Fastener for precise plastic mould

Abstract

The utility model relates to the field of molds, and discloses a precise plastic mold fastener which comprises a mold component and a connecting component, the mold component comprises a bottom plate, a lower mold is placed at the top end of the bottom plate, the top end of the bottom plate is connected with a support symmetrical about the lower mold, a top plate is installed at the top end of the support, a lifting mechanism is installed at the bottom end of the top plate, and an upper mold is arranged below the lifting mechanism; the bottom end of the lifting mechanism is fixedly connected with a connecting plate located at the top end of the upper die. The connecting component comprises a sliding groove communicating with the connecting plate from the middle of the bottom end of the connecting plate front and back, and the bottom end of the connecting plate is slidably connected with two clamping plates located in front and back of the upper die in a front-back symmetrical clamping mode through the sliding groove. Under the action of the driving mechanism, the two clamping plates can be driven to slide in the opposite directions along the sliding grooves at the same time, that is, the two clamping plates can get close to each other to clamp and fix the upper die or get away from each other to loosen the lower die, and therefore the upper die can be tightly connected and can be conveniently taken down. Compared with an existing direct fixing mode, the arrangement is undoubtedly more practical.

Description

Technical Field

[0001] The utility model belongs to the field of molds, in particular to a precision plastic mold fastener. Background Art

[0002] Plastic molds are tools used to shape plastic products in industrial production. According to different production processes, they can be divided into extrusion molds, injection molds, blow molding molds, etc. The mold itself is usually made of steel, and its structural design needs to meet the requirements of the shape, size, precision, etc. of the product.

[0003] The plastic mold is divided into an upper mold and a lower mold. When in use, the hot melt plastic is poured into the groove of the lower mold, and then the upper mold is closed. Therefore, due to the weight limit of the mold itself, a lifting mechanism is required to automatically adjust the lifting of the upper mold. The connecting device between the lifting mechanism and the upper mold is a fastener. Although this fastener plays a role in connecting the upper mold, it also limits the disassembly of the upper mold. Utility Model Content

[0004] The technical problem to be solved is: How to ensure that the upper mold and the lifting cabinet are tightly connected while making it easy to remove the upper mold.

[0005] Technical solution: The utility model provides a precision plastic mold fastener, including a mold component and a connecting component: the mold component includes a bottom plate, a lower mold is placed on the top of the bottom plate, and its top is connected to a bracket symmetrical with respect to the lower mold, a top plate is installed on the top of the bracket, a lifting mechanism is installed on the bottom of the top plate, an upper mold is arranged below the lifting mechanism, and a connecting plate located at the top of the upper mold is fixedly connected at the bottom end of the lifting mechanism; the connecting component includes a slide groove starting from the middle of the bottom end of the connecting plate and communicating with the front and rear of the connecting plate, and the bottom end of the connecting plate is symmetrically engaged and slidably connected to two clamping plates located in front and behind the upper mold through the slide groove; in addition, a driving mechanism for driving the two clamping plates to slide in opposite directions simultaneously along the slide groove is also provided on the connecting plate.

[0006] Furthermore, the driving mechanism includes a bearing seat installed in the middle of the slide slot, and the bearing seat is connected with a bidirectional screw rod located in the slide slot and with its center coincident with the slide slot; in addition, the top end of each clamping plate is connected to a slider that is slidably connected in the slide slot and is threaded with the bidirectional screw rod; in addition, a rotating mechanism for driving the bidirectional screw rod to rotate is also provided on the connecting plate.

[0007] Furthermore, the rotating mechanism includes hand wheels installed at both ends of the bidirectional screw and located outside the connecting plate.

[0008] Furthermore, the bearing seat is mainly composed of a shell and a bearing, the inner wall of the slide groove is fixedly connected to the outer wall of the shell, the inner wall of the shell is fixed to the outer ring of the bearing, and the inner ring of the bearing and the bidirectional screw rod are penetrated after interference fit.

[0009] Furthermore, two guide grooves symmetrical to the slide groove are formed at the bottom end of the connecting plate; in addition, two guide blocks respectively slidably connected to the corresponding guide grooves are connected to the bottom end of each clamping plate.

[0010] Furthermore, the lifting mechanism is a hydraulic cylinder installed at the bottom end of the top plate, and the bottom end of the hydraulic cylinder is fixedly connected to the top end of the connecting plate.

[0011] Technical effect: In the utility model, the two clamping plates can be driven to slide in opposite directions along the slide groove at the same time under the action of the driving mechanism, that is, the two clamping plates can be moved closer to each other to clamp and fix the upper mold or move away from each other to loosen the lower mold, so that the upper mold can be tightly connected and easily removed. Compared with the existing direct fixing method, this setting is undoubtedly more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the driving mechanism structure of the utility model;

[0016] In the figure: 1. bottom plate; 2. lower die; 3. bracket; 4. top plate; 5. lifting mechanism; 6. upper die; 7. connecting plate; 8. slide groove; 9. clamping plate; 10. driving mechanism; 1001. bearing seat; 1002. bidirectional screw rod; 1003. slider; 1004. rotating mechanism; 11. guide groove; 12. guide block. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0018] The precision plastic mold fastener provided in this specific embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a mold component and a connecting component, wherein:

[0019] The mold component includes a bottom plate 1, a lower mold 2 is placed on the top of the bottom plate 1, and a bracket 3 symmetrical to the lower mold 2 is connected to the top of the bottom plate 1, a top plate 4 is installed on the top of the bracket 3, and a lifting mechanism 5 is installed on the bottom of the top plate 4. Usually, the lifting mechanism 5 is a hydraulic cylinder installed on the bottom of the top plate 4. In addition, an upper mold 6 is arranged below the lifting mechanism 5, and a connecting plate 7 located at the top of the upper mold 6 is fixedly connected to the bottom of the lifting mechanism 5.

[0020] The connecting member includes a slide groove 8 starting from the middle of the bottom end of the connecting plate 7 and communicating with the front and rear of the connecting plate 7. The bottom end of the connecting plate 7 is symmetrically engaged and slidably connected to two clamping plates 9 located in front and behind the upper mold 6 through the slide groove 8. In addition, the connecting plate 7 is also provided with a driving mechanism 10 for driving the two clamping plates 9 to slide in opposite directions along the slide groove 8 at the same time. Figure 3 As shown, the driving mechanism 10 includes a bearing seat 1001 installed in the middle of the slide slot 8, and a bidirectional screw 1002 located in the slide slot 8 and coinciding with the center thereof is connected to the bearing seat 1001 through and through. Specifically, the bearing seat 1001 is mainly composed of a shell and a bearing, the inner wall of the slide slot 8 is fixedly connected to the outer wall of the shell, the inner wall of the shell is fixed to the outer ring of the bearing, and the inner ring of the bearing is penetrated by the bidirectional screw 1002 after interference fit; in addition, the top of each clamping plate 9 is connected to a slider 1003 which is slidably connected in the slide slot 8 and is threadedly penetrated by the bidirectional screw 1002; in addition, a rotating mechanism 1004 for driving the bidirectional screw 1002 to rotate is also provided on the connecting plate 7. In order to save costs, the rotating mechanism 1004 can be a hand wheel installed at both ends of the bidirectional screw 1002 and located outside the connecting plate 7. In this way, when the bidirectional screw rod 1002 is rotated by the hand wheel, the clamping plate 9 is restricted from rotating by the sliding groove 8 and the slider 1003 that are slidably connected, so it can only move horizontally by thread. In this way, the two clamping plates 9 can be close to each other to clamp and fix the upper mold 6 or move away from each other to loosen the lower mold 6. In this way, the upper mold 6 can be tightly connected and convenient to remove.

[0021] In addition, if Figure 3 As shown, two guide grooves 11 symmetrical to the slide groove 8 are provided at the bottom of the connecting plate 7; in addition, two guide blocks 12 are connected to the bottom of each clamping plate 9, which are respectively slidably connected to the corresponding guide grooves 11. The guide grooves 11 and the guide blocks 12 cooperate to form a guide mechanism, which can limit the clamping plate 9 from shaking when sliding.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A precision plastic mold fastener, comprising a mold component and a connecting component: The mold component comprises a bottom plate (1), a lower mold (2) is placed on the top of the bottom plate (1), and the top of the bottom plate (1) is connected to a bracket (3) symmetrical with respect to the lower mold (2), a top plate (4) is installed on the top of the bracket (3), a lifting mechanism (5) is installed on the bottom of the top plate (4), and an upper mold (6) is arranged below the lifting mechanism (5), characterized in that: The bottom end of the lifting mechanism (5) is fixedly connected to a connecting plate (7) located at the top end of the upper mold (6); The connecting member comprises a slide groove (8) starting from the middle of the bottom end of the connecting plate (7) and communicating with the front and rear of the connecting plate. The bottom end of the connecting plate (7) is symmetrically engaged and slidably connected to two clamping plates (9) located in front and behind the upper mold (6) through the slide groove (8). In addition, the connecting plate (7) is also provided with a driving mechanism (10) for driving the two clamping plates (9) to slide in opposite directions simultaneously along the slide groove (8).

2. The precision plastic mold fastener according to claim 1, characterized in that: The driving mechanism (10) comprises a bearing seat (1001) installed in the middle of the slide groove (8), and a bidirectional screw rod (1002) located in the slide groove (8) and centered therewith is connected to the bearing seat (1001); in addition, the top end of each clamping plate (9) is connected to a slider (1003) which is slidably connected to the slide groove (8) and is threadedly connected to the bidirectional screw rod (1002); in addition, a rotating mechanism (1004) for driving the bidirectional screw rod (1002) to rotate is also provided on the connecting plate (7).

3. The precision plastic mold fastener according to claim 2, characterized in that: The rotating mechanism (1004) comprises hand wheels installed at both ends of the bidirectional screw rod (1002) and located outside the connecting plate (7).

4. The precision plastic mold fastener according to claim 2, characterized in that: The bearing seat (1001) is mainly composed of a shell and a bearing. The inner wall of the slide groove (8) is fixedly connected to the outer wall of the shell. The inner wall of the shell is fixed to the outer ring of the bearing. The inner ring of the bearing and the bidirectional screw rod (1002) are inserted through the two-way screw rod (1002) after interference fit.

5. The precision plastic mold fastener according to claim 2, characterized in that: The bottom end of the connecting plate (7) is provided with two guide grooves (11) symmetrical with respect to the slide groove (8); in addition, the bottom end of each clamping plate (9) is connected with two guide blocks (12) which are respectively slidably connected with the corresponding guide grooves (11).

6. The precision plastic mold fastener according to claim 1, characterized in that: The lifting mechanism (5) is a hydraulic cylinder installed at the bottom end of the top plate (4), and the bottom end of the hydraulic cylinder is fixedly connected to the top end of the connecting plate (7).

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