A sensor package shell automatic continuous injection mold structure and a method of using the same

Abstract

This invention provides an automatic continuous injection molding die structure for sensor packaging shells, comprising a metal strip and an injection mold. The metal strip includes a chain belt with a plurality of metal inserts spaced apart along the length of the chain belt. The injection mold includes a rear mold with a plurality of cavities for inserting the metal inserts. The rear mold also includes an ejection mechanism for disengaging the molded product from the cavities. Along the conveying direction of the metal strip, the ejection mechanism sequentially includes a first conveying device, a push plate, and a second conveying device. Both the first and second conveying devices have a first guide groove for the metal strip to pass through. The push plate has a second guide groove for the metal strip to pass through, perpendicular to the conveying direction of the metal strip. The cavities are distributed on both sides of the push plate. This invention also provides a method for using the automatic continuous injection molding die structure for sensor packaging shells.

Description

Technical Field

[0001] This invention relates to the field of injection mold manufacturing, and in particular to an automatic continuous injection mold structure for sensor packaging shells and its usage method. Background Technology

[0002] Currently, injection molded parts with metal inserts are increasingly widely used in various products. Among them, injection molded housings with metal mounting plates are widely used in temperature sensor products. This type of housing effectively improves the insulation withstand voltage level of the product, while making installation more convenient and efficient.

[0003] Injection-molded packaging shells with metal inserts are typically produced using conventional component injection molding. The metal inserts need to be manually placed into the corresponding cavity in the mold one by one, which results in low production efficiency and safety hazards. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art and provide an automatic continuous injection mold structure for sensor packaging shells and its usage method. This invention solves at least some of the problems in the prior art.

[0005] This invention is implemented as follows:

[0006] This invention provides an automatic continuous injection molding structure for a sensor packaging shell, comprising a metal strip and an injection mold. The metal strip includes a chain belt with a plurality of metal inserts spaced apart along the length of the chain belt. The injection mold includes a rear mold with a plurality of cavities for inserting the metal inserts. The rear mold also includes an ejection mechanism for dislodging the injection-molded product from the cavities. Along the conveying direction of the metal strip, the ejection mechanism is sequentially provided with a first conveying device, a push plate, and a second conveying device. Both the first and second conveying devices have a first guide groove for the metal strip to pass through. The push plate has a second guide groove for the metal strip to pass through, perpendicular to the conveying direction of the metal strip. The cavities are distributed on both sides of the push plate.

[0007] Furthermore, the push plate includes an upper cover plate and a base, and a second guide groove is provided between the upper cover plate and the base.

[0008] Furthermore, the first conveying device is a first ratchet feeder, and the second conveying device is a second ratchet feeder. Both the first and second ratchet feeders are equipped with gears that drive the metal strip forward. The metal strip is provided with a plurality of positioning holes that can mesh with the gears. Each positioning hole is spaced apart along the length of the chain, and each positioning hole corresponds to a metal insert.

[0009] Furthermore, both the first ratchet feeder and the second ratchet feeder include a first cover plate and a machine body. A first guide groove is provided between the first cover plate and the machine body. A gear drive shaft is installed on the machine body, and the metal strip meshes with the gear in the first guide groove.

[0010] Furthermore, the ejection mechanism includes an ejector pin for ejecting the metal insert from the mold cavity, the ejector pin being located directly below the mold cavity and extending upward into the mold cavity.

[0011] Furthermore, each mold cavity corresponds to several ejector pins, and the ejector pins are distributed at intervals along the length of the mold cavity.

[0012] Furthermore, the automatic continuous injection molding structure of the sensor packaging shell also includes a number of positioning pins that can extend into the positioning hole for positioning the metal strip. The positioning pins are installed in the mold core of the rear mold, and the positioning pins correspond one-to-one with the mold cavity.

[0013] Furthermore, the top of the positioning pin is provided with a guide taper.

[0014] Furthermore, the automatic continuous injection molding mold structure for the sensor packaging shell also includes an inner membrane, on which a plurality of holes corresponding to the mold cavity are provided. The holes correspond one-to-one with the mold cavity, and the holes and the mold cavity together form a mold cavity for injection molding.

[0015] The present invention also provides a method for using an automatic continuous injection molding structure for sensor packaging shells, comprising the following steps:

[0016] During injection molding, the metal strip advances one step in the guide groove under the action of the first ratchet feeder and the second ratchet feeder. After the mold is closed, the ejector mechanism is reset, which drives the metal inserts on the metal strip to be embedded into the corresponding mold cavity. The positioning holes on the metal strip chain are precisely embedded into the positioning pins, and injection molding begins.

[0017] After injection molding is completed, the metal insert is first pushed upward a certain distance by the ejector pin and the push plate together. The ejector pin stops moving, and the push plate continues to push the metal insert upward a certain distance.

[0018] Under the action of the first ratchet feeder and the second ratchet feeder, the metal strip advances another step, pulling the completed metal insert out of the second guide groove of the pusher plate, and at the same time pulling the metal insert to be injected into the second guide groove of the pusher plate for the next injection.

[0019] The present invention has the following beneficial effects:

[0020] 1. This invention provides an automatic continuous injection molding mold structure for sensor packaging shells. By installing a ratchet feeding machine on the mold ejection mechanism, automatic feeding and pulling of metal strips is realized.

[0021] 2. This invention provides an automatic continuous injection molding mold structure for sensor packaging shells. By designing guide grooves on the push plate, the metal strip can move on the push plate, and under the action of the push plate, the metal strip can be automatically ejected and reset.

[0022] 3. A positioning pin is installed in the rear mold core. The head of the positioning pin is designed with a tapered guide so that the metal strip can be accurately placed into the corresponding cavity of the mold when it is reset.

[0023] 4. This invention provides an automatic continuous injection molding mold structure for sensor packaging shells, which realizes automated continuous injection molding of products with metal inserts, greatly improving production efficiency, ensuring safe and reliable production process, and achieving high qualification rate and good consistency of injection molded products. It also avoids the problem of high risk factor associated with manually placing metal inserts during the injection molding process. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 Schematic diagram of the automatic continuous injection mold structure for sensor packaging shell provided in this embodiment of the invention. Figure 1 ;

[0026] Figure 2 Provided for embodiments of the present invention Figure 1 A magnified view of a portion of the image;

[0027] Figure 3 Schematic diagram of the automatic continuous injection mold structure for sensor packaging shell provided in this embodiment of the invention. Figure 2 ;

[0028] Figure 4 A schematic diagram of the metal strip provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of a ratchet feeding machine provided in an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the push plate provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of a positioning pin provided in an embodiment of the present invention.

[0032] In the diagram: 1. Metal strip; 2. First ratchet feeder; 3. Push plate; 4. Positioning insert; 5. Ejector pin; 6. Second ratchet feeder; 7. Inner mold; 8. Sprue; 9. Mold back mold; 10. Metal insert; 11. Chain belt; 12. Positioning hole; 13. Injection part; 14. Single metal insert; 15. Single injection molded product; 16. First cover plate; 17. Machine body; 18. First guide groove; 19. Gear drive shaft; 20. Second cover plate; 21. Base; 22. Second guide groove; 23. Guide taper. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "several" means two or more.

[0036] like Figures 1-7 Embodiment 1 of the present invention provides an automatic continuous injection molding die structure for a sensor packaging shell, including a metal strip 1 and an injection mold, as shown below. Figure 4 The metal strip 1 includes a chain belt, on which a plurality of metal inserts 10 are provided. The metal inserts 10 are spaced apart along the length of the chain belt 1. The injection mold includes a rear mold 9, which has a plurality of cavities for the metal inserts 10 to be inserted into. The rear mold 9 also has an ejection mechanism for driving the injection-molded product out of the cavities. Figure 1Along the conveying direction of the metal strip 1, the ejection mechanism is provided with a first conveying device, a push plate 3, and a second conveying device 6 in sequence. The first conveying device and the conveying device are each provided with a first guide groove 18 for the metal strip 1 to pass through. The push plate 3 is provided with a second guide groove 22 for the metal strip 1 to pass through, perpendicular to the conveying direction of the metal strip 1. Each of the mold cavities is distributed on both sides of the push plate 3.

[0037] The push plate 3 includes an upper cover plate and a base, with a second guide groove 22 provided between the upper cover plate and the base. The first conveying device is a first ratchet feeder 2, and the second conveying device is a second ratchet feeder 6. Both the first ratchet feeder 2 and the second ratchet feeder 6 are equipped with gears that drive the metal strip 1 forward. Figure 4 The metal strip 1 is provided with a plurality of positioning holes 12 that can mesh with gears. Each positioning hole 12 is spaced apart along the length of the chain 1, and each positioning hole 12 corresponds to a metal insert 10. Both the first ratchet feeding machine 2 and the second ratchet feeding machine 6 include a first cover plate 16 and a machine body 17. A first guide groove 18 is provided between the first cover plate 16 and the machine body 17. A gear drive shaft 19 is mounted on the machine body 17, and the metal strip 1 meshes with the gear in the first guide groove 18.

[0038] The ejection mechanism includes ejector pins 5 that eject the metal insert 10 out of the mold cavity. The ejector pins 5 are located directly below the mold cavity and can extend upward into the mold cavity. Each mold cavity corresponds to a plurality of ejector pins 5, and the ejector pins 5 are spaced apart along the length of the mold cavity.

[0039] like Figure 7 The automatic continuous injection molding structure of the sensor encapsulation shell also includes a number of positioning pins 4 that can be inserted into the positioning hole for positioning the metal strip 1. The positioning pins 4 are installed in the mold core of the rear mold 9. The positioning pins 4 correspond one-to-one with the mold cavity. The top of the positioning pin is provided with a guide taper 23.

[0040] The automatic continuous injection molding mold structure for the sensor encapsulation shell also includes an inner membrane 7 and sprue material 8 for injection molding. The inner membrane is provided with a plurality of holes corresponding to the mold cavity. The holes correspond one-to-one with the mold cavity, and the holes and the mold cavity together form a mold cavity for injection molding.

[0041] Embodiment 2 of the present invention provides a method for using an automatic continuous injection molding mold structure for a sensor encapsulation shell, comprising the following steps: During injection molding production, the metal strip 1 advances one step in the guide groove under the action of the first ratchet feeder 2 and the second ratchet feeder 6. After mold closing, the ejector mechanism resets, driving the metal insert 10 on the metal strip 1 to be embedded into the corresponding mold cavity. The positioning hole 12 on the chain of the metal strip 1 is precisely embedded in the positioning insert 4, and injection molding begins. After injection molding is completed, the metal insert 10 is first pushed upward a distance by the ejector pin 5 and the push plate 3. The ejector pin 5 stops moving, and the push plate 3 continues to push the metal insert 10 upward a distance. Under the action of the first ratchet feeder 2 and the second ratchet feeder 6, the metal strip 1 advances another step, pulling the completed injection-molded metal insert 10 out of the second guide groove 22 of the push plate 3, and at the same time pulling the metal insert 10 to be injected into the second guide groove 22 of the push plate 3 for the next injection molding.

[0042] The ejection mechanism includes a push plate 3 and an ejector pin 5. The push plate 3 is automatically reset by the mold. When the ejector pin on the injection molding machine is withdrawn, the pin plate and the ejection mechanism fixed on the pin plate will automatically reset under the action of the reset spring. The ejection mechanism is installed on the rear mold of the mold and is part of the rear mold. The cavity of the metal insert is opened on the rear mold 9.

[0043] The metal insert 10 is first pushed upward a certain distance by the ejector pin 5 and the push plate 3. The ejector pin 5 stops moving, and the push plate 3 continues to push the metal insert 10 upward a certain distance.

[0044] The push plate 3 is part of the secondary ejection mechanism, which is a common structure on molds and will not be described in detail here. The push plate 3 moves up and down, and the driving force is provided by the ejection mechanism. The ejector rod of the injection molding machine extends into the mold and presses against the needle plate. The ejection mechanism fixed on the needle plate will then move upward and eject the product.

[0045] Figure 1 and Figure 3 In the image, the left end of metal strip 1 is in its pre-injection state, and the right end of metal strip 1 is in its post-injection state.

[0046] This invention provides an automatic continuous injection molding structure for sensor packaging shells. By processing the metal mounting pieces into a chain conveyor for easy transport and collection, the injection mold incorporates a metal strip positioning structure, a secondary ejection mechanism, and a ratchet pulling mechanism. The secondary ejection mechanism features a guide groove for the metal strip. During injection molding, the metal strip advances one step in the guide groove under the action of the ratchet pulling mechanism. After mold closing, the secondary ejection mechanism resets, causing the metal strip to embed into the corresponding mold cavity, initiating injection. After injection molding, the product is ejected in two sections. Under the action of the ratchet pulling mechanism, the strip advances another step for the next injection cycle.

[0047] This invention provides an automated continuous injection molding mold structure for sensor packaging shells, including a metal strip 1, a conveying device, an ejection mechanism, and a positioning structure. Before injection molding, the metal strip 1 is inserted into the mold and adjusted to the appropriate position. Under the reset action of the ejection mechanism and the guiding adjustment of the positioning structure, the metal strip 1 is precisely embedded into the corresponding cavity in the mold. After injection molding, the metal strip 1 is ejected from the mold by the ejection mechanism, and the pulling mechanism then pulls the metal strip 1 one step distance, preparing for the next injection molding. This mold structure realizes automated continuous injection molding production, greatly improving production efficiency, ensuring a safe and reliable production process, and resulting in a high pass rate and good consistency of the injection molded products.

[0048] The metal insert is made in the form of a metal strip 1, with positioning holes machined into the chain portion of the metal strip 1. Before injection molding, the metal strip 1 first passes through the first ratchet feeder 2, then through the guide groove of the push plate 3, and finally through the second ratchet feeder 6. Gears are installed on the ratchet feeders (first ratchet feeder 2 and second ratchet feeder 6), and the positioning holes of the metal strip 1 can mesh with the gears. The ratchet feeders drive the metal strip 1 forward through the rotation of the gears. The push plate 3 includes an upper cover and a base, with a guide groove designed between the upper cover and the base, allowing the metal strip 1 to move within the guide groove of the push plate 3.

[0049] During injection molding, the metal strip 1, the first ratchet feeder 2, the second ratchet feeder 6, and the push plate 3 are reset under the action of the mold ejection mechanism. The positioning holes on the metal strip 1 chain need to be precisely embedded in the positioning pins 4. The metal inserts 10 on the metal strip 1 enter the corresponding cavity in the mold, and the mold begins injection molding.

[0050] After injection molding, the metal strip 1 and the ratchet feeder are ejected a certain distance by the push plate 3 and the ejector pin 5. Due to the mold design with secondary ejection, the metal strip 1 and the ratchet feeder continue to be ejected a certain distance by the push plate 3 to avoid the metal strip 1 rubbing or colliding with the ejector pin 5 during the feeding movement.

[0051] After ejection, the metal strip 1 moves one step under the action of the ratchet feeder 2, pulling the finished injection molded product out of the mold and simultaneously pulling the metal insert to be injection molded into the mold, ready for the next injection, thus completing a complete automated injection molding cycle.

[0052] The entire injection molding process can be completed continuously and automatically without human intervention.

[0053] like Figure 1 An automated continuous injection mold structure for a sensor packaging shell includes a metal strip, a push plate structure, a ratchet feeder, positioning pins, and other common injection mold structures. Any other optimization modifications made to the mold are within the scope of this patent protection.

[0054] like Figure 4 Metal strips are essentially composed of individual metal inserts linked together by a chain. After injection molding, they form the desired product strip, which can then be cut to obtain the final individual injection-molded product. The structure of the injection-molded product can be diverse as needed.

[0055] like Figure 5 The ratchet feeding machine mainly consists of a machine body, a cover plate, and a ratchet. A guide groove for the material strip is designed between the cover plate and the machine body. The metal strip engages with the ratchet in the guide groove, realizing material pulling and feeding. The ratchet feeding machine is just one common material pulling and feeding device; other material pulling and feeding methods are also within the scope of protection of this patent.

[0056] like Figure 6 The push plate, as part of the ejection structure of the mold, is mainly composed of a base and a cover plate. A guide groove for the metal strip is designed between the base plate and the cover plate.

[0057] like Figure 7 The positioning pin is installed inside the rear mold core, and its head is designed with a guide taper to further precisely define the position where the metal strip falls.

[0058] Depending on product requirements, CCD vision inspection equipment can be installed on the mold to automatically monitor abnormal positioning of metal strips and automatically detect defects in injection molded products.

[0059] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic continuous injection molding mold structure for a sensor packaging shell, characterized in that: The device includes a metal strip and an injection mold. The metal strip includes a chain belt with several metal inserts spaced apart along the length of the chain belt. The injection mold includes a rear mold with several cavities for inserting the metal inserts. The rear mold also includes an ejection mechanism for dislodging the molded product from the cavities. Along the conveying direction of the metal strip, the ejection mechanism sequentially includes a first conveying device, a push plate for secondary ejection, and a second conveying device. Both the first and second conveying devices have a first guide groove for the metal strip to pass through. The push plate is provided with a second guide groove for the metal strip to pass through, perpendicular to the conveying direction of the metal strip. Each of the mold cavities is distributed on both sides of the push plate. The push plate includes an upper cover plate and a base, with a second guide groove between the upper cover plate and the base. The chain belt is provided with a plurality of positioning holes for positioning and engaging with the gears of the conveying device and with the rear mold of the mold. Each positioning hole is spaced apart along the length of the chain belt. It also includes a plurality of positioning pins that can extend into the positioning holes for positioning the metal strip. The positioning pins are installed in the mold core of the rear mold, and each positioning pin corresponds to a mold cavity.

2. The automatic continuous injection molding mold structure for sensor packaging shell as described in claim 1, characterized in that: The first conveying device is a first ratchet feeder, and the second conveying device is a second ratchet feeder. Both the first and second ratchet feeders are equipped with gears that drive the metal strip forward. The metal strip is provided with a plurality of positioning holes that can mesh with the gears. Each positioning hole is spaced apart along the length of the chain, and each positioning hole corresponds to a metal insert.

3. The automatic continuous injection molding mold structure for sensor packaging shell as described in claim 2, characterized in that: Both the first ratchet feeder and the second ratchet feeder include a first cover plate and a machine body. A first guide groove is provided between the first cover plate and the machine body. A gear drive shaft is installed on the machine body, and the metal strip meshes with the gear in the first guide groove.

4. The automatic continuous injection molding mold structure for sensor packaging shell as described in claim 1, characterized in that: The ejection mechanism includes an ejector pin that ejects the metal insert from the mold cavity. The ejector pin is located directly below the mold cavity and can extend upward into the mold cavity.

5. The automatic continuous injection molding mold structure for sensor packaging shell as described in claim 4, characterized in that: Each mold cavity corresponds to several ejector pins, and the ejector pins are distributed at intervals along the length of the mold cavity.

6. The automatic continuous injection molding mold structure for sensor packaging shell as described in claim 1, characterized in that: The top of the positioning pin is provided with a guide taper.

7. The automatic continuous injection molding mold structure for sensor packaging shell as described in claim 1, characterized in that: It also includes an inner membrane, on which a plurality of holes are provided corresponding to the mold cavity. The holes correspond one-to-one with the mold cavity, and the holes and the mold cavity together form a mold cavity for injection molding.

8. A method of using the automatic continuous injection molding structure for a sensor packaging shell as described in any one of claims 1-7, characterized in that, Includes the following steps: During injection molding, the metal strip advances one step in the guide groove under the action of the first ratchet feeder and the second ratchet feeder. After the mold is closed, the ejector mechanism is reset, which drives the metal inserts on the metal strip to be embedded into the corresponding mold cavity. The positioning holes on the metal strip chain are precisely embedded into the positioning pins, and injection molding begins. After injection molding is completed, the metal insert is first pushed upward a certain distance by the ejector pin and the push plate together. The ejector pin stops moving, and the push plate continues to push the metal insert upward a certain distance. Under the action of the first ratchet feeder and the second ratchet feeder, the metal strip advances another step, pulling the completed metal insert out of the second guide groove of the pusher plate, and at the same time pulling the metal insert to be injected into the second guide groove of the pusher plate for the next injection.

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