Rubber coating injection mold for metal piece with connecting wire

Abstract

The utility model relates to the technical field of injection molds, and discloses a metal piece rubber coating injection mold with a connecting wire, which comprises a front mold core plate and a rear mold core plate, the front mold core plate and the rear mold core plate are respectively and fixedly arranged on a front mold seat and a rear mold seat, a rubber coating forming area is arranged on the front mold core plate, a mounting groove is arranged on the rubber coating forming area, and the connecting wire is arranged in the mounting groove. A mounting groove is formed in the rear mold core plate, an insert hole is formed in the bottom wall of the mounting groove, an insert is detachably mounted in the insert hole, a front mold cavity is formed in the upper end of the insert, a rear mold cavity is formed in the rear mold core plate, and the appearance of a forming cavity formed by combining the front mold cavity and the rear mold cavity is consistent with that of a rubber coating part of a metal part; an L-shaped mounting seat is detachably mounted in the mounting groove, and the horizontal edge and the vertical edge of the L-shaped mounting seat are in contact with the two side walls of the insert; according to the rubber coating injection mold for the metal piece with the connecting wire, provided by the utility model, the problems that a wiring harness is easy to crush and a metal piece is easy to crush in an existing mold are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a metal part encapsulated injection mold with a connecting line. Background Art

[0002] Metal hook needles, bipolar electric hook forceps and bipolar electrocoagulation forceps are used in many types of surgeries, mostly for delicate minimally invasive surgeries, such as brain surgery, otolaryngology, gynecology and urology. This type of product is relatively small, and requires rubber coating on metal hook needles, electric hook forceps or electrocoagulation forceps with connecting wires. Conventional mold design and injection molding products have the following disadvantages: the mold is easy to crush and break the wire harness, the metal parts are crushed, the product cannot meet the use requirements, and the injection molding qualification rate is low. Utility Model Content

[0003] The utility model aims to provide a metal part overmolding injection mold with a connecting line, so as to solve at least one of the above problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A metal part rubber-coated injection mold with a connecting line comprises a front mold core plate and a rear mold core plate, the front mold core plate and the rear mold core plate are respectively fixedly mounted on the front mold base and the rear mold base, the front mold core plate is provided with a rubber-coated molding area, the rubber-coated molding area is provided with a mounting groove, the bottom wall of the mounting groove is provided with an insert hole, an insert is detachably mounted in the insert hole, the upper end of the insert is provided with a front mold cavity, the rear mold core plate is provided with a rear mold cavity, the shape of the molding cavity after the front mold cavity and the rear mold cavity are combined is consistent with the shape of the rubber-coated part of the metal part; an L-shaped mounting seat is detachably mounted in the mounting groove, the horizontal side and the vertical side of the L-shaped mounting seat are in contact with the two side walls of the insert, the L-shaped mounting seat is provided with a metal part positioning groove and a wire harness lead-out groove, the extension direction of the metal part positioning groove is perpendicular to the extension direction of the wire harness lead-out groove, a side of the insert close to the vertical side of the L-shaped mounting seat is provided with a limiting groove connected with the metal part positioning groove, and the L-shaped mounting seat is also provided with a wire harness lead-out channel.

[0006] In the present technical solution, since an insert hole is provided on the bottom wall of the mounting groove, an insert is detachably installed in the insert hole, and an L-shaped mounting seat is detachably installed in the mounting groove, the metal part can be first installed on the insert, and the wiring harness connected to the metal part can be positioned on the L-shaped mounting seat. The design of the detachable insert and the L-shaped mounting seat can provide convenience for the accurate positioning and installation of the metal part and the wiring harness; since the horizontal side and the vertical side of the L-shaped mounting seat are in contact with the two side walls of the insert, it is convenient to continuously lead the metal part and the wiring harness from the front mold cavity to the L-shaped mounting seat respectively. , since the L-shaped mounting seat is provided with a metal part positioning groove and a wire harness lead-out groove, which are used to position and place the metal part and the wire harness respectively, the extension direction of the metal part positioning groove is perpendicular to the extension direction of the wire harness lead-out groove, which can ensure that the extension directions of the metal part and the wire harness of the molded product are in a mutually perpendicular state, and the insert is provided with a limiting groove connected to the metal part positioning groove on one side close to the vertical side of the L-shaped mounting seat, and the limiting groove matches the shape of the metal part. The L-shaped mounting seat is also provided with a wire harness lead-out channel, which can better accommodate longer wire harnesses. In summary, the technical solution can not only prevent metal parts or wire harnesses from being crushed, but also provide convenience for the installation and positioning of metal parts and wire harnesses through the specific structural design of the detachable insert and the L-shaped mounting seat. It solves the problem that the wire harness is easily crushed and the metal parts are easily crushed in the existing mold, and the injection molding qualification rate is greatly improved.

[0007] Furthermore, in order to better realize the positioning and installation of the metal parts, while minimizing the contact between the side walls and the metal parts and reducing the extrusion damage to the outer walls of the metal parts, the metal part positioning groove includes a first U-shaped limiting portion, a second U-shaped limiting portion and an end limiting portion arranged in sequence, and there are hollow portions between the first U-shaped limiting portion and the second U-shaped limiting portion and between the second U-shaped limiting portion and the end limiting portion, and the hollow portions have no contact surface with the outer wall of the metal part.

[0008] Furthermore, in order to improve the molding efficiency of the same injection molded product of the mold, the front mold core plate is symmetrically provided with a rubber encapsulation molding area.

[0009] Furthermore, in order to make the best use of the space on the mold, a set of molds can be used to mold a variety of injection molded products. The front mold plate is also provided with a plastic part molding area, and the plastic part molding area is provided with a front plastic part cavity. The rear mold plate is provided with a rear plastic part cavity at a corresponding position. The shape of the molding cavity formed by the combination of the front plastic part cavity and the rear plastic part cavity is consistent with the shape of the plastic part to be molded.

[0010] Furthermore, in order to realize the molding of different injection molded products, a main injection channel is provided on the front mold plate, and the main injection channel is located between the two overmolding areas. The left and right sides of the upper end of the main injection channel are symmetrically provided with first branch channels, and the first branch channels are respectively connected to the two front mold cavities. The left and right sides of the lower end of the main injection channel are symmetrically provided with second branch channels, and the second branch channels are respectively connected to the two front plastic part cavities.

[0011] Furthermore, in order to switch the injection channel as needed, a valve is provided in the middle of the main injection channel.

[0012] Furthermore, in order to be able to demold the molded product, a push rod is provided on the front mold base, and the push rod extends into the insert hole. The push rod and the insert are vertically slidably matched, and one end of the push rod that passes through the front mold base is connected to a lifting drive mechanism that drives the push rod to rise and fall.

[0013] Furthermore, in order to better realize the installation of the front mold plate and the insert hole, a mold groove is provided on the front mold base, the front mold plate is fixedly installed in the mold groove, the insert hole is a through hole passing through the front mold plate, and the inner bottom wall of the mold groove supports the lower end of the insert.

[0014] Furthermore, in order to form a channel in the injection molded product according to the specific shape of the injection molded product, an extension groove is provided on the front mold plate, and the extension direction of the extension groove is perpendicular to the extension direction of the metal part positioning groove. The extension groove is located on the opposite side of the wire harness lead-out groove, and a guide column is provided in the extension groove, and the free end of the guide column cooperates with the positioning groove on the front mold cavity.

[0015] Furthermore, in order to better realize the state switching of the guide column, the front end of the guide column is located in the front mold cavity and belongs to the injection state, and the front end of the guide column exits the front mold cavity and belongs to the exit state, and the end of the guide column extending out of the front mold plate is connected to a telescopic driving mechanism that drives the guide column to switch between the injection state and the exit state.

[0016] The beneficial effects of the utility model are as follows: according to the technical scheme, since an insert hole is provided on the bottom wall of the installation groove, an insert is detachably installed in the insert hole, and an L-shaped mounting seat is detachably installed in the installation groove, the metal part can be installed on the insert first, and the wiring harness connected to the metal part can be positioned on the L-shaped mounting seat. The design of the detachable insert and the L-shaped mounting seat can provide convenience for the accurate positioning and installation of the metal part and the wiring harness; since the horizontal side and the vertical side of the L-shaped mounting seat are in contact with the two side walls of the insert, it is convenient to continuously lead the metal part and the wiring harness out of the front mold cavity respectively. As for the L-shaped mounting seat, since the L-shaped mounting seat is provided with a metal part positioning groove and a wire harness lead-out groove, which are used to position and place the metal part and the wire harness respectively, the extension direction of the metal part positioning groove is perpendicular to the extension direction of the wire harness lead-out groove, which can ensure that the extension directions of the metal part and the wire harness of the molded product are in a mutually perpendicular state. The insert is provided with a limiting groove connected to the metal part positioning groove on one side close to the vertical side of the L-shaped mounting seat, and the limiting groove matches the shape of the metal part. The L-shaped mounting seat is also provided with a wire harness lead-out channel, which can better accommodate longer wire harnesses. In summary, the technical solution can not only prevent metal parts or wire harnesses from being crushed, but also provide convenience for the installation and positioning of metal parts and wire harnesses through the specific structural design of the detachable insert and the L-shaped mounting seat. It solves the problem that the wire harness is easily crushed and the metal parts are easily crushed in the existing mold, and the injection molding qualification rate is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the front mold core plate and the front mold base in the utility model;

[0018] Figure 2 It is a structural schematic diagram of the front mold core plate in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the insert and the L-shaped mounting seat in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the rear mold core plate and the rear mold base in the utility model.

[0021] In the figure: front mold plate 1; rear mold plate 2; front mold base 3; rear mold base 4; insert hole 5; insert 6; front mold cavity 7; rear mold cavity 8; metal part rubber coating part 9; L-shaped mounting seat 10; horizontal edge 11; vertical edge 12; metal part positioning groove 13; first U-shaped limiting part 13.1; second U-shaped limiting part 13.2; end limiting part 13.3; hollow part 13.4; wire harness lead-out groove 14; limiting groove 15; wire harness lead-out channel 16; mounting groove 17; metal part 18; front plastic part cavity 19; rear plastic part cavity 20; main injection channel 21; first branch channel 22; second branch channel 23; valve 24; ejector rod 25; extension groove 27; guide column 28; positioning groove 29; telescopic drive mechanism 30; wire harness 31. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0023] Embodiment 1:

[0024] like Figure 1-Figure 4 As shown, this embodiment provides a metal part rubber-coated injection mold with a connecting line, including a front mold core plate 1 and a rear mold core plate 2, the front mold core plate 1 and the rear mold core plate 2 are respectively fixedly mounted on a front mold base 3 and a rear mold base 4, the front mold core plate 1 is provided with a rubber-coated molding area, the rubber-coated molding area is provided with a mounting groove 17, the bottom wall of the mounting groove 17 is provided with an insert hole 5, an insert 6 is detachably mounted in the insert hole 5, a front mold cavity 7 is provided at the upper end of the insert 6, a rear mold cavity 8 is provided on the rear mold core plate 2, and the shape of the molding cavity after the front mold cavity 7 and the rear mold cavity 8 are combined is similar to the metal mold cavity 11. The outer shape of the rubber-wrapped portion 9 of the insert is consistent; an L-shaped mounting seat 10 is detachably installed in the mounting groove 17, and the horizontal side 11 and the vertical side 12 of the L-shaped mounting seat 10 are in contact with the two side walls of the insert 6. The L-shaped mounting seat 10 is provided with a metal part positioning groove 13 and a wire harness lead-out groove 14, and the extension direction of the metal part positioning groove 13 is perpendicular to the extension direction of the wire harness lead-out groove 14. A limiting groove 15 connected to the metal part positioning groove 13 is provided on one side of the insert 6 close to the vertical side 12 of the L-shaped mounting seat 10, and a wire harness lead-out channel 16 is also provided on the L-shaped mounting seat 10.

[0025] In the present technical solution, since an insert hole 5 is provided on the bottom wall of the mounting groove 17, an insert 6 is detachably installed in the insert hole 5, and an L-shaped mounting seat 10 is detachably installed in the mounting groove 17, the metal part 18 can be installed on the insert 6 first, and the wiring harness 31 connected to the metal part 18 can be positioned on the L-shaped mounting seat 10. The design of the detachable insert 6 and the L-shaped mounting seat 10 can provide convenience for the accurate positioning and installation of the metal part 18 and the wiring harness 31; since the horizontal side 11 and the vertical side 12 of the L-shaped mounting seat 10 are in contact with the two side walls of the insert 6, it is convenient to continuously lead the metal part 18 and the wiring harness 31 from the front mold cavity 7 to the L-shaped mounting seat 10, respectively. The seat 10, since the L-shaped mounting seat 10 is provided with a metal part positioning groove 13 and a wire harness lead-out groove 14, which are used to position and place the metal part 18 and the wire harness 31 respectively, the extension direction of the metal part positioning groove 13 is perpendicular to the extension direction of the wire harness lead-out groove 14, which can ensure that the extension directions of the metal part 18 and the wire harness 31 of the molded product are in a mutually perpendicular state, and the side of the insert 6 close to the vertical side 12 of the L-shaped mounting seat 10 is provided with a limiting groove 15 connected to the metal part positioning groove 13, and the limiting groove 15 matches the shape of the metal part 18. The L-shaped mounting seat 10 is also provided with a wire harness lead-out channel 16, which can better accommodate the longer wire harness 31. In summary, the technical solution can not only prevent the metal part 18 or the wire harness 31 from being crushed, but also provide convenience for the installation and positioning of the metal part 18 and the wire harness 31 through the specific structural design of the detachable insert 6 and the L-shaped mounting seat 10. The problem that the wire harness 31 of the existing mold is easily crushed and the metal parts are easily crushed is solved, and the injection molding qualified rate is greatly improved.

[0026] Embodiment 2:

[0027] This embodiment is optimized based on the above-mentioned embodiment 1.

[0028] In order to better realize the positioning and installation of the metal component 18, and at the same time reduce the contact between the side wall and the metal component 18 as much as possible, and reduce the extrusion damage to the outer wall of the metal component 18, the metal component positioning groove 13 includes a first U-shaped limiting portion 13.1, a second U-shaped limiting portion 13.2 and an end limiting portion 13.3 arranged in sequence, and there is a hollow portion 13.4 between the first U-shaped limiting portion 13.1 and the second U-shaped limiting portion 13.2 and between the second U-shaped limiting portion 13.2 and the end limiting portion 13.3, and there is no contact surface between the hollow portion 13.4 and the outer wall of the metal component 18.

[0029] Embodiment 3:

[0030] This embodiment is optimized based on the above-mentioned embodiment 1.

[0031] In order to improve the molding efficiency of the same injection molded product, the front mold plate 1 is symmetrically provided with a rubber-encapsulated molding area.

[0032] Embodiment 4:

[0033] This embodiment is optimized based on the above-mentioned embodiment 3.

[0034] In order to make the best use of the space on the mold and to enable a set of molds to be used for molding a variety of injection molded products, a plastic part molding area is also provided on the front mold plate 1, and a front plastic part cavity 19 is provided in the plastic part molding area. A rear plastic part cavity 20 is provided at a corresponding position on the rear mold plate 2. The shape of the molding cavity formed by the combination of the front plastic part cavity 19 and the rear plastic part cavity 20 is consistent with the shape of the plastic part to be molded.

[0035] Embodiment 5:

[0036] This embodiment is optimized based on the above-mentioned embodiment 4.

[0037] In order to realize the molding of different injection molded products, a main injection channel 21 is provided on the front mold plate 1, and the main injection channel 21 is located between the two overmolding areas. The left and right sides of the upper end of the main injection channel 21 are symmetrically provided with first branch channels 22, and the first branch channels 22 are respectively connected to the two front mold cavities 7, and the left and right sides of the lower end of the main injection channel 21 are symmetrically provided with second branch channels 23, and the second branch channels 23 are respectively connected to the two front plastic part cavities 19.

[0038] Embodiment 6:

[0039] This embodiment is optimized based on the above-mentioned embodiment 5.

[0040] In order to switch the injection channel as needed, a valve 24 is provided in the middle of the main injection channel 21 .

[0041] Embodiment 7:

[0042] This embodiment is optimized based on the above-mentioned embodiment 1.

[0043] In order to demold the molded product, a push rod 25 is provided on the front mold base 3. The push rod 25 extends into the insert hole 5. The push rod 25 and the insert 6 are vertically slidably matched. One end of the push rod 25 that passes through the front mold base 3 is connected to a lifting drive mechanism that drives the push rod 25 to rise and fall.

[0044] Embodiment 8:

[0045] This embodiment is optimized based on the above-mentioned embodiment 7.

[0046] In order to better realize the installation of the front mold plate 1 and the insert hole 5, a mold groove is provided on the front mold base 3, the front mold plate 1 is fixedly installed in the mold groove, the insert hole 5 is a through hole passing through the front mold plate 1, and the inner bottom wall of the mold groove supports the lower end of the insert 6.

[0047] Embodiment 9:

[0048] This embodiment is optimized based on the above-mentioned embodiment 1.

[0049] In order to form a channel in the injection molded product according to the specific shape of the injection molded product, an extension groove 27 is provided on the front mold plate 1. The extension direction of the extension groove 27 is perpendicular to the extension direction of the metal part positioning groove 13. The extension groove 27 is located on the opposite side of the wire harness lead-out groove 14. A guide column 28 is provided in the extension groove 27. The free end of the guide column 28 cooperates with the positioning groove 29 on the front mold cavity 7.

[0050] Embodiment 10:

[0051] This embodiment is optimized based on the above-mentioned embodiment 9.

[0052] In order to better realize the state switching of the guide column 28, the front end of the guide column 28 is located in the front mold cavity 7 and belongs to the injection molding state, and the front end of the guide column 28 exits the front mold cavity 7 and belongs to the exit state. The end of the guide column 28 extending out of the front mold plate 1 is connected to a telescopic driving mechanism 30 for driving the guide column 28 to switch between the injection molding state and the exit state. The telescopic driving mechanism 30 can be any existing telescopic driving mechanism that can realize the movement of the guide column 28 forward and backward along the extension groove 27.

[0053] It should be noted that the attached drawings of the present technical solution only show the injection molding state of the metal hook needle, but the injection mold is also applicable to bipolar electric hook forceps and bipolar electric coagulation forceps, and the only difference between the two is the shape of the molding cavity.

[0054] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metal part overmolding injection mold with connecting wires, characterized in that: The invention comprises a front mold core plate and a rear mold core plate, wherein the front mold core plate and the rear mold core plate are respectively fixedly mounted on the front mold base and the rear mold base, the front mold core plate is provided with a rubber-coated molding area, the rubber-coated molding area is provided with a mounting groove, the bottom wall of the mounting groove is provided with an insert hole, an insert is detachably mounted in the insert hole, the upper end of the insert is provided with a front mold cavity, the rear mold core plate is provided with a rear mold cavity, the outer shape of the molding cavity after the front mold cavity and the rear mold cavity are combined is consistent with the outer shape of the rubber-coated part of the metal part; an L-shaped mounting seat is detachably mounted in the mounting groove, the horizontal side and the vertical side of the L-shaped mounting seat are in contact with the two side walls of the insert, a metal part positioning groove and a wire harness lead-out groove are provided on the L-shaped mounting seat, the extension direction of the metal part positioning groove is perpendicular to the extension direction of the wire harness lead-out groove, a side of the insert close to the vertical side of the L-shaped mounting seat is provided with a limiting groove connected with the metal part positioning groove, and a wire harness lead-out channel is also provided on the L-shaped mounting seat.

2. The metal part overmolding injection mold with connecting wires according to claim 1, characterized in that: The metal part positioning groove includes a first U-shaped limiting portion, a second U-shaped limiting portion and an end limiting portion which are arranged in sequence, and there are hollow portions between the first U-shaped limiting portion and the second U-shaped limiting portion and between the second U-shaped limiting portion and the end limiting portion, and the hollow portions have no contact surface with the outer wall of the metal part.

3. The metal part overmolding injection mold with connecting wires according to claim 1, characterized in that: The front mold plate is symmetrically provided with an overmolding area.

4. The metal part overmolding injection mold with connecting wires according to claim 3, characterized in that: The front mold plate is also provided with a plastic part molding area, the plastic part molding area is provided with a front plastic part cavity, and a rear plastic part cavity is provided at a corresponding position on the rear mold plate. The shape of the molding cavity formed by combining the front plastic part cavity and the rear plastic part cavity is consistent with the shape of the plastic part to be molded.

5. The metal part overmolding injection mold with connecting wires according to claim 4, characterized in that: A main injection channel is provided on the front mold core plate, and the main injection channel is located between the two overmolding areas. First branch channels are symmetrically provided on the left and right sides of the upper end of the main injection channel, and the first branch channels are respectively connected to the two front mold cavities. Second branch channels are symmetrically provided on the left and right sides of the lower end of the main injection channel, and the second branch channels are respectively connected to the two front plastic part cavities.

6. The metal part overmolding injection mold with connecting wires according to claim 5, characterized in that: A valve is arranged in the middle of the main injection channel.

7. The metal part overmolding injection mold with connecting wires according to claim 1, characterized in that: The front mold base is provided with a push rod, which extends into the insert hole, and the push rod is vertically slidably matched with the insert. One end of the push rod passing through the front mold base is connected to a lifting drive mechanism for driving the push rod to rise and fall.

8. The metal part overmolding injection mold with connecting wires according to claim 7, characterized in that: The front mold base is provided with a mold groove, the front mold core plate is fixedly installed in the mold groove, the insert hole is a through hole penetrating the front mold core plate, and the inner bottom wall of the mold groove supports the lower end of the insert.

9. The metal part overmolding injection mold with connecting wires according to claim 1, characterized in that: An extension groove is provided on the front mold plate, and the extension direction of the extension groove is perpendicular to the extension direction of the metal part positioning groove. The extension groove is located on the opposite side of the wire harness lead-out groove. A guide column is provided in the extension groove, and the free end of the guide column cooperates with the positioning groove on the front mold cavity.

10. The metal part overmolding injection mold with connecting wires according to claim 9, characterized in that: The front end of the guide post is located in the front mold cavity and belongs to the injection state, and the front end of the guide post exits the front mold cavity and belongs to the exit state. The end of the guide post extending out of the front mold plate is connected to a telescopic driving mechanism for driving the guide post to switch between the injection state and the exit state.

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