Injection mold for transparent product of medical instrument

Abstract

The utility model discloses a medical instrument transparent product injection mold, and relates to the field of medical instruments, the medical instrument transparent product injection mold comprises a core-pulling slide rod assembly, a core-pulling slide block assembly, a mold inclined guide column and a driving motor; a core-pulling sliding rod is arranged on the first core-pulling sliding block assembly, and the core-pulling sliding rod is sleeved with a minimally invasive product during injection molding; the core-pulling sliding rod assembly is arranged on the second core-pulling sliding block assembly in a sliding mode, inclined holes which are obliquely and downwards through are formed in the core-pulling sliding rod assembly and the core-pulling sliding block assembly, and the mold inclined guide columns penetrate into the inclined holes. A shaft rod of the driving motor is connected to the core-pulling sliding block assembly, and the core-pulling sliding rod is controlled to demold the minimally invasive product.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an injection mold for a transparent medical device product. Background Art

[0002] With the continuous updating and iteration of technology in the medical field and the increasing demand for minimally invasive surgery, the demand for transparent medical products is also getting higher and higher. The mold produced in this application is a circular transparent part, and a camera needs to be placed inside to assist in minimally invasive surgery.

[0003] The circular transparent parts used for minimally invasive surgery have very high requirements for product transparency and roundness. The internal taper of the product is small, which makes production difficult, resulting in a high scrap rate in actual production. There are generally two types of molds for related technical processes. The first type of mold is to make front and back molds in the long direction of the product. In this case, the mold is thicker, the production machine is larger, and more sprue waste is generated. In addition, due to the small taper of the inner hole of the product, it is easy to cause product ejection deformation, scrap, and other defects, and the production cost is high. The second type of mold is to make a slider for the inner hole in the long direction of the product. This method makes the production machine smaller, but due to the small taper of the inner hole of the product, the product is prone to sticking to the slider due to the large clamping force during production, resulting in product deformation, strain, and other defects, which cannot meet the requirements. Utility Model Content

[0004] This application provides a transparent medical device injection mold that solves the problem of high product scrap rate caused by deformation after mold production. The transparent medical device injection mold includes a core-pulling slide assembly, a core-pulling slider assembly, a mold inclined guide column, and a drive motor; the core-pulling slide assembly is provided with a core-pulling slide, which is sleeved on the core-pulling slide during minimally invasive product injection molding;

[0005] The core-pulling slide rod assembly is slidably arranged on the core-pulling slider assembly, and an inclined hole obliquely penetrating downward is opened on the core-pulling slide rod assembly and the core-pulling slider assembly, and the mold inclined guide column passes through the inclined hole;

[0006] The shaft of the driving motor is connected to the core-pulling slider assembly to control the core-pulling slider to demould the minimally invasive product.

[0007] Specifically, the core-pulling slide bar assembly includes the core-pulling slide bar and the slide bar mounting seat, and the core-pulling slider assembly includes the core-pulling slider and the L-shaped slider base;

[0008] The slide rod mounting seat is slidably arranged on the slider base, the core-pulling slide rod is installed on the slide rod mounting seat, and passes through the side wall of the slider base and the core-pulling slide.

[0009] Specifically, at least one pair of core-pulling slide bars is provided on the slide bar mounting seat and passes through the side wall of the slider base.

[0010] Specifically, a groove is provided on the side wall, and a protrusion matching the groove is provided on the core-pulling slider.

[0011] Specifically, when the mold is closed, the protrusion on the core-pulling slider fits into the groove on the side wall; when the mold is closed, the protrusion is separated from the groove.

[0012] Specifically, the inclined holes include circular inclined holes and linear inclined holes, wherein the linear inclined holes are provided on the slider base, and the circular inclined holes are provided on the slide bar mounting seat.

[0013] Specifically, a sink groove is provided on the slide rod mounting seat, a mounting block is provided in the sink groove, and the core-pulling slide rod passes through the mounting block and is fixed to the bottom wall of the sink groove.

[0014] Specifically, convex strips are provided on both sides of the slider base, and the slide rod mounting seat is mounted on the convex strips and slides.

[0015] Specifically, a rectangular slot is provided at the connection between the slide bar mounting seat and the side wall. The rectangular slot is located at the end side of the slide bar mounting seat and the side wall. A limiting post is provided in the rectangular slot.

[0016] Specifically, a limit block is provided on the slider base close to the driving motor, and the height of the limit block is greater than the height of the slide bar mounting base from the ground.

[0017] The beneficial effects of the technical solution provided by the embodiments of the present application include at least the following: when using multiple core pulling operations with a slide bar and a slider, the slider in the second core pulling process serves as both a core pulling mechanism and a product fixing mechanism, allowing the slide bar to be separated from the product, thereby reducing product deformation, strain, and other defects, improving product qualification rates, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an injection mold for a transparent medical device product provided in an embodiment of the present application;

[0019] Figure 2 This is an exploded diagram of an injection mold for a transparent medical device product;

[0020] Figure 3 This is a schematic diagram of the structure when a small taper inner hole is generated by driving an inclined guide column;

[0021] Figure 4 It is a schematic diagram of the slider assembly and the slide rod assembly during the core pulling and demoulding stage;

[0022] Figure 5 It is a structural diagram of the core pulling slider;

[0023] Figure 6 This is a detailed picture of the slider base.

[0024] Figure markings: core-pulling slide assembly-10, core-pulling slide-11, slide mounting seat-12, sink groove-121, mounting block-122, core-pulling slider assembly-20, core-pulling slider-21, slider base-22, side wall-221, groove-222, ridge-223, inclined guide column-30, drive motor-40, minimally invasive product-50, inclined hole-60, circular inclined hole-61, linear inclined hole-62. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0026] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0027] This application aims to optimize the second type of mold in the background technology. Because the inner taper of the product is small, the product is easy to stick to the slider, resulting in poor core pulling. This application modifies the slider structure to enable multiple core pulling to achieve the mold opening and demolding process.

[0028] Figure 1 : This is a structural schematic diagram of the injection mold for a transparent medical device product provided in an embodiment of the present application. The circular transparent minimally invasive product 50 mentioned in the embodiment of the present application is a transparent tubular structure, and a camera needs to be placed inside. The injection mold for a transparent medical device product includes a core-pulling slide assembly 10, a core-pulling slider assembly 20, a mold oblique guide column 30, a drive motor 40 and a circular transparent minimally invasive product 50. A core-pulling slide assembly 10 is provided with a core-pulling slide 11, and the minimally invasive product 50 is sleeved on the core-pulling slide 11 during injection molding. The core-pulling slide 11 is a slide component that is pressed together to produce the transparent minimally invasive product 50. The core-pulling slide assembly 10 is slidably arranged on the core-pulling slider assembly 20. An oblique hole 60 that runs obliquely downward is provided on the core-pulling slide assembly 10 and the core-pulling slider assembly 20, and the mold oblique guide column 30 passes through the oblique hole 60. The shaft of the drive motor 40 is connected to the core-pulling slider assembly 20 to control the core-pulling slide 11 to demould the minimally invasive product 50.

[0029] See also Figure 1 and Figure 2As shown, the core-pulling slide assembly 10 specifically includes a core-pulling slide 11 and a slide mounting base 12, while the core-pulling slider assembly 20 includes a core-pulling slider 21 and an L-shaped slider base 22. Each slider and slide assembly utilizes a dual structure consisting of a sliding portion and a base. The slider mounting base 12 slides onto the slider base 22, and the core-pulling slide 11 is mounted on the slider mounting base 12 and extends through the sidewall 221 of the L-shaped slider base 22 and the core-pulling slider 21.

[0030] In a possible embodiment, at least one pair of core-pulling slide bars 11 is provided on the slide bar mounting seat 12 and passes through the side wall 221 of the slider base 22. In this way, dual-path mold production can be achieved. Figure 1 and Figure 2 The figure shows that one of the core-pulling slides 11 is demolded and the other is not demolded. In this solution, the slider base 22 is designed as an L-shaped structure, in which a groove 222 is provided on the side wall 221 of the vertical part. The groove 222 faces the side of the minimally invasive product 50, and the core-pulling slider 21 is provided with a protrusion 211 that matches the groove 222. When the mold is closed, the protrusion 211 on the core-pulling slider 21 fits into the groove 222 on the side wall 221; when the mold is closed, the protrusion 211 is separated from the groove 222, that is, the core-pulling slider 21 is separated from the slider base 22.

[0031] The purpose of the inclined holes 60 is to allow the mold to be demolded in two steps. These holes include a circular and linear hole 61. The linear hole 61 is located on the slider base 22, while the circular hole 61 is located on the slider mounting base 12. During the first core-pulling operation, the slider opens the mold, driving the inclined guide pin 30 deep into the linear and circular holes 62 and 61, creating only a slightly tapered inner hole in the product. The remaining product is ejected by the second core-pulling operation.

[0032] Figure 3 This is a schematic diagram of the structure when a small taper inner hole is generated by driving an inclined guide column for the first time. Figure 4 This is a schematic diagram of the slider assembly and the slide rod assembly during the second core pulling and demoulding stage. When the small tapered inner hole is generated for the first time by the inclined guide column drive, the inclined guide column 30 and the slide rod mounting seat 12 are relatively stationary, while the slider base 22 can move within a certain length range due to the linear inclined hole 61. During the second core pulling and demoulding stage, the core pulling slider is in a fixed state and has a blocking effect on the product. The core pulling slide rod opens the mold to the inner hole of the product and has no clamping force. At this time, the slider base 22 and the slide rod mounting seat 12 are locked by the inclined guide column 30, and the core pulling slide rod 11 and the slide rod mounting seat 12 are fixedly connected. Therefore, when the driving click 40 is driven, the slider base 22 can be stretched back, thereby pulling the core pulling slide rod 11 away from the core pulling slider 21. Of course, when the mold is closed, the drive motor drives the two sliders to close the mold.

[0033] See also Figure 2and Figure 5 As shown, a groove 121 is provided on the slide bar mounting seat 12, and a mounting block 122 is provided in the groove 121. The core-pulling slide bar 11 passes through the mounting block 122 and is fixed to the bottom wall of the groove 121. This structure can efficiently install the slide bar mounting seat 12 and the core-pulling slide bar 11, and is simple to assemble. Raised strips 223 are provided on both sides of the slider base 22, and the slide bar mounting seat 12 is mounted on the raised strips 223 and slides. A rectangular slot 24 is provided at the connection between the slide bar mounting seat 12 and the side wall 221. The rectangular slot is located at the end side of the slide bar mounting seat 12 and the side wall 221, and a limit post 24 is provided in the rectangular slot 24. The limit post 23 and the rectangular clip or slot 24 interlock with each other to perform a limit setting. Specifically, the limit post can be set on the slide bar mounting seat or on the side wall of the slider base to play a buffering role. In addition, the present application also provides a limit block 224 on the slider base 22 near the drive motor 40. The limit block 224 is higher than the ground level of the slide rod mounting base 12. This ensures that the core-pulling slide rod 11 will not detach from the slider base 22 when sliding.

[0034] In addition, in order to further buffer and reduce the impact force, a buffer member 25 can be provided at the convex position on both sides of the slider base, and the buffer member 25 and the slide rod mounting seat 12 are installed and slid synchronously. Figure 3 As shown, a rectangular slot 24 is further formed at the contact portion of the buffer member 25 , the slide rod mounting seat 12 and the side wall 221 , so that the buffer member 25 can further provide buffering when the film is closed.

[0035] In summary, the present invention uses multiple slide rods and sliders to pull the core. The slider in the second core pulling process serves as both a core pulling structure and a product fixing structure, allowing the core pulling slide rod to be separated from the product, thereby reducing product deformation, strain, and other defects, improving product qualification rate, and reducing costs.

[0036] The above describes the preferred embodiments of the present invention; it should be understood that the present invention is not limited to the above-mentioned specific implementation methods, and the equipment and structures that are not described in detail should be understood to be implemented in a common manner in the field; any technician familiar with the field can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention; therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A transparent injection mold for medical devices, characterized in that: It comprises a core-pulling slide bar assembly (10), a core-pulling slider assembly (20), a mold inclined guide column (30), and a driving motor (40); a core-pulling slide bar (11) is arranged on the core-pulling slide bar assembly (10), and a minimally invasive product (50) is sleeved on the core-pulling slide bar (11) during injection molding; The core-pulling slide bar assembly (10) is slidably arranged on the core-pulling slider assembly (20), and an inclined hole (60) obliquely penetrating downward is provided on the core-pulling slide bar assembly (10) and the core-pulling slider assembly (20), and the mold inclined guide column (30) passes through the inclined hole (60); The shaft of the driving motor (40) is connected to the core-pulling slider assembly (20) to control the core-pulling slider (11) to demould the minimally invasive product (50).

2. The transparent product injection mold for medical devices according to claim 1, characterized in that: The core-pulling slide bar assembly (10) comprises the core-pulling slide bar (11) and a slide bar mounting seat (12); the core-pulling slider assembly (20) comprises a core-pulling slider (21) and an L-shaped slider base (22); The slide rod mounting seat (12) is slidably arranged on the slider base (22); the core-pulling slide rod (11) is mounted on the slide rod mounting seat (12) and passes through the side wall (221) of the slider base (22) and the core-pulling slide rod (21).

3. The transparent product injection mold for medical devices according to claim 2, characterized in that: At least one pair of core-pulling slide bars (11) is arranged on the slide bar mounting seat (12) and passes through the side wall (221) of the slider base (22).

4. The transparent product injection mold for medical devices according to claim 2, characterized in that: The side wall (221) is provided with a groove (222), and the core-pulling slider (21) is provided with a protrusion (211) matching the groove (222).

5. The transparent product injection mold for medical devices according to claim 4, characterized in that: When the mold is closed, the protrusion (211) on the core-pulling slider (21) fits into the groove (222) on the side wall (221); when the mold is closed, the protrusion (211) is separated from the groove (222).

6. The transparent product injection mold for medical devices according to claim 2, characterized in that: The inclined hole (60) comprises a circular inclined hole (61) and a linear inclined hole (62), wherein the linear inclined hole (62) is opened on the slider base (22), and the circular inclined hole (61) is opened on the slide rod mounting seat (12).

7. The transparent product injection mold for medical devices according to claim 3, characterized in that: A recessed groove (121) is provided on the slide rod mounting seat (12), a mounting block (122) is arranged in the recessed groove (121), and the core-pulling slide rod (11) passes through the mounting block (122) and is fixed to the bottom wall of the recessed groove (121).

8. The transparent product injection mold for medical devices according to claim 7, characterized in that: Raised strips (223) are provided on both sides of the slider base (22), and the slide bar mounting seat (12) is mounted on the raised strips (223) for sliding movement.

9. The transparent product injection mold for medical devices according to claim 2, characterized in that: A rectangular slot (24) is provided at the connection between the slide bar mounting seat (12) and the side wall (221), the rectangular slot is located at the end side of the slide bar mounting seat (12) and the side wall (221), and a limit clamping column (23) is provided in the rectangular slot (24).

10. The transparent product injection mold for medical devices according to claim 9, characterized in that: A limit block (224) is provided on the slider base (22) at a side close to the drive motor (40), and the height of the limit block (224) is greater than the height of the slide bar mounting seat (12) from the ground.

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