A two-color injection mold for a medical ultrasound handpiece

Abstract

The application discloses a two-color injection mold for a medical ultrasonic handle, which comprises a first injection mold and a second injection mold; the first injection mold comprises a common lower mold and a first injection upper mold matched with the common lower mold; and the second injection mold comprises a common lower mold and a second injection upper mold matched with the common lower mold. The first injection mold is used to manufacture a first color product, then the first injection mold is opened, and the first color product is sleeved on an inner core of the handle. Then the common lower mold with the first color product is matched with the second injection upper mold, and after the matching, injection molding can be performed to form a two-color product.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a two-color injection mold for a medical ultrasound handpiece. Background Technology

[0002] As a core component of high-value, high-precision medical devices, medical ultrasound handpieces face extremely stringent requirements regarding their appearance quality, dimensional accuracy, assembly reliability, and biocompatibility. Traditional two-color injection molding processes for such products suffer from significant limitations in mold precision, severely impacting the molding process. Furthermore, because two-color products require two injection molding cycles, adhesion during mold opening is a common issue. Using release agents to address this problem introduces contamination risks, violates medical manufacturing standards, and results in low yield and poor product consistency.

[0003] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a two-color injection mold for a medical ultrasound handpiece, so as to solve the problems mentioned in the background art.

[0005] The technical solution of the present invention is as follows: a two-color injection mold for a medical ultrasound handpiece is provided, comprising: a first injection mold and a second injection mold; the first injection mold comprises: a common lower mold and a first upper injection mold that cooperates with the common lower mold; the second injection mold comprises: a common lower mold and a second upper injection mold that cooperates with the common lower mold.

[0006] The common lower mold includes: a lower mold body, a lower mold core mounted on the lower mold body, and a handle core mounted on the lower mold core.

[0007] The first injection mold includes: a first upper mold body, a first fixed mold core, a first movable upper left mold core, and a first movable upper right mold core respectively installed on the first upper mold body; the lower mold core, the handle inner core, the first fixed mold core, the first movable upper left mold core, and the first movable upper right mold core form a first injection molding cavity; the first upper mold body is provided with a first injection port, which communicates with the first injection molding cavity; after injection molding, a first color product is formed; the first movable upper left mold core and the first movable upper right mold core are positioned by a first slider and a first gripper joint, achieving precise cooperation between the first movable upper left mold core and the first movable upper right mold core, effectively ensuring accuracy.

[0008] The second injection mold includes: a second upper mold body, and a second fixed mold core, a second movable upper left mold core, and a second movable upper right mold core respectively installed on the second upper mold body; the lower mold core, the handle inner core, the second fixed mold core, the second movable upper left mold core, the second movable upper right mold core, and the first color product form a second injection molding cavity; the second upper mold body is provided with a second injection port, and the first injection port communicates with the second injection molding cavity; after injection molding, a two-color product is formed; the second movable upper left mold core and the second movable upper right mold core are positioned by a second slider and a second locking mechanism. Similarly, the second slider and the second locking mechanism are used for positioning to achieve precise matching between the second movable upper left mold core and the second movable upper right mold core, effectively ensuring accuracy.

[0009] In this design, the first color product is first produced using the first injection mold. Then, the first injection mold is opened, and the first color product is fitted onto the inner core of the handle. Next, the common lower mold, carrying the first color product, is closed with the second upper injection mold. After mold closing, injection molding can be performed to form a two-color product.

[0010] The lower mold core includes: a lower fixed mold core, and a lower limiting mold core disposed on the lower fixed mold core; the lower fixed mold core is provided with a mounting groove, and one end of the lower limiting mold core and the handle inner core is disposed in the mounting groove. The lower limiting mold core is used to restrict the handle inner core, and the handle inner core passes through the lower limiting mold core. The lower limiting mold core is used to limit the movement of the handle inner core.

[0011] Furthermore, the two-color injection mold for the medical ultrasound handpiece further includes: an ejector rod and a push plate connected to the ejector rod. The ejector rod passes through the lower mold body and the handpiece core and extends into the molding surface of the handpiece core. The ejector rod is used to eject the two-color product.

[0012] Furthermore, the dual-color injection mold for the medical ultrasound handpiece further includes a hydraulic cylinder, which abuts against the push plate.

[0013] Furthermore, the first fixed mold core is provided with a first flow channel and a second flow channel, the first movable upper left mold core is provided with a third flow channel, and the first movable upper right mold core is provided with a fourth flow channel. The first flow channel is connected to the third flow channel, the second flow channel is connected to the fourth flow channel, the first injection port is connected through the first flow channel and the second flow channel, and the third flow channel and the fourth flow channel are connected to the first injection cavity.

[0014] Furthermore, the first upper mold body is provided with a first left-opening inclined surface and a first right-opening inclined surface. The first movable upper left mold core mates with the first left-opening inclined surface, and the first movable upper right mold core mates with the first right-opening inclined surface. When the first injection mold opens, the first movable upper left mold core and the first movable upper right mold core will move laterally simultaneously, thereby opening up demolding space for the first color product. At the same time, since it is a lateral movement, the gate connecting the first color product will be disconnected during the movement, thereby separating the first color product from the sprue material so that it can enter the subsequent second injection molding without the need for manual trimming of the sprue material.

[0015] Furthermore, the second upper mold body is provided with a second left-opening inclined surface and a second right-opening inclined surface. The second movable upper left mold core mates with the second left-opening inclined surface, and the second movable upper right mold core mates with the second right-opening inclined surface. Similarly, when the second injection mold opens, the second movable upper left mold core and the second movable upper right mold core will move laterally simultaneously, thereby providing space for the two-color product to be demolded.

[0016] Furthermore, the second fixed mold core is provided with a fifth flow channel, and the second injection port is connected to the second injection cavity through the fifth flow channel.

[0017] Furthermore, the common lower mold also includes: a guide post and a return spring, the return spring being sleeved on the guide post, and the two ends of the return spring abutting against the push plate and the lower mold body, respectively.

[0018] Furthermore, the common lower mold also includes: a base plate, and two support plates mounted on the base plate; the push plate is disposed between the two support plates.

[0019] Using the above solution, this invention provides a two-color injection mold for a medical ultrasound handpiece. First, a first-color product is produced using a first injection mold. Then, the first injection mold is opened, and the first-color product is fitted onto the inner core of the handpiece. Next, a common lower mold, carrying the first-color product, is closed with a second upper injection mold. After mold closure, injection molding can be performed to form the two-color product. The first movable upper left mold core and the first movable upper right mold core are positioned by a first slider and a first gripper joint, achieving precise alignment between them and effectively ensuring accuracy. Similarly, the second slider and the second gripper joint are positioned to achieve precise alignment between the second movable upper left mold core and the second movable upper right mold core, effectively ensuring accuracy. This results in high-precision injection molding of the two-color product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the first injection mold of the present invention.

[0021] Figure 2 for Figure 1 A cross-sectional view of an embodiment.

[0022] Figure 3 for Figure 1 A cross-sectional view from another perspective of the embodiment.

[0023] Figure 4 for Figure 1 A schematic diagram of the structure without the first upper mold body in the embodiment.

[0024] Figure 5 for Figure 1 A schematic diagram of the structure without the first injection mold in the embodiment.

[0025] Figure 6 This is a structural diagram of the upper right mold core of the first activity.

[0026] Figure 7 This is a structural schematic diagram of the upper left mold core of the first active part.

[0027] Figure 8 This is a schematic diagram of the structure of an embodiment of the second injection mold of the present invention.

[0028] Figure 9 for Figure 8 A cross-sectional view of an embodiment.

[0029] Figure 10 for Figure 8 A cross-sectional view from another perspective of the embodiment.

[0030] Figure 11 for Figure 8 A schematic diagram of the structure without the second upper mold body in the embodiment.

[0031] Figure 12 for Figure 8 A schematic diagram of the structure without the second injection mold in the embodiment.

[0032] Figure 13 This is a structural diagram of the upper right mold core of part of the second activity.

[0033] Figure 14 A schematic diagram of the structure of the upper left mold core of the second activity. Detailed Implementation The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0034] Please see Figures 1-14 The present invention provides a two-color injection mold for a medical ultrasound handpiece, comprising: a first injection mold 10 and a second injection mold 11; the first injection mold 10 includes: a common lower mold and a first upper injection mold that cooperates with the common lower mold; the second injection mold 11 includes: a common lower mold and a second upper injection mold that cooperates with the common lower mold.

[0035] The common lower mold includes: a lower mold body 12, a lower mold core mounted on the lower mold body 12, and a handle inner core 13 mounted on the lower mold core.

[0036] The first injection mold includes: a first upper mold body 14, and a first fixed mold core 15, a first movable upper left mold core 16, and a first movable upper right mold core 17 respectively mounted on the first upper mold body 14; the lower mold core, the handle inner core 13, the first fixed mold core 15, the first movable upper left mold core 16, and the first movable upper right mold core 17 form a first injection molding cavity; the first upper mold body 14 is provided with a first injection port 18, which communicates with the first injection molding cavity; after injection molding, a first color product 19 is formed; the first movable upper left mold core 16 and the first movable upper right mold core 17 are positioned by a first slider 20 and a first gripper 21, achieving precise alignment between the first movable upper left mold core 16 and the first movable upper right mold core 17, effectively ensuring accuracy. The first slider 20 is disposed on the first movable upper left mold core 16, and the first gripper 21 is disposed on the first movable upper right mold core 17.

[0037] The second injection mold includes: a second upper mold body 22, and a second fixed mold core 23, a second movable upper left mold core 24, and a second movable upper right mold core 25 respectively mounted on the second upper mold body 22; the lower mold core, handle core 13, second fixed mold core 23, second movable upper left mold core 24, second movable upper right mold core 25, and the first color product 19 form a second injection cavity; the second upper mold body 22 is provided with a second injection port 26, and the first injection port 18 communicates with the second injection cavity; after injection molding, a two-color product 27 is formed; the second movable upper left mold core 24 and the second movable upper right mold core 25 are positioned by a second slider 28 and a second gripper 29. Similarly, the second slider 28 and the second gripper 29 are positioned to achieve precise alignment between the second movable upper left mold core 24 and the second movable upper right mold core 25, effectively ensuring accuracy. The second slider 28 is located on the second movable upper left mold core 24, and the second gripper 29 is located on the second movable upper right mold core 25. In this scheme, the first color product 19 is first produced in the first injection mold 10. Then, the first injection mold 10 is opened, and the first color product 19 is fitted onto the handle inner core 13. Then, the common lower mold, carrying the first color product 19, is closed with the second injection upper mold. After the mold is closed, injection molding can be performed to form the two-color product 27.

[0038] In this embodiment, the lower mold core includes: a lower fixed mold core 30, and a lower limiting mold core 31 disposed on the lower fixed mold core 30; the lower fixed mold core 30 is provided with a mounting groove, and one end of the lower limiting mold core 31 and the handle inner core 13 is disposed in the mounting groove. The lower limiting mold core 31 is used to restrict the handle inner core 13, and the handle inner core 13 passes through the lower limiting mold core 31. The lower limiting mold core 31 is used to limit the handle inner core 13.

[0039] In this embodiment, the two-color injection mold for a medical ultrasound handpiece further includes: an ejector rod 32 and a push plate 33 connected to the ejector rod 32. The ejector rod 32 passes through the lower mold body 12 and the handpiece inner core 13 and extends into the molding surface of the handpiece inner core 13. The ejector rod 32 is used to eject the two-color product 27.

[0040] In this embodiment, the two-color injection mold for the medical ultrasound handpiece further includes a hydraulic cylinder 34, which abuts against the push plate 33.

[0041] In this embodiment, the first fixed mold core 15 is provided with a first flow channel 35 and a second flow channel 36, the first movable upper left mold core 16 is provided with a third flow channel 37, and the first movable upper right mold core 17 is provided with a fourth flow channel 38. The first flow channel 35 is connected to the third flow channel 37, the second flow channel 36 is connected to the fourth flow channel 38, the first injection port 18 is connected through the first flow channel 35 and the second flow channel 36, and the third flow channel 37 and the fourth flow channel 38 are connected to the first injection cavity.

[0042] In this embodiment, the first upper mold body 14 is provided with a first left opening slope 39 and a first right opening slope 40. The first movable upper left mold core 16 cooperates with the first left opening slope 39, and the first movable upper right mold core 17 cooperates with the first right opening slope 40. When the first injection mold 10 opens, the first movable upper left mold core 16 and the first movable upper right mold core 17 will move laterally at the same time, thereby opening up demolding space for the first color product 19. At the same time, since it is a lateral movement, the gate connecting the first color product 19 will be disconnected during the movement, thereby separating the first color product 19 from the sprue material so that it can enter the subsequent second injection molding without the need for manual trimming of the sprue material.

[0043] In this embodiment, the second upper mold body 22 is provided with a second left opening slope 41 and a second right opening slope 42. The second movable upper left mold core 24 cooperates with the second left opening slope 41, and the second movable upper right mold core 25 cooperates with the second right opening slope 42. Similarly, when the second injection mold 11 opens, the second movable upper left mold core 24 and the second movable upper right mold core 25 will move laterally at the same time, thereby opening up space for demolding of the two-color product 27.

[0044] In this embodiment, the second fixed mold core 23 is provided with a fifth flow channel 43, and the second injection port 26 is connected to the second injection cavity through the fifth flow channel 43.

[0045] In this embodiment, the common lower mold further includes: a guide post 44 and a reset spring 45. The reset spring 45 is sleeved on the guide post 44, and the two ends of the reset spring 45 abut against the push plate 33 and the lower mold body 12, respectively.

[0046] In this embodiment, the common lower mold further includes: a base plate 46, and two support plates 47 mounted on the base plate 46; the push plate 33 is disposed between the two support plates 47.

[0047] In summary, this invention provides a two-color injection mold for a medical ultrasound handpiece. First, a first-color product is manufactured using a first injection mold. Then, the first injection mold is opened, and the first-color product is fitted onto the inner core of the handpiece. Next, a common lower mold, carrying the first-color product, is closed with a second upper injection mold. After mold closing, injection molding can be performed to form the two-color product. The first movable upper left mold core and the first movable upper right mold core are positioned by a first slider and a first gripper joint, achieving precise alignment between them and effectively ensuring accuracy. Similarly, the second slider and the second gripper joint provide precise alignment between the second movable upper left mold core and the second movable upper right mold core, also effectively ensuring accuracy. This results in high-precision injection molding of the two-color product.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A two-color injection mold for a medical ultrasound handpiece, characterized in that, include: First injection mold, second injection mold; The first injection mold includes: a common lower mold and a first injection upper mold that cooperates with the common lower mold; the second injection mold includes: a common lower mold and a second injection upper mold that cooperates with the common lower mold. The common lower mold includes: a lower mold body, a lower mold core mounted on the lower mold body, and a handle core mounted on the lower mold core; The first injection mold includes: a first upper mold body, and a first fixed mold core, a first movable upper left mold core, and a first movable upper right mold core respectively installed on the first upper mold body; the lower mold core, the handle inner core, the first fixed mold core, the first movable upper left mold core, and the first movable upper right mold core form a first injection molding cavity; the first upper mold body is provided with a first injection port, and the first injection port communicates with the first injection molding cavity; after injection molding, a first color product is formed; the first movable upper left mold core and the first movable upper right mold core are positioned by a first slider and a first gripper joint. The second injection mold includes: a second upper mold body, a second fixed mold core, a second movable upper left mold core, and a second movable upper right mold core respectively installed on the second upper mold body; the lower mold core, the handle inner core, the second fixed mold core, the second movable upper left mold core, the second movable upper right mold core, and the first color product form a second injection molding cavity; the second upper mold body is provided with a second injection port, and the first injection port is connected to the second injection molding cavity; after injection molding, a two-color product is formed; the second movable upper left mold core and the second movable upper right mold core are positioned by a second slider and a second gripper joint.

2. The two-color injection mold for a medical ultrasound handpiece according to claim 1, characterized in that, The lower mold core includes: a lower fixed mold core and a lower limiting mold core disposed on the lower fixed mold core; the lower fixed mold core is provided with a mounting groove, and one end of the lower limiting mold core and the handle inner core is disposed in the mounting groove, the lower limiting mold core is used to limit the handle inner core, and the handle inner core passes through the lower limiting mold core.

3. The two-color injection mold for a medical ultrasound handpiece according to claim 2, characterized in that, Also includes: An ejector rod and a push plate connected to the ejector rod, wherein the ejector rod passes through the lower mold body and the handle core and extends into the molding surface of the handle core.

4. The two-color injection mold for a medical ultrasound handpiece according to claim 3, characterized in that, Also includes: The hydraulic cylinder abuts against the push plate.

5. The two-color injection mold for a medical ultrasound handpiece according to claim 1, characterized in that, The first fixed mold core is provided with a first flow channel and a second flow channel, the first movable upper left mold core is provided with a third flow channel, and the first movable upper right mold core is provided with a fourth flow channel. The first flow channel is connected to the third flow channel, the second flow channel is connected to the fourth flow channel, the first injection port is connected through the first flow channel and the second flow channel, and the third flow channel and the fourth flow channel are connected to the first injection cavity.

6. The two-color injection mold for a medical ultrasound handpiece according to claim 1, characterized in that, The first upper mold body is provided with a first left opening slope and a first right opening slope. The first movable upper left mold core cooperates with the first left opening slope, and the first movable upper right mold core cooperates with the first right opening slope.

7. The two-color injection mold for a medical ultrasound handpiece according to claim 1, characterized in that, The second upper mold body is provided with a second left opening slope and a second right opening slope. The second movable upper left mold core cooperates with the second left opening slope, and the second movable upper right mold core cooperates with the second right opening slope.

8. The two-color injection mold for a medical ultrasound handpiece according to claim 1, characterized in that, The second fixed mold core is provided with a fifth flow channel, and the second injection port is connected to the second injection cavity through the fifth flow channel.

9. The two-color injection mold for a medical ultrasound handpiece according to claim 3, characterized in that, The common lower mold also includes: a guide post and a return spring. The return spring is sleeved on the guide post, and its two ends abut against the push plate and the lower mold body, respectively.

10. The two-color injection mold for a medical ultrasound handpiece according to claim 9, characterized in that, The common lower mold also includes: a base plate, and two support plates mounted on the base plate; the push plate is disposed between the two support plates.

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