed by a shaft pin 51, so that the driving gear 5 can rotate on the piston rod 31 after being fixed. The shaft pin 51 passes through the center holes of the piston and the driving gear 5 to be fixed centrally.

[0050] As shown in Figure 4 , the core-pulling slider 2 includes a product forming structure area 21, a glue sealing sliding positioning area 22 and a core-pulling rack 23. The glue sealing sliding positioning area 22 is located between the product forming structure area 21 and the core-pulling rack 23, and the two ends of the glue sealing sliding positioning area 22 are fixedly connected with the product forming structure area 21 and the core-pulling rack 23 respectively.

[0051] Embodiment two

[0052] The embodiment also provides a core-pulling method of the mold core-pulling device. In the forward stroke of the core-pulling slider 2, the driving gear 5 is driven to move linearly and rotate forward at the same time, the driving gear 5 drives the core-pulling slider 2 to move linearly, and the acceleration movement of the core-pulling slider 2 is realized.

[0053] Specifically, as shown in Figures 1 to 4 , the driving actuator 3 drives the driving gear 5 at the front end of the piston rod 31 to move forward under the reception of the external forward driving signal, the driving gear 5 is driven to rotate forward because the fixed rack 6 at the lower part of the driving gear 5 is fixed and immovable, the forward rotation of the driving gear 5 drives the core-pulling slider 2 cooperating with the driving gear 5 to move forward, at this time, the forward stroke of the core-pulling slider 2 is the sum of the forward stroke of the piston rod 31 and the circumference of the driving gear 5, so that the acceleration forward movement is realized.

[0054] In the backward stroke of the core-pulling slider 2, the driving actuator 3 drives the driving gear 5 at the front end of the piston rod 31 to move backward under the reception of the external backward driving signal, the driving gear 5 is driven to rotate reversely because the fixed rack 6 at the lower part of the driving gear 5 is fixed and immovable, the reverse rotation of the driving gear 5 drives the core-pulling slider 2 cooperating with the driving gear 5 to move backward, at this time, the backward stroke of the core-pulling slider 2 is the sum of the backward stroke of the piston rod 31 and the circumference of the driving gear 5, so that the acceleration backward movement is realized.

[0055] The application is described above in conjunction with the drawings, and it is obvious that the specific implementation of the application is not limited by the above manner, as long as various non-essential improvements are made by using the method concept and technical solution of the application, or the concept and technical solution of the application is directly applied to other occasions without improvement, which are all within the protection scope of the application.

Claims

1. A mold core-pulling acceleration device, comprising a core-pulling slider, characterized in that: It also includes a linearly movable and rotatable drive gear, and the core-pulling slider is provided with a core-pulling rack that meshes with the drive gear; The aforementioned mold core-pulling acceleration device further includes a drive mechanism, which includes a fixed rack that meshes with the drive gear, and the fixed rack is parallel to the core-pulling rack.

2. The mold core-pulling acceleration device according to claim 1, characterized in that: The drive mechanism also includes a drive actuator connected to the drive gear and used to drive the drive gear to move linearly.

3. The mold core-pulling acceleration device according to claim 2, characterized in that: The drive actuator is a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

4. The mold core-pulling acceleration device according to claim 2, characterized in that: The drive actuator and the fixed rack are mounted on a fixed base, which is fixedly connected to the mold body.

5. The mold core-pulling acceleration device according to claim 4, characterized in that: The mounting base is Z-shaped.

6. The mold core-pulling acceleration device according to any one of claims 2 to 5, characterized in that: The drive actuator includes a piston rod, on which a groove is provided to accommodate the drive gear.

7. A core-pulling method for a mold accelerated core-pulling device according to any one of claims 1 to 5, characterized in that: During the forward stroke of the core-pulling slider, the drive gear rotates in the forward direction while moving linearly. The drive gear drives the core-pulling slider to move linearly, thereby accelerating the movement of the core-pulling slider.

8. The core-pulling method according to claim 7, characterized in that: During the backward stroke of the core-pulling slider, the drive gear moves linearly while simultaneously rotating in the opposite direction, thus driving the core-pulling slider to move linearly.

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