Injection mold with flip cover structure

Abstract

The invention relates to the technical field of injection molds, in particular to an injection mold with a flip structure, which comprises a bottom plate and a panel mounted on an injection molding machine, a runner plate is arranged at the bottom end of the panel, a front mold is arranged at the bottom end of the runner plate, a front mold core is arranged at the bottom end of the front mold, and a demolding assembly is arranged in an inner cavity of the front mold core. A mold locking buckle is arranged on the outer wall of the front mold, a first push plate is arranged on the other side of the mold locking buckle, a rear mold core is fixedly embedded in the top end of the first push plate, a support is arranged on one side of the outer wall of the first push plate, and an air cylinder is fixedly embedded in the left side of an inner cavity of the support. The injection mold with the turning cover structure solves the problems that a cover of a workpiece cannot be tightly covered with a workpiece body after injection molding is conducted on the workpiece with the cover through an injection mold in the prior art, workers need to conduct cover closing operation on the workpiece manually after demolding, one technological process is added, and consequently the production cost is increased.

Description

Technical Field

[0001] The invention relates to the technical field of injection moulds, in particular to an injection mould with a flip cover structure. Background Art

[0002] Injection molds are tools that are used in the plastic processing industry to match plastic molding machines and give plastic products a complete configuration and precise size. Due to the wide variety of plastics and processing methods, the structures of plastic molding machines and plastic products vary in complexity, and the types and structures of injection molds are also diverse. Injection molds are a tool for producing plastic products. It is composed of several groups of parts, and there is a molding cavity in this combination. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the molding cavity and cooled and shaped in the cavity. Then the upper and lower molds are separated, and the product is ejected from the mold cavity and leaves the mold through the ejection system. Finally, the mold is closed for the next injection molding. The entire injection molding process is carried out in a cycle. Generally, the injection mold consists of a movable mold and a fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to remove the plastic product.

[0003] However, the injection mold of the prior art cannot tightly close the cover of the workpiece with the workpiece body after injection molding the workpiece with the cover, and the staff needs to manually close the cover of the workpiece after demolding, which adds a process flow and increases the production cost. To solve this problem, an injection mold with a flip cover structure is provided. Summary of the invention

[0004] The purpose of the present invention is to provide an injection mold with a flip cover structure to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection mold with a flip cover structure, comprising a base plate and a panel installed on an injection molding machine, a flow channel plate is arranged at the bottom end of the panel, a front mold is arranged at the bottom end of the flow channel plate, a front mold core is arranged at the bottom end of the front mold, a demolding assembly is arranged in the inner cavity of the front mold core, a locking buckle is arranged on the outer wall of the front mold, a first push plate is arranged on the other side of the locking buckle, a rear mold core is fixedly embedded in the top end of the first push plate, a bracket is arranged on one side of the outer wall of the first push plate, a cylinder is fixedly embedded in the left side of the inner cavity of the bracket, a rack is arranged at the output end of the cylinder, and the rack The outer part of the sliding assembly is slidably sleeved with a sliding assembly, a key is provided on the right side of the sliding assembly, a wear-resistant block is provided on the top of the first push plate, a limit plate is provided on the top of the first push plate, a guide rail is provided on the top of the first push plate, the sliding assembly is embedded in the inner cavity of the guide rail, the inner cavity of the sliding assembly is rotatably connected with a rotating column through a bearing, the front end of the rotating column extends to the front end of the sliding assembly and is fixedly connected with a turntable, the turntable is eccentrically provided with a rotating shaft, the other end of the rotating shaft extends to the other side of the top of the first push plate, the outer wall of the rotating column is fixedly sleeved with a gear, and the gear is located in the inner cavity of the sliding assembly.

[0005] Preferably, the rack is meshed with the gear.

[0006] Preferably, a second oil cylinder is provided at the top of the base plate, and a second ejector plate and a third ejector plate are fixedly sleeved on the output end of the second oil cylinder, a connecting rod is fixedly connected to one side of the top of the second ejector plate, and a connecting block is fixedly connected to the top of the connecting rod, and the connecting block is embedded in the first push plate.

[0007] Preferably, a first oil cylinder is disposed on the first push plate, a second push plate is connected to the other side of the first oil cylinder, and a rear mold insert is fixedly inserted into the inner cavity of the second push plate.

[0008] Preferably, the demolding assembly includes a first ejector plate, a simple air cylinder, a mushroom ejector rod, a spring and a slider, the simple air cylinder is arranged at the top of the inner cavity of the front mold, the first ejector plate is arranged at the output end of the simple air cylinder, the mushroom ejector rod is arranged at the output end of the simple air cylinder, the mushroom ejector rod penetrates the front mold core and extends to the bottom end of the front mold core, the spring is fixedly embedded in the inner cavity of the front mold core, the slider is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to one side of the inner wall of the front mold core.

[0009] Preferably, the bottom end of the mushroom push rod fits in with the top end of the inner cavity of the front mold core, and the outer wall of the sliding block fits in with the inner wall of the front mold core.

[0010] Preferably, a guide rod is provided at the bottom end of the flow channel plate, and the guide rod is slidably inserted into the front mold, the first push plate and the second push plate in sequence.

[0011] Preferably, rear mold inserts are fixedly connected to the second ejector plate and the third ejector plate.

[0012] Preferably, a third oil cylinder is provided at the top of the bottom plate, a fourth ejector plate and a fifth ejector plate are provided at the output end of the third oil cylinder, push tubes are fixedly connected to the fourth ejector plate and the fifth ejector plate, and the push tubes extend to the inner cavity of the rear mold insert.

[0013] Preferably, the fourth ejector plate and the fifth ejector plate are slidably sleeved on the outer wall of the connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: After the injection molding is completed, the front mold and the first push plate are not opened under the action of the mold locking buckle, and the first oil cylinder pushes the second push plate. Due to the action of the guide rod, the second push plate is separated from the first push plate. The product is then separated from the rear mold insert, leaving deformation space for the next step of forced removal of the undercut. The locking buckle is unlocked, and the mold is continued to be opened under the action of the mold opening power of the injection molding machine, so that the front mold is separated from the first push plate. At the same time, the simple cylinder of the front mold pushes the first ejector plate to slide, and the mushroom ejector fixed on the first ejector plate pushes the product out of the front mold core toward the rear mold. The slider pops open under the elastic force of the spring, so that the slider is separated from the product undercut, and the product is separated from the front mold core. The lower side of the product is separated from the undercut insert under the clamping force of the rear mold, and the second oil cylinder is started. The output end of the second oil cylinder drives the second ejector plate and the third ejector plate to slide, so that the rear mold insert slides, so that the product leaves the rear mold insert, and the cylinder pushes the rack and the sliding assembly forward. The key at one end of the sliding assembly slides to the groove position on the wear-resistant plate. At the same time, the sliding assembly also stops because it hits the limit block, and the rotating shaft and turntable move to the bottom of the product cover to prepare for the next flip cover action. As the cylinder continues to push, because the sliding assembly can no longer be pushed forward, the rack pushes the gear and the rotating shaft fixing block coaxial with the gear to rotate together, and the rotating shaft brings the upper cover to complete the action of closing the lower cover, thereby completing the closing operation of the product, solving the problem that the injection mold in the prior art cannot tightly cover the cover of the workpiece with the workpiece body after injection molding the workpiece with a cover, and the staff needs to manually close the cover of the workpiece after demolding, which adds a process flow and increases the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional view of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 For the present invention Figure 1A is an enlarged view; Figure 4 It is a structural schematic diagram of the rotating shaft of the present invention; Figure 5 It is a schematic diagram of the structure of the rack of the present invention; Figure 6 It is a structural schematic diagram of the bottom plate and the panel of the present invention; Figure 7 It is a structural schematic diagram of the cylinder of the present invention; Figure 8 It is a structural schematic diagram of the first push plate of the present invention; Fig. 9 It is a schematic structural diagram of the mushroom mandrel of the present invention.

[0016] In the figure: 1, bottom plate; 2, panel; 3, runner plate; 4, front mold; 5, first push plate; 6, second push plate; 7, first oil cylinder; 8, rear mold insert; 9, rear mold core; 10, front mold core; 11, first ejector plate; 12, mushroom ejector rod; 13, spring; 14, slider; 15, guide rod; 16, second ejector plate; 17, third ejector plate; 18, second oil cylinder; 19, fourth ejector plate; 20, fifth ejector plate; 21, connecting rod; 22, connecting block; 23, third oil cylinder; 24, push tube; 25, locking buckle; 26, bracket; 27, cylinder; 28, rack; 29, rotating column; 30, gear; 31, turntable; 32, rotating shaft; 33, limit plate; 34, key; 35, wear block; 36, guide rail; 37, sliding assembly. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 9The present invention provides a technical solution: an injection mold with a flip cover structure, comprising a bottom plate 1 and a panel 2 installed on an injection molding machine, a flow channel plate 3 is arranged at the bottom end of the panel 2, a front mold 4 is arranged at the bottom end of the flow channel plate 3, a front mold core 10 is arranged at the bottom end of the front mold 4, a demoulding component is arranged in the inner cavity of the front mold core 10, a locking buckle 25 is arranged on the outer wall of the front mold 4, a first push plate 5 is arranged on the other side of the locking buckle 25, a rear mold core 9 is fixedly embedded in the top of the first push plate 5, a bracket 26 is arranged on one side of the outer wall of the first push plate 5, a cylinder 27 is fixedly embedded in the left side of the inner cavity of the bracket 26, a rack 28 is arranged at the output end of the cylinder 27, a sliding component 37 is slidably sleeved on the outside of the rack 28, a key 34 is arranged on the right side of the sliding component 37, a wear-resistant block 35 is arranged on the top of the first push plate 5, and a rear mold core 9 is fixedly embedded in the top of the first push plate 5. There is a limit plate 33, a guide rail 36 is provided at the top of the first push plate 5, and a sliding component 37 is embedded in the inner cavity of the guide rail 36. The inner cavity of the sliding component 37 is rotatably connected to the rotating column 29 through a bearing. The front end of the rotating column 29 extends to the front end of the sliding component 37 and is fixedly connected to the turntable 31. The turntable 31 is eccentrically provided with a rotating shaft 32, and the other end of the rotating shaft 32 extends to the other side of the top of the first push plate 5. The outer wall of the rotating column 29 is fixedly sleeved with a gear 30, and the gear 30 is located in the inner cavity of the sliding component 37. The cylinder 27 pushes the rack 28 and the sliding component 37 to move forward, and the key 34 at one end of the sliding component 37 slides to the groove position on the wear-resistant plate. At the same time, the sliding component 37 also stops because it hits the limit block, and the rotating shaft 32 and the turntable 31 move to the bottom of the product cover to prepare for the next flip cover action. As the cylinder 27 continues to push, because the sliding assembly 37 can no longer be pushed forward, the rack 28 pushes the gear 30 and the rotating shaft 32 fixed block coaxial with the gear 30 to rotate together, and the rotating shaft 32 brings the upper cover to complete the action of closing the lower cover, thereby completing the closing operation of the product, solving the problem that the injection mold in the prior art cannot tightly cover the cover of the workpiece with the workpiece body after injection molding the workpiece with a cover, and the staff needs to manually close the cover of the workpiece after demolding, which adds a process flow and increases the production cost.

[0019] In this embodiment, the rack 28 is meshed with the gear 30 .

[0020] In this embodiment, a second oil cylinder 18 is provided at the top of the base plate 1, and the output end of the second oil cylinder 18 is fixedly sleeved with the second ejector plate 16 and the third ejector plate 17. A connecting rod 21 is fixedly connected to one side of the top of the second ejector plate 16, and a connecting block 22 is fixedly connected to the top of the connecting rod 21. The connecting block 22 is embedded in the first push plate 5. When the second oil cylinder 18 is started, the output end of the second oil cylinder 18 drives the second ejector plate 16 and the third ejector plate 17 to slide, thereby causing the rear mold insert to slide, so that the product leaves the rear mold insert.

[0021] In this embodiment, a first oil cylinder 7 is provided on the first push plate 5, and a second push plate 6 is connected to the other side of the first oil cylinder 7. A rear mold insert 8 is fixedly inserted into the inner cavity of the second push plate 6. The first oil cylinder 7 pushes the second push plate 6 away, and due to the action of the guide rod 15, the second push plate 6 is separated from the first push plate 5.

[0022] In this embodiment, the demolding assembly includes a first ejector plate 11, a simple cylinder, a mushroom ejector rod 12, a spring 13 and a slider 14. The simple cylinder is arranged at the top of the inner cavity of the front mold 4, the first ejector plate 11 is arranged at the output end of the simple cylinder, the mushroom ejector rod 12 is arranged at the output end of the simple cylinder, the mushroom ejector rod 12 passes through the front mold core 10 and extends to the bottom end of the front mold core 10, the spring 13 is fixedly embedded in the inner cavity of the front mold core 10, the slider 14 is fixedly connected to one end of the spring 13, and the other end of the spring 13 is fixedly connected to one side of the inner wall of the front mold core 10. The simple cylinder of the front mold 4 pushes the first ejector plate 11 to slide, and the mushroom ejector rod 12 fixed on the first ejector plate 11 ejects the product from the front mold core 10 toward the rear mold direction. The slider 14 pops open under the elastic force of the spring 13, so that the slider 14 is detached from the product buckle, and the product is detached from the front mold core 10.

[0023] In this embodiment, the bottom end of the mushroom push rod 12 is matched with the top end of the inner cavity of the front mold core 10, and the outer wall of the slider 14 is matched with the inner wall of the front mold core 10, which can prevent the mushroom push rod 12 or the slider 14 from protruding or sinking and affecting the injection molding quality of the product.

[0024] In this embodiment, a guide rod 15 is provided at the bottom end of the flow channel plate 3, and the guide rod 15 can be slidably inserted into the front mold 4, the first push plate 5 and the second push plate 6 in turn. Through the setting of the guide rod 15, the first push plate 5 and the second push plate 6 can always move along a straight line during the movement.

[0025] In this embodiment, rear mold inserting pins are fixedly connected to the second ejector plate 16 and the third ejector plate 17. The rear mold inserting pins are driven to slide up and down by the second ejector plate 16 and the third ejector pins, thereby separating the rear mold inserting pins from the product.

[0026] In this embodiment, a third oil cylinder 23 is provided at the top of the base plate 1, and a fourth ejector plate 19 and a fifth ejector plate 20 are provided at the output end of the third oil cylinder 23. A push tube 24 is fixedly connected to the fourth ejector plate 19 and the fifth ejector plate 20, and the push tube 24 extends to the inner cavity of the rear mold insert 8. When the third oil cylinder 23 is started, the third oil cylinder 23 can drive the fourth ejector plate 19, the fifth ejector plate 20 and the push tube 24 to slide up and down.

[0027] In this embodiment, the fourth ejector plate 19 and the fifth ejector plate 20 are slidably sleeved on the outer wall of the connecting rod 21, so that when the connecting rod 21 slides, the fourth ejector plate 19 and the fifth ejector plate 20 are in a stationary state without affecting each other.

[0028] The use method and advantages of the present invention: When in use, the working process is as follows: After the injection molding is completed, the front mold 4 and the first push plate 5 are not opened first under the action of the mold locking buckle 25, and the first oil cylinder 7 pushes the second push plate 6. Due to the action of the guide rod 15, the second push plate 6 is separated from the first push plate 5. Then the product leaves the rear mold insert 8, leaving deformation space for the next step of forced removal of the undercut, the mold locking buckle 25 is unlocked, and the mold is continued to be opened under the action of the mold opening power of the injection molding machine, so that the front mold 4 is separated from the first push plate 5. At the same time, the simple cylinder of the front mold 4 pushes the first ejector plate 11 to slide, and the mushroom ejector 12 fixed on the first ejector plate 11 ejects the product from the front mold core 10 in the direction of the rear mold. The slider 14 is bounced open under the elastic force of the spring 13, so that the slider 14 is separated from the undercut of the product, and the product is separated from the front mold core 10. The lower side of the product is in the rear mold The undercut insert is separated from the undercut insert under the action of the clamping force, and the second oil cylinder 18 is started. The output end of the second oil cylinder 18 drives the second ejector plate 16 and the third ejector plate 17 to slide, thereby making the rear mold insert slide, so that the product leaves the rear mold insert, and the cylinder 27 pushes the rack 28 and the sliding assembly 37 to move forward. The key 34 at one end of the sliding assembly 37 slides to the groove position on the wear-resistant plate. At the same time, the sliding assembly 37 also stops because it hits the limit block, and the rotating shaft 32 and the turntable 31 move to the bottom of the upper cover of the product to prepare for the next flip cover action. As the cylinder 27 continues to push, because the sliding assembly 37 can no longer be pushed forward, the rack 28 pushes the gear 30 and the rotating shaft 32 fixed block coaxial with the gear 30 to rotate together, and the rotating shaft 32 brings the upper cover to complete the action of closing the lower cover, thereby completing the closing operation of the product, solving the problem that the injection mold in the prior art cannot tightly cover the cover of the workpiece with the workpiece body after injection molding the workpiece with a cover, and the staff needs to manually close the cover of the workpiece after demolding, which adds a process flow and increases the production cost.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An injection mold with a flip cover structure, comprising a base plate (1) and a panel (2) mounted on an injection molding machine, characterized in that: A flow channel plate (3) is arranged at the bottom end of the panel (2), a front mold (4) is arranged at the bottom end of the flow channel plate (3), a front mold core (10) is arranged at the bottom end of the front mold (4), a demoulding assembly is arranged in the inner cavity of the front mold core (10), a locking buckle (25) is arranged on the outer wall of the front mold (4), a first push plate (5) is arranged on the other side of the locking buckle (25), a rear mold core (9) is fixedly embedded in the top end of the first push plate (5), a bracket (26) is arranged on one side of the outer wall of the first push plate (5), a cylinder (27) is fixedly embedded in the left side of the inner cavity of the bracket (26), a rack (28) is arranged at the output end of the cylinder (27), a sliding assembly (37) is slidably sleeved on the outside of the rack (28), and a sliding assembly (37) is arranged on the right side of the sliding assembly (37). A key (34) is provided, a wear-resistant block (35) is provided at the top of the first push plate (5), a limit plate (33) is provided at the top of the first push plate (5), a guide rail (36) is provided at the top of the first push plate (5), the sliding component (37) is embedded in the inner cavity of the guide rail (36), the inner cavity of the sliding component (37) is rotatably connected to a rotating column (29) through a bearing, the front end of the rotating column (29) extends to the front end of the sliding component (37) and is fixedly connected to a turntable (31), a rotating shaft (32) is eccentrically provided on the turntable (31), the other end of the rotating shaft (32) extends to the other side of the top of the first push plate (5), the outer wall of the rotating column (29) is fixedly sleeved with a gear (30), and the gear (30) is located in the inner cavity of the sliding component (37).

2. The injection mold with a flip cover structure according to claim 1, characterized in that: The rack (28) is meshed with the gear (30).

3. The injection mold with a flip cover structure according to claim 1, characterized in that: A second oil cylinder (18) is provided at the top end of the base plate (1), a second ejector plate (16) and a third ejector plate (17) are fixedly sleeved at the output end of the second oil cylinder (18), a connecting rod (21) is fixedly connected to one side of the top end of the second ejector plate (16), a connecting block (22) is fixedly connected to the top end of the connecting rod (21), and the connecting block (22) is embedded in the first push plate (5).

4. The injection mold with a flip cover structure according to claim 1, characterized in that: A first oil cylinder (7) is arranged on the first push plate (5), the other side of the first oil cylinder (7) is connected to a second push plate (6), and a rear mold insert (8) is fixedly inserted into the inner cavity of the second push plate (6).

5. The injection mold with a flip cover structure according to claim 1, characterized in that: The demoulding assembly comprises a first ejector plate (11), a simple air cylinder, a mushroom ejector rod (12), a spring (13) and a slider (14); the simple air cylinder is arranged at the top end of the inner cavity of the front mold (4); the first ejector plate (11) is arranged at the output end of the simple air cylinder; the mushroom ejector rod (12) is arranged at the output end of the simple air cylinder; the mushroom ejector rod (12) penetrates the front mold core (10) and extends to the bottom end of the front mold core (10); the spring (13) is fixedly embedded in the inner cavity of the front mold core (10); the slider (14) is fixedly connected to one end of the spring (13); and the other end of the spring (13) is fixedly connected to one side of the inner wall of the front mold core (10).

6. The injection mold with flip cover structure according to claim 5, characterized in that: The bottom end of the mushroom push rod (12) fits in with the top end of the inner cavity of the front mold core (10), and the outer wall of the sliding block (14) fits in with the inner wall of the front mold core (10).

7. The injection mold with a flip cover structure according to claim 1, characterized in that: A guide rod (15) is provided at the bottom end of the flow channel plate (3), and the guide rod (15) is slidably plugged into the front mold (4), the first push plate (5) and the second push plate (6) in sequence.

8. The injection mold with a flip cover structure according to claim 3, characterized in that: The second ejector plate (16) and the third ejector plate (17) are fixedly plugged with rear mold inserts.

9. The injection mold with a flip cover structure according to claim 1, characterized in that: A third oil cylinder (23) is arranged at the top end of the base plate (1), a fourth ejector plate (19) and a fifth ejector plate (20) are arranged at the output end of the third oil cylinder (23), a push tube (24) is fixedly plugged onto the fourth ejector plate (19) and the fifth ejector plate (20), and the push tube (24) extends to the inner cavity of the rear mold insert (8).

10. The injection mold with a flip cover structure according to claim 9, characterized in that: The fourth ejector plate (19) and the fifth ejector plate (20) are slidably sleeved on the outer wall of the connecting rod (21).

Images