Full-automatic continuous injection molding device for sensor packaging shell and using method thereof

Abstract

The invention relates to a full-automatic continuous injection molding device for a sensor packaging shell and a using method of the full-automatic continuous injection molding device. Comprising an injection mold, the injection mold comprises a mold rear mold provided with a plurality of mold cavities, the mold rear mold is provided with an ejection mechanism used for driving a metal strip to move between the position close to the mold cavities and the position away from the mold cavities, and the ejection mechanism is provided with two sets of guide mechanisms used for guiding feeding and discharging of the metal strip. The two sets of guide mechanisms are located on the two sides of the injection molding area correspondingly, a conveying mechanism is arranged at the discharging end of the rear mold of the mold and comprises a first positioning insert pin, and the first positioning insert pin is connected with a conveying driving assembly driving the first positioning insert pin to drive the metal material belt to move. The conveying mechanism is arranged at the discharging end of the rear mold of the mold, automatic material pulling and feeding of the metal material belt can be achieved, the metal material belt moves under the action of the guiding mechanism, the position accuracy of the metal material belt is guaranteed, the matching accuracy of the metal insert and the mold cavity is high, the injection molding efficiency and the injection molding quality of the packaging shell are improved, the production process is completely reliable, and product consistency is good.

Description

Technical Field

[0001] The invention relates to the technical field of mold injection molding, and in particular to a full-automatic continuous injection molding device for a sensor packaging shell and a use method thereof. Background Art

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

[0003] During the injection molding process, the existing injection molded packaging shell with metal inserts has the problem of poor alignment accuracy between the metal insert and the mold cavity of the mold, resulting in low injection molding production efficiency of the injection molded packaging shell, a certain defective rate, and even safety hazards. Summary of the invention

[0004] In order to solve the above problems, on the one hand, the present invention provides a fully automatic continuous injection molding device for a sensor packaging shell, including an injection mold, the injection mold including a mold back mold, the injection molding area of ​​the mold back mold is provided with a plurality of mold cavities, the mold back mold is provided with an ejection mechanism for driving the metal strip to move between an injection position close to the mold cavity and a conveying position away from the mold cavity, the ejection mechanism is provided with two groups of guide mechanisms for guiding the metal strip to be loaded and unloaded, the two groups of guide mechanisms are respectively located on both sides of the injection molding area, the unloading end of the mold back mold is provided with a conveying mechanism, the conveying mechanism includes a first positioning pin, the first positioning pin is connected to a conveying drive component that drives it to move the metal strip.

[0005] Furthermore, the conveying drive assembly includes an X-axis motion unit for driving the first positioning pin to move in the X-axis direction, and a Z-axis motion unit for driving the first positioning pin to move in the vertical direction, the Z-axis motion unit is arranged on the X-axis motion unit, the first positioning pin is arranged on the Z-axis motion unit, and the X-axis direction is parallel to the conveying direction of the metal strip.

[0006] Furthermore, the X-axis motion unit is also connected to a stroke control unit.

[0007] Furthermore, the conveying mechanism is arranged on a guide mechanism close to a blanking end of the rear mold of the mold.

[0008] Furthermore, the guide mechanism includes a first guide component and a second guide component, the first guide component and the second guide component are arranged on the ejection mechanism, the first guide component is close to the injection molding area, and the second guide component is located at the end of the rear mold of the mold and extends to an end away from the injection molding area.

[0009] Furthermore, the first guide assembly and the second guide assembly include a base plate and a cover plate, wherein the cover plate is disposed on the base plate and a receiving groove for receiving the metal strip is formed therebetween.

[0010] Furthermore, an avoidance groove is provided on the cover plate.

[0011] Furthermore, the ejection mechanism comprises an ejector pin for ejecting the metal insert from the mold cavity, and the ejector pin is arranged directly below the mold cavity and can extend upward into the mold cavity.

[0012] Furthermore, a plurality of second positioning pins are provided in the mold core of the rear mold of the mold, and the second positioning pins are arranged in one-to-one correspondence with the mold cavities. When the ejection mechanism moves to the injection position, the second positioning pins extend into the metal strip.

[0013] On the other hand, the present invention also provides a method for using the fully automatic continuous injection molding device for a sensor packaging shell, using the injection molding device as described above, comprising the following steps:

[0014] Placing the metal strip on the guide mechanism and calibrating the position of the metal strip;

[0015] The ejector mechanism is reset, driving the metal insert on the metal strip to be embedded into the corresponding mold cavity for injection molding;

[0016] After the injection molding is completed, the ejection mechanism drives the metal strip away from the mold cavity. The metal strip moves forward one step under the action of the conveying mechanism, so that the metal insert to be injected on the metal strip is aligned with the mold cavity, and the ejection mechanism is reset to complete the next injection molding.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] 1) The injection molding device provided by the present invention is provided with a conveying mechanism at the unloading end of the rear mold of the mold, and the metal strip can be driven to move by the first positioning pin to realize automatic pulling and feeding of the metal strip, and the metal strip moves under the action of the guide mechanism, so that the metal strip moves in the guide direction, thereby ensuring the position accuracy of the metal strip, the high accuracy of matching between the metal insert and the mold cavity, improving the injection molding efficiency and injection molding quality of the metal insert, and the production process is completely reliable and the product consistency is good.

[0019] 2) In the injection molding device provided by the present invention, a second positioning pin is provided in the mold core of the rear mold, and the second positioning pin can be inserted into the metal strip, so that the metal strip can be accurately positioned in the mold cavity corresponding to the rear mold when it is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the fully automatic continuous injection molding device for the sensor packaging shell provided in Example 1;

[0022] Figure 2 A schematic diagram of the structure of the metal strip used in the fully automatic continuous injection molding device for the sensor packaging shell provided in Example 1;

[0023] Figure 3 A partial schematic diagram of the fully automatic continuous injection molding device for the sensor package shell provided in Example 1 Figure 1 ;

[0024] Figure 4 A partial schematic diagram of the fully automatic continuous injection molding device for the sensor package shell provided in Example 1 Figure 2 ;

[0025] Figure 5 A partial schematic diagram of the fully automatic continuous injection molding device for the sensor package shell provided in Example 1 Figure 3 .

[0026] 1-metal strip; 11-chain belt; 12-metal insert; 13-positioning hole; 14-through hole; 15-groove; 16-injection product; 2-injection mold; 21-mold back mold; 22-gate material; 23-second positioning pin; 3-ejection mechanism; 31-ejection platform; 32-ejector; 4-guide mechanism; 41-first guide assembly; 42-second guide assembly; 43-bottom plate; 44-cover plate; 45-avoidance groove; 46-support; 5-transmission mechanism; 51-first positioning pin; 52-X-axis motion unit; 53-Z-axis motion unit; 54-limiting bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the drawings, the size and relative size of some parts may be enlarged for clarity.

[0028] In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "connection" and "connected" should be interpreted in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of the present invention, terms such as "up", "down", "left", "right", "front", "back", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0030] In addition, in the description of the present invention, the terms "first" and "second" are only used to distinguish in the description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0031] Example 1

[0032] As the instruction manual Figure 1-5 As shown, the present invention provides a fully automatic continuous injection molding device for a sensor packaging shell, including an injection mold 2, wherein the injection mold includes a mold back mold 21, and the injection molding area of ​​the mold back mold 21 is provided with a plurality of mold cavities, and the mold back mold 21 is provided with an ejection mechanism 3 for driving the metal strip 1 to move between an injection position close to the mold cavity and a conveying position away from the mold cavity, and the ejection mechanism 3 is provided with two groups of guide mechanisms 4 for guiding the metal strip 1 to be loaded and unloaded, and the two groups of the guide mechanisms 4 are respectively located on both sides of the injection molding area, and the unloading end of the mold back mold 21 is provided with a conveying mechanism 5 for driving the metal strip 1 to be loaded and unloaded, and the conveying mechanism 5 includes a first positioning pin 51, and the first positioning pin 51 is connected to a conveying drive component that drives it to drive the metal strip 1 to move.

[0033] Specifically, the middle part of the mold back mold 21 is the injection molding area, and the two ends of the mold back mold 21 are the loading end and the unloading end, that is, the loading end and the unloading end are respectively located at the two ends of the injection molding area, and the direction from the loading end to the unloading end is the conveying direction of the metal strip. The metal strip 1 passes through the injection molding area from the loading end and extends to the unloading end. The metal insert on the metal strip moves from the loading end to the injection molding area. After the injection molding is completed in the mold cavity, the injected metal insert moves to the unloading end to complete the injection molding of the metal insert. One group of guide mechanisms 4 is set close to the loading end for feeding guidance, and the other group of guide mechanisms 4 is set close to the unloading end for unloading positioning. The metal strip 1 moves under the action of the conveying mechanism 5 at the unloading end to complete the loading and unloading operations of the metal strip 1.

[0034] Specifically, the ejection mechanism 3 can be raised and lowered in the vertical direction. During injection molding, the ejection mechanism 3 moves downward to reset and moves to the injection molding position, driving the guide mechanism 4 and the metal strip 1 to move downward. The metal strip 1 located in the injection molding area moves to the mold cavity of the rear mold 21 of the mold for injection molding. After the injection molding is completed, the guide mechanism 4 and the metal strip 1 move upward under the action of the ejection mechanism 3, away from the mold cavity, and move to the transmission position. At this time, the metal strip 1 is away from other mechanisms, and the transmission mechanism 5 pulls the metal strip 1 to realize the loading and unloading of the metal strip 1. Repeat the above operation to complete the next injection molding. The injection molding device of the present application realizes automated continuous injection molding production, greatly improves production efficiency, and the production process is stable and reliable. The injection molding product has a high pass rate and good consistency.

[0035] Preferably, the ejection mechanism 3 includes an ejection platform 31 and an ejection drive unit, the ejection platform 31 is arranged on the ejection drive unit, and the guide mechanism 4 is arranged on the ejection platform 31. The ejection drive unit can be a conventional linear motion structure such as a cylinder, a hydraulic rod, an electric linear module or a screw.

[0036] Preferably, as shown in the attached instructions Figure 2As shown, it is a schematic diagram of the structure of the metal strip 1. The metal strip 1 includes a chain strip 11 and metal inserts 12 arranged in sequence along the length direction of the chain strip 11. One end of the metal insert 12 is connected to the chain strip 11. After the injection molding is completed, the injection molded product 16 is obtained. The connection between the metal insert 12 and the chain strip 11 is cut to obtain a single injection molded product. A plurality of metal inserts 12 are integrated on the chain strip 11. Under the action of the conveying mechanism 5, the metal inserts 12 can be automatically loaded and unloaded. The spacing between adjacent metal inserts 12 is determined according to the position of the mold cavity, and the metal inserts 12 located in the injection molding area are arranged in a one-to-one correspondence with the mold cavity to ensure that during injection molding, the metal inserts 12 to be injected are embedded in the mold cavity one-to-one for injection molding operation. The chain strip 11 is provided with a plurality of positioning holes 13, and the positioning holes 13 are arranged in a one-to-one correspondence with the metal inserts 12, so that the metal strip 1 can be positioned during the injection molding and loading and unloading process to ensure the position accuracy of the metal strip.

[0037] Preferably, the metal insert 12 is provided with a through hole 14 , and the through hole 14 can also be used to position the metal strip 1 during injection molding, and the metal insert 12 is injection molded at one end away from the through hole 14 .

[0038] Preferably, a group of metal inserts 12 may be respectively provided on both sides of the chain belt 11 , and the two groups of metal inserts 12 are provided in a one-to-one correspondence, which can improve the injection molding efficiency.

[0039] In this embodiment, a metal insert 12 is provided on one side of the chain belt 11, and the injection molding device can perform injection molding on two metal strips 1 at the same time. The metal inserts 12 of the two metal strips 1 are arranged one by one, which is convenient for loading and unloading the metal strips 1. A plurality of grooves 15 are provided on one side of the chain belt 11 away from the metal insert 12, and the grooves 15 are arranged in sequence along the length direction of the chain belt 11. The grooves 15 and the metal inserts 12 are arranged in a staggered manner.

[0040] The injection mold 2 also includes an upper mold (not shown in the figure) and a sprue material 22. The upper mold is arranged above the injection area of ​​the rear mold 21 and is enclosed with the rear mold 21 to form a mold cavity. The mold cavity is arranged in the mold cavity. The sprue material 22 is arranged on the inner side of the upper mold. The discharge port of the sprue material 22 corresponds to the mold cavity one by one, and is used to inject material into the mold cavity after the mold is closed to complete the injection molding.

[0041] In an optimized implementation mode, the conveying mechanism 5 is used to pull the metal strip 1 and complete the loading and unloading of the metal strip 1. It can be set on the rear mold 21 of the mold, or it can be set on the ejection mechanism 3. The conveying mechanism 5 includes a first positioning pin 51 and a transmission drive assembly. The first positioning pin 51 is connected to the output end of the transmission drive assembly. The transmission drive assembly can adjust the spatial position of the first positioning pin 51. The first positioning pin 51 is clearance-matched with the positioning hole 13 of the metal strip 1. When the ejection mechanism 3 moves to the conveying position, the transmission drive assembly drives the first positioning pin 51 to connect with the metal strip 1 and move forward one step. Specifically, after completing one injection molding, the ejection mechanism 3 drives the metal strip 1 to move to the conveying position, the first positioning pin 51 is inserted into the positioning hole 13 of the metal strip 1, and then moves forward one step under the drive of the transmission drive assembly, driving the metal strip 1 to move forward, and the metal insert 12 that has been completed by injection molding is moved out of the injection molding area. The metal insert 12 to be injected at the rear moves forward to the injection molding area to start the next injection molding. The distance of one of the steps is related to the number of metal inserts 12 to be injected each time, so as to ensure that the metal inserts 12 on the metal strip 1 can be continuously injected. The first positioning pin 51 cooperates with the positioning hole 13, and the connection reliability between the two is good, so that the transmission drive assembly drives the metal strip 1 to move more smoothly and with higher forward accuracy, so that the metal insert 12 can be more accurately embedded in the mold cavity.

[0042] Optimize the implementation method, as shown in the attached manual Figure 4 As shown, the transmission drive assembly includes an X-axis motion unit 52 for driving the first positioning pin 51 to move in the X-axis direction, and a Z-axis motion unit 53 for driving the first positioning pin 51 to move in the vertical direction. The Z-axis motion unit 53 is arranged on the X-axis motion unit 52, and the first positioning pin 51 is arranged on the Z-axis motion unit 53. The X-axis direction is parallel to the transmission direction of the metal strip 1. When the metal strip 1 moves to the transmission position, the first positioning pin 51 can be inserted into the corresponding positioning hole 13, and the X-axis motion unit 52 moves to the right, thereby driving the metal strip 1 to move forward a step, and pulling the finished injection molded product out of the injection molding area, and then the Z-axis motion unit 53 moves upward, away from the positioning hole 13 of the metal strip 1, and the X-axis motion unit 52 resets to the left, and finally the Z-axis motion unit 53 resets downward, and the first positioning pin 51 is reinserted into the corresponding positioning hole 13 of the metal strip 1, waiting for the next material pulling action. Of course, during use, a Y-axis motion unit for adjusting the Y-axis direction of the first positioning pin 51 may also be provided to adjust the spatial position of the first positioning pin 51 .

[0043] Preferably, the number of first positioning pins 51 corresponding to each metal strip 1 is at least two, and the first positioning pins 51 are sequentially arranged at intervals along the conveying direction of the metal strip 1. The spacing between adjacent first positioning pins 51 is equal to the spacing between adjacent positioning holes 13, and multiple first positioning pins 51 are used to cooperate with the metal strip 1 to improve the material pulling effect.

[0044] Preferably, in order to ensure the accuracy of the step distance that the X-axis motion unit 52 drives the metal strip forward, the X-axis motion unit 52 is also connected to a stroke control unit, which can adjust the motion stroke of the X-axis motion unit 52 and calibrate the initial set layout, so that the X-axis motion unit 52 can drive the first positioning pin 51 to accurately insert into the positioning hole 13 of the metal strip 1, and then drive the metal strip 1 to move a calibration step distance, so that the metal insert 12 to be injected on the metal strip 1 is aligned with the mold cavity.

[0045] The X-axis motion unit 52 and the Z-axis motion unit 53 may be conventional linear motion structures such as cylinders, hydraulic rods, electric linear modules or screws. In this embodiment, the X-axis motion unit 52 and the Z-axis motion unit 53 are both cylinders.

[0046] In an optimized implementation manner, the conveying mechanism 5 is arranged on the guide mechanism 4 close to the unloading end of the rear mold 21 of the mold, and the conveying mechanism 5 can move with the ejection mechanism 3.

[0047] Preferably, the first positioning pin 51 can move along the guide mechanism 4, and a limit plate is arranged on the guide mechanism 4 provided with a conveying mechanism 5, and the limit plate is located at the end of the stroke of the first positioning pin 51 moving along the X-axis direction (the end away from the injection molding area). When the first positioning pin 51 moves to the limit plate, the metal insert 12 to be injected on the metal strip 1 corresponds one by one to the mold cavity.

[0048] Preferably, as shown in the attached instructions Figure 4 As shown, the conveying mechanism 5 also includes a limiting bolt 54, and the limiting bolt 54 is installed on the guide mechanism 4 through a support, and the axis of the limiting bolt 54 is parallel to the X-axis. The limiting bolt 54 is threadedly connected to the support and can be adjusted in the X-axis direction. The limiting bolt 54 is arranged corresponding to the Z-axis motion unit 53, and the limiting bolt 54 is located at one end close to the injection molding area. By adjusting the position of the limiting bolt 54, the movement stroke of the X-axis motion unit 52 can be controlled, thereby ensuring the accuracy of the forward step of the metal strip in the X-axis direction.

[0049] Preferably, the chain belt 11 is provided with a plurality of labels along the length direction of the chain belt 11, and the spacing between adjacent labels is based on the metal strip 1 advancing one step, that is, the spacing between adjacent labels is adapted to the length of the metal strip processed by the injection mold each time. The limiting plate is provided with an image acquisition device, which can acquire the image of the metal strip and identify the labels on the chain belt, and feed back the image data to the stroke control unit for determining the position of the chain belt and calibrating the set step of the X-axis motion unit 52. The actual step of the X-axis motion unit 52 is obtained by adjusting the stroke control unit, and the first positioning pin 51 is driven to move the actual step, so that the first positioning pin 51 can be accurately inserted into the positioning hole 13 of the chain belt 11, and drive the chain belt 11 to move forward to pull the material. The first positioning pin 51 stops moving when it moves to the limiting plate. At this time, the metal inserts to be injected on the metal strip 1 are aligned one by one with the mold cavity, and the next injection molding can be performed.

[0050] In an optimized implementation mode, the guide mechanism 4 includes a first guide component 41 and a second guide component 42. The first guide component 41 and the second guide component 42 are arranged on the ejection mechanism 3. The first guide component 41 is close to the injection molding area, and the second guide component 42 is located at the end of the mold back mold 21 and extends to the end away from the injection molding area. Specifically, two groups of guide mechanisms 4 are respectively arranged on both sides of the injection molding area, and the two second guide components 42 are respectively used for the loading and unloading guides of the metal strip 1. The conveying mechanism 5 is arranged on the second guide component 42 at the unloading end; the two first guide components 41 are respectively arranged on both sides of the injection molding area, so that the metal strip 1 can accurately enter the injection molding area and align with the mold cavity. A plurality of guide components are arranged on the ejection mechanism 3 along the conveying direction of the metal strip, which can avoid the metal strip 1 from deflecting during movement and ensure the high precision of the metal strip 1 and the mold cavity.

[0051] Specifically, a limiting groove is provided on the mold rear mold 21 , and the first guide assembly 41 is disposed in the limiting groove and can move up and down in the limiting groove under the drive of the ejection mechanism 3 .

[0052] In an optimized implementation mode, the first guide assembly 41 and the second guide assembly 42 include a base plate 43 and a cover plate 44, wherein the cover plate 44 is covered on the base plate 43 and a receiving groove for receiving the metal strip 1 is formed therebetween, wherein the receiving groove is provided on the cover plate 44 and / or the base plate 43, wherein the metal strip 1 passes through the receiving groove and cooperates with the gap in the receiving groove, wherein the receiving groove can limit the movement of the metal strip 1 in the longitudinal direction and the vertical direction.

[0053] In an optimized implementation mode, at least a portion of the cover plate 44 is provided with an avoidance groove 45, the length direction of the avoidance groove 45 is parallel to the conveying direction of the metal strip, and the avoidance groove 45 corresponds to the chain belt 11 of the metal strip 1. In this embodiment, the avoidance groove 45 is provided on the cover plate 44 of the second guide assembly 42, the conveying drive assembly is arranged on the second guide assembly 42 at the unloading end, the X-axis motion unit 52 is arranged on the cover plate 44, the first positioning pin 51 corresponds to the avoidance groove 45, and the avoidance groove 45 is provided on the cover plate 44, so that the first positioning pin 51 can cooperate with the positioning hole 13 of the metal strip 1, and the metal strip 1 is supported on the base 43, which also facilitates the first positioning pin 51 to be inserted into the positioning hole 13.

[0054] Preferably, the base 43 is mounted on the ejection platform 31 of the ejection mechanism 3 via a support 46. The guide components are arranged at the same height.

[0055] Optimize the implementation method, as shown in the attached manual Figure 5 As shown, the ejection mechanism 3 is also provided with an ejector pin 32 for ejecting the metal insert 12 out of the mold cavity. The ejector pin 32 is arranged directly below the mold cavity and can extend upward into the mold cavity. Each mold cavity is provided with at least one ejector pin 32. After the injection molding is completed, the ejection mechanism 3 moves upward, driving the ejector pin 32 to move upward, thereby ejecting the injection molded product out of the mold cavity.

[0056] Preferably, the ejection mechanism 3 is preferably a secondary ejection mechanism. After the injection molding is completed, the metal strip 1, the ejector pin 32 and the guide mechanism 4 are first ejected for a distance under the action of the ejection mechanism 3, and then the metal strip 1, the ejector pin 32 and the guide mechanism 4 will continue to be ejected for a distance to avoid the metal strip from rubbing against or colliding with other mechanisms of the injection mold during the pulling movement.

[0057] In an optimized implementation mode, a plurality of second positioning pins 23 are further provided in the mold core of the rear mold 21 of the mold. The second positioning pins 23 are arranged one by one in correspondence with the mold cavities. When the ejection mechanism 3 moves to the injection molding position, the second positioning pins 23 extend into the metal strip 1. Each of the second positioning pins 23 is arranged in sequence along the length direction of the chain belt 11. The second positioning pins 23 are arranged corresponding to the positioning holes 13 of the metal strip 1. When the ejection mechanism 3 moves to the injection molding position, the second positioning pins 23 can be inserted into the positioning holes 13; or, the second positioning pins 23 correspond to the through holes 14 of the metal insert 12. When the ejection mechanism 3 moves to the injection molding position, the second positioning pins 23 can be inserted into the through holes 14. During injection molding, the metal strip 1 is reset under the action of the ejection mechanism, and the second positioning pins 23 are just inserted into the through holes 14 of the metal insert 12. At this time, the metal insert on the metal strip 1 is just embedded in the corresponding mold cavity, and the mold starts injection molding. The second positioning pin 23 is loosely matched with the through hole 14 .

[0058] In an optimized implementation method, the head of the second positioning pin 23 is designed with a tapered guide, so that the metal strip 1 can be accurately positioned in the corresponding cavity of the mold when it is reset, thereby improving the injection molding accuracy and ensuring a high qualified rate and good consistency of the injection molded products.

[0059] In an optimized implementation method, a CCD visual inspection device is provided on the rear mold of the mold to collect images before and after injection molding, so as to automatically monitor abnormal positioning of the metal strip and automatically detect defects of the injection molded product; if the position offset of the metal strip cannot be resolved by the stroke control unit, the metal strip can be repositioned through manual intervention.

[0060] In an optimized implementation mode, a forced reset mechanism is also provided on the rear mold of the mold to prevent the metal insert from being not completely reset, resulting in mold compression.

[0061] Example 2

[0062] The present invention also provides a method for using a fully automatic continuous injection molding device for a sensor packaging shell, using the injection molding device described in Example 1, comprising the following steps:

[0063] Placing the metal strip 1 on the guide mechanism 4 and calibrating the position of the metal strip 1;

[0064] The ejection mechanism 3 is reset, driving the metal insert 12 on the metal strip 1 to be embedded into the corresponding mold cavity to perform the injection molding operation;

[0065] After the injection molding is completed, the ejection mechanism 3 drives the metal strip 1 away from the mold cavity. The metal strip 1 moves forward a step under the action of the conveying mechanism 5, so that the metal insert 12 to be injected on the metal strip 1 is aligned with the mold cavity, and the ejection mechanism 3 is reset to complete the next injection molding.

[0066] Specifically, before injection molding, the ejection mechanism 3 is located at the conveying position, and the metal strip 1 is sequentially passed through the second guide assembly 42, the first guide assembly 41, the injection molding area, the first guide assembly 41 and the second guide assembly 42, and the metal strip 1 is adjusted to the target position, and the conveying mechanism is adjusted to the target position. At this time, the metal inserts to be injected correspond to the mold cavities one by one, and the first positioning pins 51 are inserted into the positioning holes 13 of the chain belt 11. During injection molding, the metal strip 1 and each guide assembly are reset under the action of the ejection mechanism 3, the second positioning pins are inserted into the through holes 14 of the metal inserts 12, the part of the metal insert to be injected enters the mold cavity, the upper mold of the mold is closed, and injection molding begins. After the injection molding is completed, the upper mold of the mold is removed, and the ejection mechanism 3 moves upward. The ejector pin 32 can act on the metal insert 12 to eject the metal insert 12 out of the mold cavity. The metal strip 1 and the guide components move upward with the ejection mechanism 3 until there is a gap between the metal strip 1 and other mechanisms to prevent the metal strip 1 from rubbing or colliding with other mechanisms during the material pulling movement. After the ejection is completed, the first positioning pin 51 is inserted into the positioning hole 13 of the chain belt 11, and the X-axis motion unit 52 moves to the right, thereby driving the metal strip 1 forward by one step, pulling the finished injection molded product out of the injection molding area, and then the Z-axis motion unit 53 moves upward, away from the positioning hole 13 of the metal strip 1, and the X-axis motion unit 52 resets to the left, and finally the Z-axis motion unit 53 resets downward, and the first positioning pin 51 is reinserted into the corresponding positioning hole 13 of the metal strip 1, waiting for the next material pulling action.

[0067] Those skilled in the art will appreciate that the present invention can be implemented in many other specific forms without departing from the spirit and scope of the present invention. Although embodiments of the present invention have been described, it should be understood that the present invention should not be limited to this embodiment, and those skilled in the art can make changes and modifications within the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A fully automatic continuous injection molding device for a sensor package shell, comprising an injection mold, wherein the injection mold comprises a mold back mold, and the injection molding area of ​​the mold back mold is provided with a plurality of mold cavities, characterized in that: The mold back mold is provided with an ejection mechanism for driving the metal strip to move between an injection position close to the mold cavity and a conveying position away from the mold cavity. The ejection mechanism is provided with two groups of guide mechanisms for guiding the metal strip to be loaded and unloaded. The two groups of guide mechanisms are respectively located on both sides of the injection molding area. The unloading end of the mold back mold is provided with a conveying mechanism. The conveying mechanism includes a first positioning pin, and the first positioning pin is connected to a conveying drive component that drives it to move the metal strip.

2. The fully automatic continuous injection molding device for sensor packaging shell according to claim 1 is characterized in that: The conveying drive assembly includes an X-axis motion unit for driving the first positioning pin to move in the X-axis direction, and a Z-axis motion unit for driving the first positioning pin to move in the vertical direction. The Z-axis motion unit is arranged on the X-axis motion unit, and the first positioning pin is arranged on the Z-axis motion unit. The X-axis direction is parallel to the conveying direction of the metal strip.

3. The fully automatic continuous injection molding device for sensor packaging shell according to claim 2 is characterized in that: The X-axis motion unit is also connected to a stroke control unit.

4. The fully automatic continuous injection molding device for sensor packaging shell according to claim 1 is characterized in that: The conveying mechanism is arranged on a guide mechanism close to the unloading end of the rear mold of the mold.

5. The fully automatic continuous injection molding device for sensor packaging shell according to claim 1 is characterized in that: The guide mechanism includes a first guide component and a second guide component, the first guide component and the second guide component are arranged on the ejection mechanism, the first guide component is close to the injection molding area, and the second guide component is located at the end of the rear mold of the mold and extends to an end away from the injection molding area.

6. The fully automatic continuous injection molding device for sensor packaging shell according to claim 5, characterized in that: The first guide assembly and the second guide assembly include a base plate and a cover plate, wherein the cover plate is disposed on the base plate and a receiving groove for receiving the metal strip is formed therebetween.

7. The fully automatic continuous injection molding device for sensor packaging shell according to claim 6, characterized in that: The cover plate is provided with an avoidance groove.

8. The fully automatic continuous injection molding device for sensor packaging shell according to claim 1, characterized in that: The ejection mechanism comprises an ejector pin for ejecting the metal insert out of the mold cavity. The ejector pin is arranged directly below the mold cavity and can extend upward into the mold cavity.

9. The fully automatic continuous injection molding device for sensor packaging shell according to claim 1, characterized in that: A plurality of second positioning pins are also provided in the mold core of the rear mold of the mold. The second positioning pins are arranged in one-to-one correspondence with the mold cavities. When the ejection mechanism moves to the injection position, the second positioning pins extend into the metal strip.

10. A method for using a fully automatic continuous injection molding device for a sensor packaging shell, characterized in that: The injection molding device according to any one of claims 1 to 9 comprises the following steps: Placing the metal strip on the guide mechanism and calibrating the position of the metal strip; The ejector mechanism is reset, driving the metal insert on the metal strip to be embedded into the corresponding mold cavity for injection molding; After the injection molding is completed, the ejection mechanism drives the metal strip away from the mold cavity. The metal strip moves forward one step under the action of the conveying mechanism, so that the metal insert to be injected on the metal strip is aligned with the mold cavity, and the ejection mechanism is reset to complete the next injection molding.

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