CN221851049U - An injection mold for processing plastic parts of medical puncture device - Google Patents

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold for processing medical puncture plastic parts, including: an upper mold base and a lower mold base, and the lower mold base is composed of a left lower mold and a right lower mold, and a molding cavity is opened in the center of the inner cavity of the mold body; a side connecting plate, and a threaded screw is installed in the center of the inner cavity, and the surface of the threaded screw is sleeved with a first sliding block, which is connected to the upper mold base; a double-headed motor is connected with a threaded shaft, and the surface of the threaded shaft is sleeved with a second sliding block, and is connected to the left lower mold and the right lower mold. The injection mold for processing medical puncture plastic parts cools the molten plastic in the molding cavity into a medical puncture plastic part, and when the threaded screw rotates, the first sliding block drives the upper mold base to rise, the double-headed motor drives the threaded shaft to rotate, and the second sliding block drives the left lower mold and the right lower mold to separate. In this way, it is convenient to take the molded plastic part out of the molding cavity.

Description

An injection mold for processing plastic parts of medical puncture device

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold for processing plastic parts of a medical puncture device.

Background Art

Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry". Among them, injection molds are a kind of molds used to make plastic products, which are widely used in the production of plastic products. Injection molds are needed when producing and processing medical puncture plastic parts.

Common injection molds for processing medical puncture plastic parts are usually composed of structures such as an upper mold, a lower mold, a molding cavity, and a pouring system. First, the upper mold and the lower mold are connected and merged, and the molten plastic raw material is injected into the molding cavity of the upper mold and the lower mold through the pouring system, and then it is cooled and molded. Then the upper mold and the lower mold are separated, and the molded medical puncture plastic blank is taken out from the molding cavity. This is a common injection mold structure and usage for processing medical puncture plastic parts. Traditional injection molds for processing medical puncture plastic parts are not convenient for taking the molded plastic parts out of the molding cavity because the molten plastic raw material will fit tightly with the inner wall of the molding cavity after cooling and molding in the molding cavity, which causes inconvenience to the user. Some injection molds for processing medical puncture plastic parts are equipped with a movable block inside the lower mold and connected to the lifting structure, so that the movable block in the molding cavity pushes the plastic part out, which is convenient for taking materials. However, in this method, since the plastic part itself is not completely cooled during the cooling and molding process, its hardness and toughness are poor. During ejection, the plastic part itself is easily subjected to stress and breaks, resulting in the failure of the injection molding of the medical puncture plastic part and the increase of costs. Therefore, an injection mold for processing medical puncture plastic parts is proposed.

Utility Model Content

1. Technical issues to be resolved

In view of the deficiencies of the prior art, the utility model provides an injection mold for processing plastic parts of a medical puncture device to solve the above-mentioned technical problem of "plastic parts being ejected and broken".

(II) Technical solution

In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold for processing plastic parts of a medical puncture device, comprising:

A mold body, and an upper mold base and a lower mold base constituting the mold body, wherein the lower mold base is composed of a left lower mold and a right lower mold, and a molding cavity is opened at the center of the inner cavity of the mold body;

The side connecting plate is arranged on the front and back sides of the mold body, and a threaded screw is installed at the center of the inner cavity of the side connecting plate. The surface of the threaded screw is sleeved with a first sliding block and connected to the upper mold base;

The double-headed motor is arranged at the lower center of the front side connecting plate and is coaxially connected with a threaded shaft, and the surface of the threaded shaft is sleeved with a second sliding block and connected to the corresponding positions of the left lower mold and the right lower mold. After the molten plastic is cooled in the molding cavity into a medical puncture device plastic part, the threaded screw rotates, and the first sliding block drives the upper mold seat to rise, and the plastic part is partially exposed. The double-headed motor drives the threaded shaft to rotate, and the second sliding block drives the left lower mold and the right lower mold to separate, so that most of the plastic part is exposed, so as to facilitate the removal of the molded plastic part from the molding cavity and avoid forced ejection, which causes the plastic part to break.

Preferably, upper clamping plates are installed at the upper center of the front and back sides of the upper die seat, and the upper clamping plates are clamped and connected to the upper die seat and connected to the first sliding block. The first sliding block drives the upper die seat to move in the same direction through the upper clamping seat and the upper clamping plate, and the upper clamping seat and the upper clamping plate can be separated.

Preferably, a cooling groove is provided at the center of the inner cavity of the upper die base and the lower die base, and the cooling groove is designed in an S-shape as a whole, and extends outward through the inner wall of the upper die base and the lower die base. Coolant can be injected into the cooling groove to flow and absorb heat. Compared with external air cooling and water cooling, this structure can speed up the cooling speed of the molded part, and avoid the molded part not being completely cooled when the molded part is taken out, so that the hardness and toughness of the molded part do not meet the standard and breakage occurs.

Preferably, the bottom of the upper die seat is longitudinally provided with positioning columns, and the top of the lower die seat is longitudinally provided with positioning grooves corresponding to the positioning columns. The upper die seat and the lower die seat are provided with positioning columns and positioning grooves to avoid misalignment during lifting.

Preferably, lower card plates are installed on both sides of the front and back of the left lower mold and the right lower mold, and the lower card plates are connected with lower card seats and connected with the second sliding block, and the front and rear ends of the inner side surface of the left lower mold are installed with guide posts, and the front and rear ends of the inner side surface of the right lower mold are provided with guide grooves corresponding to the guide posts. The second sliding block drives the left lower mold and the right lower mold to move toward each other through the lower card seat and the lower card plate to achieve the purpose of separation, and the lower card seat and the lower card plate can be separated, so that they can be connected with different injection molds within a certain range, and drive the components to perform lifting or translational movement, which is convenient for the separation operation of taking out the parts; and the guide posts and guide grooves are used between the left lower mold and the right lower mold to avoid the phenomenon of misalignment during translation.

Preferably, a driving motor is installed on the top of the side connecting plate and is coaxially connected with the threaded screw, and a connecting seat is installed on the lower front of the side connecting plate, and the double-headed motor is slidably connected to the side connecting plate. The driving motor drives the threaded screw to rotate on the side connecting plate and adjusts the direction, and the side connecting plate is connected to the corresponding structure or position through the connecting seat. The double-headed motor can be raised and lowered on the side connecting plate and separated from the connecting structure for installation.

(III) Beneficial effects

Compared with the prior art, the utility model provides an injection mold for processing plastic parts of a medical puncture device, which has the following beneficial effects:

The injection mold for processing medical puncture device plastic parts cools the molten plastic in the molding cavity into the medical puncture device plastic part, and then the threaded screw rotates, and the first sliding block drives the upper mold base to rise, and the plastic part is partially exposed. The double-headed motor drives the threaded shaft to rotate, and the second sliding block drives the left lower mold and the right lower mold to separate, so that most of the plastic part is exposed. In this way, it is easy to take the molded plastic part out of the molding cavity, and avoid forced ejection, which causes the plastic part to break.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a schematic diagram of the right side view of the structure of the upper die base and the lower die base separated from each other in the utility model;

FIG3 is a schematic diagram of the separation structure of the left lower mold and the right lower mold of the utility model.

In the figure: 1. mold body; 2. upper mold base; 3. lower mold base; 4. left lower mold; 5. right lower mold; 6. molding cavity; 7. upper clamping plate; 8. cooling groove; 9. positioning column; 10. positioning groove; 11. guide column; 12. guide groove; 13. lower clamping plate; 14. side connecting plate; 15. threaded screw; 16. driving motor; 17. upper clamping seat; 18. connecting seat; 19. double-headed motor; 20. threaded shaft; 21. lower clamping seat.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

The utility model provides a technical solution, an injection mold for processing medical puncture device plastic parts, comprising: please refer to FIG1, a mold body 1, and an upper mold base 2 and a lower mold base 3 constituting the mold body 1, and the lower mold base 3 is composed of a left lower mold 4 and a right lower mold 5, and a molding cavity 6 is opened in the center of the inner cavity of the mold body 1;

Please refer to FIG. 2 , the side connecting plate 14 is disposed on the front and back sides of the mold body 1 , and a threaded screw 15 is installed at the center of the inner cavity of the side connecting plate 14 , and a first sliding block is sleeved on the surface of the threaded screw 15 and connected to the upper mold base 2 ;

The double-headed motor 19 is arranged at the lower center of the front side connecting plate 14 and is coaxially connected with the threaded shaft 20. The surface of the threaded shaft 20 is sleeved with a second sliding block and connected to the corresponding positions of the left lower mold 4 and the right lower mold 5. After the melted plastic is cooled in the molding cavity 6 to form a medical puncture device plastic part, the threaded screw 15 rotates, and the first sliding block drives the upper mold base 2 to rise, and the plastic part is partially exposed. The double-headed motor 19 drives the threaded shaft 20 to rotate, and the second sliding block drives the left lower mold 4 and the right lower mold 5 to separate, so that most of the plastic part is exposed, so as to facilitate the removal of the molded plastic part from the molding cavity 6 and avoid forced ejection, which causes the plastic part to break.

Please refer to Fig. 2, upper clamping plates 7 are installed at the upper center of the front and back sides of the upper die holder 2, and the upper clamping plates 7 are clamped and connected with the upper clamping seat 17 and connected with the first sliding block. The first sliding block drives the upper die holder 2 to move in the same direction through the upper clamping seat 17 and the upper clamping plate 7, and the upper clamping seat 17 and the upper clamping plate 7 can be separated.

Please refer to Figure 3. The center of the inner cavity of the upper die base 2 and the lower die base 3 is provided with a cooling groove 8, and the cooling groove 8 is designed in an S shape as a whole, and extends outward through the inner wall of the upper die base 2 and the lower die base 3. The coolant can be injected into the cooling groove 8 to flow and absorb heat. Compared with the external air cooling and water cooling, this structure can speed up the cooling speed of the molded part, and avoid the molded part not being completely cooled when the part is taken out, so that the hardness and toughness of the molded part do not meet the standard and breakage occurs. Positioning columns 9 are longitudinally installed around the bottom of the upper die base 2, and positioning grooves 10 are longitudinally opened around the top of the lower die base 3, and correspond to the positioning columns 9. The positioning columns 9 and the positioning grooves 10 are used between the upper die base 2 and the lower die base 3 to avoid misalignment during lifting. Lower clamping plates 13 are installed on both sides of the front and back of the left lower mold 4 and the right lower mold 5, and the lower clamping plates 13 are clamped and connected with lower clamping seats 21 and connected with the second sliding block. Guide pillars 11 are installed at the front and rear ends of the inner side surface of the left lower mold 4, and guide grooves 12 are opened at the front and rear ends of the inner side surface of the right lower mold 5, and correspond to the guide pillars 11. The second sliding block drives the left lower mold 4 and the right lower mold 5 to move toward each other through the lower clamping seat 21 and the lower clamping plate 13 to achieve the purpose of separation. At the same time, the lower clamping seat 21 and the lower clamping plate 13 can be separated, so that they can be connected with different injection molds within a certain range, and drive the components to perform lifting or translational movement, which is convenient for taking out and separating operations; and the guide pillars 11 and the guide grooves 12 are used between the left lower mold 4 and the right lower mold 5 to avoid misalignment during translation.

Please refer to Fig. 2, a driving motor 16 is installed on the top of the side connecting plate 14 and is coaxially connected with the threaded screw 15, and a connecting seat 18 is installed on the lower front of the side connecting plate 14, and a double-headed motor 19 is slidably connected with the side connecting plate 14. The driving motor 16 drives the threaded screw 15 to rotate on the side connecting plate 14 and adjusts the direction, and the side connecting plate 14 is connected to the corresponding structure or position through the connecting seat 18, and the double-headed motor 19 can be raised and lowered on the side connecting plate 14 and separated from the connecting structure for installation.

This solution: After the melted plastic is cooled in the molding cavity 6 to form a medical puncture plastic part, the driving motor 16 drives the threaded screw 15 to rotate on the side connecting plate 14, and the first sliding block drives the upper mold base 2 to move in the same direction through the upper clamping seat 17 and the upper clamping plate 7, and the plastic part is partially exposed. The double-headed motor 19 drives the threaded shaft 20 to rotate, and the second sliding block drives the left lower mold 4 and the right lower mold 5 to separate. The second sliding block drives the left lower mold 4 and the right lower mold 5 to move toward each other through the lower clamping seat 21 and the lower clamping plate 13 to achieve the purpose of separation. At the same time, the lower clamping seat 21 and the lower clamping plate 13 can be separated. The coolant can be injected into the cooling tank 8 to flow and absorb heat.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims (6)

1. An injection mold for processing plastic parts of a medical puncture device, characterized by comprising: A mold body (1), and an upper mold base (2) and a lower mold base (3) constituting the mold body (1), wherein the lower mold base (3) is composed of a left lower mold (4) and a right lower mold (5), and a molding cavity (6) is provided at the center of the inner cavity of the mold body (1); A side connecting plate (14) is arranged on the front and back sides of the mold body (1), and a threaded screw (15) is installed at the center of the inner cavity of the side connecting plate (14). A first sliding block is sleeved on the surface of the threaded screw (15) and is connected to the upper mold base (2); The double-headed motor (19) is arranged at the lower center of the front side connecting plate (14) and is coaxially connected with a threaded shaft (20). The surface of the threaded shaft (20) is sleeved with a second sliding block and is connected to the corresponding positions of the left lower mold (4) and the right lower mold (5). 2. An injection mold for processing medical puncture device plastic parts according to claim 1, characterized in that: an upper clamping plate (7) is installed at the upper center of the front and back sides of the upper mold base (2), and the upper clamping plate (7) is clamped and connected to the upper clamping seat (17) and connected to the first sliding block. 3. An injection mold for processing medical puncture device plastic parts according to claim 1, characterized in that: a cooling groove (8) is opened in the center of the inner cavity of the upper mold base (2) and the lower mold base (3), and the cooling groove (8) is designed as an S-shape as a whole, and extends outward through the inner walls of the upper mold base (2) and the lower mold base (3). 4. An injection mold for processing medical puncture device plastic parts according to claim 1, characterized in that: positioning columns (9) are longitudinally installed around the bottom of the upper mold base (2), and positioning grooves (10) are longitudinally opened around the top of the lower mold base (3) and correspond to the positioning columns (9). 5. An injection mold for processing medical puncture device plastic parts according to claim 1, characterized in that: lower clamping plates (13) are installed on both the front and back sides of the left lower mold (4) and the right lower mold (5), and the lower clamping plates (13) are connected to the lower clamping seat (21) and connected to the second sliding block, the front and rear ends of the inner side surface of the left lower mold (4) are installed with guide columns (11), and the front and rear ends of the inner side surface of the right lower mold (5) are opened with guide grooves (12) corresponding to the guide columns (11). 6. An injection mold for processing plastic parts of a medical puncture device according to claim 1, characterized in that a driving motor (16) is installed on the top of the side connecting plate (14) and is coaxially connected to the threaded screw (15), and a connecting seat (18) is installed on the lower front part of the side connecting plate (14), and the double-headed motor (19) is slidably connected to the side connecting plate (14).