CN212171133U - A core guide structure for plastic molds - Google Patents

Abstract

The utility model discloses a core guide structure for a plastic mold, which comprises a lower mold and an upper mold. An injection tube is inserted into the inner cavity of the upper mold, and a support plate is inserted into the center of the inner cavity of the lower mold. The center position of the right side of the support plate is locked with an electric telescopic rod, the right side of the electric telescopic rod is provided with a first baffle plate, and the left side of the bottom end of the inner cavity of the lower mold is locked with a motor by screws , the output end of the motor is provided with a first screw, the top of the outer wall of the first screw is interference fit with the inner ring of the bearing, the outer ring of the bearing is fixedly connected with the inner wall of the lower die, the first screw A worm is interferingly fitted at the center of the outer wall, and a first rectangular block is threadedly connected to the upper and lower ends of the outer wall of the first screw rod. The plastic mold adopts a mold core guide structure, and the device can effectively facilitate the demoulding operation of the injection mold, avoid the adhesion of the workpiece and the inner wall of the mold cavity, and is more in line with the actual use requirements.

Description

A core guide structure for plastic molds

technical field

The utility model relates to the technical field of moulds, in particular to a core guiding structure for plastic moulds.

Background technique

Injection mold is a tool for producing plastic products, and it is also a tool for imparting complete structure and precise dimensions to plastic products. Injection molding is a processing method used in mass production of certain parts with complex shapes. The injection molding machine injects high pressure into the mold cavity, and after cooling and solidifying, a molded product is obtained. The injection mold is divided into thermosetting plastic mold, automobile mold and thermoplastic plastic mold according to the molding characteristics. Casting molds, thermoforming molds, hot stamping molds (compression molds), injection molds, etc.;

After the injection molding of the existing injection mold is completed, when the mold is opened, the phenomenon of adhesion between the workpiece and the mold cavity often occurs, which makes it inconvenient to remove the workpiece, takes time and labor, reduces the practicability of the injection mold, and does not meet the actual use. need.

Utility model content

The purpose of the present invention is to provide a core guide structure for plastic molds, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a core guide structure for a plastic mold, comprising a lower mold and an upper mold, the inner cavity of the upper mold is inserted with an injection tube, and the inner cavity of the lower mold is inserted with an injection tube. A support plate is inserted in the center position, an electric telescopic rod is locked at the center position of the right side of the support plate by screws, and a first baffle is arranged on the right side of the electric telescopic rod, and the bottom end of the inner cavity of the lower mold The left side is locked with a motor by screws, the output end of the motor is provided with a first screw, the top of the outer wall of the first screw is interference-fitted with an inner ring of a bearing, and the outer ring of the bearing is fixed with the inner wall of the lower die The center position of the outer wall of the first screw is interference fit with a worm, the upper and lower ends of the outer wall of the first screw are threadedly connected with a first rectangular block, and the inner cavity of the lower mold is fixed on the left side at the front and rear ends. The outer ring of the bearing is connected, the inner ring of the bearing is interference-fitted with a second screw, the center of the outer wall of the second screw is interference-fitted with the worm, and the front and rear ends of the outer wall of the second screw are connected. A second rectangular block is threadedly connected, the inner cavity of the first rectangular block and the second rectangular block are provided with support rods, and the upper and lower ends of the inner cavity of the support rod are provided with sliding grooves. A slider is embedded in the left side of the inner cavity, one end of a connecting rod is arranged on the right side of the slider, and the other end of the right side of the connecting rod extends out of the inner cavity of the support rod and is provided with a second baffle plate.

Preferably, the threads at the upper and lower ends of the outer wall of the first screw rod are threads in opposite directions.

Preferably, the second screw is located on the right side of the worm.

Preferably, the shape of the outer wall of the connecting rod is an "L" shape.

Preferably, the number of the second baffles is four, and the four second baffles are respectively located at the upper and lower ends of the front and rear sides of the first baffle.

Compared with the prior art, the beneficial effect of the present utility model is that: the core guide structure for the plastic mold, after the motor is normally started, urges the first screw rod to drive the worm to rotate, and the first screw rod urges the first rectangular block to drive the support rod. , The connecting rod and the second baffle move to the outside in the up and down direction, and at the same time, the worm gear drives the second screw to rotate through the worm, and the second rectangular block drives the support rod, the connecting rod and the second baffle to rotate in the front-rear direction through the second screw. The outer side moves, so that the four second baffles are out of contact with the workpiece, so as to realize the demoulding operation of the workpiece. This device can effectively facilitate the demoulding operation of the injection mold, and avoid the adhesion of the workpiece and the inner wall of the mold cavity, resulting in the failure of normal demoulding. , the operation is simple, the use is convenient, the manpower and material resources are saved, the practicability of the injection mold is improved, and it is more in line with the actual use needs.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the top sectional view of the lower die of the utility model;

3 is a cross-sectional view of a support rod of the utility model;

FIG. 4 is a schematic diagram of the structure of the support plate of the present invention.

In the picture: 1. Lower die, 2. Upper die, 3. Injection tube, 4. Support plate, 5. Electric telescopic rod, 6. First baffle, 7. Motor, 8. First screw, 9. Worm, 10. The first rectangular block, 11, the second screw, 12, the worm gear, 13, the second rectangular block, 14, the support rod, 15, the chute, 16, the slider, 17, the connecting rod, 18, the second baffle .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-4, the present utility model provides a technical solution: a core guide structure for a plastic mold, comprising a lower mold 1 and an upper mold 2, the inner cavity of the upper mold 2 is inserted with an injection tube 3, and the lower mold A support plate 4 is inserted at the center of the inner cavity of The left side of the bottom end of the inner cavity is locked with a motor 7 by screws, and the output end of the motor 7 is provided with a first screw 8. After the motor 7 starts normally, the first screw 8 is urged to drive the worm 9 to rotate, and the first screw 8 and the first screw 8 are driven to rotate. A rectangular block 10 is threadedly connected, so that the first rectangular block 10 drives the support rod 14, the connecting rod 17 and the second baffle 18 to move outward in the up-down direction, and the top of the outer wall of the first screw 8 is interference-fitted with the inner part of the bearing. The outer ring of the bearing is fixedly connected with the inner wall of the lower die 1, the center position of the outer wall of the first screw 8 is interference-fitted with a worm 9, and the upper and lower ends of the outer wall of the first screw 8 are threadedly connected with a first rectangular block 10. The outer ring of the bearing is fixedly connected to the left and front ends of the inner cavity of the mold 1. The inner ring of the bearing is fitted with a second screw 11. 12. Through the meshing relationship between the worm 9 and the worm wheel 12, the worm wheel 12 is urged to drive the second screw 11 to rotate, and through the threaded connection between the second screw 11 and the second rectangular block 13, the second rectangular block 13 is urged to drive the support rods 14, The connecting rod 17 and the second baffle plate 18 move to the outside along the front and rear directions. The front and rear ends of the outer wall of the second screw 11 are screwed with a second rectangular block 13 , and the inner cavity of the first rectangular block 10 and the second rectangular block 13 are both A support rod 14 is provided, the upper and lower ends of the inner cavity of the support rod 14 are provided with chute 15, the left side of the inner cavity of the support rod 14 is embedded with a slider 16, and the right side of the slider 16 is provided with one end of the connecting rod 17 , by reversing the starter motor 7, the motor 7 is urged to drive the first screw 8 and the worm 9 to rotate in the opposite direction, and the first rectangular block 10 is driven by the first screw 8 to drive the support rod 14, the connecting rod 17 and the second baffle 18 to the inside The movement is reset in contact with the first baffle 6, and at the same time, the worm gear 12 is driven by the worm 9 to drive the second screw 11 to rotate in the opposite direction, and the second rectangular block 13 is driven by the second screw 11 to drive the support rod 14, the connecting rod 17 and the second baffle. 18 moves inward to contact with the first baffle 6 and resets. The other end of the right side of the connecting rod 17 extends out of the inner cavity of the support rod 14, and is provided with a second baffle 18. After the motor 7 is normally started, the first screw is urged. 8 drives the worm 9 to rotate, and the first rectangular block 10 is driven by the first screw 8 to drive the support rod 14, the connecting rod 17 and the second baffle 18 to move outwards in the up-down direction, and the worm wheel 12 is driven by the worm 9 to drive the second screw 11. Rotating, the second rectangular block 13 is driven by the second screw 11 to drive the support rod 14, the connecting rod 17 and the second baffle plate 18 to move to the outside in the front-rear direction, so that the four second baffle plates 18 are out of contact with the workpiece, thereby realizing Workpiece demolding operation.

The following is the model and function of each electrical device in this case:

The model of the electric telescopic rod 5 is NKLA22, and the electric telescopic rod 5 is connected with an external power supply, and the external power supply is 380V AC power. Connect or disconnect the external power supply of the electric telescopic rod 5 to make it work or stop working;

The motor 7 is a geared motor, the model is R107R77, and is connected to an external power supply, the external power supply is 380V AC power, the external power supply of the motor 7 is connected to the motor 7 to work, and the external power of the motor 7 is turned off. The motor 7 stops working.

As a preferred solution, further, the threads at the upper and lower ends of the outer wall of the first screw 8 are threads in opposite directions. After the motor 7 is normally started, the first screw 8 is urged to drive the worm 9 to rotate, and the first screw 8 and the first rectangular The threaded connection of the blocks 10 causes the first rectangular block 10 to drive the support rod 14 , the connecting rod 17 and the second baffle 18 to move outward along the up-down direction.

As a preferred solution, further, the second screw 11 is located on the right side of the worm 9, and the worm 9 and the worm wheel 12 are meshed and connected, so that the worm wheel 12 drives the second screw 11 to rotate, and the second screw 11 is connected to the second rectangular block. 13 threaded connection, so that the second rectangular block 13 drives the support rod 14, the connecting rod 17 and the second baffle 18 to move outward along the front-rear direction.

As a preferred solution, further, the shape of the outer wall of the connecting rod 17 is an "L" shape, and the motor 7 is activated by reversing, so that the motor 7 drives the first screw 8 and the worm 9 to rotate in the reverse direction, and the first screw 8 is used to promote the first screw 8. The rectangular block 10 drives the support rod 14 , the connecting rod 17 and the second baffle 18 to move inward and contact the first baffle 6 to reset, and at the same time, the worm wheel 12 is driven by the worm 9 to drive the second screw 11 to rotate in reverse, and the second screw 11 The second rectangular block 13 is urged to drive the support rod 14 , the connecting rod 17 and the second baffle plate 18 to move inward and contact the first baffle plate 6 to reset.

As a preferred solution, further, the number of the second baffles 18 is four, and the four second baffles 18 are located at the upper and lower ends of the front and rear sides of the first baffle 6 respectively. After the motor 7 is normally started, the The first screw 8 drives the worm 9 to rotate, and the first rectangular block 10 is driven by the first screw 8 to drive the support rod 14, the connecting rod 17 and the second baffle 18 to move outward in the up-down direction, and the worm wheel 12 is driven by the worm 9 at the same time. The second screw 11 rotates, and the second rectangular block 13 is driven by the second screw 11 to drive the support rod 14, the connecting rod 17 and the second baffle 18 to move outwards in the front-rear direction, so that the four second baffles 18 are out of contact with the workpiece , so as to realize the demoulding operation of the workpiece.

All the electrical components in this case are connected with the power supply to which they are adapted through wires by those skilled in the art, and an appropriate controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principles The electrical connection between the electrical components is completed in sequence, and the detailed connection means are known in the art. The following mainly introduces the working principle and process, and does not describe the electrical control. The following mainly introduces the working principle and process. , the specific work is as follows.

When in use, the injection molding machine injects the injection molding material into the inner side of the first baffle 6 and the second baffle 18 through the injection pipe 3. After the product is cooled and formed, the power of the electric telescopic rod 5 and the motor 7 is turned on, and the external drive device Drive the upper mold 2 and the injection tube 3 to move to the right. After the electric telescopic rod 5 starts normally, push the first baffle 6 and drive the product, the second baffle 18, the connecting rod 17 and the slider 16 to move to the right. When After the first baffle 6 drives the product and the second baffle 18 to move out of the inner cavity of the lower die 1, the electric telescopic rod 5 stops working. After the motor 7 starts normally, the first screw 8 drives the worm 9 to rotate. The threaded connection with the first rectangular block 10 causes the first rectangular block 10 to drive the support rod 14, the connecting rod 17 and the second baffle 18 to move outwards in the up-down direction, and at the same time through the worm 9 and the worm wheel 12 are engaged and connected, The worm wheel 12 is urged to drive the second screw 11 to rotate, and through the threaded connection between the second screw 11 and the second rectangular block 13, the second rectangular block 13 is urged to drive the support rod 14, the connecting rod 17 and the second baffle 18 to move forward and backward. The outer side moves, so that the four second baffles 18 are out of contact with the workpiece, thereby realizing the demoulding operation of the workpiece, and the motor 7 is started in reverse, so that the motor 7 drives the first screw 8 and the worm 9 to rotate in the reverse direction, through the first screw 8 The first rectangular block 10 is urged to drive the support rod 14, the connecting rod 17 and the second baffle plate 18 to move inward to contact the first baffle plate 6, and at the same time, the worm wheel 12 is driven by the worm 9 to drive the second screw 11 to rotate in the opposite direction. The screw 11 urges the second rectangular block 13 to drive the support rod 14, the connecting rod 17 and the second baffle 18 to move inward to contact the first baffle 6, stop the motor 7 from working, and after the electric telescopic rod 5 starts normally, it drives the first gear The plate 6, the second baffle 18, the connecting rod 17 and the slider 16 move to the left and reset. The device has a simple structure, is easy to operate and use, and can effectively facilitate the demoulding operation of the injection mold, avoiding the adhesion of the workpiece to the inner wall of the mold cavity. More in line with the actual use needs.

In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", " The orientation or positional relationship indicated by "top", "inside", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise expressly specified and limited, the terms "provided with", "shafted", "plugged" ", "welding", "clamping" and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection , it can also be indirectly connected through an intermediate medium, it can be the connection between the two elements or the interaction relationship between the two elements, unless otherwise clearly defined, for those of ordinary skill in the art, the above terms can be understood according to specific circumstances. The specific meaning in the utility model.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a mold core guide structure for plastic mold, includes lower mould (1) and last mould (2), its characterized in that: an injection tube (3) is inserted into an inner cavity of the upper die (2), a support plate (4) is inserted into the center position of the inner cavity of the lower die (1), an electric telescopic rod (5) is locked at the center position of the right side of the support plate (4) through a screw, a first baffle plate (6) is arranged at the right side of the electric telescopic rod (5), a motor (7) is locked at the left side of the bottom end of the inner cavity of the lower die (1) through a screw, a first screw (8) is arranged at the output end of the motor (7), an inner ring of a bearing is in interference fit with the top end of the outer wall of the first screw (8), an outer ring of the bearing is fixedly connected with the inner wall of the lower die (1), a worm (9) is in interference fit with the center position of the outer wall of the first screw (8), a first rectangular block (10) is in threaded connection with the upper end and the lower end of the outer wall of, the inner ring interference fit of bearing has second screw rod (11), the outer wall central point of second screw rod (11) puts interference fit and has (12) continuous with worm (9) meshing, the equal threaded connection in both ends has second rectangular block (13) around the outer wall of second screw rod (11), the inner chamber of first rectangular block (10) and second rectangular block (13) all is provided with bracing piece (14), spout (15) have all been seted up at both ends about the inner chamber of bracing piece (14), the inner chamber left side of bracing piece (14) is embedded to have slider (16), the right side of slider (16) is provided with the one end of connecting rod (17), the right side other end of connecting rod (17) extends the inner chamber of bracing piece (14) and is provided with second baffle (18).

2. The mold core guide structure for plastic molds according to claim 1, wherein: the threads at the upper end and the lower end of the outer wall of the first screw rod (8) are threads in opposite directions.

3. The mold core guide structure for plastic molds according to claim 1, wherein: the second screw (11) is positioned on the right side of the worm (9).

4. The mold core guide structure for plastic molds according to claim 1, wherein: the outer wall of the connecting rod (17) is L-shaped.

5. The mold core guide structure for plastic molds according to claim 1, wherein: the number of the second baffle plates (18) is four, and the four second baffle plates (18) are respectively positioned at the upper end and the lower end of the front side and the rear side of the first baffle plate (6).

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