Injection molding and punching combined mechanism

Abstract

The invention discloses an injection molding and punching combined mechanism which comprises an injection mold module and a water gap punching module. The injection mold module comprises an upper mold assembly and a lower mold assembly, an upper mold core is arranged on the upper mold assembly, a lower mold core is arranged on the lower mold assembly, an upper mold cavity is formed in the upper mold core, and a lower mold cavity matched with the upper mold cavity is formed in the lower mold core; the water gap punching module comprises a lower movable mold assembly and an upper movable mold assembly, the lower movable mold assembly comprises a movable positioning jig, the upper movable mold assembly comprises a water gap cutter capable of moving up and down, and the positioning jig is used for positioning a product workpiece taken out from the injection mold module; and the water gap cutter is used for cutting off a water gap on the product workpiece positioned on the positioning jig. According to the injection molding and punching combined mechanism, injection molding of products and automatic punching of water gaps are completed through the injection mold module and the water gap punching module, and the injection molding and punching combined mechanism has the advantages of being high in efficiency, low in labor cost, not prone to product damage, good in product quality and the like which are not achieved in the prior art.

Description

Technical Field

[0001] The invention relates to the field of product injection molding, in particular to an injection molding and punching combined mechanism. Background Art

[0002] For injection molded products, some appearance parts are not allowed to have glue inlet marks due to appearance requirements. If a glue inlet point is designed in the center area of ​​the product, the product can be filled more evenly, save nozzle materials and have fewer appearance weld lines. The location of the weld line will lead to an unsightly appearance and easily cause air entrapment and burning of the product during injection molding, which has high requirements for the injection molding machine adjustment process.

[0003] When only one inlet is designed, the mold design generally chooses:

[0004] 1. Glue is fed from the side where there is a hole in the center of the product

[0005] Technical defects: After injection molding, there will be residual glue from the side injection, which will affect the product assembly. It is necessary to manually process and cut off the excess residual water outlet. It is easy to cut the product during manual processing, and it is also easy to be scratched by tools accidentally, resulting in low production efficiency, high defective product quality, high processing fees and labor costs;

[0006] 2. The position with a hole in the center of the product is filled with glue.

[0007] Technical defects: After injection molding, there will be residual glue at the bottom of the bottom, which will affect the assembly of the product. It is necessary to manually process and cut off the excess residual water outlet. It is easy to cut the product during manual processing, and it is also accidentally scratched by the tool, resulting in low production efficiency, high processing fees and labor costs;

[0008] 3. Turn the submersible plate or horn submersible plate to the submersible plate at the fine water outlet on the outside of the product

[0009] Technical defects: 3.1-Due to the injection of glue at the fine sprue point, the pressure loss of the injection molding machine itself is relatively large. The fine sprue point turns into a diving piece on the flow channel, and the injection pressure loss is more obvious, making filling very difficult;

[0010] 3.2-The fine sprue has a lot of sprue material, which wastes production costs.

[0011] If the above glue feeding method is selected, the defects are:

[0012] 1. The fine water outlet turns into a bull's horn\diving, the pressure loss of the injection molding machine is large, filling is difficult, and the burrs on the parting surface on the glue inlet side are large;

[0013] Second, side injection / bottom injection will leave residue at the gate, requiring post-processing, which has high processing costs and is easy to damage the product;

[0014] In summary, the existing technology has various defects, which seriously restricts the further development and promotion and application of this field.

[0015] In view of this, the purpose of the present invention is to provide a new technical solution to solve the existing technical problems. Summary of the invention

[0016] In order to overcome the shortcomings of the prior art, the present invention provides an injection molding and punching combination mechanism, which solves the technical defects of the prior art, such as large pressure loss of the injection molding machine, difficulty in filling, large burrs on the parting surface on the glue inlet side or residues at the gate, need for post-processing, high processing cost, and easy damage to the product.

[0017] The technical solution adopted by the present invention to solve the technical problem is:

[0018] An injection molding and punching combination mechanism comprises an injection mold module and a sprue punching and cutting module; the injection mold module comprises an upper mold component and a lower mold component, the upper mold component is provided with an upper mold core, the lower mold component is provided with a lower mold core, the upper mold core has an upper mold cavity, and the lower mold core has a lower mold cavity matched with the upper mold cavity; the sprue punching and cutting module comprises a lower movable mold component and an upper movable mold component, the lower movable mold component comprises a movable positioning fixture, the upper movable mold component comprises a sprue cutter that can be lifted and moved, the positioning fixture is used to position a product workpiece taken out of the injection mold module, and the sprue cutter is used to cut off the sprue on the product workpiece positioned on the positioning fixture.

[0019] As a further improvement of the above technical solution, the sprue punching die set includes a punching die set mounting frame and a mounting platform arranged on the punching die set mounting frame, and the lower movable die assembly and the upper movable die assembly are both mounted on the mounting platform.

[0020] As a further improvement of the above technical solution, the lower mold assembly includes a sliding guide rail, a sliding drive device and a sliding mounting plate arranged on the mounting platform, the driving end of the sliding drive device is connected to the sliding mounting plate and is used to drive the sliding mounting plate to slide on the sliding guide rail, and the positioning fixture is installed on the sliding mounting plate.

[0021] As a further improvement of the above technical solution, the positioning fixture is provided with a positioning boss, and the side of the positioning boss is provided with a long side positioning block and a short side positioning block.

[0022] As a further improvement of the above technical solution, the sliding drive device includes a sliding drive cylinder, which is arranged at the bottom of the mounting platform. The output shaft of the sliding drive cylinder is fixedly connected to the sliding mounting plate through a connecting block and is used to drive the sliding mounting plate to slide on the sliding guide rail.

[0023] As a further improvement of the above technical solution, there are two sliding guide rails, a sliding limit block is arranged on the mounting platform, and a sliding limit ejector pin and a sliding position sensor are arranged on the sliding limit block.

[0024] As a further improvement of the above technical solution, the upper movable mold assembly includes a lifting guide column installed on the mounting platform, an upper mounting plate fixed to the upper end of the lifting guide column, a lifting mounting plate slidably mounted on the lifting guide column, a punching drive device arranged on the lifting mounting plate, and a lifting drive device arranged on the upper mounting plate, the output end of the lifting drive device is connected to the lifting mounting plate and is used to drive the lifting mounting plate to move up and down on the lifting guide column, the nozzle cutter is arranged at the output end of the punching drive device, and the punching drive device is used to drive the nozzle cutter to move to realize the function of punching the nozzle.

[0025] As a further improvement of the above technical solution, the punching drive device includes a punching drive cylinder, which is installed on the lifting mounting plate through a punching cylinder seat. A cutter mounting seat is provided at the output end of the punching drive cylinder, and the water nozzle cutter is installed on the cutter mounting seat.

[0026] As a further improvement of the above technical solution, the lifting drive device includes a lifting drive cylinder, which is arranged on the top of the upper mounting plate, and the output shaft of the lifting drive cylinder passes through the upper mounting plate and is fixedly connected to the lifting mounting plate through a cylinder connector.

[0027] As a further improvement of the above technical solution, a pressure rod for pressing the product workpiece is provided at the bottom of the lifting installation plate, and a soft rubber buffer pad is provided at the lower end of the pressure rod;

[0028] As a further improvement of the above technical solution, a descent-into-place sensing block is arranged at the bottom of the lifting installation plate, and a descent-into-place sensor cooperating with the descent-into-place sensing block is arranged on the installation platform.

[0029] The beneficial effects of the present invention are as follows: the present invention provides an injection molding and punching combination mechanism, which includes an injection mold module and a sprue punching module. The injection molding of the product is completed by the injection mold module, and the automatic punching of the sprue is completed by the sprue punching module. The degree of automation is high, the production efficiency is effectively improved, the product is not easily damaged, and the product quality is better.

[0030] In summary, this type of injection molding and punching combination mechanism solves the technical defects of the prior art, such as large pressure loss of the injection molding machine, difficulty in filling, large burrs on the parting surface on the glue inlet side or residual gates, need for post-processing, high processing costs, and easy damage to products. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 It is an assembly schematic diagram of the present invention;

[0033] Figure 2 It is a structural disassembly diagram of the injection mold module of the present invention;

[0034] Figure 3 It is a schematic diagram of the assembly of the nozzle punching module of the present invention;

[0035] Figure 4 It is another assembly schematic diagram of the nozzle punching module of the present invention;

[0036] Figure 5 It is a schematic diagram of the assembly of the lower movable mold assembly in the present invention;

[0037] Figure 6 It is another assembly schematic diagram of the lower movable mold assembly in the present invention;

[0038] Figure 7 It is an assembly schematic diagram of the upper movable mold component in the present invention. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other, refer to Figure 1-7 .

[0040] Specific reference Figure 1-4, an injection molding punching and cutting combination mechanism, including an injection mold module 1 and a sprue punching and cutting module 2; the injection mold module 1 includes an upper mold component 11 and a lower mold component 12, the upper mold component 11 is provided with an upper mold core 13, the lower mold component 12 is provided with a lower mold core 14, the upper mold core 13 has an upper mold cavity, and the lower mold core 14 has a lower mold cavity adapted to the upper mold cavity; the sprue punching and cutting module 2 includes a lower movable mold component 21 and an upper movable mold component 22, the lower movable mold component 21 includes a movable positioning fixture 211, the upper movable mold component 22 includes a sprue cutter 221 that can be lifted and moved, the positioning fixture 211 is used to position the product workpiece 9 taken out of the injection mold module 1, and the sprue cutter 221 is used to cut off the sprue on the product workpiece 9 positioned on the positioning fixture 211.

[0041] In the specific implementation, the injection mold module 1 adopts the side injection and bottom injection method. After the product injection is completed, the upper mold assembly 11 and the lower mold assembly 12 are opened, and the product workpiece 9 is moved to the sprue punching module 2 by a robot. The positioning fixture 211 in the sprue punching module 2 is used to position the product workpiece 9, and then the sprue parts on the product workpiece 9 are punched out by the sprue cutter 221 to complete the automatic punching function. The whole process does not require manual participation, saving labor costs, and avoiding damage to the product during manual punching, thereby ensuring product quality.

[0042] Reference Figure 3 In some embodiments, the sprue punching die set 2 includes a punching die set mounting frame 23 and a mounting platform 24 disposed on the punching die set mounting frame 23, and the lower movable die assembly 21 and the upper movable die assembly 22 are both mounted on the mounting platform 24. The punching die set mounting frame 23 is a support frame for the entire sprue punching die set 2, and can be manufactured using common profiles. The mounting platform 24 is an operating platform for punching the sprue.

[0043] Reference Figure 4-6 In some embodiments, the lower mold assembly 21 includes a sliding guide rail 212 arranged on the mounting platform 24, a sliding drive device and a sliding mounting plate 213 arranged on the sliding guide rail 212, the driving end of the sliding drive device is connected to the sliding mounting plate 213 and is used to drive the sliding mounting plate 213 to slide on the sliding guide rail 212, and the positioning fixture 211 is installed on the sliding mounting plate 213.

[0044] When in use, first, the sliding drive device drives the sliding mounting plate 213 together with the positioning fixture 211 to slide on the sliding guide rail 212 to a preset material receiving position. After they are in place, the robot places the product workpiece 9 that needs to punch the water outlet on the positioning fixture 211, and then the sliding drive device drives the sliding mounting plate 213 together with the positioning fixture 211 to slide in the opposite direction on the sliding guide rail 212 to the punching position. After sliding into place, the water outlet punching work is completed by the water outlet cutter 221 on the upper movable mold assembly 22.

[0045] In some embodiments, the positioning jig 211 is provided with a positioning boss 2111, and the side of the positioning boss 2111 is provided with a long side positioning block 2112 and a short side positioning block 2113. The shape of the positioning boss 2111 matches the shape of the workpiece 9 of the product, and the long side positioning block 2112 and the short side positioning block 2113 are used to position the long side and the short side of the workpiece 9 of the product to prevent the workpiece 9 from being loose during the punching process, thereby ensuring the punching quality of the product.

[0046] In some embodiments, the sliding drive device includes a sliding drive cylinder 214, which is disposed at the bottom of the mounting platform 24. The output shaft of the sliding drive cylinder 214 is fixedly connected to the sliding mounting plate 213 through a connecting block and is used to drive the sliding mounting plate 213 to slide on the sliding guide rail 212. In other embodiments, the implementer may also select a drive device that meets the performance requirements, such as an oil cylinder or an electric cylinder, as the sliding drive device as needed, which will not be described in detail here.

[0047] In some embodiments, the sliding guide rails 212 have two, the mounting platform 24 is provided with a sliding limit block 215, and the sliding limit block 215 is provided with a sliding limit pin 216 and a sliding position sensor 217. The sliding limit pin 216 and the sliding position sensor 217 ensure that the sliding mounting plate 213 and the positioning fixture 211 move to the appropriate position.

[0048] Reference Figure 7In some embodiments, the upper movable mold assembly 22 includes a lifting guide column 222 installed on the mounting platform 24, an upper mounting plate 223 fixed to the upper end of the lifting guide column 222, a lifting mounting plate 224 slidably mounted on the lifting guide column 222, a punching drive device arranged on the lifting mounting plate 224, and a lifting drive device arranged on the upper mounting plate 223, the output end of the lifting drive device is connected to the lifting mounting plate 224 and is used to drive the lifting mounting plate 224 to move up and down on the lifting guide column 222, the water nozzle cutter 221 is arranged at the output end of the punching drive device, and the punching drive device is used to drive the water nozzle cutter 221 to move to realize the function of punching the water nozzle.

[0049] When used, first, the lifting drive device drives the lifting installation plate 223 to rise to a preset height on the lifting guide column 222, and at the same time, the punching drive device and the nozzle cutter installed on the lifting installation plate 223 rise to a preset position. After rising to the right position, the lower movable mold assembly 21 moves the product workpiece 9 that needs to punch the nozzle to the bottom of the upper movable mold assembly 22. After the product workpiece 9 is in place, the lifting drive device drives the lifting installation plate 223 to descend to a preset height on the lifting guide column 222, and at the same time, the punching drive device and the nozzle cutter installed on the lifting installation plate 223 descend to a preset position. Further, the punching drive device drives the nozzle cutter 221 to punch downward to complete the nozzle punching.

[0050] In some embodiments, the punching drive device includes a punching drive cylinder 225, which is mounted on the lifting mounting plate 224 via a punching cylinder seat 226. A cutter mounting seat 227 is provided at the output end of the punching drive cylinder 225, and the nozzle cutter 221 is mounted on the cutter mounting seat 227. In some other embodiments, the implementer may also select a drive device that meets the performance requirements, such as an oil cylinder or an electric cylinder, as the punching drive device as needed.

[0051] In some embodiments, the lifting drive device includes a lifting drive cylinder 228, which is disposed on the top of the upper mounting plate 223, and the output shaft of the lifting drive cylinder 228 passes through the upper mounting plate and is fixedly connected to the lifting mounting plate 224 through a cylinder connector 2281. In some other embodiments, the implementer may also select a drive device that meets the performance requirements, such as an oil cylinder or an electric cylinder, as the lifting drive device as needed.

[0052] In some embodiments, a pressure rod 229 for pressing the product workpiece 9 is provided at the bottom of the lifting mounting plate 224, and a soft rubber buffer pad 2291 is provided at the lower end of the pressure rod 229; the product workpiece 9 is pressed by the soft rubber buffer pad 2291 to prevent the workpiece from loosening.

[0053] In some embodiments, a drop-into-place sensing block 25 is disposed at the bottom of the lifting installation plate 224, and a drop-into-place sensor 26 is disposed on the installation platform 24 to cooperate with the drop-into-place sensing block 25. The drop-into-place sensing block 25 and the drop-into-place sensor 26 cooperate to control the lifting installation plate 224 to move to a suitable height.

[0054] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An injection molding and punching combined mechanism, characterized in that: The invention comprises an injection mold module (1) and a nozzle punching module (2); the injection mold module (1) comprises an upper mold component (11) and a lower mold component (12); the upper mold component (11) is provided with an upper mold core (13); the lower mold component (12) is provided with a lower mold core (14); the upper mold core (13) has an upper mold cavity; the lower mold core (14) has a lower mold cavity matched with the upper mold cavity; the nozzle punching module (2) comprises A lower movable mold assembly (21) and an upper movable mold assembly (22), wherein the lower movable mold assembly (21) comprises a movable positioning fixture (211), and the upper movable mold assembly (22) comprises a nozzle cutter (221) that can be raised and lowered, the positioning fixture (211) being used to position a product workpiece (9) taken out of the injection mold module (1), and the nozzle cutter (221) being used to cut off the nozzle on the product workpiece (9) positioned on the positioning fixture (211).

2. The injection molding and punching combined mechanism according to claim 1, characterized in that: The sprue punching die set (2) comprises a punching die set mounting frame (23) and a mounting platform (24) arranged on the punching die set mounting frame (23), and the lower movable die assembly (21) and the upper movable die assembly (22) are both mounted on the mounting platform (24).

3. The injection molding and punching combined mechanism according to claim 2, characterized in that: The lower mold assembly (21) comprises a sliding guide rail (212) arranged on the mounting platform (24), a sliding drive device and a sliding mounting plate (213) arranged on the sliding guide rail (212); the driving end of the sliding drive device is connected to the sliding mounting plate (213) and is used to drive the sliding mounting plate (213) to slide on the sliding guide rail (212); and the positioning fixture (211) is mounted on the sliding mounting plate (213).

4. The injection molding and punching combined mechanism according to claim 3, characterized in that: The positioning fixture (211) is provided with a positioning boss (2111), and the side of the positioning boss (2111) is provided with a long side positioning block (2112) and a short side positioning block (2113).

5. The injection molding and punching combined mechanism according to claim 3, characterized in that: The sliding drive device comprises a sliding drive cylinder (214), which is arranged at the bottom of the mounting platform (24); an output shaft of the sliding drive cylinder (214) is fixedly connected to the sliding mounting plate (213) via a connecting block and is used to drive the sliding mounting plate (213) to slide on the sliding guide rail (212).

6. The injection molding and punching combined mechanism according to claim 3, characterized in that: The sliding guide rails (212) are provided with two, the mounting platform (24) is provided with a sliding limit block (215), and the sliding limit block (215) is provided with a sliding limit ejector pin (216) and a sliding position sensor (217).

7. The injection molding and punching combined mechanism according to claim 2, characterized in that: The upper movable mold assembly (22) comprises a lifting guide column (222) mounted on the mounting platform (24), an upper mounting plate (223) fixed to the upper end of the lifting guide column (222), a lifting mounting plate (224) slidably mounted on the lifting guide column (222), a punching drive device arranged on the lifting mounting plate (224), and a lifting drive device arranged on the upper mounting plate (223); the output end of the lifting drive device is connected to the lifting mounting plate (224) and is used to drive the lifting mounting plate (224) to move up and down on the lifting guide column (222); the nozzle cutter (221) is arranged at the output end of the punching drive device, and the punching drive device is used to drive the nozzle cutter (221) to move to achieve the function of punching the nozzle.

8. The injection molding and punching combined mechanism according to claim 7, characterized in that: The punching drive device comprises a punching drive cylinder (225), the punching drive cylinder (225) is mounted on the lifting mounting plate (224) via a punching cylinder seat (226), a cutter mounting seat (227) is provided at the output end of the punching drive cylinder (225), and the nozzle cutter (221) is mounted on the cutter mounting seat (227).

9. The injection molding and punching combined mechanism according to claim 7, characterized in that: The lifting drive device comprises a lifting drive cylinder (228), wherein the lifting drive cylinder (228) is arranged on the top of the upper mounting plate (223), and the output shaft of the lifting drive cylinder (228) passes through the upper mounting plate and is fixedly connected to the lifting mounting plate (224) through a cylinder connector (2281).

10. The injection molding and punching combined mechanism according to claim 7, characterized in that: A pressure rod (229) for pressing the product workpiece (9) is arranged at the bottom of the lifting installation plate (224), and a soft rubber buffer pad (2291) is arranged at the lower end of the pressure rod (229); A descent-in-place sensing block (25) is disposed at the bottom of the lifting installation plate (224), and a descent-in-place sensor (26) cooperating with the descent-in-place sensing block (25) is disposed on the installation platform (24).

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