Operation brush mold and operation brush manufacturing method

Abstract

The invention relates to a surgical brush mold and a surgical brush manufacturing method.The surgical brush mold comprises an upper mold assembly and a lower mold assembly, the upper mold assembly comprises a first upper mold assembly and a second upper mold assembly, the first upper mold assembly comprises an upper mold top plate and a driving upper mold plate, the upper mold top plate is fixedly connected with the driving upper mold plate, and a connecting column is fixed to the driving upper mold plate; the second upper die assembly comprises a passive upper die plate and a plurality of upper die bases fixedly connected with the passive upper die plate, an upper die cavity is formed in each upper die base, a sliding rod is arranged in each upper die cavity, each sliding rod is sleeved with a plurality of metal sheets, each metal sheet is provided with a plurality of forming grooves, and a connecting column is inserted into each upper die cavity and abuts against the corresponding metal sheet. The metal sheet is tightly pressed in the upper die cavity by the connecting column; according to the invention, the wrapping force of the surgical brush product on the metal sheet can be released, and the demolding force required during demolding is reduced, so that the situation that the thin teeth of the surgical brush product are broken due to overlarge stress during demolding is avoided, and the thin teeth can be ensured to be uniform in thickness, neat and non-bent.

Description

Technical Field

[0001] The invention relates to the field of surgical brush manufacturing, in particular to a surgical brush mold and a surgical brush manufacturing method. Background Art

[0002] Surgical brushes are generally injection molded with LDPE material. After the product is molded, the LDPE material will be coated on the molding mold. The surgical brush product has a large clamping force on the mold. During demolding, the fine teeth of the surgical brush product are easily subjected to a large demolding force and may break. Summary of the invention

[0003] The purpose of the present invention is to provide a surgical brush mold and a surgical brush manufacturing method which can effectively prevent the broken teeth of surgical brush products and have good product molding effect.

[0004] The technical solution for achieving the purpose of the present invention is as follows: A surgical brush mold, comprising an upper mold assembly and a lower mold assembly, the upper mold assembly comprising a first upper mold assembly and a second upper mold assembly, the first upper mold assembly comprising an upper mold top plate and an active upper mold plate, the upper mold top plate is fixedly connected to the active upper mold plate, a connecting column is fixed on the active upper mold plate, the second upper mold assembly comprises a passive upper mold plate and a plurality of upper mold seats fixedly connected to the passive upper mold plates, an upper mold seat having an upper mold cavity, a sliding rod is arranged in the upper mold cavity, a plurality of metal sheets are sleeved on the sliding rod, a plurality of forming grooves are arranged on the metal sheet, the connecting column is inserted into the upper mold cavity and abuts against the metal sheet, and the connecting column presses the metal sheet tightly into the upper mold cavity; The active upper template is provided with a plurality of guide posts, the passive upper template is provided with guide grooves corresponding to the guide posts one by one, the lower ends of the guide posts extend into the guide grooves, the guide posts are provided with bosses, the guide grooves are provided with limit blocks, and the lower ends of the guide posts are constrained in the guide grooves by the cooperation of the bosses and the limit blocks; The lower die assembly comprises a lower die bottom plate, a push plate arranged on the upper surface of the lower die bottom plate, support plates arranged on both sides of the push plate, and a lower die base arranged on the upper end of the support plate, the lower die bottom plate, the support plate and the lower die base are fixedly connected by bolts, a plurality of lower die blocks corresponding to the upper die base are arranged on the lower die base, a plurality of ejector rods are fixed on the push plate, and the ejector rods extend upward and pass through the lower die base and the lower die blocks; The upper mold cavity and the lower mold plate are combined to form a molding cavity. An injection rod for injecting molding materials is fixed on the active upper mold plate, and the injection rod is communicated with the molding cavity.

[0005] After adopting the above structure, before closing the mold, the connecting column is inserted into the molding cavity, and the connecting column abuts against the metal sheet, thereby clamping the metal sheet in the upper mold cavity. After the injection molding is completed, the connecting column is pulled out of the molding cavity, and the clamping force on the metal sheet disappears, and the metal sheets become loose, thereby releasing the clamping force of the surgical brush product on the metal sheet, reducing the demolding force required for demolding, thereby avoiding the fine teeth of the surgical brush product from breaking due to excessive force during demolding, and can also ensure that the fine teeth are uniform in thickness, neat and not bent. The present invention can effectively prevent the surgical brush products from breaking, and the product molding effect is good.

[0006] Preferably, the connecting column is provided with a through hole from top to bottom, and the injection rod extends into the through hole.

[0007] Preferably, a spring is arranged in the guide groove, and the lower end of the guide column extends into the guide groove and contacts the spring.

[0008] Preferably, the upper mold base is provided with a first cooling water channel and a first water inlet pipe and a first water outlet pipe connected to the first cooling water channel.

[0009] Preferably, the lower module is provided with a second cooling water circuit and a second water inlet pipe and a second water outlet pipe connected to the second cooling water circuit.

[0010] Preferably, a fixed block and a wedge block are provided in the upper mold cavity, the fixed block is fixedly connected to the upper mold base by screws, a side of the fixed block facing the wedge block is provided with an inclined surface matching the wedge block, and the metal sheet is arranged between the wedge block and the connecting column.

[0011] Preferably, the active upper template is provided with an installation groove, a diverter block is provided in the installation groove, a plurality of diverter channels are provided in the diverter block, a feed pipe connected with the diverter channel is fixed on the upper surface of the diverter block, the feed pipe is fixedly connected to the upper mold top plate, a plurality of diverter tubes corresponding one-to-one to the diverter channels are fixed on the lower surface of the diverter block, the diverter tubes are connected with the diverter channels, and the diverter tubes correspond one-to-one to and are connected with the injection tubes.

[0012] A method for manufacturing a surgical brush, comprising the above-mentioned surgical brush mold, wherein a fixed block and a wedge-shaped block are arranged in an upper mold cavity, the fixed block is fixedly connected to an upper mold base by screws, and a side of the fixed block facing the wedge-shaped block is provided with an inclined surface cooperating with the wedge-shaped block; It also includes the following production steps: S1. Insert the connecting column into the upper die cavity and contact the metal sheet. At the same time, tighten the screws on the fixing block. The fixing block exerts a lateral force on the wedge block, so that the wedge block exerts a wedging force on the metal sheet, so that the wedge block and the connecting column clamp the metal sheet. S2, the upper mold assembly moves downward and closes with the lower mold assembly, the upper mold cavity and the lower mold assembly are combined to form a molding cavity, the injection rod injects the material into the molding cavity, and the surgical brush product is obtained after the material solidifies; S3, the first upper mold assembly moves upward, the second upper mold assembly does not move, the connecting column is separated from the metal sheet, the stacked metal sheets are no longer subject to the wedging force transmitted by the wedge block, the metal sheets are loosened to produce gaps, and the mold wrapping force is released; S4, the boss contacts the limit block, so that the second upper mold assembly moves upward along with the first upper mold assembly, the upper mold base is separated from the lower mold base, and the surgical brush product is separated from the metal sheet to complete demoulding; S5. Apply force to the push plate to move the push plate upward, thereby causing the ejector rod to move upward and eject the surgical brush product from the upper end of the lower module.

[0013] The upper die seat is provided with a first cooling water channel and a water inlet pipe and a water outlet pipe connected to the first cooling water channel. The temperature in the first cooling water channel is controlled at 30°C-60°C.

[0014] The lower module is provided with a second cooling water circuit and a second water inlet pipe and a second water outlet pipe connected with the second cooling water circuit. The temperature of the cooling water in the second cooling water circuit is controlled at 30°C-60°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0018] Figure 3 It is a schematic diagram of the connection relationship between the connecting column and the metal sheet of the present invention.

[0019] Figure 4 It is a schematic diagram of the connection between the metal sheet and the sliding rod of the present invention.

[0020] Figure 5 This is a schematic diagram of the installation of the diverter block of the present invention.

[0021] Figure 6 It is a schematic diagram of the upper surface of the diverter block of the present invention.

[0022] Figure 7 It is a schematic diagram of the lower surface of the diverter block of the present invention.

[0023] Figure 8 It is a schematic diagram of the diversion channel structure of the present invention.

[0024] Fig. 9It is a schematic diagram of the connection relationship of the shunt block of the present invention.

[0025] Fig.10 It is a schematic diagram of the upper die base structure of the present invention.

[0026] Fig.11 It is a schematic diagram of the upper mold cavity structure of the present invention.

[0027] Fig.12 It is a schematic diagram of the first cooling water channel of the upper mold base of the present invention.

[0028] Fig.13 It is a schematic diagram of the metal sheet structure of the present invention.

[0029] Fig.14 It is a schematic diagram of the lower module structure of the present invention.

[0030] Fig.15 It is a side schematic diagram of the lower module of the present invention.

[0031] Fig.16 This is a schematic diagram of the second cooling water circuit of the lower module of the present invention. DETAILED DESCRIPTION

[0032] like Figures 1 to 16As shown, a surgical brush mold of the present invention includes an upper mold component and a lower mold component, the upper mold component includes a first upper mold component and a second upper mold component, the first upper mold component includes an upper mold top plate 1 and an active upper mold plate 2, the upper mold top plate is fixedly connected to the active upper mold plate, a connecting column 3 is fixed on the active upper mold plate, the second upper mold component includes a passive upper mold plate 4 and a plurality of upper mold bases 5 fixedly connected to the passive upper mold plates, an upper mold base has an upper mold cavity 6, a sliding rod 7 is arranged in the upper mold cavity, a plurality of superimposed metal sheets 8 are sleeved on the sliding rod, a plurality of molding grooves 9 are arranged on the metal sheets, the connecting column is inserted into the upper mold cavity and abuts against the metal sheet, and a A fixed block 10 and a wedge block 11, the fixed block is fixedly connected to the upper die seat by screws, a side of the fixed block facing the wedge block is provided with an inclined surface 12 that cooperates with the wedge block, the metal sheet is arranged between the wedge block and the connecting column, when the screws on the fixed block are tightened, the fixed block generates a lateral force on the wedge block through the inclined surface, so that the wedge block generates a wedging force on the metal sheet, so that the wedge block and the connecting column clamp the metal sheet, the active upper template is provided with a plurality of guide columns 13, the passive upper template is provided with a guide groove 14 corresponding to the guide columns one by one, the lower end of the guide column extends into the guide groove, a spring 15 is arranged in the guide groove, the lower end of the guide column extends into the guide groove and cooperates with the guide column Spring contact, the guide column is provided with a boss 16, and the guide groove is provided with a limit block 17. The lower end of the guide column is constrained in the guide groove by the cooperation of the boss and the limit block; the lower mold assembly includes a lower mold bottom plate 18, a push plate 19 arranged on the upper surface of the lower mold bottom plate, a support plate 20 arranged on both sides of the push plate, and a lower mold base 21 arranged on the upper end of the support plate. The lower mold bottom plate, the support plate and the lower mold base are fixedly connected by bolts. A plurality of lower modules 22 corresponding to the upper mold base are fixedly provided on the lower mold base, and a plurality of ejector rods 23 are fixed on the push plate. The ejector rods extend upward and pass through the lower mold base and the lower module; the upper mold cavity and the lower module are enclosed to form A molding cavity, an active upper template is provided with a mounting groove 31, a diverter block 32 is provided in the mounting groove, a plurality of diverter channels 33 are provided in the diverter block, a feed port 35 is provided on the upper surface of the diverter block, a feed pipe 34 connected with the feed port is fixed on the upper surface of the diverter block, the feed pipe is fixedly connected to the upper mold top plate, a plurality of diverter ports 36 corresponding to the diverter channels are fixed on the lower surface of the diverter block, a diverter pipe 37 connected with the diverter port is fixed at the diverter port, an injection rod 24 for injection molding material is fixed to the diverter pipe, a connecting column is provided with a through hole from top to bottom, the injection rod extends into the through hole, and the injection rod is connected with the molding cavity.

[0033] After adopting the above structure, before closing the mold, the connecting column is inserted into the molding cavity, and the connecting column abuts against the metal sheet, thereby clamping the metal sheet in the upper mold cavity. After the injection molding is completed, the connecting column is pulled out of the molding cavity, and the clamping force on the metal sheet disappears, and the metal sheets become loose, thereby releasing the clamping force of the surgical brush product on the metal sheet, reducing the demolding force required for demolding, thereby avoiding the fine teeth of the surgical brush product from breaking due to excessive force during demolding, and ensuring that the fine teeth are uniform in thickness, neat and not bent.

[0034] In some embodiments, Fig.10 , 12 As shown, the upper mold base is provided with a first cooling water channel 25 and a first water inlet pipe 26 and a first water outlet pipe 27 communicated with the first cooling water channel.

[0035] In some embodiments, Fig.14 , 15 As shown in Figures 1 and 16, the lower module is provided with a second cooling water channel 28 and a second water inlet pipe 29 and a second water outlet pipe 30 connected to the second cooling water channel.

[0036] A method for manufacturing a surgical brush, comprising the above-mentioned surgical brush mold, wherein a fixed block and a wedge-shaped block are arranged in an upper mold cavity, the fixed block is fixedly connected to an upper mold base by screws, and a side of the fixed block facing the wedge-shaped block is provided with an inclined surface cooperating with the wedge-shaped block; It also includes the following production steps: S1. Insert the connecting column into the upper die cavity and contact the metal sheet. At the same time, tighten the screws on the fixing block. The fixing block exerts a lateral force on the wedge block, so that the wedge block exerts a wedging force on the metal sheet, so that the wedge block and the connecting column clamp the metal sheet. S2, the upper mold assembly moves downward and closes with the lower mold assembly, the upper mold cavity and the lower mold assembly are combined to form a molding cavity, the injection rod injects the material into the molding cavity, and the surgical brush product is obtained after the material solidifies; S3, the first upper mold assembly moves upward, the second upper mold assembly does not move, the connecting column is separated from the metal sheet, the stacked metal sheets are no longer subject to the wedging force transmitted by the wedge block, the metal sheets are loosened to produce gaps, and the mold wrapping force is released; S4, the boss contacts the limit block, so that the second upper mold assembly moves upward along with the first upper mold assembly, the upper mold base is separated from the lower mold base, and the surgical brush product is separated from the metal sheet to complete demoulding; S5. Apply force to the push plate to move the push plate upward, thereby causing the ejector rod to move upward and eject the surgical brush product from the upper end of the lower module.

[0037] In some embodiments, the upper mold base is provided with a first cooling water circuit and a water inlet pipe and a water outlet pipe connected to the first cooling water circuit. The temperature of the cooling water in the first cooling water circuit is controlled at 30°C-60°C. Specifically, the temperature of the cooling water in the first cooling water circuit can be controlled at 30°C, 35°C, 40°C, 45°C, 50°C, 55°C or 60°C.

[0038] In some embodiments, the lower module is provided with a second cooling water circuit and a second water inlet pipe and a second water outlet pipe connected to the second cooling water circuit. The temperature of the cooling water in the second cooling water circuit is controlled at 30°C-60°C. Specifically, the temperature of the cooling water in the second cooling water circuit can be controlled at 30°C, 35°C, 40°C, 45°C, 50°C, 55°C or 60°C.

[0039] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A surgical brush mold, comprising an upper mold assembly and a lower mold assembly, characterized in that: The upper die assembly comprises a first upper die assembly and a second upper die assembly, the first upper die assembly comprises an upper die top plate and an active upper die plate, the upper die top plate is fixedly connected to the active upper die plate, a connecting column is fixed on the active upper die plate, the second upper die assembly comprises a passive upper die plate and a plurality of upper die seats fixedly connected to the passive upper die plates, an upper die seat has an upper die cavity, a sliding rod is arranged in the upper die cavity, a plurality of metal sheets are sleeved on the sliding rod, a plurality of forming grooves are arranged on the metal sheet, the connecting column is inserted into the upper die cavity and abuts against the metal sheet, and the connecting column presses the metal sheet tightly into the upper die cavity; The active upper template is provided with a plurality of guide posts, the passive upper template is provided with guide grooves corresponding to the guide posts one by one, the lower ends of the guide posts extend into the guide grooves, the guide posts are provided with bosses, the guide grooves are provided with limit blocks, and the lower ends of the guide posts are constrained in the guide grooves by the cooperation of the bosses and the limit blocks; The lower die assembly comprises a lower die bottom plate, a push plate arranged on the upper surface of the lower die bottom plate, support plates arranged on both sides of the push plate, and a lower die base arranged on the upper end of the support plate, the lower die bottom plate, the support plate and the lower die base are fixedly connected by bolts, a plurality of lower die blocks corresponding to the upper die base are arranged on the lower die base, a plurality of ejector rods are fixed on the push plate, and the ejector rods extend upward and pass through the lower die base and the lower die blocks; The upper mold cavity and the lower mold plate are combined to form a molding cavity. An injection rod for injecting molding materials is fixed on the active upper mold plate, and the injection rod is communicated with the molding cavity.

2. A surgical brush mold according to claim 1, characterized in that: The connecting column is provided with a through hole from top to bottom, and the injection rod extends into the through hole.

3. A surgical brush mold according to claim 1, characterized in that: A spring is arranged in the guide groove, and the lower end of the guide column extends into the guide groove and contacts the spring.

4. A surgical brush mold according to claim 1, characterized in that: The upper die seat is provided with a first cooling water channel and a first water inlet pipe and a first water outlet pipe which are connected with the first cooling water channel.

5. A surgical brush mold according to claim 1, characterized in that: The lower module is provided with a second cooling water circuit and a second water inlet pipe and a second water outlet pipe which are in communication with the second cooling water circuit.

6. A surgical brush mold according to claim 1, characterized in that: A fixed block and a wedge block are arranged in the upper die cavity. The fixed block is fixedly connected to the upper die seat by screws. A slope matching the wedge block is arranged on one side of the fixed block facing the wedge block. The metal sheet is arranged between the wedge block and the connecting column.

7. A surgical brush mold according to claim 1, characterized in that: The active upper template is provided with an installation groove, a diverter block is provided in the installation groove, a plurality of diverter channels are provided in the diverter block, a feed pipe connected with the diverter channel is fixed on the upper surface of the diverter block, the feed pipe is fixedly connected with the upper mold top plate, a plurality of diverter tubes corresponding one-to-one with the diverter channels are fixed on the lower surface of the diverter block, the diverter tubes are connected with the diverter channels, and the diverter tubes correspond one-to-one with the injection tubes and are connected.

8. A method for manufacturing a surgical brush, characterized in that: A surgical brush mold comprising any one of claims 1 to 6, wherein a fixed block and a wedge-shaped block are arranged in the upper mold cavity, the fixed block is fixedly connected to the upper mold base by screws, and a side of the fixed block facing the wedge-shaped block is provided with an inclined surface cooperating with the wedge-shaped block; It also includes the following production steps: S1. Insert the connecting column into the upper die cavity and contact the metal sheet. At the same time, tighten the screws on the fixing block. The fixing block exerts a lateral force on the wedge block, so that the wedge block exerts a wedging force on the metal sheet, so that the wedge block and the connecting column clamp the metal sheet. S2, the upper mold assembly moves downward and closes with the lower mold assembly, the upper mold cavity and the lower mold assembly are combined to form a molding cavity, the injection rod injects the material into the molding cavity, and the surgical brush product is obtained after the material solidifies; S3, the first upper mold assembly moves upward, the second upper mold assembly does not move, the connecting column is separated from the metal sheet, the stacked metal sheets are no longer subject to the wedging force transmitted by the wedge block, the metal sheets are loosened to produce gaps, and the mold wrapping force is released; S4, the boss contacts the limit block, so that the second upper mold assembly moves upward along with the first upper mold assembly, the upper mold base is separated from the lower mold base, and the surgical brush product is separated from the metal sheet to complete demoulding; S5. Apply force to the push plate to move the push plate upward, thereby causing the ejector rod to move upward and eject the surgical brush product from the upper end of the lower module.

9. The method for manufacturing a surgical brush according to claim 8, characterized in that: The upper die seat is provided with a first cooling water channel and a water inlet pipe and a water outlet pipe connected to the first cooling water channel. The temperature in the first cooling water channel is controlled at 30°C-60°C.

10. The method for manufacturing a surgical brush according to claim 8, characterized in that: The lower module is provided with a second cooling water circuit and a second water inlet pipe and a second water outlet pipe connected with the second cooling water circuit. The temperature of the cooling water in the second cooling water circuit is controlled at 30°C-60°C.

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