Punching device for plastic part production

Abstract

The utility model relates to the technical field of plastic part production, specifically disclose a punching device for plastic part production, including work table, the upper end surface of work table is provided with two symmetrical setting limit structure, the rear end surface fixedly connected with mounting bracket of work table, the bottom of mounting bracket is provided with moving plate, the bottom of moving plate is detachably connected with punch head through bolt, the top of mounting bracket is installed with the punch cylinder of output end and punch head fixed connection, through two limit plates clamping plastic part, first electric push rod drive pressure plate down, press fixed work piece, the multi -point solid fixed mode effectively prevented the displacement and deformation of work piece in the punching process, improved the punching precision and stability, through the setting of elastic component effectively absorbed the instantaneous impact force produced when punching, reduced the vibration and damage of core components such as punch cylinder, moving plate to the, thereby improved the stability and service life of whole device.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts manufacturing technology, and specifically discloses a punching device for plastic parts manufacturing. Background Technology

[0002] Punching is a common processing step in the production of plastic parts. It is used to create holes of specific shapes and sizes on plastic workpieces to meet assembly, ventilation or other functional requirements.

[0003] Traditional equipment typically uses simple clamps or pressure plates to fix the workpiece. However, during the punching process, the workpiece is prone to displacement or loosening, resulting in deviations in the punching position, which affects processing accuracy and product qualification rate. Furthermore, the instantaneous impact force generated during punching acts directly on the machine body, which can easily lead to loosening, wear, or even damage of key components of the equipment over long-term use, affecting the stability and service life of the equipment. Therefore, a punching device for plastic parts production is needed to solve this problem. Utility Model Content

[0004] This utility model proposes a punching device for producing plastic parts. It effectively prevents the displacement and deformation of the workpiece during the punching process by using a multi-point three-dimensional fixing method, thereby improving the punching accuracy and stability. The elastic component effectively absorbs the instantaneous impact force generated during punching.

[0005] This utility model is implemented as follows: a punching device for producing plastic parts includes a worktable, two symmetrically arranged limiting structures are provided on the upper end face of the worktable, a mounting frame is fixedly connected to the rear end face of the worktable, a movable plate is provided at the bottom end of the mounting frame, a punching head is detachably connected to the bottom end of the movable plate by bolts, and a stamping cylinder with an output end fixedly connected to the punching head is installed at the top end of the mounting frame. The limiting structure includes fixed cavities symmetrically fixed to the upper surface of the worktable, limiting plates slidably disposed in the two fixed cavities, brackets fixedly connected to the upper surfaces of the two fixed cavities, pressure plates disposed below the brackets, a first electric push rod installed on the upper surface of the brackets and whose output end is fixedly connected to the pressure plates, a fixed platform fixedly connected to the upper surface of the fixed cavities, positive and negative lead screws rotatably connected to the inside of the fixed platform through bearings, a drive motor installed on the outer wall of the fixed platform and whose output end is fixedly connected to the positive and negative lead screws, and a connecting rod threaded to both ends of the positive and negative lead screws and fixedly connected to the limiting plates; The front end face of the mounting bracket is fixedly connected to a positioning plate located below the movable plate. The positioning plate has a through-hole, and elastic components are symmetrically arranged between the upper end face of the positioning plate and the movable plate.

[0006] As a preferred embodiment of the punching device for producing plastic parts according to this utility model, a fixing plate is fixedly connected to the left side of the upper surface of the workbench, a push plate is provided on the right side of the fixing plate, and a second electric push rod with an output end fixedly connected to the push plate is installed on the left side of the fixing plate.

[0007] As a preferred embodiment of the punching device for producing plastic parts according to this utility model, rubber pads are provided on the opposite sides of the two limiting plates and at the bottom of the pressure plate.

[0008] As a preferred embodiment of the punching device for producing plastic parts according to this utility model, both the top end of the fixed cavity and the bottom end of the fixed platform are provided with through slots.

[0009] As a preferred embodiment of the punching device for producing plastic parts according to this utility model, the upper end face of the worktable is provided with a material discharge hole corresponding to the punching head, and a collection box is provided below the worktable.

[0010] As a preferred embodiment of the punching device for producing plastic parts according to this utility model, a controller is installed on the front end face of the worktable, and the punching cylinder, the first electric push rod, the drive motor and the second electric push rod are all electrically connected to the controller.

[0011] The beneficial effects of this utility model are: The plastic part is clamped by two limiting plates, and the first electric push rod drives the pressure plate to press down and fix the workpiece. The multi-point three-dimensional fixing method effectively prevents the workpiece from shifting and deforming during the punching process, and improves the punching accuracy and stability. The elastic components effectively absorb the instantaneous impact force generated during punching, reducing vibration and damage to core components such as the stamping cylinder and moving plate, thereby improving the stability and service life of the entire device. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0013] Figure 1 This is an overall structural diagram of a punching device for producing plastic parts according to this utility model.

[0014] Figure 2 This is a structural diagram of the limiting mechanism of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the workbench of this utility model.

[0016] The markings in the diagram are: 1. Workbench; 2. Mounting bracket; 201. Stamping cylinder; 202. Moving plate; 203. Punching head; 204. Positioning plate; 205. Elastic component; 3. Fixed cavity; 301. Limiting plate; 302. Bracket; 303. First electric actuator; 304. Pressure plate; 305. Fixed platform; 306. Positive and negative lead screws; 307. Drive motor; 4. Fixed plate; 401. Second electric actuator; 402. Push plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0018] Please see Figure 1-3 A punching device for producing plastic parts includes a worktable 1. The upper end face of the worktable 1 is provided with two symmetrically arranged limiting structures. The rear end face of the worktable 1 is fixedly connected to a mounting frame 2. The bottom end of the mounting frame 2 is provided with a movable plate 202. The bottom end of the movable plate 202 is detachably connected to a punching head 203 by bolts. The top end of the mounting frame 2 is equipped with a punching cylinder 201 whose output end is fixedly connected to the punching head 203. The limiting structure includes fixed cavities 3 symmetrically fixed to the upper surface of the worktable 1, limiting plates 301 slidably disposed in the two fixed cavities 3, brackets 302 fixedly connected to the upper surfaces of the two fixed cavities 3, pressure plates 304 disposed below the brackets 302, a first electric push rod 303 mounted on the upper surface of the brackets 302 and whose output end is fixedly connected to the pressure plates 304, a fixed platform 305 fixedly connected above the fixed cavities 3, a positive and negative lead screw 306 rotatably connected to the inside of the fixed platform 305 through bearings, a drive motor 307 mounted on the outer wall of the fixed platform 305 and whose output end is fixedly connected to the positive and negative lead screw 306, and a connecting rod threadedly connected to both ends of the positive and negative lead screw 306 and fixedly connected to the limiting plates 301; The front end face of the mounting bracket 2 is fixedly connected to a positioning plate 204 located below the movable plate 202. The positioning plate 204 has a through positioning hole, and elastic components 205 are symmetrically arranged between the upper end face of the positioning plate 204 and the movable plate 202.

[0019] In this embodiment: a plastic part is placed on the worktable 1. The controller starts the drive motor 307, which drives the positive and negative lead screws 306 to rotate, causing the connecting rod and the limiting plate 301 to slide within the fixed cavity 3. The distance between the two limiting plates 301 is adjusted to clamp the plastic part. Then, the first electric push rod 303 drives the pressure plate 304 to press down, further pressing and fixing the workpiece. The limiting structure can fix the workpiece, preventing it from moving during punching and improving punching accuracy and stability. When the stamping cylinder 201 is activated, it pushes the moving plate 202 and the punching head 203 to move down to perform punching. The elastic component 205 (which includes a sleeve, a rod slidably connected inside the sleeve, and a spring sleeved outside the rod) buffers the impact force during the punching process, reduces the impact of punching on the equipment, and extends its service life.

[0020] As a technical optimization of this utility model, a fixing plate 4 is fixedly connected to the left side of the upper surface of the workbench 1, a push plate 402 is provided on the right side of the fixing plate 4, and a second electric push rod 401 with an output end fixedly connected to the push plate 402 is installed on the left side of the fixing plate 4.

[0021] In this embodiment: after punching is completed, the controller controls the second electric push rod 401 to extend and push the push plate 402 to move to the right, which can push the plastic part out of the worktable 1. When continuous punching is required, the push plate 402 can push the plastic part to move on the worktable 1.

[0022] As a technical optimization of this utility model, rubber pads are provided on the opposite side of the two limiting plates 301 and the bottom of the pressure plate 304.

[0023] In this embodiment, rubber pads are provided on the limiting plate 301 and the pressure plate 304 to increase the friction with the workpiece, prevent the workpiece from sliding during the punching process, and avoid scratching the workpiece surface when clamping, thereby improving product quality and protection.

[0024] As a technical optimization of this utility model, both the top end of the fixed cavity 3 and the bottom end of the fixed platform 305 are provided with through grooves.

[0025] In this embodiment, through slots are provided at the top of the fixed cavity 3 and the bottom of the fixed platform 305, allowing the connecting rod and the limiting plate 301 to move smoothly and avoiding structural interference.

[0026] As a technical optimization of this utility model, the upper end face of the workbench 1 is provided with a material discharge hole corresponding to the punch head 203, and a collection box is provided below the workbench 1.

[0027] In this embodiment: During punching, waste material falls directly into the collection box below the worktable 1 through the discharge hole. The operator periodically pulls out the collection box to clean the waste. The discharge hole is designed to align with the punching head 203 to ensure accurate waste material placement.

[0028] As a technical optimization of this utility model, a controller is installed on the front end face of the workbench 1, and the stamping cylinder 201, the first electric push rod 303, the drive motor 307 and the second electric push rod 401 are all electrically connected to the controller.

[0029] In this embodiment: After the operator sets the punching parameters through the controller, the controller sequentially controls the drive motor 307 to adjust the limit plate 301, the first electric push rod 303 to drive the pressure plate 304 to press, the punching cylinder 201 to punch, and the second electric push rod 401 to unload the material.

[0030] The working principle and usage process of this utility model are as follows: First, the plastic part to be punched is placed on the worktable 1. Then, the controller starts the drive motor 307, which drives the forward and reverse lead screws 306 to rotate, driving the connecting rods at both ends to move synchronously in opposite directions, thereby adjusting the distance between the two limiting plates 301 and clamping and positioning the plastic part from both sides. Next, the controller starts the first electric push rod 303, which pushes the pressure plate 304 down, applying pressure to the plastic part from above, forming a three-point (both sides and above) three-dimensional clamping, ensuring that the workpiece is completely fixed during processing and will not move at all.

[0031] After the workpiece is fixed, the stamping cylinder 201 is activated, driving the moving plate 202 and the punching head 203 at its bottom to move downwards, completing the punching operation. During this process, the elastic component 205 between the positioning plate 204 and the moving plate 202 (the elastic component 205 includes a sleeve, a rod slidably connected inside the sleeve, and a spring sleeved outside the rod) effectively buffers the impact force brought by the stamping, protecting the equipment structure. The waste material generated by punching falls into the collection box below through the discharge hole on the worktable 1 for easy centralized cleaning.

[0032] After punching is completed, the first electric push rod 303 and the drive motor 307 reset, releasing the clamp on the workpiece. Subsequently, the controller activates the second electric push rod 401, which pushes the push plate 402 to push the punched plastic part off the worktable 1, achieving automatic unloading.

[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A punching device for producing plastic parts, comprising a worktable (1), characterized in that: The upper surface of the workbench (1) is provided with two symmetrically arranged limiting structures. The rear end face of the workbench (1) is fixedly connected to a mounting frame (2). The bottom end of the mounting frame (2) is provided with a movable plate (202). The bottom end of the movable plate (202) is detachably connected to a punch head (203) by bolts. The top end of the mounting frame (2) is equipped with a stamping cylinder (201) whose output end is fixedly connected to the punch head (203). The limiting structure includes a fixed cavity (3) symmetrically fixed to the upper surface of the worktable (1), a limiting plate (301) slidably disposed in the two fixed cavities (3), a bracket (302) fixedly connected to the upper surface of the two fixed cavities (3), a pressure plate (304) disposed below the bracket (302), a first electric push rod (303) installed on the upper surface of the bracket (302) and whose output end is fixedly connected to the pressure plate (304), a fixed platform (305) fixedly connected to the upper surface of the fixed cavity (3), a positive and negative screw (306) rotatably connected to the inside of the fixed platform (305) through a bearing, a drive motor (307) installed on the outer wall of the fixed platform (305) and whose output end is fixedly connected to the positive and negative screw (306), and a connecting rod threadedly connected to both ends of the positive and negative screw (306) and fixedly connected to the limiting plate (301); The front end face of the mounting bracket (2) is fixedly connected to a positioning plate (204) located below the moving plate (202). The positioning plate (204) has a positioning hole through it. Elastic components (205) are symmetrically arranged between the upper end face of the positioning plate (204) and the moving plate (202).

2. The punching device for producing plastic parts according to claim 1, characterized in that: A fixing plate (4) is fixedly connected to the left side of the upper surface of the workbench (1). A push plate (402) is provided on the right side of the fixing plate (4). A second electric push rod (401) with an output end and fixedly connected to the push plate (402) is installed on the left side of the fixing plate (4).

3. The punching device for producing plastic parts according to claim 1, characterized in that: Rubber pads are provided on the opposite side of the two limiting plates (301) and the bottom of the pressure plate (304).

4. The punching device for producing plastic parts according to claim 1, characterized in that: The top of the fixed cavity (3) and the bottom of the fixed platform (305) are both provided with through slots.

5. A punching device for producing plastic parts according to claim 1, characterized in that: The upper surface of the workbench (1) is provided with a material discharge hole corresponding to the punch head (203), and a collection box is provided below the workbench (1).

6. A punching device for producing plastic parts according to claim 2, characterized in that: The front end of the workbench (1) is equipped with a controller, and the stamping cylinder (201), the first electric push rod (303), the drive motor (307) and the second electric push rod (401) are all electrically connected to the controller.

Images