Multi-station injection molding mold

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a multi-station injection molding mold which comprises a base, a support, a telescopic piece, an upper mold and an injection molding pipe, the support is fixedly installed in the middle of the top of the base, the telescopic piece is fixedly installed at the top of the support, and the upper mold is fixedly installed at the bottom of the telescopic piece. The injection molding device comprises a positioning mechanism and a cooling mechanism, the positioning mechanism is arranged on the top of the base, and the cooling mechanism is arranged in the base. According to the multi-station injection molding mold, the positioning mechanism is arranged, a gear and a rack are meshed to drive the movable plate and the two lower molds to move left and right, switching of the two stations is achieved, movable tooth blocks at the left end and the right end are matched to position the two lower molds, the lower molds are located under the upper mold, and therefore the injection molding quality is improved; and by arranging the cooling mechanism, cooling liquid in the box body enters the cavity from the liquid distribution pipe along the connecting pipe by starting the pump body, so that injection molding of a product is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is multi -position injection molding mold. BACKGROUND

[0002] Plastic is heated and melts in the heating cylinder of injection molding machine first, then under the push of injection molding machine screw or piston, through nozzle and mold pouring system into mold cavity, finally hardens in the cavity, this is the simple process of injection molding, and the mold used for injection molding is called injection molding mold, injection mold is mainly used for the molding of thermoplastic plastic products, but in recent years, it is more and more used for the molding of thermosetting plastic, injection molding accounts for a large proportion in the molding of plastic products, so about half of the production of plastic molding mold is injection mold.

[0003] The existing injection mold is mostly single mold work, and the mold making speed is slow, and part of the multi -position injection, but its cooling effect is generally not conducive to demolding and cannot guarantee the temperature of the injection mold in the later period, resulting in the increase of injection working time.

[0004] The multi -position injection molding mold of the utility model can carry out injection work in multiple positions, and can cool the lower mold to take out the molded material, the low-temperature lower mold can be heated by the heating plate, so that it approaches the temperature of injection molding, the heating time of the electric heating wire on the lower mold can be reduced to ensure the stable injection work, thereby improving the work efficiency.

[0005] But the device does not have a positioning device when the mold switches in the use process, which causes the offset between the lower mold and the upper mold, thereby affecting the injection quality.

[0006] Therefore, we urgently need to provide a multi -position injection molding mold. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a multi -position injection molding mold to solve the problem of lacking positioning device when the mold switches in the use process, which causes the offset between the lower mold and the upper mold, thereby affecting the injection quality.

[0008] In order to achieve the above -mentioned purpose, the utility model provides the following technical scheme: multi -position injection molding mold, including base, support, telescopic part, upper mold and injection pipe, the support is fixedly installed in the middle part of the top of base, the telescopic part is fixedly installed in the top of support, the upper mold is fixedly installed in the bottom of telescopic part, the injection pipe is connected in the top of upper mold, the top of base is provided with injection device, and the injection device comprises positioning mechanism and cooling mechanism.

[0009] The positioning mechanism is arranged on the top of the base, and the cooling mechanism is arranged in the base.

[0010] The positioning mechanism comprises a fixed plate, a guide rod, a moving plate, a lower mold, a rack, a connecting rod, a spring, a movable tooth block, a motor, a rotating shaft and a gear. The fixed plate is fixedly installed on the left and right sides of the top of the base. The guide rod is fixedly installed on the side adjacent to the two fixed plates. The moving plate is slidably connected to the outside of the guide rod. The lower mold is fixedly installed on the left and right sides of the top of the moving plate. The rack is fixedly installed on the left side of the back of the moving plate. The connecting rod is fixedly installed on the left and right sides of the rack. The spring is installed on the outside of the connecting rod. The movable tooth block is slidably connected to the outside of the connecting rod. The motor is fixedly installed on the left side of the inner wall of the bracket. The rotating shaft is fixedly installed on the output end of the motor. The gear is fixedly installed on the outside of the lower end of the rotating shaft.

[0011] Preferably, the gear is in mesh with the rack, and the spring is located between the movable tooth block and the rack. The rotation of the gear and the meshing with the rack enable the moving plate to drive the lower mold to move leftward and rightward along the guide rod, so as to realize the switching of the two lower molds and the multi-station injection molding.

[0012] Preferably, the distance between the two lower molds is equal to the length of the rack. When the gear is in contact with the left end movable tooth block, the left lower mold is located directly below the upper mold. When the gear rotates counterclockwise, the gear meshes with the rack to drive the moving plate to move rightward along the guide rod. When the rack moves to the leftmost end, the gear is in contact with the left end movable tooth block, so as to drive the left end movable tooth block to slide along the connecting rod. At this time, the gear cannot mesh with the movable tooth block, so as to prevent the moving plate from moving. At this time, the left lower mold is located directly below the upper mold, so as to realize the positioning of the lower mold. Similarly, when the gear is in contact with the right end movable tooth block, the right lower mold is located directly below the upper mold.

[0013] Preferably, the connecting rod is provided with a baffle at one end. When the motor reverses, the gear reverses, and the baffle hinders the movable tooth block, so that the gear can mesh with the movable tooth block, and the moving plate can move reversely.

[0014] Preferably, the cooling mechanism comprises a box body, a pump body, a connecting pipe, a distribution pipe, a water outlet pipe and a water collecting tank. The box body is installed in the base. The pump body is installed on the top of the box body. The connecting pipe is connected to the top of the pump body. The distribution pipe is connected to the top of the pump body. The water outlet pipe is connected to one side of the lower mold. The water collecting tank is installed in the base and located in front of the box body.

[0015] Preferably, the left and right lower molds are internally provided with cavities, the left and right ends of the distribution pipe are connected with the two lower molds respectively, and the cooling liquid in the box is made to enter the cavities from the distribution pipe along the connecting pipe by starting the pump body, so that the injection molding of the product is accelerated.

[0016] Preferably, the water outlet pipe is connected with the water collecting tank at an end away from the lower mold, so that the cooling liquid in the lower mold flows to the water collecting tank through the water outlet pipe and is stored in the water collecting tank.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1. The multi-station injection molding mold is provided with the positioning mechanism, the movable plate and the two lower molds are driven to move left and right by the gear and the rack engagement, the switching of the two stations is realized, the two lower molds are positioned by the left and right movable tooth blocks, the lower mold is located directly below the upper mold, and therefore the injection molding quality is improved.

[0019] 2. The multi-station injection molding mold is provided with the cooling mechanism, the cooling liquid in the box is made to enter the cavities from the distribution pipe along the connecting pipe by starting the pump body, and therefore the injection molding of the product is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model;

[0021] Figure 2 It is a base internal structure sectional view of the utility model;

[0022] Figure 3 It is a rack and movable tooth block connection structure schematic view of the utility model;

[0023] Figure 4 It is a cooling mechanism structure schematic view of the utility model.

[0024] In the drawing: 1, base; 2, support; 3, telescopic part; 4, upper mold; 5, injection pipe; 601, fixed plate; 602, guide rod; 603, movable plate; 604, lower mold; 605, rack; 606, connecting rod; 607, spring; 608, movable tooth block; 609, motor; 610, rotating shaft; 611, gear; 701, box; 702, pump body; 703, connecting pipe; 704, distribution pipe; 705, water outlet pipe; 706, water collecting tank. DETAILED DESCRIPTION

[0025] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. Embodiment

[0026] The prior art existing at present does not have a positioning device during mold switching, which leads to the offset between the lower mold and the upper mold, thereby affecting the injection molding quality. Referring to Figures 1-4 , the embodiment provides a multi-station injection molding mold, which can position two lower molds and make the lower molds located directly below the upper mold, thereby improving the injection molding quality. The multi-station injection molding mold comprises a base 1, a support 2, an extension piece 3, an upper mold 4 and an injection pipe 5. The support 2 is fixedly installed at the top middle portion of the base 1. The extension piece 3 is fixedly installed at the top of the support 2. The extension piece 3 comprises a hydraulic cylinder and a hydraulic rod. The hydraulic cylinder is fixedly installed at the top of the support 2. The hydraulic rod is installed at the output end of the hydraulic cylinder. The upper mold 4 is fixedly installed at the bottom of the extension piece 3. The injection pipe 5 is connected to the top of the upper mold 4. The top of the base 1 is provided with an injection device. The injection device comprises a positioning mechanism and a cooling mechanism.

[0027] The positioning mechanism is arranged at the top of the base 1. The cooling mechanism is arranged inside the base 1.

[0028] The positioning mechanism comprises a fixed plate 601, a guide rod 602, a moving plate 603, lower molds 604, a rack 605, a connecting rod 606, a spring 607, movable tooth blocks 608, a motor 609, a rotating shaft 610 and a gear 611. The fixed plate 601 is fixedly installed on the top of the base 1 on the left and right sides, the guide rod 602 is fixedly installed on the side adjacent to the two fixed plates 601, the moving plate 603 is slidingly connected to the outside of the guide rod 602, the lower molds 604 are fixedly installed on the top of the moving plate 603 on the left and right sides, the distance between the lower molds 604 is equal to the length of the rack 605, and when the gear 611 is in contact with the left end movable tooth block 608 of the rack 605, at this time, the left lower mold 604 is located directly below the upper mold 4. When the gear 611 rotates counterclockwise, the gear 611 meshes with the rack 605 to drive the moving plate 603 to move right along the guide rod 602. When the rack 605 moves to the leftmost end, the gear 611 is in contact with the left end movable tooth block 608, so as to drive the left end movable tooth block 608 to slide along the connecting rod 606. At this time, the gear 611 cannot mesh with the movable tooth block 608, so as to prevent the moving plate 603 from moving. At this time, the left lower mold 604 is located directly below the upper mold 4, so as to realize the positioning of the lower mold 604. Similarly, when the gear 611 is in contact with the right end movable tooth block 608 of the rack 605, the right lower mold 604 is located directly below the upper mold 4. The rack 605 is fixedly installed on the back of the moving plate 603 on the left side. The connecting rod 606 is fixedly installed on the left and right sides of the rack 605. One end of the connecting rod 606 is provided with a baffle. The baffle hinders the movable tooth block 608. When the motor 609 reverses, the gear 611 reverses, and the baffle hinders the movable tooth block 608, so that the gear 611 can mesh with the movable tooth block 608, and the moving plate 603 reversely moves. The spring 607 is installed outside the connecting rod 606. The movable tooth block 608 is slidingly connected to the outside of the connecting rod 606. The motor 609 is fixedly installed on the inner wall of the bracket 2 on the left side. The rotating shaft 610 is fixedly installed on the output end of the motor 609. The gear 611 is fixedly installed outside the lower end of the rotating shaft 610. The gear 611 meshes with the rack 605. The spring 607 is located between the movable tooth block 608 and the rack 605. The gear 611 rotates and meshes with the rack 605, so as to drive the moving plate 603 to move left and right along the guide rod 602, realize the switching of the two lower molds 604, and realize multi-station injection molding. Embodiment

[0029] On the basis of Embodiment One, see Figures 1-4In order to accelerate injection molding, improve the efficiency of injection molding, the device is further provided with a cooling mechanism, the cooling mechanism includes a box body 701, a pump body 702, a connecting pipe 703, a distribution pipe 704, a water outlet pipe 705 and a water collecting tank 706, the box body 701 is installed inside the base 1, the pump body 702 is installed on the top of the box body 701, the connecting pipe 703 is connected to the top of the pump body 702, the distribution pipe 704 is connected to the top of the pump body 702, a cavity is formed in the lower mold 604, the left and right ends of the distribution pipe 704 are connected with two lower molds 604 respectively, the cooling liquid in the box body 701 is made to enter the cavity from the distribution pipe 704 along the connecting pipe 703 by starting the pump body 702, so as to accelerate the injection molding of the product, the water outlet pipe 705 is connected to one side of the lower mold 604, the end of the water outlet pipe 705 away from the lower mold 604 is connected with the water collecting tank 706, so that the cooling liquid in the lower mold 604 flows to the water collecting tank 706 through the water outlet pipe 705 for storage, and the water collecting tank 706 is installed inside the base 1 and located on the front of the box body 701.

[0030] In use, the telescopic part 3 is started to drive the upper mold 4 to move downward to complete the clamping with the left lower mold 604, then the injection pipe 5 is used to inject the injection liquid into the lower mold 604, and the pump body 702 is started, at this time, the cooling liquid flows into the cavity formed in the lower mold 604 through the connecting pipe 703 and the distribution pipe 704 to cool the injection liquid in the lower mold 604, so as to accelerate the speed of injection molding.

[0031] When it is needed to switch to the right station, the motor 609 is started to drive the rotating shaft 610 and the gear 611 to rotate clockwise, the gear 611 is engaged with the rack 605, so that the rack 605 drives the moving plate 603 to move leftward along the guide rod 602. When the gear 611 contacts the right end movable tooth block 608, the movable tooth block 608 slides along the connecting rod 606 as the gear 611 continues to rotate, at this time, the gear 611 cannot be engaged with the movable tooth block 608 any more, so the moving plate 603 stops moving, at this time, the right lower mold 604 is just located below the upper mold 4, then the telescopic part 3 is started again to drive the upper mold 4 to move downward to perform injection molding.

[0032] When it is needed to switch back to the left station, the motor 609 is reversed to drive the rotating shaft 610 and the gear 611 to rotate counterclockwise, and the blocking piece cooperates with the right end movable tooth block 608 to hinder the right end movable tooth block 608, at this time, the movable tooth block 608 can be engaged with the gear 611 again, so that the rack 605 drives the moving plate 603 to move rightward along the guide rod 602 until the gear 611 contacts the left end movable tooth block 608, at this time, the left lower mold 604 is located below the upper mold 4, so the switching and positioning of the left and right stations are realized.

[0033] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are not intended to denote a physical order, quantity, or importance, but rather are used for the purpose of nomenclature.

Claims

1. A multi-station injection molding die, comprising a base (1), a bracket (2), a telescopic component (3), an upper mold (4), and an injection tube (5), wherein the bracket (2) is fixedly installed at the top center of the base (1), the telescopic component (3) is fixedly installed at the top of the bracket (2), the upper mold (4) is fixedly installed at the bottom of the telescopic component (3), and the injection tube (5) is connected to the top of the upper mold (4), characterized in that: The base (1) is provided with an injection molding device on its top, the injection molding device including a positioning mechanism and a cooling mechanism; The positioning mechanism is located on the top of the base (1), and the cooling mechanism is located inside the base (1); The positioning mechanism includes a fixed plate (601), a guide rod (602), a movable plate (603), a lower mold (604), a rack (605), a connecting rod (606), a spring (607), a movable toothed block (608), a motor (609), a rotating shaft (610), and a gear (611). The fixed plate (601) is fixedly installed on the left and right sides of the top of the base (1). The guide rod (602) is fixedly installed on the adjacent side of the two fixed plates (601). The movable plate (603) is slidably connected to the outside of the guide rod (602). The lower mold (604) The rack (605) is fixedly installed on the left side of the back of the moving plate (603), the connecting rod (606) is fixedly installed on the left and right sides of the rack (605), the spring (607) is installed on the outside of the connecting rod (606), the movable tooth block (608) is slidably connected to the outside of the connecting rod (606), the motor (609) is fixedly installed on the left side of the inner wall of the bracket (2), the rotating shaft (610) is fixedly installed on the output end of the motor (609), and the gear (611) is fixedly installed on the outside of the lower end of the rotating shaft (610).

2. The multi-station injection molding die according to claim 1, characterized in that: The gear (611) meshes with the rack (605), and the spring (607) is located between the movable tooth block (608) and the rack (605).

3. The multi-station injection molding die according to claim 1, characterized in that: The distance between the two lower molds (604) is equal to the length of the rack (605), and when the gear (611) contacts the movable tooth block (608) at the left end of the rack (605), the lower mold (604) on the left side is located directly below the upper mold (4).

4. The multi-station injection molding die according to claim 1, characterized in that: A baffle is provided at one end of the connecting rod (606).

5. The multi-station injection molding die according to claim 1, characterized in that: The cooling mechanism includes a housing (701), a pump body (702), a connecting pipe (703), a liquid distribution pipe (704), a water outlet pipe (705), and a water collection tank (706). The housing (701) is installed inside the base (1). The pump body (702) is installed on the top of the housing (701). The connecting pipe (703) is connected to the top of the pump body (702). The liquid distribution pipe (704) is connected to the top of the pump body (702). The water outlet pipe (705) is connected to one side of the lower mold (604). The water collection tank (706) is installed inside the base (1) on the front of the housing (701).

6. The multi-station injection molding die according to claim 5, characterized in that: The two lower molds (604) on the left and right sides have cavities inside, and the two ends of the liquid distribution pipe (704) are respectively connected to the two lower molds (604).

7. The multi-station injection molding die according to claim 5, characterized in that: The end of the water outlet pipe (705) away from the lower mold (604) is connected to the water collection tank (706).

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