Mold closing device for injection molding production of garbage can plastic part

Abstract

The utility model relates to the technical field of plastic product forming equipment, and discloses a mold closing device for injection molding production of garbage can plastic parts, which comprises a machine body, and supporting columns are arranged at four corners of the top of the machine body. According to the mold closing device for injection molding production of the garbage can plastic part, the hydraulic cylinder is started by operating the control device, so that the output end of the hydraulic cylinder pushes the mounting plate to drive the movable mold to do stamping motion downwards, a mold core of the fixed mold is located in the movable mold, and an ejection plate at the edge of the mold core is in butt joint with a laminating plate at the bottom of the movable mold; then a motor is started to enable a linkage shaft to drive a driving wheel to rotate, a belt is matched to drive a driven wheel to rotate together, meanwhile, a driven shaft can drive a gear to rotate, the gear and a toothed plate are in meshing transmission, two positioning rods are inserted into positioning grooves, and the movable mold and the fixed mold are in positioning connection; therefore, the size precision and the surface quality of the plastic part of the garbage can are ensured, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic product molding equipment, and in particular to a mold closing device for injection molding production of plastic parts for garbage cans. Background Technology

[0002] Plastic parts refer to injection-molded products that are formed using molds. In the production process of trash cans, some parts often need to be produced using molds.

[0003] In existing mold-closing devices used for injection molding of plastic trash can parts, the fixed mold and the moving mold are prone to misalignment during mold closing, which affects the production quality of the plastic trash can parts, wastes resources, and reduces production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing mold closing device for injection molding production of plastic parts for trash cans is prone to displacement and misalignment during the mold closing process. Therefore, we propose a mold closing device for injection molding production of plastic parts for trash cans.

[0005] To achieve the above objectives, this application adopts the following technical solution: a mold-closing device for injection molding production of plastic parts for trash cans, comprising a machine body, support columns at the four corners of the top of the machine body, a top plate fixed to the surface of the top of the support columns, a hydraulic cylinder mounted on the top of the top plate, a mounting plate fixed to the output end of the hydraulic cylinder, the mounting plate being slidably mounted on the surface of the support columns, a moving mold fixed to the bottom of the mounting plate, a fixed mold mounted on the top of the machine body, slots formed on both sides of the top of the machine body, a motor mounted on one side of the machine body, and a control device mounted on one side of the machine body. The motor is electrically connected to the control device. The output end of the motor is provided with a linkage shaft. A drive wheel is fixed at the bottom of the linkage shaft. A gear is provided inside the machine body. A driven shaft is rotatably connected inside the gear. The driven shaft passes through the bottom of the machine body and is fixed with a driven wheel. The drive wheel and the driven wheel are connected by a belt. Limit rods are fixed on both sides inside the machine body. A positioning rod is slidably installed at one end of the limit rod. A toothed plate is fixed on one side of the limit rod. The surface of the toothed plate meshes with the surface of the gear. Positioning grooves that cooperate with the positioning rods are opened on both sides of the moving mold.

[0006] Preferably, the bottom of the positioning rod is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to the limiting rod.

[0007] Preferably, a limiting frame is installed inside the machine body, the top surface of the driven shaft is rotatably connected to the inside of the limiting frame, and the limiting frame is located above the gear.

[0008] Preferably, an anti-slip pad is fixed to one side of the positioning rod.

[0009] Preferably, the control device includes a display screen and a controller, the controller being electrically connected to the hydraulic cylinder.

[0010] Preferably, the top of the fixed mold has a placement groove, and the placement groove is annular in shape.

[0011] Preferably, a plurality of springs are fixed inside the placement groove, the plurality of springs are arranged in a circle, and a top plate is fixed to the top of the springs.

[0012] Preferably, the bottom of the moving mold is fixed with a bonding plate that cooperates with the ejector plate.

[0013] Preferably, the surfaces of the ejector plate and the bonding plate that come into contact with each other are provided with receiving grooves.

[0014] Preferably, the controller is a PLC controller and the display screen is a touch screen.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] In this invention, the hydraulic cylinder is activated by the operating control device, causing the output end of the hydraulic cylinder to push the mounting plate and drive the moving mold to perform a downward punching motion. This positions the mold core of the fixed mold inside the moving mold, and aligns the ejector plate at the edge of the mold core with the mating plate at the bottom of the moving mold. Subsequently, the motor is activated, causing the linkage shaft to drive the drive wheel to rotate, which in turn drives the driven wheel to rotate along with the belt. At the same time, the driven shaft drives the gear to rotate, and the gear meshes with the gear plate, causing the two positioning rods to insert into the positioning grooves. This provides a positioning connection between the moving mold and the fixed mold, ensuring that the moving mold and the fixed mold can be precisely aligned when closed. This guarantees the dimensional accuracy and surface quality of the plastic parts for the trash can, and improves production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the positioning rod structure of this utility model;

[0020] Figure 4 This is a bottom view of the positioning rod structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the fixed mold structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the moving model structure from below.

[0023] Legend: 1. Body; 2. Support column; 3. Top plate; 4. Hydraulic cylinder; 5. Mounting plate; 6. Moving mold; 7. Fixed mold; 8. Groove; 9. Motor; 10. Linkage shaft; 11. Drive wheel; 12. Gear; 13. Driven shaft; 14. Driven wheel; 15. Limiting rod; 16. Gear plate; 17. Positioning rod; 18. Positioning groove; 19. Slide groove; 20. Limiting frame; 21. Anti-slip pad; 22. Display screen; 23. Controller; 24. Placement groove; 25. Spring; 26. Ejector plate; 27. Adhesive plate; 28. Receiving groove. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] Reference Figures 1-6As shown, this utility model provides a technical solution: a mold clamping device for injection molding production of plastic parts for trash cans, including a machine body 1, with support columns 2 at each of the four corners of the top of the machine body 1, a top plate 3 fixed to the surface of the top of the support columns 2, a hydraulic cylinder 4 mounted on the top of the top plate 3, a mounting plate 5 fixed to the output end of the hydraulic cylinder 4, the mounting plate 5 being slidably mounted on the surface of the support columns 2, a moving mold 6 fixed to the bottom of the mounting plate 5, a fixed mold 7 mounted on the top of the machine body 1, and slots 8 opened on both sides of the top of the machine body 1, with a mold 7 mounted on one side of the machine body 1. The machine body 1 has a motor 9 and a control device installed on one side. The motor 9 is electrically connected to the control device. A linkage shaft 10 is provided at the output end of the motor 9. A drive wheel 11 is fixed at the bottom of the linkage shaft 10. A gear 12 is provided inside the machine body 1. A driven shaft 13 is rotatably connected inside the gear 12. A driven wheel 14 is fixed through the bottom of the machine body 1 via the driven shaft 13. The drive wheel 11 and the driven wheel 14 are connected by a belt. Limit rods 15 are fixed on both sides inside the machine body 1. A positioning rod is slidably installed at one end of the limit rod 15. 17. A toothed plate 16 is fixed to one side of the limiting rod 15. The surface of the toothed plate 16 meshes with the surface of the gear 12. Positioning grooves 18 that cooperate with the positioning rod 17 are provided on both sides of the moving mold 6. The control device includes a display screen 22 and a controller 23. The controller 23 is electrically connected to the hydraulic cylinder 4. The hydraulic cylinder 4 is started by operating the control device, so that the output end of the hydraulic cylinder 4 pushes the mounting plate 5 to drive the moving mold 6 to make a downward punching motion, so that the mold core of the fixed mold 7 is located inside the moving mold 6, and the ejector plate 26 at the edge of the mold core and the moving mold 6 are pressed together. The mating plate 27 at the bottom of mold 6 is connected, and then the motor 9 is started to drive the drive wheel 11 to rotate through the linkage shaft 10. The drive wheel 14 is driven to rotate together with the belt. At the same time, the driven shaft 13 drives the gear 12 to rotate. At this time, the gear 12 meshes with the toothed plate 16, so that the two positioning rods 17 are inserted into the positioning groove 18 to position and connect the moving mold 6 and the fixed mold 7. This ensures that the moving mold 6 and the fixed mold 7 can be accurately aligned when closed, thereby ensuring the dimensional accuracy and surface quality of the trash can plastic parts and improving production efficiency.

[0026] Reference Figure 4 As shown in this embodiment: the bottom of the positioning rod 17 is provided with a sliding groove 19, and the inner wall of the sliding groove 19 is slidably connected to the limiting rod 15. By setting the sliding groove 19, the movement trajectory of the positioning rod 17 can be restricted, thereby ensuring that the positioning rod 17 can smoothly position the moving mold 6.

[0027] Reference Figure 3 As shown in this embodiment: a limiting frame 20 is installed inside the machine body 1. The top surface of the driven shaft 13 is rotatably connected to the inside of the limiting frame 20. The limiting frame 20 is located above the gear 12. The position of the gear 12 is restricted by the limiting frame 20 to prevent the gear 12 from changing position during rotation and affecting the transmission effect.

[0028] Reference Figure 3 As shown in this embodiment: an anti-slip pad 21 is fixed on one side of the positioning rod 17. Through the setting of the anti-slip pad 21, the rubber material of the anti-slip pad 21 can increase the friction between the positioning rod 17 and the moving mold 6, so as to avoid the equipment from shaking after positioning and enhance the precision of the plastic parts of the trash can.

[0029] Reference Figures 5-6 As shown in this embodiment: the top of the fixed mold 7 is provided with a placement groove 24, which is annular in shape. Multiple springs 25 are fixed inside the placement groove 24 and are arranged in a circle. An ejector plate 26 is fixed on the top of the springs 25. A bonding plate 27 that cooperates with the ejector plate 26 is fixed on the bottom of the moving mold 6. With the arrangement of the placement groove 24, springs 25, ejector plate 26 and bonding plate 27, the plastic part formed on the mold core can be ejected when the moving mold 6 and the fixed mold 7 are closed, which facilitates the demolding of the trash can plastic part and further improves production efficiency.

[0030] Reference Figures 5-6 As shown in this embodiment, the ejector plate 26 and the bonding plate 27 are both provided with receiving grooves 28 on their contact surfaces. Through the structure of the ejector plate 26 and the bonding plate 27, a vacuum environment can be formed inside the receiving groove 28 when they are joined, which can adsorb the edge of the mold core, thereby further ensuring the stability of the mold core during the molding process, avoiding displacement, and further improving the molding quality of the trash can plastic parts.

[0031] Reference Figure 1 As shown in this embodiment: the controller 23 is a PLC controller and the display screen 22 is a touch screen. By using a PLC controller, its advantages such as high control accuracy and good stability are utilized. When used in conjunction with the touch screen, the operation is convenient and the operation parameters can be set and displayed intuitively.

[0032] Working principle: The user starts the hydraulic cylinder 4 through the operating control device, causing the output end of the hydraulic cylinder 4 to push the mounting plate 5, which in turn drives the moving mold 6 to move downwards in a punching motion. This positions the mold core of the fixed mold 7 inside the moving mold 6, and aligns the ejector plate 26 at the edge of the mold core with the mating plate 27 at the bottom of the moving mold 6. Subsequently, the motor 9 is started, causing the linkage shaft 10 to drive the drive wheel 11 to rotate, which in turn drives the driven wheel 14 to rotate along with the belt. At the same time, the driven shaft 13 drives the gear 12 to rotate. At this time, the gear 12 meshes with the gear plate 16, causing the two positioning rods 17 to insert into the positioning groove 18, thus positioning and connecting the moving mold 6 and the fixed mold 7. This ensures that the moving mold 6 and the fixed mold 7 can be precisely aligned when closed, thereby ensuring the dimensional accuracy and surface quality of the trash can plastic parts and improving production efficiency. The sliding groove 19 restricts the movement trajectory of the positioning rods 17, ensuring that the positioning rods 17 can smoothly position the moving mold 6. The position of the gear 12 is restricted by the limit frame 20, preventing... The gear 12's position changes during rotation, affecting the transmission effect. The anti-slip pad 21, with its rubber material, increases the friction between the positioning rod 17 and the moving mold 6, preventing equipment wobbling after positioning and enhancing the precision of the trash can plastic parts. The placement groove 24, spring 25, ejector plate 26, and bonding plate 27 allow for ejection of the molded plastic parts from the mold core when the moving mold 6 and fixed mold 7 are closed, facilitating demolding and further improving production efficiency. The structure of the ejector plate 26 and bonding plate 27 creates a vacuum environment inside the receiving groove 28 during docking, adsorbing the edges of the mold core and further ensuring its stability during molding, preventing displacement and improving the molding quality of the trash can plastic parts. The use of a PLC controller, with its high control precision and stability, combined with a touchscreen, makes operation convenient and allows for intuitive setting and display of operating parameters.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold clamping device for injection molding production of plastic parts for trash cans, comprising a body (1), characterized in that: The machine body (1) has four support columns (2) at the top corners. A top plate (3) is fixed to the top surface of the support column (2). A hydraulic cylinder (4) is installed on the top of the top plate (3). An installation plate (5) is fixed to the output end of the hydraulic cylinder (4). The installation plate (5) is slidably installed on the surface of the support column (2). A moving mold (6) is fixed to the bottom of the installation plate (5). A fixed mold (7) is installed on the top of the machine body (1). Slots (8) are opened on both sides of the top of the machine body (1). A motor (9) is installed on one side of the machine body (1). A control device is installed on one side of the machine body (1). The motor (9) is electrically connected to the control device. A linkage shaft (10) is provided at the output end of the motor (9). A drive wheel (11) is fixed at the bottom of the shaft (10). A gear (12) is provided inside the body (1). A driven shaft (13) is rotatably connected inside the gear (12). A driven wheel (14) is fixed through the bottom of the body (1) through the driven shaft (13). The drive wheel (11) and the driven wheel (14) are connected by a belt. Limit rods (15) are fixed on both sides inside the body (1). A positioning rod (17) is slidably installed at one end of the limit rod (15). A toothed plate (16) is fixed on one side of the limit rod (15). The surface of the toothed plate (16) meshes with the surface of the gear (12). Positioning grooves (18) that cooperate with the positioning rods (17) are provided on both sides of the moving mold (6).

2. The mold clamping device for injection molding production of plastic parts for trash cans according to claim 1, characterized in that: The bottom of the positioning rod (17) is provided with a sliding groove (19), and the inner wall of the sliding groove (19) is slidably connected to the limiting rod (15).

3. The mold clamping device for injection molding production of plastic parts for trash cans according to claim 1, characterized in that: The body (1) is equipped with a limit frame (20) inside, and the surface of the top of the driven shaft (13) is rotatably connected to the inside of the limit frame (20). The limit frame (20) is located above the gear (12).

4. The mold clamping device for injection molding production of plastic parts for trash cans according to claim 1, characterized in that: An anti-slip pad (21) is fixed on one side of the positioning rod (17).

5. A mold clamping device for injection molding production of plastic parts for trash cans according to claim 1, characterized in that: The control device includes a display screen (22) and a controller (23), the controller (23) being electrically connected to the hydraulic cylinder (4).

6. A mold clamping device for injection molding production of plastic parts for trash cans according to claim 1, characterized in that: The top of the fixed mold (7) is provided with a placement groove (24), and the placement groove (24) is annular in shape.

7. A mold clamping device for injection molding production of plastic parts for trash cans according to claim 6, characterized in that: Multiple springs (25) are fixed inside the placement slot (24). The multiple springs (25) are arranged in a circle. A top plate (26) is fixed to the top of the springs (25).

8. A mold clamping device for injection molding production of plastic parts for trash cans according to claim 1, characterized in that: The bottom of the moving mold (6) is fixed with a bonding plate (27) that works in conjunction with the ejector plate (26).

9. A mold clamping device for injection molding production of plastic parts for trash cans according to claim 7, characterized in that: The surfaces of the top plate (26) and the bonding plate (27) that are in contact with each other are provided with receiving grooves (28).

10. A mold clamping device for injection molding production of plastic parts for trash cans according to claim 5, characterized in that: The controller (23) is a PLC controller, and the display screen (22) is a touch screen.

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