Die

Abstract

The utility model relates to a mould which comprises a fixed mould and a movable mould arranged below the fixed mould, a mould cavity of the fixed mould and a mould cavity of the movable mould are combined to form a cavity, the mould further comprises a sliding block piece used for being connected with a forming core, the sliding block piece is provided with a clamping unit clamped with the forming core, and the forming core correspondingly moves forwards and backwards under the driving of a first driving mechanism. A jacking mechanism comprising a first guide piece, a jacking piece and an actuating assembly is installed on the movable mold, and the first guide piece is fixed to the movable mold and provided with a guide hole allowing the jacking piece to move along a preset path. And the actuating assembly actuates the jacking piece to move upwards along the guide hole and jacks the sliding block piece on the fixed mold so as to prevent the sliding block piece from retreating. After the first driving mechanism drives the sliding block piece and the forming core to move to the preset position, the jacking mechanism can provide upward force for the sliding block piece so that the sliding block piece can be fixed to the fixed mold, the situation that the sliding block piece retreats in the mold closing state is avoided, and then the machining quality of products is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to die casting die technical field, concretely relates to a structure for fixing slider part in mould. BACKGROUND

[0002] Compared with simple forming product, the forming product of complex structure needs to use slider core to meet the forming demand in the die casting process, and the corresponding die casting die also needs to be equipped with driving mechanism and slider seat to cooperate forming.

[0003] A die casting die slider is disclosed in a Chinese utility model patent with the patent number ZL201320052530.1 (publication number CN203140729U), which comprises a slider seat and a slider core, the front part of the slider seat is provided with a cylinder clamping groove for connecting the cylinder and the slider seat, the two sides of the slider seat are provided with steps for sliding in the sliding groove of the die, and the rear part of the slider seat is provided with a positioning reference block, which cooperates with the clamping groove on the slider core, and under the driving of the cylinder, the slider seat can drive the slider core to move to the preset position of the cavity. However, the slider seat is prone to back-off after long-term use of the die casting die, which is mainly caused by the accumulation of impurities in the slider seat or the wear of the slider seat. The back-off of the slider seat will cause the slider core connected thereto to fail to reach the specified position of the cavity, thereby causing the processing size of the product to deviate and increasing the scrap rate.

[0004] Therefore, the internal structure of the die needs to be further improved. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of the prior art, and provides a die capable of avoiding the increase of the scrap rate caused by the back-off of the slider part.

[0006] The utility model adopts the technical scheme that the die comprises:

[0007] A fixed die;

[0008] A movable die arranged below the fixed die, a cavity of the fixed die and the movable die being combined to form a cavity for forming a forming product; and

[0009] A slider part for connecting a forming core and provided with a clamping unit clamped with the forming core, the slider part driving the forming core to make corresponding advancing and retreating movements under the driving of a first driving mechanism thereof in the state of opening or closing the die;

[0010] The utility model discloses a die set for injection molding machine, which is characterized in that a clamping mechanism is mounted on the movable die, the clamping mechanism comprises a first guide, a clamping member and an actuating assembly for actuating the clamping member, the first guide is fixed on the movable die, and a guide hole is arranged on the first guide for the clamping member to move along a preset path, so that in the clamped state, the actuating assembly actuates the clamping member to move upward along the guide hole and clamps the slider on the fixed die to prevent the slider from falling back.

[0011] In order to guide the movement path of the slider, preferably, the first guide comprises a bottom wall and an extension peripheral wall extending upward from the periphery of the bottom wall, the guide hole is arranged on the bottom wall, and a first through part for the second guide to pass through is arranged on the extension peripheral wall for the corresponding advancing and retreating movement of the forming core. Correspondingly, a guide groove adapted to the second guide is arranged on the bottom of the slider. The guide hole is arranged on the bottom of the first guide, and the clamping member can pass through the guide hole, so that the movement path of the clamping member is consistent with the preset path. In addition, the first through part is arranged on the first guide, and the guide groove is arranged on the bottom of the slider. The structure of the first through part and the guide groove is adapted to the second guide, and the second guide is fixed on the movable die, so that the slider can slide along the wall surface of the second guide when the slider moves forward and backward, thereby ensuring the accuracy of the movement path.

[0012] In order to provide clamping force to the slider, preferably, the clamping member comprises two clamping legs arranged symmetrically and used for clamping the slider, a second through part for the second guide to pass through is formed between the two clamping legs, the second through part is in communication with the first through part, and notches adapted to the two clamping legs are arranged on the bottom of the slider. The clamping member is designed in an "H" shape. The purpose of this structure is as follows: first, two clamping legs are formed on the clamping member, and the clamping force applied to the bottom of the slider is more uniform compared with the clamping member with only one clamping leg; second, the second through part is formed between the two clamping legs, and the first through part and the second through part are arranged adjacently to form a space for the second guide to pass through, thereby facilitating the installation of the second guide and playing a guiding role.

[0013] In order to facilitate the transmission of power, preferably, the clamping member further comprises a mounting part connected to the power output end of the actuating assembly, and the mounting part is located between the two clamping legs. The mounting part is arranged below the second through part, and the power output end of the actuating assembly is inserted into the mounting part of the clamping member. Under the driving action, the actuating assembly can drive the clamping member to move synchronously.

[0014] To extend the lifespan of the slider component, preferably, the extended peripheral wall is further provided with a wear-resistant block to reduce wear on the bottom of the slider component. The wear-resistant block has mounting holes for fasteners to connect and install onto the slider component. Since the slider component is prone to wear after prolonged use and therefore requires periodic replacement, this application uses a fixing component to fix the wear-resistant block at the bottom of the slider component, which can reduce friction during use and thus extend its service life.

[0015] To facilitate the installation of the second guide component, preferably, the wear-resistant block is inverted and concave in shape. The bottom wall of the wear-resistant block is concave upwards to form a third through-hole for the second guide component to pass through. The third through-hole, the second through-hole, and the first through-hole are interconnected. The top of the second guide component contacts the bottom wall of the slider component. Since the wear-resistant block is located at the bottom of the slider component, the advantage of designing the wear-resistant block as an inverted concave shape is that the concave third through-hole and the guide groove of the slider component are adjacent to each other, forming a groove for the top of the second guide component to engage. The bottom of the second guide component is then positioned on the first and second through-holes. The cooperation of the first, second, and third through-holes and the guide groove creates space for the second guide component to pass through, thus facilitating its better guiding function.

[0016] To provide driving force to the clamping member, preferably, the actuation assembly includes a hydraulic cylinder with an upwardly extending piston rod at its top, forming the power output end. The hydraulic cylinder serves as the driving mechanism, allowing the piston rod to extend and retract vertically under its drive, thereby causing the connected clamping member to move synchronously.

[0017] To facilitate control of the clamping component, preferably, the hydraulic cylinder is equipped with an oil inlet pipe connecting to the inside of the cylinder. When oil is flowing through the inlet pipe, the pressure inside the cylinder increases, thereby driving the actuation assembly to move the slider component upwards synchronously, thus fixing it onto the fixed mold. Specifically, when oil is flowing through the inlet pipe, the increased pressure inside the cylinder drives the piston rod upwards, which in turn moves the connected clamping component upwards synchronously, thus clamping the slider component onto the fixed mold.

[0018] Compared with the prior art, the advantages of this utility model are as follows: a clamping mechanism is provided below the slider. When the first driving mechanism drives the slider and the forming core to move to the preset position, the clamping mechanism can move upward and apply an upward clamping force to the slider, thereby fixing the slider on the fixed mold and preventing the slider from retracting in the mold closing state, thus ensuring the processing quality of the product. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0020] Figure 2 This is a longitudinal cross-sectional view of the embodiment of the present invention in the clamped state (the fixed mold and the moving mold are omitted);

[0021] Figure 3 This is a schematic diagram of the longitudinal section of the present invention in the non-tightened state (the fixed mold and the moving mold are omitted).

[0022] Figure 4 This is a three-dimensional structural diagram of the slider, clamping mechanism, and wear-resistant block in an embodiment of this utility model;

[0023] Figure 5 for Figure 4 A schematic diagram of the longitudinal section;

[0024] Figure 6 for Figure 4 Another longitudinal cross-sectional diagram;

[0025] Figure 7 for Figure 4 A schematic diagram of the decomposition process;

[0026] Figure 8 This is a three-dimensional structural diagram of the slider and wear-resistant block in an embodiment of this utility model.

[0027] In the diagram: 1. Fixed mold; 2. Moving mold; 3. Cavity; 4. Slider; 41. Engaging unit; 42. Guide groove; 43. Notch; 5. First drive mechanism; 6. Molding core; 7. Tightening mechanism; 71. First guide; 711. Guide hole; 712. First through part; 72. Tightening part; 721. Tightening support foot; 722. Second through part; 723. Mounting part; 73. Actuation assembly; 731. Hydraulic cylinder; 732. Piston rod; 733. Oil inlet pipe; 734. Oil return pipe; 8. Second guide; 9. Wear-resistant block; 91. Mounting hole; 92. Third through part. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 8The diagram shows the preferred embodiment of this utility model. The mold includes a fixed mold 1 and a movable mold 2 disposed below the fixed mold 1. The cavities of the fixed mold 1 and the movable mold 2 are combined to form a cavity 3 for molding an article. It also includes a slider 4 for connecting a molding core 6 and having a locking unit 41 that engages with the molding core 6. In the mold opening or closing state, the slider 4 drives the molding core 6 to perform corresponding forward and backward movements by means of its own first driving mechanism 5. A clamping mechanism 7 is installed on the movable mold 2. The clamping mechanism 7 includes a first guide 71, a clamping member 72, and an actuation component 73 for actuating the clamping member 72. The first guide 71 is fixed on the movable mold 2 and is provided with a guide hole 711 for the clamping member 72 to move along a preset path. Thus, in the mold closing state, the actuation component 73 actuates the clamping member 72 to move upward along the guide hole 711 and clamps the slider 4 onto the fixed mold 1 to prevent it from retracting.

[0030] In this embodiment, the movement of the slider 4 is divided into two steps. Taking the mold-closed state as an example, firstly, the first driving mechanism 5 drives the slider 4 to move the molding core 6 horizontally to the right, that is, towards the cavity 3, until the molding core 6 moves to the preset position of the cavity 3. Then, the clamping mechanism 7 clamps the slider 4 vertically upward, thereby fixing the slider 4 on the fixed mold 1. The above two processes need to ensure that the slider 4 always stays within the preset path. For this reason, this embodiment is provided with a first guide 71 and a second guide 8 (see reference) to guide the movement path. Figures 2 to 4 The second guide member 8 is fixed on the moving mold 2. The guide groove 42 at the bottom of the slider 4 and the first through part 712 on the extended peripheral wall of the first guide member 71 are both adapted to the second guide member 8, so that the slider 4 moves along a preset path in the horizontal direction under the guidance of the second guide member 8. The bottom wall of the first guide member 71 is provided with a guide hole 711. The clamping member 72 moves upward in the vertical direction under the guidance of the guide hole 711, thereby fixing the slider 4 on the fixed mold 1. During this process, the guide hole 711 ensures that the movement path of the clamping member 72 is consistent with the preset path.

[0031] Furthermore, during the process of the clamping mechanism 7 clamping the slider 4 upward, it is necessary for the force-applying part and the force-receiving part to cooperate with each other, as shown in the reference. Figure 6 and Figure 7In this embodiment, the clamping member 72 is designed as an "H"-shaped structure. Specifically, the clamping member 72 includes two symmetrically arranged clamping legs 721 for clamping the slider 4. The bottom of the slider 4 is provided with recesses 43 that are adapted to the two clamping legs 721 respectively. The actuation component 73 in the clamping mechanism 7 first transmits power to the clamping member 72. The clamping legs 721 on the clamping member 72 apply force to the slider 4. The recesses 43 at the bottom of the slider 4 are the force-bearing parts. At this time, the slider... The slider 4 is pressed firmly against the fixed mold 1 without retraction. Compared to the clamping member 72 with only a single clamping foot 721, the clamping force applied to the bottom of the slider 4 by the clamping member 72 in this embodiment is more uniform. Simultaneously, a second through-hole 722 is formed between the two clamping feet 721 for the second guide member 8 to pass through. The second through-hole 722 communicates with the first through-hole 712, and the first through-hole 712 and the second through-hole 722 are arranged adjacent to each other to form a space for the second guide member 8 to pass through. The slider 4 is prone to wear after long-term use and therefore requires periodic replacement. To improve the service life of the slider 4, this embodiment provides a wear-resistant block 9 on the extended peripheral wall of the first guide member 71 to reduce wear on the bottom of the slider 4. The wear-resistant block 9 has mounting holes 91 for fasteners to connect and install to the slider 4. (Reference) Figure 7 and Figure 8 In this embodiment, the wear-resistant block 9 is designed as an inverted "concave" shape. The bottom wall of the wear-resistant block 9 is concave upward to form a third through part 92 for the second guide member 8 to pass through. The advantage of the inverted "concave" structure is that the top of the second guide member 8 contacts the bottom wall of the slider member 4. Since the wear-resistant block 9 is set at the bottom of the slider member 4, the concave third through part 92 of the wear-resistant block 9 and the guide groove 42 of the slider member 4 are arranged adjacent to each other, which can form a slot structure for the top of the second guide member 8 to be engaged. At this time, the bottom of the second guide member 8 is set on the first through part 712 and the second through part 722. With the cooperation of the first through part 712, the second through part 722, the third through part 92 and the guide groove 42, a space is formed for the second guide member 8 to pass through, so that it can better play its guiding role.

[0032] refer to Figures 5 to 7In this embodiment, the driving mechanism in the actuation assembly 73 is a hydraulic cylinder 731. A piston rod 732 extending upwards is provided at the top of the hydraulic cylinder 731, constituting the power output end. To facilitate power transmission, a mounting portion 723 is provided between the two clamping legs 721 of the clamping member 72. The piston rod 732 is located within the mounting portion 723, thereby achieving synchronous movement of the actuation assembly 73 and the clamping member 72. The hydraulic cylinder 731 is provided with an oil inlet pipe 733 and an oil return pipe 734 connecting to the inside of the hydraulic cylinder 731. Taking the oil inlet process as an example, when the oil inlet pipe 733 of the hydraulic cylinder 731 is in the oil-inlet state, the pressure inside the hydraulic cylinder 731 increases, driving the piston rod 732 to move upwards, thereby causing the clamping member 72 connected to it to move upwards synchronously, thus clamping the slider 4 onto the fixed mold 1.

[0033] The specific working process of the mold in this embodiment is as follows:

[0034] In the mold-closed state: Driven by the first drive mechanism 5 and guided by the second guide member 8, the slider 4 drives the molding core 6 to move along the direction close to the cavity 3 until the molding core 6 moves to the preset position of the cavity 3. At this time, the oil inlet pipe 733 of the oil cylinder 731 in the actuation assembly 73 starts to inject oil, the internal pressure of the oil cylinder 731 increases, forcing the piston rod 732 to move upward, and driving the clamping member 72 to move upward along the guide hole 711. The two clamping feet 721 of the clamping member 72 are clamped into the recess 43 at the bottom of the slider, thereby fixing the slider 4 on the fixed mold 1 and preventing the slider 4 from retracting.

[0035] In the mold-opening state: the oil return pipe 734 of the oil cylinder 731 in the actuation component 73 starts to return oil, the pressure inside the oil cylinder 731 decreases, the piston rod 732 moves downward under pressure, and drives the clamping part 72 to move downward synchronously. At this time, the bottom of the slider 4 is not under force. Under the drive of the first drive mechanism 5, the slider 4 drives the molding core 6 to move horizontally to the left, thereby pulling the molding core 6 out of the cavity 3.

Claims

1. A mold comprising: a fixed mold (1); a movable mold (2) arranged below the fixed mold (1), a mold cavity of the fixed mold (1) and the movable mold (2) combining to form a cavity (3) for molding a molded product; and a slider (4) for connecting a molding core (6) and having a clamping unit (41) clamped with the molding core (6); the molding core (6) is driven to move forward or backward by a first driving mechanism (5) of the slider (4) in a mold opening or closing state; characterized in that a clamping mechanism (7) is arranged on the movable mold (2), the clamping mechanism (7) comprising a first guide (71), a clamping piece (72) and an actuating assembly (73) for actuating the clamping piece (72), the first guide (71) is fixed on the movable mold (2), the first guide (71) is provided with a guide hole (711) for the clamping piece (72) to move along a predetermined path, so as to realize that in the mold closing state, the actuating assembly (73) actuates the clamping piece (72) to move upward along the guide hole (711) and clamps the slider (4) on the fixed mold (1) to prevent backward movement.

2. The mold of claim 1, wherein: The first guide (71) comprises a bottom wall and an extension peripheral wall extending upward from the periphery of the bottom wall, the guide hole (711) is arranged on the bottom wall, and the extension peripheral wall is provided with a first through portion (712) for the second guide (8) to move forward or backward, and correspondingly, the bottom of the slider (4) is provided with a guide groove (42) matched with the second guide (8).

3. The mold of claim 2, wherein: The clamping piece (72) comprises two symmetrical clamping legs (721) for clamping the slider (4), and a second through portion (722) is formed between the two clamping legs (721) for the second guide (8) to pass through, the second through portion (722) is in communication with the first through portion (712), and the bottom of the slider (4) is provided with notches (43) matched with the two clamping legs (721), respectively.

4. The mold of claim 3, wherein: The clamping piece (72) further comprises a mounting portion (723) connected with a power output end of the actuating assembly (73), and the mounting portion (723) is located between the two clamping legs (721).

5. The mold of claim 4, wherein: The extension peripheral wall is further provided with a wear-resistant block (9) for reducing wear of the bottom of the slider (4), and the wear-resistant block (9) is provided with mounting holes (91) for fasteners to be connected and mounted to the slider (4).

6. The mold of claim 5, wherein: The wear-resistant block (9) is in the shape of an inverted "concave", and a bottom wall of the wear-resistant block (9) is concave upward to form a third through portion (92) for the second guide (8) to pass through, and the third through portion (92), the second through portion (722) and the first through portion (712) are in communication.

7. The mold according to any one of claims 4 to 6, characterized in that: The actuating assembly (73) comprises a hydraulic cylinder (731), and a piston rod (732) extending upward is arranged at the top of the hydraulic cylinder (731), and the piston rod (732) constitutes the power output end.

8. The mold of claim 7, wherein: The oil cylinder (731) is provided with an oil inlet pipe (733) communicated to the inside of the oil cylinder (731), and the pressure in the oil cylinder (731) is increased in the oil inlet state, thereby driving the actuating assembly (73) to drive the slider (4) to move upward synchronously, and fixing the slider (4) on the fixed mold (1).

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