Positioning device for plastic mold

Abstract

The utility model relates to the technical field of plastic mould positioning, in particular to a positioning device for a plastic mould, which comprises a base, a groove is arranged in the middle of the upper end of the base, a positioning driving mechanism is arranged in the groove, a bottom mould is clamped and mounted in the middle of the positioning driving mechanism, and a top mould is hermetically covered at the upper end of the bottom mould. The positioning driving mechanism is fixedly connected with two groups of lifting mechanisms for controlling the lifting of the top mold, each lifting mechanism comprises an electric push rod, the electric push rods are fixedly connected to the upper end of the electric driving mechanism, the output ends of the electric push rods are fixedly connected with clamping jaws, and the clamping jaws are clamped and matched with the two ends of the top mold; the positioning driving mechanism is driven to operate, the two ends of the bottom mold are extruded and positioned, meanwhile, the clamping jaws are connected with the two ends of the top mold in a clamped mode, and when the output end of the electric push rod stretches out and draws back, the top mold is driven to ascend and descend, so that the top mold and the bottom mold are combined or demolded. And the external position of the plastic mold can be conveniently positioned.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold positioning, specifically a positioning device for plastic molds. Background Technology

[0002] Plastic mold is a type of combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. It is usually composed of two mold halves that are joined together, and the two halves need to be guided and positioned when joined together.

[0003] Existing positioning devices for plastic molds, such as the guiding and positioning mechanism for plastic molds proposed in patent application number "CN202421268095.0", include a fixed mold frame, a moving mold frame, an electric cylinder, an extension shaft, and other structures. Guide rods are inserted at the four corners of the bottom surface of the moving mold frame. The guide rods correspond to and cooperate with guide grooves. An end cap is detachably installed at the top of the guide rod. A limit plate is detachably installed in the middle of the side wall of the guide rod. A rubber pad is fixedly connected to the bottom surface of the limit plate. The rubber pad corresponds to and cooperates with a recess. This facilitates the disassembly and assembly of the guide rods for maintenance, repair, or replacement. The bottom surface of the first horizontal plate is fixedly connected to the top surface of the moving mold frame.

[0004] However, the existing technology has defects. The moving mold frame is fixedly connected to the first horizontal plate used to drive its lifting and lowering, which makes it difficult to separate the plastic mold as a whole from the device and to locate the external position of the plastic mold. Therefore, a positioning device for plastic mold is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for plastic molds to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A positioning device for plastic molds includes a base with a groove in the middle of the upper end of the base. A positioning drive mechanism is disposed in the groove. A bottom mold is snapped into the middle of the positioning drive mechanism. A top mold is sealed on the upper end of the bottom mold. Two sets of lifting mechanisms for controlling the lifting of the top mold are fixedly connected to the positioning drive mechanism. The lifting mechanism includes an electric push rod, which is fixedly connected to the upper end of the electric drive mechanism. A pawl is fixedly connected to the output end of the electric push rod, and the pawl engages with both ends of the top mold.

[0008] Preferably, the positioning drive mechanism includes a gear, which is rotatably mounted at the center of the groove. Racks are slidably connected to both sides of the groove. The two sets of racks are centrally symmetrical about the gear, and one side of each set of racks meshes with the gear. A clamping plate is fixedly connected to the upper end of each set of racks. The two clamping plates are centrally symmetrical about the gear. An electric push rod is fixedly connected to the upper end of the clamping plate.

[0009] Preferably, each of the two sets of clamping plates has a side plate fixed to one side, and the side plate is set to an "L" shape. The side plate is used to abut and position the bottom mold at the side corner.

[0010] Preferably, both sets of racks are fixedly connected to sliders on the side away from the gear, and grooves are provided on both sides of the groove, with the sliders slidably connected in the grooves.

[0011] Preferably, the lower end of the top mold is threaded with multiple sets of threaded posts, and each set of threaded posts is fixedly connected to a guide post at its lower end. The upper end of the bottom mold has multiple sets of guide holes, and the multiple sets of guide posts are respectively inserted into the multiple sets of guide holes for installation.

[0012] Preferably, each of the multiple sets of guide holes has a receiving hole at its upper end, a round cover is fixedly connected to the side wall of the guide post, a spring is fixedly connected to the lower end of the round cover, and the spring is inserted into the receiving hole.

[0013] The beneficial effects of this utility model are:

[0014] This utility model connects the bottom mold and the top mold, and then locks them in the positioning drive mechanism. The positioning drive mechanism is driven to run, and the bottom mold is squeezed and positioned at both ends. At the same time, the claws lock the top mold at both ends. When the output end of the electric push rod extends or retracts, it drives the top mold to rise or fall, so that the top mold and the bottom mold can be merged or demolded. This positioning device can separate the plastic mold as a whole from the device and facilitates the positioning of the external position of the plastic mold. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the positioning drive mechanism of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the plastic mold of this utility model;

[0019] Figure 4 This is a schematic diagram of the guide column structure of this utility model;

[0020] The attached figures are labeled as follows:

[0021] 1. Base; 2. Groove; 3. Bottom mold; 4. Top mold; 5. Gear; 6. Slide groove; 7. Rack; 8. Clamping plate; 9. Side plate; 10. Electric push rod; 11. Claw; 12. Threaded post; 13. Round cover; 14. Guide post; 15. Spring; 16. Guide hole; 17. Accommodation hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] A positioning device for plastic molds, such as Figures 1-4 As shown, the device includes a base 1, with a groove 2 in the middle of the upper end of the base 1. A positioning drive mechanism is installed in the groove 2. A bottom mold 3 is snapped onto the middle of the positioning drive mechanism. A top mold 4 is sealed on the upper end of the bottom mold 3. Two sets of lifting mechanisms for controlling the lifting of the top mold 4 are fixed to the positioning drive mechanism. The lifting mechanism includes an electric push rod 10, which is fixed to the upper end of the electric drive mechanism. A claw 11 is fixed to the output end of the electric push rod 10, and the claw 11 is snapped onto both ends of the top mold 4.

[0024] By connecting the bottom mold 3 and the top mold 4, an integral plastic mold is formed, which is then locked in the positioning drive mechanism (at this time, the positioning drive mechanism is in the open state, which facilitates the installation of the plastic mold inside it). The positioning drive mechanism is driven to run, pressing and positioning both ends of the bottom mold 3. At the same time, the claws 11 lock the two ends of the top mold 4. When the output end of the electric push rod 10 (model DYTP450- / 110) extends or retracts, it drives the top mold 4 to rise and fall, so that the top mold 4 and the bottom mold 3 are merged or demolded. This positioning device can separate the plastic mold as a whole from the device and facilitates the positioning of the external position of the plastic mold.

[0025] like Figure 2 As shown, the positioning drive mechanism includes a gear 5, which is rotatably mounted at the center of the groove 2. Racks 7 are slidably connected to both sides of the groove 2. The two sets of racks 7 are centrally symmetrical about the gear 5, and one side of each set of racks 7 meshes with the gear 5 for transmission. Clamping plates 8 are fixedly connected to the upper ends of the two sets of racks 7. The two sets of clamping plates 8 are centrally symmetrical about the gear 5. An electric push rod 10 is fixedly connected to the upper end of the clamping plate 8.

[0026] A motor is installed at the bottom of the base 1. This motor drives the gear 5 to rotate. The rotation of the gear 5 drives the two sets of racks 7 to slide, so that the two sets of clamping plates 8 move away from or closer to each other. The plastic mold is installed between the two sets of clamping plates 8. The two sets of clamping plates 8 squeeze and position the two ends of the plastic mold to prevent the plastic mold from shifting and to facilitate the use of the plastic mold. When the clamping plates 8 squeeze the plastic mold, the electric push rod 10 and the chuck 11 approach the top mold 4 at the same time. The chuck 11 engages with the top mold 4, driving the top mold 4 to rise and fall.

[0027] like Figures 1-2 As shown, each of the two sets of clamping plates 8 has a side plate 9 fixedly connected to one side. The side plate 9 is L-shaped and is used to abut and position the bottom mold 3 at the side corner.

[0028] When the clamping plate 8 approaches the plastic mold, the side plate 9 abuts against the side corners of both ends of the bottom mold 3 to prevent the plastic mold from shifting back and forth inside the positioning drive mechanism.

[0029] like Figure 2 As shown, both sets of racks 7 are fixed to sliders on the side away from the gear 5, and grooves 6 are provided on both sides of the groove 2, with the sliders slidably connected in the grooves 6.

[0030] The rack 7 is slidably connected to the side wall of the groove 2 via the slider, which restricts the sliding path of the rack 7 and prevents the rack 7 from detaching from the groove 2.

[0031] like Figures 3-4 As shown, the lower end of the top mold 4 is threaded with multiple sets of threaded posts 12, and the lower end of each set of threaded posts 12 is fixed with a guide post 14. The upper end of the bottom mold 3 has multiple sets of guide holes 16, and the multiple sets of guide posts 14 are respectively inserted into the multiple sets of guide holes 16.

[0032] The guide post 14 is threaded to the lower end of the top mold 4 via the threaded post 12, which facilitates disassembly and replacement. The guide post 14 is inserted into the guide hole 16, which facilitates the positioning of the top mold 4 and the bottom mold 3.

[0033] like Figures 3-4 As shown, each of the multiple sets of guide holes 16 has a receiving hole 17 at its upper end. A round cover 13 is fixedly connected to the side wall of the guide post 14. A spring 15 is fixedly connected to the lower end of the round cover 13. The spring 15 is inserted into the receiving hole 17.

[0034] The top mold 4 and the bottom mold 3 are joined together. The spring 15 enters the receiving hole 17. The spring 15 is compressed to buffer the molds when they are joined together, preventing the molds from being worn due to excessive force during the joining process.

[0035] The working principle of the positioning device for plastic molds provided by this utility model is as follows:

[0036] By connecting the bottom mold 3 and the top mold 4, an integral plastic mold is formed. Then, it is clamped in the positioning drive mechanism, which drives the positioning drive mechanism to run. The two sets of clamping plates 8 press and position the two ends of the bottom mold 3, while the claws 11 clamp the two ends of the top mold 4. When the output end of the electric push rod 10 extends and retracts, it drives the top mold 4 to rise and fall, so that the top mold 4 and the bottom mold 3 are merged or demolded. This positioning device can separate the plastic mold as a whole from the device and facilitates the positioning of the external position of the plastic mold.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A positioning device for a plastic mold, comprising a base (1), characterized in that, The base (1) has a groove (2) in the middle of its upper end. A positioning drive mechanism is provided in the groove (2). A bottom mold (3) is installed in the middle of the positioning drive mechanism. A top mold (4) is provided on the upper end of the bottom mold (3). Two sets of lifting mechanisms for controlling the lifting of the top mold (4) are fixed on the positioning drive mechanism. The lifting mechanism includes an electric push rod (10). The electric push rod (10) is fixed on the upper end of the electric drive mechanism. A claw (11) is fixed on the output end of the electric push rod (10). The claw (11) is engaged with both ends of the top mold (4).

2. The positioning device for a plastic mold according to claim 1, characterized in that, The positioning drive mechanism includes a gear (5), which is rotatably mounted at the center of the groove (2). Racks (7) are slidably connected to both sides of the groove (2). The two sets of racks (7) are centrally symmetrical about the gear (5), and one side of each set of racks (7) meshes with the gear (5). The upper ends of the two sets of racks (7) are fixedly connected to clamps (8), which are centrally symmetrical about the gear (5). An electric push rod (10) is fixedly connected to the upper end of the clamps (8).

3. A positioning device for a plastic mold according to claim 2, characterized in that, Both sets of clamps (8) have a side plate (9) fixedly connected to one side. The side plate (9) is L-shaped and is used to abut and position the bottom mold (3) at the side corner.

4. A positioning device for a plastic mold according to claim 2, characterized in that, Both sets of racks (7) have sliders fixed to the side away from the gear (5), and grooves (6) are provided on both sides of the groove (2), with the sliders slidably connected in the grooves (6).

5. A positioning device for a plastic mold according to claim 1, characterized in that, The lower end of the top mold (4) is threaded with multiple sets of threaded columns (12), and each set of threaded columns (12) is fixed with a guide column (14). The upper end of the bottom mold (3) is provided with multiple sets of guide holes (16), and the multiple sets of guide columns (14) are respectively inserted into the multiple sets of guide holes (16).

6. A positioning device for a plastic mold according to claim 5, characterized in that, Each of the multiple sets of guide holes (16) has a receiving hole (17) at its upper end. A round cover (13) is fixed to the side wall of the guide post (14). A spring (15) is fixed to the lower end of the round cover (13). The spring (15) is inserted into the receiving hole (17).

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