Hollow plastic injection mold

Abstract

The utility model discloses a hollow plastic injection mold, which relates to the technical field of injection molds, and comprises a bottom plate, a lower mold and an upper mold, a lifting lug is fixed at the top of the upper mold, the hollow plastic injection mold also comprises a stabilizing mechanism for ensuring the stability of the upper mold during mold closing, and the stabilizing mechanism comprises four groups of sliding seats which are respectively arranged on four sides of the lower mold in a sliding manner; sliding seams are formed in the four side edges of the bottom plate, driving parts used for acting on the sliding seats to move are arranged in the sliding seams, a control cavity is formed in the inner wall of the center of the bottom plate, and control parts matched with the driving parts are arranged in the control cavity. Through the arrangement of the stabilizing mechanism, when a crane is used for hoisting an upper die to move downwards to be combined with a lower die, a control part in the stabilizing mechanism acts on the lead screws on the inner sides of the four groups of sliding seams to synchronously rotate, so that the sliding blocks on the rod bodies of the four groups of lead screws synchronously slide towards the middle part of the bottom plate, and the four groups of sliding seats are respectively in contact with four edges of the upper die; and therefore, manual work is replaced to stably support the upper die in four directions, and the stability of the upper die during descending is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a hollow plastic injection mold. Background Art

[0002] In the process of making plastic products, plastic injection molds are one of the indispensable equipment. Injection molds are a tool for producing plastic products and also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and melted materials into the mold cavity under high pressure, and obtaining a molded product after cooling and solidification.

[0003] In order to facilitate the clamping of the upper and lower molds of the injection mold, the top of the upper mold of the injection mold is generally equipped with a lifting lug, so that the upper mold can be connected to the crane by a chain lock, and then the upper mold can be easily lifted by the crane;

[0004] However, in practice, when the upper mold is lifted by a crane, there is often a certain degree of instability due to the chain connection, which makes it very easy for the upper mold to shake when it is descending and merging with the lower mold, so that it needs to be stabilized manually in real time, and the actual operation is still very inconvenient. Utility Model Content

[0005] In order to solve the above technical problems, a hollow plastic injection mold is provided, which solves the problem that when the upper mold is lifted by a crane in the prior art, the upper mold is often unstable due to the chain lock connection, which makes the upper mold very easy to shake when it is descending and merging with the lower mold, so that it needs to be manually stabilized in real time, and its actual operation is still very inconvenient.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a hollow plastic injection mold, comprising a bottom plate, a lower mold arranged on the top of the bottom plate, and an upper mold arranged above the lower mold, a lifting ear is fixed on the top of the upper mold, and also includes a stabilizing mechanism for ensuring the stability of the upper mold when the mold is closed;

[0007] The stabilizing mechanism includes four groups of slide seats slidably arranged on the four sides of the lower mold respectively, and sliding grooves are opened on the four sides of the base plate. Driving components for actuating the movement of the slide seats are arranged in the sliding grooves. A control cavity is arranged in the inner wall in the center of the base plate, and a control component cooperating with the driving component is arranged in the control cavity.

[0008] Preferably, the driving component comprises a screw rod transversely arranged in the sliding slot, a slider fixed to the bottom end of the sliding seat is threadedly connected to the rod body of the screw rod, and the slider slides in the inner side of the sliding slot.

[0009] Preferably, the control component includes a driving rod vertically rotatably arranged on the inner wall of the top end of the control cavity and four groups of transmission columns arranged around the rod body of the driving rod, a first bevel gear is tightly sleeved on the rod body of the driving rod, one end of the transmission column is inserted into the sliding slot and fixed to the screw rod, and the other end of the transmission column is fixed with a second bevel gear meshing with the first bevel gear.

[0010] Preferably, the control component also includes a vortex rod arranged at the lower part of the control cavity, the bottom end of the driving rod body is fastened with a turbine that meshes with the vortex rod, and a control rod is arranged on the outer side of the bottom plate. The control rod rotates to penetrate into the control cavity and is fixedly connected to one end of the vortex rod.

[0011] Preferably, a mounting groove is provided on a side of the slide seat facing the upper mold, and a plurality of connecting rods are rotatably arranged between inner walls on both sides of the mounting groove, and connecting rollers are tightly sleeved on the rod bodies of the connecting rods.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] (1) Through the setting of the stabilizing mechanism, when the upper mold is lifted downward by a crane to close the mold with the lower mold, the control components in the stabilizing mechanism are used to cause the four sets of screws on the inner side of the sliding joints to rotate synchronously, so that the sliders on the rod bodies of the four sets of screws slide synchronously toward the middle of the bottom plate, so that the four sets of slide seats contact the four sides of the upper mold respectively, thereby replacing manual stabilization of the upper mold from four directions, ensuring the stability of the upper mold when it is descending.

[0014] (2) By setting the connecting rod and the connecting roller, when the slide is driven by the driving component to slide toward the upper mold, the connecting roller can directly contact the side wall of the upper mold, and the connecting roller can rotate along with the downward movement of the upper mold. In this way, the slide can be prevented from directly contacting the side wall of the upper mold in a plane without hindering the flexibility of the upper mold when it is moving downward, thereby reducing friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0018] The numbers in the figure are:

[0019] 1. Bottom plate; 2. Upper die; 3. Lower die; 4. Lifting ear; 5. Sliding seat; 6. Sliding slot; 7. Sliding block; 8. Screw rod; 9. Control chamber; 10. Transmission column; 11. Driving rod; 12. First bevel gear; 13. Second bevel gear; 14. Turbine; 15. Turbine rod; 16. Control rod; 17. Mounting groove; 18. Connecting rod; 19. Connecting roller. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0021] Reference Figure 1-3 As shown, a hollow plastic injection mold comprises a bottom plate 1, a lower mold 3 arranged on the top of the bottom plate 1, and an upper mold 2 arranged above the lower mold 3, and a lifting ear 4 is fixed on the top of the upper mold 2;

[0022] By setting the lifting lug 4, the lifting lug 4 is connected to a crane by means of a chain lock, so that the upper mold 2 is lifted by the crane, replacing manpower so that the upper mold 2 can be easily molded with the lower mold 3.

[0023] Further, refer to Figure 2 As shown, it is worth noting that it also includes a stabilizing mechanism for ensuring the stability of the upper mold 2 during mold closing;

[0024] The stabilizing mechanism includes four groups of slide seats 5 slidably arranged on four sides of the lower mold 3, and the four sides of the bottom plate 1 are provided with sliding slots 6, and the sliding slots 6 are provided with driving components for moving the slide seats 5. The inner wall at the center of the bottom plate 1 is provided with a control cavity 9, and the control cavity 9 is provided with a control component that cooperates with the driving component.

[0025] The driving component includes a screw rod 8 which is transversely arranged in the sliding slot 6. A slider 7 which is fixed to the bottom end of the sliding seat 5 is threadedly connected to the rod body of the screw rod 8. The slider 7 slides in the inner side of the sliding slot 6.

[0026] By setting up the stabilizing mechanism, when a crane is used to lift the upper mold 2 downward to close the mold with the lower mold 3, the control components in the stabilizing mechanism are used to cause the screw rods 8 on the inner sides of the four sliding slots 6 to rotate synchronously, so that the sliders 7 on the rod bodies of the four screw rods 8 slide synchronously toward the middle of the bottom plate 1, so that the four slide seats 5 contact the four sides of the upper mold 2 respectively, thereby replacing manual stabilization of the upper mold 2 from four directions, and ensuring the stability of the upper mold 2 when it is descending.

[0027] Further, refer to Figure 3As shown, it is worth noting that the control component includes a driving rod 11 vertically rotatably arranged on the inner wall of the top end of the control cavity 9 and four sets of transmission columns 10 arranged around the rod body of the driving rod 11, a first bevel gear 12 is tightly sleeved on the rod body of the driving rod 11, one end of the transmission column 10 penetrates into the sliding slot 6 and is fixed to the screw rod 8, and the other end of the transmission column 10 is fixed with a second bevel gear 13 meshing with the first bevel gear 12;

[0028] The control component also includes a worm rod 15 disposed at the lower part of the control cavity 9, a turbine 14 meshing with the worm rod 15 is fastened and sleeved at the bottom end of the driving rod 11, and a control rod 16 is disposed on the outer side of the bottom plate 1, and the control rod 16 rotates to penetrate into the control cavity 9 and is fixedly connected to one end of the worm rod 15;

[0029] The knob operating lever 16, that is, the action vortex rod 15 is meshed with the turbine 14, providing rotational force for the driving rod 11, causing the first bevel gear 12 to synchronously mesh with the second bevel gear 13 on the four sets of transmission columns 10 when the driving rod 11 rotates, thereby synchronously providing rotational force for the four sets of transmission columns 10 and the screw 8.

[0030] Further, refer to Figure 2 As shown, it is worth noting that a mounting groove 17 is provided on one side of the slide 5 facing the upper mold 2, and a plurality of connecting rods 18 are rotatably provided between the inner walls on both sides of the mounting groove 17, and a connecting roller 19 is tightly sleeved on the rod body of the connecting rod 18;

[0031] Through the arrangement of the connecting rod 18 and the connecting roller 19, when the slide 5 is driven by the driving component to slide toward the upper mold 2, the connecting roller 19 can directly contact the side wall of the upper mold 2, and the connecting roller 19 can rotate along with the downward movement of the upper mold 2. In this way, the slide 5 can be prevented from directly contacting the side wall of the upper mold 2 in a plane without hindering the flexibility of the upper mold 2 when it moves downward, thereby reducing friction.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hollow plastic injection mold, comprising a bottom plate (1), a lower mold (3) arranged on the top of the bottom plate (1), and an upper mold (2) arranged above the lower mold (3), wherein a lifting ear (4) is fixed on the top of the upper mold (2), characterized in that: It also includes a stabilizing mechanism for ensuring the stability of the upper mold (2) during mold closing; The stabilizing mechanism comprises four groups of slide seats (5) respectively slidably arranged on four sides of the lower mold (3); sliding slots (6) are provided on the four sides of the base plate (1); a driving component for actuating the movement of the slide seats (5) is provided in the sliding slots (6); a control cavity (9) is provided in the inner wall at the center of the base plate (1); a control component cooperating with the driving component is provided in the control cavity (9).

2. A hollow plastic injection mold according to claim 1, characterized in that: The driving component comprises a screw rod (8) arranged transversely in the sliding slot (6); a slider (7) fixed to the bottom end of the sliding seat (5) is threadedly connected to the rod body of the screw rod (8); and the slider (7) slides in the inner side of the sliding slot (6).

3. A hollow plastic injection mold according to claim 2, characterized in that: The control component comprises a driving rod (11) vertically rotatably arranged on the inner wall of the top end of the control chamber (9) and four groups of transmission columns (10) arranged around the rod body of the driving rod (11); a first bevel gear (12) is tightly sleeved on the rod body of the driving rod (11); one end of the transmission column (10) penetrates into the sliding slot (6) and is fixed to the screw rod (8); and a second bevel gear (13) meshing with the first bevel gear (12) is fixed to the other end of the transmission column (10).

4. A hollow plastic injection mold according to claim 3, characterized in that: The control component also includes a worm gear (15) arranged at the lower part of the control cavity (9); the bottom end of the rod body of the driving rod (11) is tightly sleeved with a turbine (14) meshing with the worm gear (15); and a control rod (16) is arranged on the outer side of the bottom plate (1); the control rod (16) rotates to penetrate into the control cavity (9) and is fixedly connected to one end of the worm gear (15).

5. The hollow plastic injection mold according to claim 1, characterized in that: A mounting groove (17) is provided on a side of the slide seat (5) facing the upper mold (2), and a plurality of connecting rods (18) are rotatably arranged between the inner walls on both sides of the mounting groove (17), and connecting rollers (19) are tightly sleeved on the rod bodies of the connecting rods (18).

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