A wire terminal punching die

Abstract

This utility model relates to the field of terminal block processing technology, specifically to a terminal block drilling mold, including a mold shell, mounting plates on both sides of the top of the mold shell, a mold groove on the top of the mold shell, and a through pipe at the bottom of the mold groove. A discharge pipe is located inside the mold shell below the mold groove, used to discharge waste material generated after drilling. This application fundamentally changes the traditional gravity-dependent passive material dropping mode by integrating an active waste removal system based on the Venturi principle inside the mold. This system uses compressed air generated by the stamping action as a power source, forming a strong negative pressure at the neck of the Venturi structure, actively adsorbing and accelerating the falling waste material. Combined with the downward-sloping airflow, this ensures that the waste material is quickly and thoroughly discharged from the mold. Simultaneously, it achieves self-sufficiency in energy, eliminating the need for an external air source, thus reducing energy consumption and operating costs.

Description

Technical Field

[0001] This utility model relates to the field of terminal block processing technology, specifically to a terminal block drilling mold. Background Technology

[0002] Terminal block punching dies are special stamping dies used to process terminal blocks. Their core function is to accurately punch out the required holes such as mounting holes and wiring holes on the terminal substrate. They are usually used in conjunction with stamping equipment to quickly form the holes, ensuring that the hole dimensions are accurate and consistent, and meeting the needs of subsequent assembly and circuit connection of the terminal blocks.

[0003] Utility model patent CN215143880U discloses a terminal block drilling mold, including a drilling body. A sliding groove is formed at the upper middle and front middle of the drilling body. A mold structure is detachably connected to the inner wall of the sliding groove. A support frame is fixedly connected to the upper rear of the drilling body. A support plate is fixedly connected to the upper middle of the support frame. A telescopic device is fixedly connected to the upper front of the support plate. The output end of the telescopic device passes through the support plate and is fixedly connected to the drilling structure, which is located above the mold structure. This utility model's terminal block drilling mold, by setting the mold structure and the drilling structure, increases the applicable range of terminal block drilling at different heights, while also increasing the range of hole diameters, increasing the stability of the terminal block during drilling, preventing displacement due to gravity impact during drilling, increasing the penetration of the terminal block, and improving the accuracy of terminal block drilling.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Existing punching dies typically have a through-hole inside the die. After the waste material falls from the hole in the die sleeve, it falls naturally by gravity, passing through a simple ramp or pipe, and finally falls into the waste bin below. This process is very passive and prone to jamming. Once blocked, the machine must be stopped for cleaning, which severely reduces production efficiency and may even damage the die. If the waste material is not discharged smoothly, it will be carried to the surface of the die cavity, causing indentations on the terminal surface during the next stamping, resulting in defective products. Therefore, improvements are needed. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a terminal punching mold, which can effectively solve the problem that the blanking hole is easily blocked in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a terminal block punching mold, including a mold shell and a cylinder disposed on one side of the mold shell. The top of the cylinder is provided with a sliding hole. Mounting plates are provided on both sides of the top of the mold shell. The top of the mold shell is provided with a mold groove, and a through pipe is provided at the bottom of the mold groove. A discharge pipe is provided inside the mold shell below the mold groove, and the discharge pipe is used to discharge the waste material generated after punching.

[0008] The discharge pipe includes a feed inlet, which is attached to the bottom of the mold cavity. A neck tube is fixedly connected to the bottom of the feed inlet, and the feed inlet gradually narrows towards the neck tube. A gradually expanding diffuser tube is fixedly connected to the bottom of the neck tube, and an atmospheric vent hole is opened on the surface of the feed inlet.

[0009] Furthermore, the venturi structure is formed by the contraction of the neck of the discharge pipe.

[0010] In the above implementation process, the discharge pipe and the through pipe are located on the same vertical line, and the bottom of the mold shell is provided with a discharge port that is located on the same vertical line as the discharge pipe.

[0011] Furthermore, ensure that the waste falls vertically and smoothly to avoid waste getting stuck or blocked during transmission.

[0012] In the above implementation process, downwardly inclined air tubes are fixedly connected to both sides of the neck tube, and the other ends of the two air tubes are merged into one pipe.

[0013] Furthermore, by introducing airflow to assist in waste discharge, the problem of waste not falling smoothly due to gravity can be solved.

[0014] In the above implementation process, the inner wall of the neck tube is provided with a nozzle that communicates with the trachea, wherein the nozzle is located on the inner wall at the upper end of the neck tube.

[0015] Furthermore, by introducing high-speed airflow into the neck tube, the airflow is ensured to efficiently push the waste material down, while negative pressure is generated in the feed inlet to suck in the waste material, thereby improving the waste collection effect.

[0016] In the above implementation process, a connecting frame is fixedly connected to one side of the mold shell, and a cylinder is fixedly connected to the lower part of the connecting frame. The lower part of the cylinder is provided with a vent hole, and the inner wall of the upper end of the cylinder is provided with a first air inlet, which is connected to a pipe that is combined with an air pipe.

[0017] Furthermore, a stable air source is provided for the air tube, realizing the integrated design of airflow supply and mold structure.

[0018] In the above implementation process, a connecting rod is slidably connected inside the sliding hole, wherein a connecting plate for connecting with the lifting device of the stamping equipment is fixedly connected to the top of the connecting rod, and a piston is fixedly connected to the bottom of the connecting rod.

[0019] Furthermore, the cylinder and the stamping equipment are linked, and the cylinder is driven by the movement of the equipment to generate airflow.

[0020] In the above implementation process, a first one-way valve is fixedly connected to the lower end surface of the cylinder, and a second air inlet is provided at the bottom of the cylinder. A channel pipe is fixedly connected between the second air inlet and the air pipe, and a second one-way valve is installed on both the channel pipe and the first air inlet.

[0021] Furthermore, ensure that the airflow is delivered unidirectionally to the air tube to avoid airflow backflow affecting the jet effect.

[0022] In the above implementation process, the piston has a vertical channel inside, and a horizontal channel is provided at the top of the vertical channel. A spring slider is slidably connected in the horizontal channel. The lower surface of the spring slider is inclined. A baffle is fixedly connected to one side of the spring slider. An air passage is also provided inside the piston on one side of the vertical channel, and the baffle moves at the opening of the air passage.

[0023] Furthermore, by controlling the airflow switching during the up-and-down movement of the cylinder, a continuous and stable air supply is ensured.

[0024] In the above implementation process, a vertical rod is fixedly connected to the inner bottom of the cylinder, wherein the top surface of the vertical rod is an inclined surface and is symmetrical to the inclined surface of the spring slider.

[0025] Furthermore, the baffles can be automatically switched through mechanical linkage, eliminating the need for manual control of the airflow direction.

[0026] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0027] I. This utility model fundamentally changes the traditional passive material dropping mode that relies on gravity by integrating an active waste removal system based on the Venturi principle inside the mold. The system uses the compressed air generated by the stamping action itself as a power source to form a strong negative pressure at the neck of the Venturi structure, which actively adsorbs and accelerates the falling waste. Combined with the downward-sloping airflow, it ensures that the waste is quickly and thoroughly discharged from the mold.

[0028] Second, this utility model achieves self-sufficiency in energy supply through the waste removal system, eliminating the need for an external gas source. This not only reduces energy consumption and operating costs but also simplifies the external configuration of the mold and improves the integration and operational reliability of the equipment. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the internal structure of the mold shell of this utility model;

[0032] Figure 3 This is a schematic diagram of the internal structure of the cylinder of this utility model;

[0033] Figure 4 This is a schematic diagram of the internal structure of the piston of this utility model;

[0034] Figure 5 This is a schematic diagram of the internal structure of the discharge pipe of this utility model.

[0035] Reference numerals: 1. Mold shell; 11. Mounting plate; 12. Mold groove; 13. Through pipe; 14. Discharge port; 2. Discharge pipe; 21. Inlet; 22. Neck pipe; 23. Diffuser pipe; 24. Nozzle; 25. Air pipe; 3. Cylinder; 31. Connecting frame; 32. Sliding hole; 33. First one-way valve; 34. First air inlet; 35. Channel pipe; 36. Second one-way valve; 37. Connecting rod; 38. Connecting plate; 39. Piston; 40. Vertical rod; 41. Vertical channel; 42. Spring slider; 43. Baffle; 44. Air passage. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] The present invention will be further described below with reference to the embodiments.

[0038] See attached document Figures 1-5This utility model provides a terminal block punching mold, including a mold shell 1. Mounting plates 11 are fixedly installed on both sides of the top of the mold shell 1. Bolt holes are provided on the mounting plates 11 for the entire mold to be stably installed on the working platform of the stamping machine. A mold groove 12 is provided in the center area of ​​the top of the mold shell 1. The shape and size of the mold groove 12 are specially customized for the terminal block workpiece to be punched, for precise positioning and fixing of the workpiece. A through pipe 13 is provided in the inner bottom of the mold groove 12. During punching, the punch will pass through this hole, and the generated round waste material will fall through it.

[0039] To automate waste material handling, a discharge pipe 2 is integrated inside the mold shell 1, directly below the mold groove 12. This discharge pipe 2 includes an inlet 21, which fits tightly against the bottom of the mold groove 12 and is aligned with a through pipe 13. The surface of the inlet 21 has an air vent connecting to the atmosphere. The through pipe 13 extends downwards, exceeding the air vent, to ensure waste material falls in without deviation. A neck pipe 22 is fixedly connected to the bottom of the inlet 21, its structure designed to... The feed inlet 21 gradually narrows downward to form a neck, and the bottom of the neck tube 22 is fixedly connected to a diffuser tube 23 that gradually expands outward. This combination of the feed inlet 21, the neck tube 22 and the diffuser tube 23 forms a Venturi tube structure. The discharge pipe 2, the through pipe 13 above and the discharge port 14 opened at the bottom of the mold shell 1 are strictly on the same vertical line. This creates an ideal unobstructed channel for the free fall of waste material, fundamentally avoiding the risk of waste material being stuck or blocked due to collision in the transmission path.

[0040] To enhance discharge capacity, an active airflow assist is provided. Downward-sloping air pipes 25 are fixedly connected to both sides of the neck pipe 22. These two air pipes 25 merge into a main pipe at the bottom. On the inner wall of the upper end of the neck pipe 22, there is a nozzle 24 communicating with the air pipes 25. When the high-speed airflow is injected into the narrow throat of the neck pipe 22 from the nozzle 24, a high-speed low-pressure zone is formed inside. This generates a strong suction force, actively sucking in the waste through the feed inlet 21. On the other hand, the airflow itself acts as an invisible pusher, efficiently propelling the waste through the neck pipe 22 and into the diffuser 23, and finally discharging it from the discharge port 14. This completely solves the problem that the waste may not fall smoothly if it relies solely on its own gravity.

[0041] The air source of this system is provided by a pneumatic mechanism linked to the stamping equipment. A connecting frame 31 is fixedly connected to one side of the mold shell 1. A cylinder 3 is fixedly installed below the connecting frame 31. The upper inner wall of the cylinder 3 has a first air inlet 34. This inlet is connected to the main pipeline after the air pipe 25 is merged through a pipe, becoming a stable outlet for airflow. A sliding hole 32 is opened at the top of the cylinder 3. A connecting rod 37 is slidably connected in the sliding hole 32. A connecting plate 38 is fixed at the top of the connecting rod 37 for connecting to the existing lifting device of the stamping equipment. The lifting device is not shown in the figure. A piston 39 that slides in the cylinder 3 is fixedly connected at its bottom. The up-and-down reciprocating motion of the stamping equipment is directly converted into the reciprocating motion of the piston 39 in the cylinder 3.

[0042] To ensure a stable airflow supply to the air pipe 25, a first one-way valve 33 is fixedly connected to the lower end surface of the cylinder 3, allowing external air to enter the cylinder 3 while preventing internal gas from escaping. A second air inlet is also provided at the bottom of the cylinder 3, which is fixedly connected to the air pipe 25 via a channel pipe 35. Second one-way valves 36 are installed on both the channel pipe 35 and the first air inlet 34. These one-way valves work together to precisely control the airflow direction. Regardless of whether the piston 39 moves upward or downward, it can always force the gas into the pipe leading to the air pipe 25, thereby preventing airflow backflow and ensuring the continuity and stability of the jet effect at the nozzle 24.

[0043] The continuous air supply function is achieved by an airflow switching mechanism inside the piston 39. The piston 39 has a vertical channel 41 inside, with a transverse channel communicating with it at its top. A spring slider 42 is slidably connected within the transverse channel, and the lower surface of the spring slider 42 is designed as an inclined plane. A baffle 43 is fixedly connected to one side of the spring slider 42. Inside the piston 39, on one side of the vertical channel 41, there is also an independent air passage 44. The baffle 43 moves above the opening of this air passage 44, opening or closing it. A vertical... The top surface of the straight rod 40 is also designed as an inclined surface, which is symmetrically matched with the inclined surface of the spring slider 42. When the piston 39 moves downward to a certain position, the inclined surface of the vertical rod 40 will push the spring slider 42, compress its spring, and drive the baffle 43 to move, thereby changing the passage state between the vertical channel 41 and the air passage 44. When the piston 39 moves upward and disengages, the spring will reset the spring slider 42 and the baffle 43. This realizes the automatic switching of the airflow path according to the direction of piston 39 movement, ensuring that airflow can be supplied to the discharge system whether in the stamping stroke or the return stroke, without the need for manual intervention to control the direction throughout the process.

[0044] Working principle: When the stamping equipment drives the connecting plate 38 to move the connecting rod 37 and piston 39 downward in the cylinder 3, the vertical rod 40 at the bottom of the piston 39 pushes up the spring slider 42, causing the baffle 43 to close the air passage 44. At the same time, the piston 39 compresses the air in the lower chamber of the cylinder 3, forcing the airflow through the channel pipe 35 and the second one-way valve 36 on it into the air pipe 25. When the stamping equipment returns and drives the piston 39 upward, the spring slider 42 resets, the baffle 43 opens the air passage 44 and closes the vertical channel 41 and the first air inlet 34. Simultaneously, the piston 39 compresses the air in the upper chamber of the cylinder 3, forcing the airflow through the first air inlet 34 and the second one-way valve 36 above it into the air pipe 25. Thus, regardless of the stamping stroke or the return stroke, the continuously generated airflow is delivered from the air pipe 25 to the nozzle 24 on the inner wall of the neck pipe 22 and ejected at high speed. A negative pressure is formed at the feed inlet 21 with the Venturi effect, which actively sucks in the waste material falling through the through pipe 13 and accelerates it through the neck pipe 22 and the diffuser pipe 23, and finally smoothly discharges it from the discharge port 14, realizing the continuous automatic removal of waste material.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wire termination punch die, characterized by, The mold includes a mold shell (1) and a cylinder (3) disposed on one side of the mold shell (1). The top of the cylinder (3) is provided with a sliding hole (32). Mounting plates (11) are provided on both sides of the top of the mold shell (1). A mold groove (12) is provided on the top of the mold shell (1), and a through pipe (13) is provided at the bottom of the mold groove (12). A discharge pipe (2) is provided inside the mold shell (1) below the mold groove (12). The discharge pipe (2) is used to discharge the waste material generated after drilling. The discharge pipe (2) includes a feed inlet (21), which is attached to the bottom of the mold groove (12). The bottom of the feed inlet (21) is fixedly connected to a neck tube (22), and the feed inlet (21) gradually shrinks towards the neck tube (22). The bottom of the neck tube (22) is fixedly connected to a gradually expanding diffuser tube (23), and an atmospheric passage hole is opened on the surface of the feed inlet (21).

2. A punch die for a wiring terminal according to claim 1, wherein The discharge pipe (2) and the through pipe (13) are located on the same vertical line, and the bottom of the mold shell (1) is provided with a discharge port (14) that is located on the same vertical line as the discharge pipe (2).

3. A punch die for a wiring terminal according to claim 2, wherein The neck tube (22) is fixedly connected to two downwardly inclined trachea (25) on both sides, and the other ends of the two trachea (25) are merged into one tube.

4. A punch die for a wiring terminal according to claim 3, wherein The inner wall of the neck tube (22) is provided with a nozzle (24) that communicates with the air tube (25), wherein the nozzle (24) is located on the inner wall at the upper end of the neck tube (22).

5. A punch die for a wiring terminal according to claim 4, wherein A connecting frame (31) is fixedly connected to one side of the mold shell (1), and a cylinder (3) is fixedly connected to the lower part of the connecting frame (31). A vent hole is provided below the cylinder (3), and a first air inlet (34) is opened on the inner wall of the upper end of the cylinder (3). The first air inlet (34) is connected to a pipe that merges with the air pipe (25).

6. A wire termination piercing die as defined in claim 5, wherein, A connecting rod (37) is slidably connected inside the sliding hole (32), wherein a connecting plate (38) for connecting to the lifting device of the stamping equipment is fixedly connected to the top of the connecting rod (37), and a piston (39) is fixedly connected to the bottom of the connecting rod (37).

7. A wire termination piercing die as defined in claim 6, wherein, A first one-way valve (33) is fixedly connected to the lower end surface of the cylinder (3). A second air inlet is provided at the bottom of the cylinder (3). A channel pipe (35) is fixedly connected between the second air inlet and the air pipe (25). A second one-way valve (36) is installed on both the channel pipe (35) and the first air inlet (34). A sliding hole (32) is provided at the top of the cylinder (3).

8. A wire termination piercing die as defined in claim 7, wherein, The piston (39) has a vertical channel (41) inside, and a horizontal channel is provided at the top of the vertical channel (41). A spring slider (42) is slidably connected in the horizontal channel. The lower surface of the spring slider (42) is inclined. A baffle (43) is fixedly connected to one side of the spring slider (42). An air passage (44) is also provided inside the piston (39) on one side of the vertical channel (41). The baffle (43) moves at the opening of the air passage (44).

9. A wire termination piercing die as defined in claim 8, wherein, The inner bottom of the air cylinder (3) is fixedly connected with a vertical rod (40), wherein the top surface of the vertical rod (40) is a slope surface and is mutually symmetrical with the slope surface of the spring sliding block (42).

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