Injection molding material feeding device

Abstract

The present invention discloses a material strip feeding device for injection molding, comprising: a frame connected to an external injection mold, a supporting and positioning mechanism arranged on the frame and used to support the position of the material strip, an upper cover assembly arranged on the frame and used to cover the material strip on a supporting bottom plate, a pulling mechanism arranged on the frame, a manual alignment assembly arranged on the frame, and a pulling and positioning assembly arranged on the frame; through the above manner, the present invention can directly drive the material strip to feed the material and ensure the stability of the material strip feeding.

Description

Technical Field

[0001] The invention relates to the field of injection molding, in particular to a material belt feeding device for injection molding. Background Art

[0002] In the current roll-to-roll connector metal terminal injection molding process, the feeding device is generally composed of a servo pulling gear mechanism fixed in the discharge direction of the injection mold to pull the auxiliary carrier tape of the roll material tape and send the metal terminals to the injection mold for injection molding.

[0003] In order to facilitate the pulling of the coiled material strip, the current pulling mechanism requires the coiled material strip to consist of two parts: a metal terminal and an auxiliary carrier with process holes. The pulling mechanism pulls the strip through the auxiliary carrier. This method is suitable for metal terminals made of expensive precious metal materials such as copper or copper alloy. The metal terminals and the auxiliary carrier are made of different materials (usually the auxiliary carrier is a steel strip). The metal terminals are then connected and fixed to the auxiliary steel strip. This method requires more than two processing steps, wasting time and manpower.

[0004] Another method is to stamp out the metal terminals and the auxiliary carrier tape simultaneously on the entire metal strip. This method is only applicable to ordinary metal materials of general price. In addition, because the metal terminals and the auxiliary carrier tape are stamped out simultaneously on the entire metal strip, a large amount of material will be wasted, increasing production costs. Summary of the Invention

[0005] The main technical problem solved by the present invention is to provide a material belt feeding device for injection molding, which can directly drive the material belt to feed the material and ensure the stability of the material belt feeding.

[0006] In order to solve the above technical problems, the present invention adopts a technical solution: providing an injection molding material belt feeding device, comprising: a frame connected to an external injection mold;

[0007] A support and positioning mechanism provided on the frame and used to support the position of the material strip, the support and positioning mechanism comprising a support base plate for supporting the material strip and at least one set of positioning adjustment components provided at the end of the support base plate, the positioning adjustment components comprising at least two positioning adjustment blocks provided opposite to each other, the positioning adjustment blocks being used to adjust the position of the material strip entering the support base plate relative to the support base plate;

[0008] An upper cover assembly is provided on the frame and is used to cover the material strip on the support base. The upper cover assembly includes a cover plate, an upper cover driving member connected to the cover plate and driving the cover plate to move away from or closer to the support base. A material pulling channel is formed between the cover plate and the support base. The material pulling channel is used to limit the position of the material strip on the support base. The upper cover driving member is provided on the frame;

[0009] A material pulling mechanism is provided on the frame, and the material pulling mechanism includes a material pulling drive member provided on the frame, a lifting assembly provided on the material pulling drive member, and a pulling needle provided on the lifting assembly. The lifting assembly drives the pulling needle to move toward or away from the material strip, so that the pulling needle and the material strip are inserted. The material pulling drive member drives the pulling needle to move, so that the pulling needle pulls the material strip to move.

[0010] A manual alignment assembly is provided on the frame, the manual alignment assembly comprising a manual alignment mounting block provided on the cover plate, a manual alignment positioning pin provided on the manual alignment mounting block for correcting the position of the material strip on the supporting base plate, a manual alignment elastic member provided between the manual alignment positioning pin and the manual alignment mounting block for supporting the manual alignment positioning pin and forcing the manual alignment positioning pin away from the supporting base plate, and a manual push plate connected to an end of the manual alignment positioning pin away from the cover plate to facilitate pressing the manual alignment positioning pin;

[0011] A material pulling positioning assembly is arranged on the frame, and the material pulling positioning assembly includes a material pulling positioning drive member arranged on the frame and a material pulling positioning needle arranged on the material pulling positioning drive member. The material pulling positioning needle is arranged toward the supporting base plate and is used to limit the position of the material strip on the supporting base plate to prevent the material strip from being displaced.

[0012] Preferably, a connecting plate is connected to one end of the frame close to the injection mold, and a connecting block is connected to the movable mold of the external injection mold. The connecting plate is provided with a connecting hole that matches the connecting block, and the connecting plate is connected to the external injection molding module through the connecting block.

[0013] Preferably, the support base plate and the cover plate are both provided with corresponding pulling holes for inserting the manual alignment positioning needles, the material pulling positioning needles and the pulling needles, so that the manual alignment positioning needles, the material pulling positioning needles and the pulling needles can cooperate with the material strip.

[0014] Preferably, both ends of the supporting base are provided with a plurality of first positioning adjustment holes for adjusting the position of the positioning adjustment block on the supporting base, and the positioning adjustment block is provided with second positioning adjustment holes corresponding to the first positioning adjustment holes. An adjustment channel connected to the material pulling channel and used to adjust the position of the material strip entering the material pulling channel is formed between the two relative positioning adjustment blocks, and a makeshift groove is provided on the lower side of the relative positioning adjustment blocks for the material strip to enter the adjustment channel.

[0015] Preferably, the jacking assembly includes a jacking drive member arranged on the material pulling drive member and a jacking plate connected to the jacking drive member, a switching assembly is arranged on the jacking plate, and the pulling needle is arranged on the switching assembly.

[0016] Preferably, the switching assembly includes a switching drive connected to the lifting plate and a switching needle plate connected to the switching drive, and the pull pin is arranged on the switching needle plate.

[0017] Preferably, the support block connected to one end of the external injection mold close to the connecting plate is provided with a sliding assembly slidably connected to the support block, and the sliding assembly is connected to the connecting plate.

[0018] Preferably, the manual alignment positioning needle includes a first connecting part, a first limiting part and a first needle tip part connected in sequence, the first connecting part is connected to the manual push plate, the manual alignment mounting block is provided with a first step hole that cooperates with the first limiting part, and is used to limit the range of motion of the first limiting part, one end of the manual alignment elastic part is abutted against the bottom surface of the first step hole, and the other end is abutted against the side of the first limiting part close to the first step hole.

[0019] Preferably, the material pulling positioning needle includes a second limiting portion and a second needle tip portion, the material pulling positioning drive member is connected to the first material pulling positioning block, the first material pulling positioning block is detachably connected to the second material pulling positioning block, and the second material pulling positioning block is provided with a second step hole that cooperates with the material pulling positioning needle and allows the second needle tip portion of the material pulling positioning needle to pass through.

[0020] Preferably, at least two groups of manual alignment components, material pulling and positioning components, and pulling needles are provided to accommodate material strips of different specifications.

[0021] The beneficial effects of the present invention are: through two relatively arranged positioning adjustment blocks, the material strip is guided into the supporting base plate to avoid large deviations, and the upper cover driving member makes the cover plate separable from the supporting base plate, so that it is convenient for clearing and maintenance in the event of material jamming, and the material strip is fed by the pull needle inserted into the gap between the pins on both sides of the material strip, and driven by the material pulling driving member, and the starting position of the material strip is adjusted by the manual alignment needle to avoid the mismatch between the position of the pull needle and the position of the pins of the material strip. When the material strip stops being punched, the position of the material strip is limited by the pull positioning needle to prevent the material strip from having positional deviations relative to the supporting base plate during the punching process, which causes the problem of inability to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the positional relationship between an injection molding material feeding device and an external injection mold of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of an injection molding material feeding device of the present invention;

[0024] Figure 3 yes Figure 2 A magnified schematic diagram of the middle part A;

[0025] Figure 4 This is a structural schematic diagram of a material pulling mechanism of a material belt feeding device for injection molding according to the present invention;

[0026] Figure 5It is a cross-sectional view of a manual alignment component of a material belt feeding device for injection molding according to the present invention;

[0027] Figure 6 This is a structural schematic diagram of a material pulling and positioning assembly of a material belt feeding device for injection molding according to the present invention;

[0028] Figure 7 The present invention is a structural schematic diagram of a material pulling positioning needle, a first material pulling positioning block and a second material pulling positioning block of a material belt feeding device for injection molding.

[0029] The markings of the components in the accompanying drawings are as follows:

[0030] 11. Support base plate; 111. First positioning adjustment hole; 12. Positioning adjustment block; 121. Second positioning adjustment hole; 123. Giving groove;

[0031] 2. Upper cover assembly; 21. Cover plate; 22. Upper cover drive component; 23. Material pulling channel;

[0032] 3. Material pulling mechanism; 31. Material pulling drive member; 32. Pulling needle; 33. Lifting drive member; 34. Lifting plate;

[0033] 35. Switch the drive element; 36. Switch the needle plate;

[0034] 4. Manual alignment assembly; 41. Manual alignment mounting block; 411. First stepped hole; 42. Manual alignment positioning pin; 421. First connecting portion; 422. First limiting portion; 423. First needle tip; 43. Manual alignment elastic member; 44. Manual push plate;

[0035] 5. Material pulling positioning assembly; 51. Material pulling positioning drive member; 52. Material pulling positioning needle; 521. Second limiting portion; 522. Second needle tip; 53. First material pulling positioning block; 54. Second material pulling positioning block; 541. Second stepped hole;

[0036] 6. Frame; 61. Connecting plate; 62. Connecting block; 63. Support block; 64. Slide rail; 65. Slider;

[0037] 7. Pull the material through the hole. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Physical quantities in formulas, unless otherwise noted, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] Example:

[0042] refer to Figure 1-Figure 3 A material strip feeding device for injection molding comprises: a frame 6 connected to an external injection mold, a support and positioning mechanism provided on the frame 6 and used to support the position of the material strip, the support and positioning mechanism comprising a support base plate 11 for supporting the material strip and at least one set of positioning adjustment components provided at the end of the support base plate 11, the support base plate 11 being bolted to the frame 6, the positioning adjustment component comprising at least two oppositely arranged positioning adjustment blocks 12, the positioning adjustment blocks 12 being used to adjust the position of the material strip entering the support base plate 11 relative to the support base plate 11;

[0043] Both ends of the supporting base plate 11 are provided with a plurality of first positioning adjustment holes 111 for adjusting the position of the positioning adjustment block 12 on the supporting base plate 11. The positioning adjustment block 12 is provided with second positioning adjustment holes 121 corresponding to the first positioning adjustment holes 111. The plurality of first positioning adjustment holes 111 are not at the same horizontal position. The first positioning adjustment holes 111 can be threaded holes. Bolts are passed through the second positioning adjustment holes 121 on the positioning adjustment block 12 and are threadedly connected to the first positioning adjustment holes 111 to fix the position of the positioning adjustment block 12. By threading the two relative positioning adjustment blocks 12 on different first positioning adjustment holes 111, the distance between the two relative positioning adjustment blocks 12 can be adjusted to adapt to material strips of different sizes and models.

[0044] An upper cover assembly 2 is provided on the frame 6 and is used to cover the material belt on the support base plate 11. The upper cover assembly 2 includes a cover plate 21, an upper cover driving member 22 connected to the cover plate 21 and driving the cover plate 21 to move away from or close to the support base plate 11. The upper cover driving member 22 can be a cylinder, an oil cylinder, a hydraulic cylinder or a linear module, etc. A pulling channel 23 is formed between the cover plate 21 and the support base plate 11 to accommodate the material belt. At the same time, the pulling channel 23 is used to limit the position of the material belt on the support base plate 11. The upper cover driving member 22 is connected to the frame 6 by bracket bolts. When the support base plate 11 is stuck, the cover plate 21 and the support base plate 11 are separated by the upper cover driving member 22, thereby facilitating the arrangement and maintenance of the material belt on the support base plate 11;

[0045] An adjustment channel is formed between the two opposing positioning adjustment blocks 12 and is connected to the material pulling channel 23 for adjusting the position of the material strip entering the material pulling channel 23. A clearance groove 123 is opened on the lower side of the opposing positioning adjustment blocks 12 for the material strip to enter the adjustment channel. The position of the material strip is corrected by the two opposing positioning adjustment blocks 12 and enters the material pulling channel 23, thereby further stabilizing the position of the material strip and reducing the position deviation of the material strip on the supporting base plate 11.

[0046] In order to further adapt to material strips of different sizes and models, the clearance groove 123 can be opened as a step-shaped clearance groove 123 to adapt to material strips of different heights.

[0047] refer to Figure 1 and Figure 4 , a material pulling mechanism 3 is provided on the frame 6, and the material pulling mechanism 3 includes a material pulling drive 31 bolted to the frame 6, a lifting assembly provided on the material pulling drive 31 and a pulling needle 32 provided on the lifting assembly, the lifting assembly drives the pulling needle 32 to move toward or away from the material strip, thereby inserting it between adjacent pins on both sides of the material strip, the material pulling drive 31 drives the pulling needle 32 to move, thereby pulling the material strip away from the external injection mold, and then continuously feeding the material strip to the external injection mold, and the material strip is driven forward through the cooperation of the lifting assembly and the material pulling drive 31. The material pulling drive 31 can be a linear module. In order to adapt to material strips of different specifications, multiple groups of pulling needles 32 can be provided. Since the widths of different material strips are different, the spacing between the pulling needles 32 in different groups also varies accordingly;

[0048] The jacking assembly includes a jacking drive member 33 provided on the material pulling drive member 31 and a jacking plate 34 connected to the jacking drive member 33. A switching assembly is provided on the jacking plate 34. The pulling pin 32 is provided on the switching assembly. The switching assembly includes a switching drive member 35 connected to the jacking plate 34 and a switching needle plate 36 connected to the switching drive member 35. The pulling pin 32 is provided on the switching needle plate 36. The jacking drive member 33 can be an air cylinder, an oil cylinder, a hydraulic cylinder or a linear module, etc., so that the jacking drive member 33 drives the jacking plate 34 to move closer to or away from the material strip, and then the pulling pin 32 is inserted into or out of between the pins on both sides of the material strip;

[0049] In order to adapt to different types of material strips, multiple groups of pull pins 32 for different types of material strips can be set on the switching needle plate 36. Different types of material strips have different differences in width, so pull pins 32 with different spacings can adapt to different types of material strips. When different pull pins 32 are needed, it is only necessary to switch the drive part 35 to control the position of the switching needle plate 36 to move the corresponding pull pin 32 to the bottom of the material strip. The switching drive part 35 can be a cylinder, an oil cylinder, a hydraulic cylinder or a linear module, etc.

[0050] refer to Figure 2 and Figure 5 , a manual alignment component 4 is provided on the frame 6, and the manual alignment component 4 includes a manual alignment mounting block 41 provided on the cover plate 21, a manual alignment positioning pin 42 provided on the manual alignment mounting block 41 for correcting the position of the material strip on the supporting base plate 11, a manual alignment elastic member 43 provided between the manual alignment positioning pin 42 and the manual alignment mounting block 41 for supporting the manual alignment positioning pin 42 and forcing the manual alignment positioning pin 42 to move away from the supporting base plate 11, and a manual push plate 44 connected to one end of the manual alignment positioning pin 42 away from the cover plate 21 so as to facilitate pressing the manual alignment positioning pin 42. It is necessary to insert the pins 32 into the gaps between the adjacent pins on the side of the material strip and avoid the pins 32 from hitting the pins. Therefore, the gaps between the pins need to be aligned with the pins 32. Then, the manual alignment pins 42 are inserted into the gaps between the pins to ensure that when the lifting assembly drives the pins 32 to move toward the material strip, they are inserted between the pins. The material strip is then driven to move under the action of the material pulling drive 31. In order to adapt to material strips of different specifications, the manual alignment assembly 4 can be provided with multiple groups. Since the widths of different material strips are different, the spacing between the manual alignment pins 42 on different groups of manual positioning assemblies also varies accordingly.

[0051] The manual alignment positioning needle 42 includes a first connecting portion 421, a first limiting portion 422 and a first needle tip portion 423 connected in sequence. The first connecting portion 421, the first limiting portion 422 and the first needle tip portion 423 are formed as one piece. The first connecting portion 421 is bolted to the manual push plate 44. The manual alignment mounting block 41 is provided with a first step hole 411 that cooperates with the first limiting portion 422 to limit the range of movement of the first limiting portion 422. One end of the manual alignment elastic member 43 is abutted against the bottom surface of the first step hole 411, and the other end is abutted against the side of the first limiting portion 422 close to the first step hole 411, so that the position of the manual alignment positioning needle 42 is supported by the manual alignment elastic member 43, thereby preventing the manual alignment positioning needle 42 from moving toward the material belt without a certain pressure, thereby preventing the operation of the material belt from being affected.

[0052] In order to better press the manual alignment positioning pin 42 and to better contact the manual alignment positioning pin 42 with the pin of the material tape, four manual alignment positioning pins 42 are provided, and the relative positions between the four manual alignment positioning pins 42 are set according to the corresponding model of the material tape. The four manual alignment positioning pins 42 can more stably contact the pin of the material tape, thereby more stably adjusting the position of the material tape.

[0053] refer to Figure 2 、 Figure 4 and Figure 5 , a material pulling positioning assembly 5 is provided on the frame 6, and the material pulling positioning assembly 5 includes a material pulling positioning driving member 51 provided on the frame 6 and a material pulling positioning needle 52 provided on the material pulling positioning driving member 51. The material pulling positioning needle 52 is provided toward the support base 11 and is used to limit the position of the material strip on the support base 11 to prevent the material strip from being displaced. When the material strip is punched and the terminals on the material strip fall into the external mold, it is necessary to keep the material strip stable and avoid the material strip from moving as much as possible. At this time, the material pulling positioning driving member 51 inserts the material pulling positioning needle 52 into the support base 11. The material strip pins are positioned between the material strips, thereby stabilizing the position of the material strips and preventing the material strips from moving during processing. The material pulling positioning drive member 51 is connected to the frame 6 through a bracket bolt. The material pulling positioning drive member 51 can be an air cylinder, an oil cylinder, a hydraulic cylinder or a linear module, etc. The material pulling positioning drive member 51 is connected to the frame 6 through a bracket bolt. In order to adapt to material strips of different specifications, the material pulling positioning assembly 5 can be provided with multiple groups. Because the widths of different material strips have certain differences, the spacing between the material pulling positioning pins 52 on the multiple groups of material pulling positioning assemblies 5 also varies accordingly;

[0054] The material pulling positioning needle 52 includes a second limiting portion 521 and a second needle tip portion 522. The material pulling positioning drive 51 is connected to the first material pulling positioning block 53. The first material pulling positioning block 53 is detachably connected to the second material pulling positioning block 54, such as a bolt connection. The second material pulling positioning block 54 is provided with a second step hole 541 which cooperates with the material pulling positioning needle 52 and allows the second needle tip portion 522 of the material pulling positioning needle 52 to pass through. The second limiting portion 521 is just stuck at the end with a larger diameter of the second adjustment hole, and then the second material pulling positioning block 54 with the material pulling positioning needle 52 installed is connected together with the first material pulling positioning bolt, and then the first material pulling positioning block 53 is bolted to the material pulling positioning drive 51, so that the material pulling positioning drive 51 drives the material pulling positioning needle 52 to move toward or away from the gap between the pins.

[0055] refer to Figure 1 and Figure 2 In order to make the feeding device linked with the external injection mold, that is, to make the feeding device linked with the external injection mold when the mold is opened, a connecting plate 61 is connected to the end of the frame 6 close to the injection mold, and a connecting block 62 is connected to the movable mold of the external injection mold. The connecting plate 61 is provided with a connecting hole that matches the connecting block 62. The connecting plate 61 is connected to the external injection molding module through the connecting block 62. The connecting plate 61 is bolted to the frame 6, and the connecting block 62 is bolted to the movable mold of the external injection mold. Therefore, when the external injection mold is opened, the movable mold drives the connecting block 62 to move, the connecting block 62 drives the connecting plate 61 to move, and the connecting plate 61 synchronously drives the frame 6 to move as a whole.

[0056] refer to Figure 1 and Figure 2 In order to reduce the load on the ejector pin of the injection molding machine (because the ejector pin of the injection molding machine drives the movable mold to move), a support block 63 is bolted to one end of the external injection mold close to the connecting plate 61. A sliding assembly is provided on the support block 63 that is slidably connected to the support block 63. The sliding assembly is connected to the connecting plate 61. The sliding assembly includes a slide rail 64 and a slider 65. The slide rail 64 is bolted to the support block 63, and the slider 65 is bolted to the connecting plate 61, so that the connecting plate 61 and the external injection molding module can slide together.

[0057] refer to Figure 1-Figure 7 In order to facilitate the manual alignment positioning needle 42, the material pulling positioning needle 52 and the pulling needle 32 to pass through and thus contact the material strip between the support base plate 11 and the cover plate 21, corresponding pulling through holes 7 are opened on the support base plate 11 and the cover plate 21 for the manual alignment positioning needle 42, the material pulling positioning needle 52 and the pulling needle 32 to insert through, thereby facilitating the manual alignment positioning needle 42, the material pulling positioning needle 52 and the pulling needle 32 to be inserted between adjacent pins on both sides of the material strip.

[0058] Operation: The frame 6 of the material pulling device is connected to the external injection mold through the cooperation of the connecting plate 61 and the connecting block 62. Powered by the hydraulic or servo ejector of the injection molding machine, the frame 6 of the material pulling device slides along the slider 65 and the slide rail 64 with the movable mold of the external injection mold. When the injection molding machine closes the mold, the ejector retracts, and the material strip falls into the external injection mold, and injection molding begins. When the injection molding machine opens the mold, the ejector extends, and the material strip is separated from the external injection mold, so that the material pulling device can pull and feed the material.

[0059] The operator manually presses the manual push plate 44 to insert the manual alignment pin 42 between the pins of the material strip, thereby adjusting the position of the material strip, and then releases the hand to reset the manual alignment pin 42. Then, the pulling pin 32 is inserted between the pins under the action of the lifting drive 33, and the material strip is driven forward under the action of the pulling drive 31 to complete the feeding of the material strip. After the material strip stops, the pulling positioning pin 52 is inserted between the pins under the action of the pulling positioning drive 51, thereby stabilizing the position of the material strip. Then, the punching device punches the material strip to allow the terminal to enter the external injection mold to cooperate with the injection molding of the product.

[0060] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A material feeding device for injection molding, characterized in that: include: a frame (6) connected to the external injection mold; A support positioning mechanism is provided on a frame (6) and is used to support the position of a material strip, the support positioning mechanism comprising a support base plate (11) for supporting the material strip and at least one group of positioning adjustment components provided at the end of the support base plate (11), the positioning adjustment components comprising at least two positioning adjustment blocks (12) provided opposite to each other, the positioning adjustment blocks (12) being used to adjust the position of the material strip entering the support base plate (11) relative to the support base plate (11); An upper cover assembly (2) is arranged on a frame (6) and is used to cover the material belt of the support base plate (11), the upper cover assembly (2) includes a cover plate (21), an upper cover driving member (22) connected to the cover plate (21) and driving the cover plate (21) to move away from or close to the support base plate (11), a material pulling channel (23) is formed between the cover plate (21) and the support base plate (11), the material pulling channel (23) is used to limit the position of the material belt on the support base plate (11), and the upper cover driving member (22) is arranged on the frame (6); A material pulling mechanism (3) is provided on a frame (6), the material pulling mechanism (3) comprising a material pulling drive (31) provided on the frame (6), a lifting assembly provided on the material pulling drive (31), and a pulling needle (32) provided on the lifting assembly, the lifting assembly drives the pulling needle (32) to move toward or away from the material strip, so that the pulling needle (32) is engaged with the material strip, the material pulling drive (31) drives the pulling needle (32) to move, so that the pulling needle (32) pulls the material strip to move; A manual alignment component (4) is arranged on the frame (6), the manual alignment component (4) comprising a manual alignment mounting block (41) arranged on the cover plate (21), a manual alignment positioning needle (42) arranged on the manual alignment mounting block (41) for correcting the position of the material strip on the supporting base plate (11), a manual alignment elastic member (43) arranged between the manual alignment positioning needle (42) and the manual alignment mounting block (41) for supporting the manual alignment positioning needle (42) and forcing the manual alignment positioning needle (42) away from the supporting base plate (11), and a manual push plate (44) connected to one end of the manual alignment positioning needle (42) away from the cover plate (21) so as to facilitate pressing the manual alignment positioning needle (42); A material pulling positioning assembly (5) is arranged on a frame (6), wherein the material pulling positioning assembly (5) comprises a material pulling positioning driving member (51) arranged on the frame (6) and a material pulling positioning needle (52) arranged on the material pulling positioning driving member (51), wherein the material pulling positioning needle (52) is arranged toward the supporting base plate (11) and is used to limit the position of the material strip on the supporting base plate (11) to prevent the material strip from being displaced.

2. The injection molding material feeding device according to claim 1, characterized in that: The frame (6) is connected to one end thereof close to the injection mold with a connecting plate (61) and a connecting block (62) connected to a movable mold of an external injection mold. The connecting plate (61) is provided with a connecting hole that matches the connecting block (62). The connecting plate (61) is connected to the external injection mold module via the connecting block (62).

3. The injection molding material feeding device according to claim 2, characterized in that: The supporting base plate (11) and the cover plate (21) are both provided with corresponding drawing holes (7) for inserting the manual alignment positioning needle (42), the drawing positioning needle (52) and the drawing needle (32), so that the manual alignment positioning needle (42), the drawing positioning needle (52) and the drawing needle (32) can cooperate with the material strip.

4. The material strip feeding device for injection molding according to claim 1 or 3, characterized in that: Both ends of the support base plate (11) are provided with a plurality of first positioning adjustment holes (111) for adjusting the position of the positioning adjustment block (12) on the support base plate (11); the positioning adjustment block (12) is provided with second positioning adjustment holes (121) corresponding to the first positioning adjustment holes (111); an adjustment channel for adjusting the position of the material strip entering the material pulling channel (23) is formed between the two opposite positioning adjustment blocks (12); and a clearance groove (123) for the material strip to enter the adjustment channel is provided on the lower side of the opposite positioning adjustment block (12).

5. The material strip feeding device for injection molding according to claim 1 or 3, characterized in that: The lifting assembly comprises a lifting drive member (33) arranged on the material pulling drive member (31) and a lifting plate (34) connected to the lifting drive member (33); a switching assembly is arranged on the lifting plate (34); and the pulling needle (32) is arranged on the switching assembly.

6. The injection molding material feeding device according to claim 5, characterized in that: The switching assembly comprises a switching drive member (35) connected to the lifting plate (34) and a switching needle plate (36) connected to the switching drive member (35), and the pulling needle (32) is arranged on the switching needle plate (36).

7. The material strip feeding device for injection molding according to claim 1 or 2, characterized in that: A support block (63) is connected to one end of the external injection mold close to the connecting plate (61), and a sliding component is provided on the support block (63) and is slidably connected to the support block (63), and the sliding component is connected to the connecting plate (61).

8. The injection molding material feeding device according to claim 1, characterized in that: The manual alignment positioning needle (42) includes a first connecting portion (421), a first limiting portion (422) and a first needle tip portion (423) connected in sequence, the first connecting portion (421) is connected to the manual push plate (44), the manual alignment mounting block (41) is provided with a first step hole (411) matched with the first limiting portion (422) for limiting the range of motion of the first limiting portion (422), one end of the manual alignment elastic member (43) is against the bottom surface of the first step hole (411), and the other end is against the side of the first limiting portion (422) close to the first step hole (411).

9. The material strip feeding device for injection molding according to claim 1 or 8, characterized in that: The material pulling positioning needle (52) includes a second limiting portion (521) and a second needle tip portion (522); the material pulling positioning drive member (51) is connected to a first material pulling positioning block (53); the first material pulling positioning block (53) is detachably connected to a second material pulling positioning block (54); the second material pulling positioning block (54) is provided with a second stepped hole (541) that cooperates with the material pulling positioning needle (52) and allows the second needle tip portion (522) of the material pulling positioning needle (52) to pass through.

10. The injection molding material feeding device according to claim 9, characterized in that: The manual alignment component (4), the material pulling and positioning component (5) and the pulling needle (32) are each provided in at least two groups to accommodate material strips of different specifications.

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