Punching device in strip injection mold

Abstract

The utility model discloses a punching device in a strip injection mold. The punching device comprises an upper mold, a suction device, a punching device, a mold core cavity and a fixing frame, a guide rail is arranged on the fixing frame and is in sliding connection with the suction device; a suction pipeline is arranged in a pressing plate of the suction device, and one end of the suction pipeline is connected with a suction connector. The suction device is connected with the first oil cylinder through a first oil cylinder telescopic rod and is driven by the first oil cylinder to move along the guide rail. The mold core cavity is provided with a cavity matched with the bottom of a part to be subjected to injection molding, and the mold core cavity is arranged below the fixing frame; a punch of the punching device is positioned below the punching strip of the mold core cavity, and is driven by a third oil cylinder to drive a punch on a moving rod of the third oil cylinder to move upwards so as to complete the punching of the strip; and the punched waste is discharged through the suction pipeline, so that the labor cost and the time cost for loading the metal terminal are reduced, the loading of the metal terminal at one time is completed, the production efficiency is improved, the downtime is shortened, and the product defects caused by high-temperature carbonization are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of injection molding processing, and in particular relates to a punching device in an injection mold with material. Background Art

[0002] In the prior art, when producing injection molded products with metal terminals, the metal terminals are usually loaded into the mold cavity manually or by an automatic robot. Each product may contain multiple terminals. Assuming that there are six metal terminals and the mold has four cavities, 4x6=24 terminals need to be loaded each time the mold is opened. Therefore, how to quickly and accurately realize the loading process is the biggest challenge faced by this type of mold molding.

[0003] The utility model needs to solve the problems of long loading time, long production cycle and low productivity in the prior art, and at the same time needs to design an injection mold punching device to shorten the loading time, reduce downtime and molding cycle, so as to improve production efficiency, thereby reducing product defects caused by high-temperature carbonization of particles in the injection molding machine nozzle. In addition, it can also save the cost of developing a special stamping separation mold, effectively solve the above-mentioned problem of loading terminals, and improve the efficiency of the overall production process. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a punching device for injection molding with material. In order to reduce the manpower and time cost of loading metal terminals, the utility model uses the punching device for injection molding with material to realize automatic punching of the material, complete the loading of the one-time metal terminal, improve production efficiency, reduce downtime, reduce product defects caused by high temperature carbonization of particles in the nozzle of the injection molding machine, and save development costs. The technical solution adopted by the utility model is as follows.

[0005] On the one hand, the utility model provides a punching device for injection molding with material, comprising an upper mold, a suction device, a punching device, a mold core cavity and a fixing frame;

[0006] A guide rail is provided on the fixed frame, and the suction device is slidably connected to the guide rail;

[0007] The suction device comprises a pressing plate, a suction pipe is arranged in the pressing plate, one end of the suction pipe is connected to a suction joint, and the suction joint is connected to a pressure pump suction device; the other end of the suction pipe is fixed at a specific position;

[0008] The suction device is connected to the first oil cylinder through the first oil cylinder telescopic rod, and the suction device moves along the guide rail under the drive of the first oil cylinder;

[0009] The mold core cavity is provided with a chamber that fits the bottom of the part to be injected and is located below the fixing frame;

[0010] The punch of the punching device is located below the punching strip of the to-be-injected part in the mold core cavity, and is driven by the third oil cylinder to drive the punch on the moving rod of the third oil cylinder to move upward to complete the punching of the strip;

[0011] An injection molding interface is arranged on the top of the upper mold, and the upper mold is arranged above the suction device.

[0012] Optionally, limit blocks are respectively provided at both ends of the guide rail on the fixed frame, the bottom of the limit block is fixedly connected to the fixed frame, the limit switch is arranged in the limit block, and the limit switch is provided with a contact facing one end of the guide rail, and the contact passes through the limit block; the limit block and the limit switch are used to limit the initial default position of the suction device and the punching position at which the movement is terminated, ensuring that the farthest position of the suction device when it moves along the guide rail is the punching position.

[0013] Optionally, the suction device includes two pressure plates, an upper pressure plate and a lower pressure plate, the suction pipe is located at the upper part of the lower pressure plate, and the lower part of the upper pressure plate is fixedly connected to the upper part of the lower pressure plate by screws to press and lock the suction pipe.

[0014] Optionally, the punching and cutting device for the injection molded film also includes a second cylinder, a second cylinder top rod passes through the top of the second cylinder, a second cylinder top block is provided on the upper end of the second cylinder top rod, and the second cylinder top block is fixedly connected to the fixed frame; one side of the second cylinder is connected to the second cylinder fixing plate, and the second cylinder fixing plate is fixedly connected to one side of the punching and cutting device for the injection molded film by screws; the second cylinder top rod is used to lift the fixed frame to prevent the suction device from colliding with other structures in the device during movement along the guide rail.

[0015] Optionally, the punching device in the injection mold also includes an anti-backflow cylinder, an anti-backflow core is provided in the anti-backflow cylinder, an anti-backflow cylinder fixing plate is provided on the top of the anti-backflow cylinder, and the anti-backflow cylinder fixing plate is connected to the second oil cylinder fixing plate; the anti-backflow cylinder is used to prevent the pressure plate from shifting downward due to the large punching force when punching the material.

[0016] Optionally, the mold core cavity includes a mold core cavity fixing plate, a mold core and a junction box. A junction box for a glue inlet hot runner is provided on one side of the mold core cavity fixing plate. The mold core is arranged on the mold core cavity fixing plate. A cavity suitable for a part to be injection molded is arranged inside the mold core. The mold core is designed to have one cavity, two cavities, three cavities or four cavities according to needs. The mold core cavity is used to load an injection mold, and multiple injection molded parts can be punched and injected at the same time to improve production efficiency.

[0017] Optionally, the first oil cylinder is located above one of the second oil cylinders, and the first oil cylinder is fixedly connected to the second oil cylinder fixing plate through the first oil cylinder fixing plate; the first oil cylinder drives the first oil cylinder telescopic rod to extend and retract, pulling the suction device to move, so as to provide power for the suction device to move along the guide rail to the punching position.

[0018] Optionally, the punching device in the injection mold also includes a positioning block, the top of the positioning block is connected to the lower part of the pressure plate, the upper end of the fourth cylinder is provided with a fourth cylinder moving rod, and the bottom of the positioning block is connected to the fourth cylinder moving rod; when punching the material, the cooperation between the fourth cylinder and the positioning block prevents the problem of upward displacement of the pressure plate due to excessive punching force.

[0019] Optionally, the specific position refers to the position where the suction device moves along the guide rail to the metal terminal of the injection molded part to be punched under the drive of the first oil cylinder.

[0020] Optionally, a third cylinder moving rod is provided at the upper end of the third cylinder, the top of the third cylinder moving rod is connected to the punch fixing plate by bolts, a punch is provided on the punch fixing plate, and the position of the metal terminal strip to be punched is located above the punch.

[0021] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model discloses a punching device for injection molding with material, which automatically punches the material of the metal terminal in the injection mold under the action of the oil cylinder and the suction device, and discharges the punched waste using the suction pipe in the punching device for injection molding with material, so as to reduce the manpower and time cost of loading the metal terminal, realize automatic punching of the material, complete the loading of the one-time metal terminal, improve production efficiency, reduce downtime, reduce the product defects caused by high-temperature carbonization of particles in the nozzle of the injection molding machine, and save development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an overall structural diagram of a punching device for a strip injection mold provided by an embodiment of the utility model;

[0023] Figure 2 It is a linear structural diagram of the punching device in the injection mold with material provided by the embodiment of the utility model;

[0024] Figure 3 This is a main structural front view of the punching device for the strip injection mold provided by the embodiment of the utility model;

[0025] Figure 4 It is a top view of the main structure of the punching device in the injection mold provided by the embodiment of the utility model;

[0026] Figure 5 This is a left view of the main structure of the punching device for the strip injection mold provided by the embodiment of the utility model;

[0027] Figure 6 It is a three-dimensional stereogram of the main structure of the punching device for the strip injection mold provided by the embodiment of the utility model;

[0028] Figure 7It is a top view of the main structure of the punching device in the injection mold provided by the embodiment of the utility model;

[0029] Figure 8 It is a top view of the structure of the mold core cavity provided by the embodiment of the utility model;

[0030] 1. First oil cylinder; 2. Second oil cylinder; 3. Third oil cylinder; 4. Anti-return cylinder; 5. Pressing plate; 6. Suction joint; 7. Suction pipe; 8. Punch; 9. Third oil cylinder moving rod; 10. Punch fixing plate; 11. Punch pressure block; 12. Limit block; 13. Limit switch; 14. Fourth oil cylinder; 15. Positioning block; 16. Second oil cylinder fixing plate; 17. Fixing frame; 18. Guide rail. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present application.

[0032] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third" and the like are only used for description and distinction, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Example 1

[0033] This embodiment introduces a punching device for injection molding with material, including an upper mold, a suction device, a punching device, a mold core cavity and a fixing frame 17;

[0034] The fixing frame 17 is provided with a guide rail 18, and the suction device is slidably connected to the guide rail 18;

[0035] The suction device comprises a pressing plate 5, wherein a suction pipe 7 is arranged inside the pressing plate 5, wherein one end of the suction pipe 7 is connected to a suction joint 6, and the suction joint 6 is connected to a pressure pump suction device; the other end of the suction pipe 7 is fixed at a specific position;

[0036] The suction device is connected to the first oil cylinder 1 through the first oil cylinder telescopic rod, and the suction device moves along the guide rail 18 under the drive of the first oil cylinder 1;

[0037] The mold core cavity is provided with a chamber that fits the bottom of the part to be injected, and is arranged below the fixing frame 17;

[0038] The punch 8 of the punching device is located below the punching strip of the molded part to be injected in the mold core cavity, and the punch 8 on the third cylinder moving rod 9 is driven by the third cylinder 3 to move upward to complete the punching of the strip.

[0039] An injection molding interface is provided on the top of the upper mold, and the upper mold is arranged above the suction device.

[0040] In this embodiment, under the power of the first oil cylinder, the suction device is pulled along the guide rail on the fixed frame to the position to be punched, and the punching device punches the strip of the metal terminal. After the waste material after punching is sucked in through the suction pipe under the action of the pressure pump suction device, the suction device is restored to the initial position, the upper mold is covered on the mold core cavity, and the injection molding material is injected using the injection molding interface to achieve the pouring of the injection molded part. The mold core cavity in this embodiment can accommodate multiple products to be injected at the same time, and punching, suction and injection molding are performed at the same time. It is only necessary to load the metal terminal containing the strip into the injection molded part at one time, and use the punching device in this embodiment for punching, so as to avoid the problem of short circuit of the injection molded part, reduce the manpower and time cost of loading the metal terminal, improve production efficiency, reduce downtime, reduce the product defects caused by high temperature carbonization of particles in the injection molding machine gun nozzle, and save development costs. Example 2

[0041] Based on Example 1, this example introduces a specific implementation process of a punching device in a strip injection mold.

[0042] The punching and cutting device in the injection mold comprises an upper mold, a suction device, a punching and cutting device, a mold core cavity, a fixing frame 17 and a lower mold.

[0043] A guide rail 18 is provided on the fixed frame 17, and the suction device is slidably connected to the guide rail 18; limit blocks 12 are also provided at both ends of the guide rail 18 on the fixed frame 17, and the bottom of the limit block 12 is fixedly connected to the fixed frame 17. A limit switch 13 is arranged in the limit block 12, and the limit switch 13 is provided with a contact toward one end of the guide rail 18, and the contact passes through the limit block 12. The limit block 12 and the limit switch 13 are used to limit the initial default position of the suction device and the punching position at which the movement is terminated, to ensure that the farthest position of the final movement of the suction device when moving along the guide rail 18 is the punching position.

[0044] The suction device includes two pressing plates 5, namely an upper pressing plate and a lower pressing plate. The suction pipe 7 is located at the upper part of the lower pressing plate, and the lower part of the upper pressing plate is fixedly connected to the upper part of the lower pressing plate by screws, so that the suction pipe 7 is pressed and locked; one end of the suction pipe 7 is connected to a suction connector 6, and the suction connector 6 is connected to a pressure pump suction device, and the pressure pump suction device is used to provide negative pressure power; the other end of the suction pipe 7 is fixed at a specific position, and the specific position refers to when the suction device moves along the guide rail to the position to be punched of the metal terminal of the injection molded part under the drive of the first oil cylinder, the suction device is used to suck out the waste after the metal terminal is punched.

[0045] A second cylinder 2 is also arranged on both sides of the punching and cutting device for injection molding film with material, and the second cylinder top rod passes through the top of the second cylinder 2. A second cylinder top block is arranged on the upper end of the second cylinder top rod, and the second cylinder top block is fixedly connected to the fixed frame 17; one side of the second cylinder 2 is connected to the second cylinder fixing plate 16, and the second cylinder fixing plate 16 is fixedly connected to one side of the punching and cutting device for injection molding film with material by screws; the second cylinder top rod is used to lift the fixed frame to prevent the suction device from colliding with other structures in the device during the movement along the guide rail 18.

[0046] The first oil cylinder 1 is located above the second oil cylinder 2 on the right side. The first oil cylinder 1 is fixedly connected to the second oil cylinder fixing plate 16 via a first oil cylinder fixing plate. The suction device is connected to the first oil cylinder (1) via a first oil cylinder telescopic rod.

[0047] The first oil cylinder 1 drives the first oil cylinder telescopic rod to extend and retract, pulling the suction device to move along the guide rail 18. The first oil cylinder 1 is used to provide power for the suction device to move along the guide rail 18 to the punching position.

[0048] The punching device in the strip injection mold also includes an anti-backflow cylinder 4, which is arranged on both sides of the second oil cylinder 2, and an anti-backflow core is arranged in the anti-backflow cylinder 4, and an anti-backflow cylinder fixing plate is arranged on the top of the anti-backflow cylinder 4, and the anti-backflow cylinder fixing plate is connected to the second oil cylinder fixing plate 16; the anti-backflow cylinder is used to prevent the pressure plate from shifting downward due to the large punching force when punching the strip. When the suction device moves along the guide rail under the action of the first oil cylinder 1, the anti-backflow cylinder 4 is started, and the anti-backflow core extends between the second oil cylinder telescopic rod and the fixed frame 17 to prevent the pressure plate from shifting downward due to the large punching force; when the suction device returns to the initial position, the anti-backflow cylinder 4 receives a signal, and the anti-backflow core contracts, so that the fixed frame 17 returns to the initial position.

[0049] The mold core cavity structure is as follows: Figure 7As shown, the mold core cavity is arranged below the fixing frame 17, and the mold core cavity includes a mold core cavity fixing plate, a mold core and a junction box. One side of the mold core cavity fixing plate is provided with the junction box of the hot runner for glue inlet, and the mold core is arranged on the mold core cavity fixing plate. The mold core is provided with a cavity adapted to the part to be injected, and the mold core is designed as one hole, two holes, three holes, or four holes as required. The mold core cavity is used to load the injection mold, and can perform material punching and injection molding on multiple injection molded parts at the same time. Among them, this embodiment has four holes, that is, four parts to be injected can be punched, sucked, and injected at the same time, which improves the injection molding efficiency of the product and reduces the manpower and material costs.

[0050] The punching device includes a punch 8, a third cylinder moving rod 9, a third cylinder 3, a punch fixing plate 10 and a punch pressing block 11. The third cylinder moving rod 9 is provided at the upper end of the third cylinder 3. The top of the third cylinder moving rod 9 is connected to the punch fixing plate 10 by bolts. The punch fixing plate 10 is provided with the punch 8, and the position of the metal terminal strip to be punched is located above the punch 8. When the punching device starts the punching mode, the punch 8 on the third cylinder moving rod 9 is driven by the third cylinder 3 to move upward to complete the punching of the metal terminal strip.

[0051] The punching device in the injection mold also includes a T-shaped positioning block 15, the top of which is connected to the lower part of the pressure plate 5, and the upper end of the fourth oil cylinder 14 is provided with a fourth oil cylinder moving rod, and the lower part of the T-shaped positioning block 15 is connected to the fourth oil cylinder moving rod; when punching the strip, the cooperation between the fourth oil cylinder and the positioning block prevents the problem of upward displacement of the pressure plate due to excessive punching force.

[0052] An injection molding interface is provided on the top of the upper mold, and the upper mold is arranged above the suction device.

[0053] The lower die is used to fix and protect the punching device, the fourth oil cylinder 14 and related components.

[0054] The working process of the punching and cutting device in the strip injection mold is as follows:

[0055] First, the upper mold in the punching device of the strip injection mold is opened, and the metal terminal containing the strip is placed in the cavity of the mold core cavity, and the suction device is located at the initial position on the left side of the punching device of the strip injection mold;

[0056] The second oil cylinder push rod lifts the fixing frame 17 and the suction device and other related components installed on the fixing frame 17 under the action of the second oil cylinder 2 to prevent the suction device from colliding with other components when moving along the guide rail 18; the first oil cylinder telescopic rod pulls the suction device to move along the guide rail 18 under the drive of the first oil cylinder 1; when the suction device moves along the guide rail under the action of the first oil cylinder 1, the anti-retraction cylinder 4 is started, and the anti-retraction core extends between the second oil cylinder telescopic rod and the fixing frame 17 to prevent the pressure plate from shifting downward due to the large punching force;

[0057] When one side of the suction device collides with the limit switch 13, the telescopic rod of the first oil cylinder stops moving the suction device. At this time, the suction device has moved to the position where the metal terminal of the injection molded part is to be punched.

[0058] The punching mode of the punching device in the injection mold with material is started, and the third oil cylinder 3 drives the third oil cylinder moving rod 9 to move upward, and the third oil cylinder moving rod 9 is connected to the punch fixing plate 10, thereby driving the punch 8 to cut the material of the metal terminal of the injection mold to be injected; under the action of the pressure pump suction device, the punching waste is sucked into the suction pipe of the suction device, and discharged to the outside of the punching device in the injection mold with material through the suction pipe; during the punching process and the suction process, the fourth oil cylinder 14 drives the fourth oil cylinder moving rod to drive the positioning block 15 to maintain a certain position; with the cooperation of the fourth oil cylinder and the positioning block, the problem of upward displacement of the pressing plate 5 caused by excessive punching force is prevented.

[0059] After the punching and suction process is completed, the suction device returns to the initial position along the guide rail 18 under the action of the first cylinder telescopic rod. When the suction device returns to the initial position, the anti-retreat cylinder 4 receives a signal, the anti-retreat core contracts, and the fixed frame 17 returns to the initial position.

[0060] At this time, the upper mold is closed on the upper part of the suction device, and the injection material is poured into the injection interface in the upper mold and injected into the part to be injected in the mold core cavity through the injection pipe to complete the injection process.

[0061] Open the mold and take out the injection molded parts.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A punching device for strip injection mold, characterized in that: It includes an upper mold, a suction device, a punching device, a mold core cavity and a fixing frame (17); The fixing frame (17) is provided with a guide rail (18), and the suction device is slidably connected to the guide rail (18); The suction device comprises a pressing plate (5), a suction pipe (7) is arranged inside the pressing plate (5), one end of the suction pipe (7) is connected to a suction joint (6), and the suction joint (6) is connected to a pressure pump suction device; the other end of the suction pipe (7) is fixed at a specific position; The suction device is connected to the first oil cylinder (1) via a first oil cylinder telescopic rod, and the suction device moves along the guide rail (18) under the drive of the first oil cylinder (1); The mold core cavity is provided with a chamber that fits the bottom of the part to be injected, and is arranged below the fixing frame (17); The punch (8) of the punching device is located below the punching strip of the part to be injected in the mold core cavity, and is driven by the third oil cylinder (3) to drive the punch (8) on the third oil cylinder moving rod (9) to move upward to complete the punching of the strip; An injection molding interface is provided on the top of the upper mold, and the upper mold is arranged above the suction device.

2. The punching device for strip injection mold according to claim 1, characterized in that: Limit blocks (12) are also provided at both ends of the guide rail (18) on the fixing frame (17), the bottom of the limit block (12) is fixedly connected to the fixing frame (17), a limit switch (13) is provided in the limit block (12), and a contact is provided at one end of the limit switch (13) facing the guide rail (18), and the contact passes through the limit block (12).

3. The punching device in the strip injection mold according to claim 1, characterized in that: The suction device comprises two pressing plates (5), namely an upper pressing plate and a lower pressing plate. The suction pipe (7) is located at the upper part of the lower pressing plate. The lower part of the upper pressing plate is fixedly connected to the upper part of the lower pressing plate by screws, thereby pressing and locking the suction pipe (7).

4. The punching device in the strip injection mold according to claim 1, characterized in that: The strip injection molded film punching and cutting device further comprises a second oil cylinder (2), a second oil cylinder top rod passing through the top of the second oil cylinder (2), a second oil cylinder top block being provided at the upper end of the second oil cylinder top rod, and the second oil cylinder top block being fixedly connected to the fixing frame (17); one side of the second oil cylinder (2) is connected to a second oil cylinder fixing plate (16), and the second oil cylinder fixing plate (16) is fixedly connected to one side of the strip injection molded film punching and cutting device by means of screws.

5. The punching device in the strip injection mold according to claim 4, characterized in that: The punching device in the injection mold further comprises an anti-recoil cylinder (4), an anti-recoil core is arranged in the anti-recoil cylinder (4), an anti-recoil cylinder fixing plate is arranged on the top of the anti-recoil cylinder (4), and the anti-recoil cylinder fixing plate is connected to the second oil cylinder fixing plate (16).

6. The punching device in the strip injection mold according to claim 1, characterized in that: The mold core cavity includes a mold core cavity fixing plate, a mold core and a junction box. A junction box for a hot runner for glue inlet is provided on one side of the mold core cavity fixing plate. The mold core is arranged on the mold core cavity fixing plate. A cavity adapted to the part to be injected is arranged in the mold core. The mold core is designed to have one cavity, two cavities, three cavities or four cavities according to needs.

7. The punching device in the strip injection mold according to claim 4, characterized in that: The first oil cylinder (1) is located above one of the second oil cylinders (2), and the first oil cylinder (1) is fixedly connected to the second oil cylinder fixing plate (16) via a first oil cylinder fixing plate.

8. The punching device in the strip injection mold according to claim 1, characterized in that: It also includes a positioning block (15), the top of which is connected to the lower part of the pressing plate (5), a fourth oil cylinder movement rod is provided at the upper end of the fourth oil cylinder (14), and the bottom of the positioning block (15) is connected to the fourth oil cylinder movement rod.

9. The punching device in the strip injection mold according to claim 1, characterized in that: The specific position refers to the position where the suction device moves along the guide rail to the metal terminal of the injection molded part to be punched under the drive of the first oil cylinder.

10. The punching device in the strip injection mold according to claim 1, characterized in that: The third oil cylinder (3) is provided with the third oil cylinder moving rod (9) at the upper end, the top of the third oil cylinder moving rod (9) is connected to the punch fixing plate (10) by bolts, the punch fixing plate (10) is provided with the punch (8), and the position of the strip of the metal terminal to be punched is located above the punch (8).

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