Copper nut grabbing and burying jig for injection molding

Abstract

The utility model provides a copper nut grabbing and burying jig for injection molding, which is characterized in that a supporting seat comprises a back plate and a side frame connected to the back plate; the grabbing and burying mechanism is arranged at the end, away from the back plate, of the side frame and used for grabbing and burying the copper nuts. The adsorption mechanism is used for taking and placing plastic finished products and comprises a first suction nozzle plate and a second suction nozzle plate, the first suction nozzle plate and the second suction nozzle plate are located on the side, away from the back plate, of the grabbing and burying mechanism, and the first suction nozzle plate and the second suction nozzle plate are symmetrical about the grabbing and burying mechanism. The driving mechanism comprises a first transmission assembly, a second transmission assembly and a first driving source arranged on the back plate; the first transmission assembly is connected with the first driving source and the grabbing and burying mechanism, and the second transmission assembly is connected with the first driving source and two suction nozzle plates included in the adsorption mechanism; in the process that the first driving source drives the grabbing and burying mechanism to be relatively away from the back plate, the first driving source further drives the two suction nozzle plates to be away from each other to form an avoiding space for the grabbing and burying mechanism to pass through, and therefore the grabbing and burying mechanism extends out of the end, away from the back plate, of the adsorption mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic parts molding, in particular to a grasping and embedding copper nut fixture for injection molding. Background Art

[0002] After the finished products of some plastic products are shipped, they need to be fixed with other parts by screws, so it is necessary to open multiple internal thread holes. However, when the plastic products are injection molded, if the internal thread holes are directly formed on them, when the screws are actually used to connect them with other parts, the internal thread holes are very likely to cause thread slippage. Therefore, in order to prevent the occurrence of thread slippage, before injection molding such plastic products, the copper nut is first placed in the set position of the mold in the form of an insert (that is, the copper nut is put on the nut column of the mold), and then the rubber is heated and pressurized to flow into the mold after the mold is closed. In this way, after cooling and molding, the copper nut is firmly embedded in the plastic product to form a corresponding effective internal thread hole, and it is not easy to cause thread slippage when screws are used to assemble with other parts. However, in the injection molding of such plastic products, generally only a copper nut grabbing fixture is used to grab and bury the copper nut. After the injection molding is completed, the finished plastic product (with copper nuts buried) is removed from the fixed mold of the mold after the mold is opened by a product removal fixture. In some cases, the copper nut grabbing fixture and the product removal fixture are limited by the mold space and need to move one after another, which causes a waste of the injection molding cycle and is not conducive to the control of production costs. Utility Model Content

[0003] In view of the problems existing in the above-mentioned existing mold manufacturing technology, the main purpose of the utility model is to provide a jig for grasping and embedding copper nuts for injection molding. The driving mechanism in the provided jig for grasping and embedding copper nuts for injection molding can replace the position of the grasping mechanism and the adsorption mechanism to alternately perform the grasping and embedding operation of the copper nut and the removal operation of the plastic product. It occupies a small space, can effectively save the injection molding cycle, and control the production cost.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model provides a grasping and embedding copper nut jig for injection molding, and the grasping and embedding copper nut jig for injection molding comprises:

[0006] A support base, the support base comprising a back plate and a side frame connected to the back plate;

[0007] A grasping and burying mechanism, which is arranged at one end of the side frame away from the back plate, and is used for grasping and burying copper nuts;

[0008] A suction mechanism, the suction mechanism is used for taking and placing the finished plastic parts, and the suction mechanism includes a first suction nozzle plate and a second suction nozzle plate located on a side of the burying mechanism away from the back plate, and the first suction nozzle plate and the second suction nozzle plate are symmetrical about the burying mechanism;

[0009] A driving mechanism, the driving mechanism comprising a first transmission assembly, a second transmission assembly and a first driving source disposed on the back plate; the first transmission assembly connects the first driving source and the catching mechanism, and the second transmission assembly connects the first driving source and two suction nozzle plates included in the adsorption mechanism;

[0010] In the process that the first driving source drives the grasping mechanism relatively away from the back plate, the first driving source also drives the two suction nozzle plates away from each other to form an avoidance space for the grasping mechanism to pass through, so that the grasping mechanism extends out of the end of the adsorption mechanism away from the back plate.

[0011] As a further description of the above technical solution, in the process that the first driving source drives the burying mechanism to be relatively close to the back plate, the avoidance space formed between the first suction nozzle plate and the second suction nozzle plate gradually decreases.

[0012] As a further description of the above technical solution, the second transmission assembly includes two rotating rods, each of which is rotatably disposed on the edge of the side frame and fixedly connected to a nozzle plate;

[0013] It also includes two adapter blocks with a first engaging portion, and each of the rotating rods is provided with a second engaging portion that engages with the first engaging portion. The adapter block is connected to the first driving source so as to drive the rotating rod to rotate around its own axis relative to the side frame, so that the first suction nozzle plate and the second suction nozzle plate are relatively close to / far away from each other.

[0014] As a further description of the above technical solution, the side frame has a first step portion protruding inwardly, and the rotating rod has a second step portion protruding outwardly. In the axial direction of the rotating rod, the first step portion and the second step portion are against each other.

[0015] As a further description of the above technical solution, the burying mechanism includes a clamping plate parallel to the back plate, and the clamping plate is connected to the output end of the first driving source through a first transmission assembly;

[0016] A plurality of elastic sleeves for grabbing copper nuts are clamped on one side of the clamping plate away from the back plate.

[0017] As a further description of the above technical solution, a push plate is provided on the side of the clamping plate facing the back plate, and a plurality of nut push pins are provided on the push plate. The plurality of nut push pins are arranged in one-to-one correspondence with a plurality of elastic sleeves, and one end of each nut push pin facing the elastic sleeve passes through the clamping plate and is movably inserted into the elastic sleeve.

[0018] As a further description of the above technical solution, a second driving source is provided on the plate surface of the clamping plate facing the back plate, and the output end of the second driving source is connected to the plate surface of the pushing plate facing the clamping plate, thereby driving the nut pushing pin toward one end of the elastic sleeve and movably inserting it into the elastic sleeve.

[0019] As a further description of the above technical solution, the first transmission assembly includes a plurality of connecting rods, and one end of the plurality of connecting rods away from the clamping plate is floatingly connected to the output end of the driving source through a floating plate group;

[0020] A positioning bushing matched with a positioning guide column preset on the injection mold is also provided on the plate surface of the clamping plate away from the back plate.

[0021] As a further description of the above technical solution, a plurality of suction nozzles for adsorbing plastic products are provided on the plate surfaces of the first suction nozzle plate and the second suction nozzle plate facing away from the back plate.

[0022] The outstanding effects of the utility model are:

[0023] The copper nut grasping and embedding jig for injection molding provided by the utility model combines a grasping and embedding mechanism for grasping and embedding copper nuts and an adsorption mechanism for taking and placing plastic finished parts, and uses a driving mechanism to realize the position conversion of the two mechanisms, so that in the process of injection molding a plastic product containing a copper nut insert, only the copper nut grasping and embedding jig for injection molding can be used to complete the grasping and embedding of the copper nut (that is, putting it into the set position of the mold in the form of an insert, for example, putting the copper nut on the nut column of the mold), and after the mold is closed, the rubber material is heated and pressurized to flow into the mold for aggregation, and after being cooled and formed into a plastic finished part embedded with the copper nut, the grasping and embedding mechanism and the adsorption mechanism of the jig can be converted in position through the driving mechanism, and the plastic finished part can be directly taken out by using its adsorption mechanism. Therefore, when the jig is used in the process of injection molding plastic products containing copper nut inserts, the copper nut grasping operation and the plastic product removal operation can be alternately performed by only switching the positions of the two mechanisms. The overall jig occupies a small space, which is more conducive to use in limited mold operating space. The position conversion time is short, which is more conducive to saving the injection molding cycle and controlling production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of a perspective of a clamp for grasping and embedding copper nuts for injection molding in the utility model;

[0025] Figure 2 It is a structural schematic diagram of another perspective of the embedded copper nut fixture for injection molding in the utility model;

[0026] Figure 3 It is a structural schematic diagram of another perspective of the embedded copper nut fixture for injection molding in the utility model;

[0027] Figure 4 It is a structural schematic diagram of the catching and burying mechanism in the utility model;

[0028] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0029] Figure 6 It is a schematic diagram of the structure of the rotational cooperation between the rotating rod and the side frame.

[0030] Description of Figure Numbers:

[0031] 1. Back plate; 2. Side frame; 3. Copper nut; 4. First suction nozzle plate; 5. Second suction nozzle plate; 6. First driving source; 7. Rotating rod; 8. First meshing part; 9. Adapter block; 10. Second meshing part; 11. First step part; 12. Second step part; 13. Clamping plate; 14. Elastic sleeve; 15. Push plate; 16. Nut push pin; 17. Second driving source; 18. Connecting rod; 19. Positioning bushing; 20. Suction nozzle; 21. Sleeve; 22. Ball screw; 23. Leather case; 24. Floating plate; 25. Link plate; 26. Contour screw; 27. Ball screw. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0034] See also Figures 1 to 6 One embodiment of the utility model discloses a fixture for grasping and embedding copper nuts 3 for injection molding, and the fixture for grasping and embedding copper nuts 3 for injection molding comprises:

[0035] A support base, the support base comprising a back plate 1 and a side frame 2 connected to the back plate 1;

[0036] A grasping and embedding mechanism, which is arranged at one end of the side frame 2 away from the back plate 1, and is used for grasping and embedding the copper nut 3;

[0037] A suction mechanism, the suction mechanism is used for taking and placing the finished plastic parts, and the first suction nozzle plate 4 and the second suction nozzle plate 5 are located on the side of the burying mechanism away from the back plate 1, and the first suction nozzle plate 4 and the second suction nozzle plate 5 are symmetrical about the burying mechanism;

[0038] A driving mechanism, the driving mechanism comprising a first transmission assembly, a second transmission assembly and a first driving source 6 provided on the back plate 1; the first transmission assembly connects the first driving source 6 and the burying mechanism, and the second transmission assembly connects the first driving source 6 and two suction nozzle plates included in the adsorption mechanism;

[0039] In the process that the first driving source 6 drives the grasping mechanism to move relatively away from the back plate 1, the first driving source 6 also drives the two suction nozzle plates to move away from each other to form an avoidance space for the grasping mechanism to pass through, thereby allowing the grasping mechanism to extend out of the end of the adsorption mechanism away from the back plate 1.

[0040] By means of the above structure, the injection molding fixture for grasping and embedding the copper nut 3 combines the grasping mechanism for grasping and embedding the copper nut 3 and the adsorption mechanism for taking and placing the plastic finished product, and uses the driving mechanism to realize the position conversion of the two mechanisms, so that in the process of injection molding of plastic products containing copper nut 3 inserts, only the injection molding fixture for grasping and embedding the copper nut 3 can be used to complete the grasping and embedding of the copper nut 3 (that is, placing it in the set position of the mold in the form of an insert, for example, putting the copper nut 3 on the nut column of the mold), and after the mold is closed, the rubber material is heated and pressurized to flow into the mold for aggregation. After cooling and forming into a plastic finished product embedded with the copper nut 3, the grasping mechanism and the adsorption mechanism of the fixture can be converted by the driving mechanism, and the plastic finished product can be directly taken out by using its adsorption mechanism. Therefore, when the jig is used in the process of injection molding a plastic product containing a copper nut 3 insert, the copper nut 3 can be grasped and buried and the plastic product can be removed alternately by only switching the positions of the two mechanisms. The jig occupies a small space as a whole, which is more conducive to use in a limited mold operable space. The position switching takes a short time, which is more conducive to saving the injection molding cycle and controlling production costs. It should be understood that before the jig is used in injection molding production, the jig has been stably installed on the manipulator.

[0041] Specifically, the manipulator is connected to the surface of the back plate 1 of the support seat facing away from the side frame 2, and the surface of the back plate 1 facing the side frame 2 and the side frame 2 are used together for the assembly of the grasping mechanism, the adsorption mechanism and the driving mechanism. The grasping mechanism is arranged at the end of the side frame 2 facing away from the back plate 1, and the first suction nozzle plate 4 and the second suction nozzle plate 5 included in the adsorption mechanism are located on the side of the grasping mechanism away from the back plate 1, and the two suction nozzle plates are symmetrical about the grasping mechanism. In this state, the manipulator can drive the fixture to use the two suction nozzle plates to perform the picking and placing operations of the finished plastic parts. If the grasping and embedding operations of the copper nut 3 are required, the first driving source 6 provided on the back plate 1 in the driving mechanism can be used to drive the grasping mechanism relatively away from the back plate 1 through the first transmission component. At the same time, the first driving source 6 is also driven by the second transmission component. The moving assembly drives the two suction nozzle plates away from each other, so that when the back plate 1 is located between the two suction nozzle plates in a direction perpendicular to its motion trajectory, the two suction nozzle plates will not hinder the burying mechanism that is moving away from the back plate 1, but form an avoidance space for the burying mechanism to pass through, so that the burying mechanism extends out of the end of the adsorption mechanism away from the back plate 1, thereby the burying mechanism and the adsorption mechanism complete the position conversion in the direction of the burying mechanism moving relative to the back plate 1, cancel the position interference of the adsorption mechanism on the burying mechanism, and enable the burying mechanism to smoothly perform the burying and embedding operations of the copper nut 3. It should be understood that after the burying mechanism completes the burying and embedding operations of the copper nut 3, the first driving source 6 can correspondingly drive the burying mechanism and the adsorption mechanism to reset through the first transmission assembly and the second transmission assembly, thereby realizing the alternating cycle of the burying and embedding operations of the copper nut 3 and the removal of the plastic product.

[0042] See also Figures 1 to 3Specifically, in this embodiment, the support seat is composed of a vertically arranged back plate 1 and a side frame 2 connected to the left side of the back plate 1, and the side frame 2 is composed of two horizontal plates arranged up and down and square columns symmetrically connecting the two horizontal plates in the front and back directions. The burying mechanism is arranged at the left end of the side frame 2, and the first suction nozzle plate 4 and the second suction nozzle plate 5 of the adsorption mechanism are symmetrical about the burying mechanism in the front and back directions (in this embodiment, the first suction nozzle plate 4 is defined to be located in front of the second suction nozzle plate 5, and the second suction nozzle plate 5 is located behind the first suction nozzle plate 4. Of course, in other embodiments, it can also be defined that the first suction nozzle plate 4 is located behind the second suction nozzle plate 5, and the second suction nozzle plate 5 is located in front of the first suction nozzle plate 4). The first driving source 6 connected to the left plate surface of the back plate 1 can drive the burying mechanism to move relative to the back plate 1 in the left and right directions through the first transmission assembly, so that it can gradually move away from the back plate 1 to the left and pass through the adsorption mechanism, and then it can gradually approach the back plate 1 and reset to the right side of the two suction nozzle plates included in the adsorption. In the process of the burying mechanism gradually moving away from the back plate 1 to the left, the first driving source 6 will drive the first suction nozzle plate 4 and the second suction nozzle plate 5 to open relatively through the second transmission assembly, and the distance between the two suction nozzle plates in the front-to-back direction will gradually increase, and before the burying mechanism reaches between the two suction nozzle plates in the left-right direction, a avoidance space is formed for the burying mechanism to pass through. In the process of the burying mechanism gradually approaching the back plate 1 to the right and resetting, the avoidance space formed between the first suction nozzle plate 4 and the second suction nozzle plate 5 gradually decreases, so that the two suction nozzle plates will eventually reset. It should be understood that the avoidance space formed between the two suction nozzle plates gradually decreases in this process, and the distance between the two suction nozzle plates in the front-to-back direction can be set to 0 or not 0 according to actual needs. For example, in this embodiment, the minimum distance between the two suction nozzle plates in the front-to-back direction is set to not be 0.

[0043] Specifically, in the present embodiment, the second transmission assembly includes two adapter blocks 9 provided with a first meshing portion 8 and two rotating rods 7 provided with a second meshing portion 10, wherein the two adapter blocks 9 are connected to the output end of the first driving source 6, and the first meshing portions 8 thereof are opposite to each other in the front-to-back direction, and the second meshing portion 10 is circumferentially arranged in the middle section of the rotating rod 7 and meshes with the first meshing portion 8. At the same time, the two rotating rods 7 vertically penetrate the two end corners of the left side of the side frame 2 respectively and are fastened to the right plate surfaces of the two suction nozzle plates through fasteners, and each of the rotating rods 7 is rotatable around its own axis relative to the upper and lower horizontal plates of the side frame 2. Therefore, the first driving source 6 can drive the two rotating rods 7 to rotate in opposite directions and drive the two suction nozzle plates to be relatively close / far away in the front-to-back direction.

[0044] See also Figures 1 to 3 ,as well as Figure 6Specifically, in this embodiment, in order to realize that the rotating rod 7 can be rotatably connected to the upper and lower horizontal plates of the side frame 2, and at the same time, the two horizontal plates can provide support for the rotating rod 7, the hole walls of the two horizontal plates for the rotating rod 7 to pass through are made to protrude inward to form a first step portion 11, and at the same time, the rod portion at the corresponding position of the rotating rod 7 is made to protrude outward to form a second step portion 12. In the axial direction of the rotating rod 7, the wall surfaces opposite to the first step portion 11 and the second step portion 12 are abutted against each other, so that the rotating rod is equivalent to being hung on the two horizontal plates of the side frame 2 to connect the suction nozzle plate.

[0045] See also Figures 1 to 5 Specifically, in this embodiment, the burying mechanism includes a clamping plate 13 parallel to the back plate 1, and the clamping plate 13 is connected to the output end of the first driving source 6 through a first transmission assembly; the left side surface of the clamping plate 13 is clamped with two groups of 12 elastic sleeves 14 for grabbing the copper nut 3, and each of the elastic sleeves 14 includes a sleeve 21 directly clamped on the left side surface of the clamping plate 13, and the sleeve 21 is symmetrically movable with two beads 22 on the wall, and the two beads 22 are symmetrically movable. The relative parts of the beads 22 touch each other in the sleeve 21, and the outer wall of the sleeve 21 with two beads 22 is also covered with a leather sleeve 23 (with a certain deformation ability) to limit the two beads 22, so that when the manipulator drives the fixture to grab the copper nut 3, 12 copper nuts 3 can enter the sleeve 21 one by one and squeeze in between the two beads 22, so that the two beads 22 can clamp the squeezed copper nuts 3 under the limit of the leather sleeve 23, ensuring the effectiveness of the grabbing action of the copper nuts 3. Of course, in other embodiments, the number and position of the elastic sleeve 14 can be set according to actual needs.

[0046] Specifically, in this embodiment, a push plate 15 is provided on the right side of the clamping plate 13, and a plurality of 12 nut push pins 16 corresponding to the elastic sleeve 14 are provided on the push plate 15, and each nut push pin 16 passes through the clamping plate 13 and is movably inserted into the elastic sleeve 14 toward the left end of the elastic sleeve 14. Specifically, in this embodiment, the output end of the second driving source 17 is provided on the left plate surface of the push plate 15 and the right plate surface of the clamping plate 13, so that the second driving source 17 can drive the left end of the nut push pin 16 to move leftward and correspondingly insert into the elastic sleeve 14, and can push out the copper nut 3 clamped in the elastic sleeve 14, and the copper nut 3 is correspondingly sleeved on the nut column of the mold, thereby realizing the embedding action of the copper nut 3. It should be understood that the second driving source 17 can also drive the nut push pin to reset to the right to carry out the next cycle of copper nut 3 push operation. Specifically, in this embodiment, the 12 nut push pins 16 are arranged one by one with the 12 elastic sleeves 14, with a total of 6 in each group, and the points are connected in a line, which is generally circular, and a connecting plate can be set on the empty plate surface in the middle of the push plate 15 to fix the push plate 15 with the output end of the second driving source 17. Of course, in other embodiments, the shape of the connecting plate can be set according to actual needs to fix the push plate 15 with the output end of the second driving source 17.

[0047] Specifically, in the present embodiment, the first transmission assembly includes 8 horizontal connecting rods 18, each of which is a group of 4, and the left ends thereof are connected to the clamping plate 13, and the right ends thereof are floatingly connected to the output end of the first driving source 6 through a floating plate 24 group, and the plate surface of the clamping plate 13 facing away from the back plate 1 is also provided with a positioning bushing 19 which is compatible with the positioning guide column pre-installed on the injection mold, so that the positioning error generated by the manipulator itself and the assembly process of the jig can be reduced and eliminated in the process that the manipulator drives the grasping and embedding mechanism to grasp and embed the copper nut 3, thereby ensuring the accuracy and effectiveness of the grasping and embedding actions of the copper nut 3. In the floating plate 24 group of this embodiment, the right plate surface of the link plate 25 is directly fixedly connected to the output end of the first driving source 6, and the floating plate 24 is connected to the left side of the link plate 25 by means of equal height screws 26, and a preset gap is left between the floating plate 24 and the link plate 25 in the left-right direction, and the ball screw 27 is used in conjunction with it, for example, the ball screw 27 is installed from the right plate surface of the link plate 25 to it, and the ball at its end elastically abuts against the right plate surface of the floating plate 24, so that the floating plate 24 group can float in the left-right direction. Of course, in other embodiments, other similar floating structures can be set to connect between the connecting rod 18 and the output end of the first driving source 6 to reduce positioning errors.

[0048] Please continue reading Figures 1 to 3 Specifically, in this embodiment, three suction nozzles 20 for adsorbing plastic products are provided on the left plate surfaces of the first suction nozzle plate 4 and the second suction nozzle plate 5, which are connected to the external vacuum adsorption pipeline. A total of six symmetrically arranged suction nozzles 20 on the two suction nozzle plates cooperate with the movement of the manipulator (such as rotation, translation, etc.) through vacuum adsorption, so that the produced plastic finished products can be moved out of the mold after the mold is opened and transferred to a preset storage position.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A copper nut catching fixture for injection molding, characterized in that: include: A support base, the support base comprising a back plate and a side frame connected to the back plate; A grasping and burying mechanism, which is arranged at one end of the side frame away from the back plate, and is used for grasping and burying copper nuts; A suction mechanism, the suction mechanism is used for taking and placing the finished plastic parts, and the suction mechanism includes a first suction nozzle plate and a second suction nozzle plate located on a side of the burying mechanism away from the back plate, and the first suction nozzle plate and the second suction nozzle plate are symmetrical about the burying mechanism; A driving mechanism, the driving mechanism comprising a first transmission assembly, a second transmission assembly and a first driving source disposed on the back plate; the first transmission assembly connects the first driving source and the catching mechanism, and the second transmission assembly connects the first driving source and two suction nozzle plates included in the adsorption mechanism; In the process that the first driving source drives the grasping mechanism relatively away from the back plate, the first driving source also drives the two suction nozzle plates away from each other to form an avoidance space for the grasping mechanism to pass through, so that the grasping mechanism extends out of the end of the adsorption mechanism away from the back plate.

2. The embedded copper nut fixture for injection molding according to claim 1, characterized in that: In the process that the first driving source drives the burying mechanism to be relatively close to the back plate, the avoidance space formed between the first suction nozzle plate and the second suction nozzle plate gradually decreases.

3. The embedded copper nut fixture for injection molding according to claim 2, characterized in that: The second transmission assembly includes two rotating rods, each of which is rotatably disposed on the edge of the side frame and fixedly connected to a nozzle plate; It also includes two adapter blocks with a first engaging portion, and each of the rotating rods is provided with a second engaging portion that engages with the first engaging portion. The adapter block is connected to the first driving source so as to drive the rotating rod to rotate around its own axis relative to the side frame, so that the first suction nozzle plate and the second suction nozzle plate are relatively close to / far away from each other.

4. The embedded copper nut fixture for injection molding according to claim 3, characterized in that: The side frame has a first step portion protruding inwardly, and the rotating rod has a second step portion protruding outwardly. In the axial direction of the rotating rod, the wall surfaces of the first step portion and the second step portion facing each other abut against each other.

5. The embedded copper nut fixture for injection molding according to claim 1, characterized in that: The burying mechanism comprises a clamping plate parallel to the back plate, and the clamping plate is connected to the output end of the first driving source through a first transmission assembly; A plurality of elastic sleeves for grabbing copper nuts are clamped on one side of the clamping plate away from the back plate.

6. The embedded copper nut fixture for injection molding according to claim 5, characterized in that: A push plate is provided on the side of the clamping plate facing the back plate, and a plurality of nut push pins are provided on the push plate. The plurality of nut push pins are arranged in one-to-one correspondence with a plurality of elastic sleeves, and one end of each nut push pin facing the elastic sleeve passes through the clamping plate and is movably inserted into the elastic sleeve.

7. The embedded copper nut fixture for injection molding according to claim 6, characterized in that: A second driving source is provided on the surface of the clamping plate facing the back plate, and an output end of the second driving source is connected to the surface of the push plate facing the clamping plate, thereby driving the nut push pin toward one end of the elastic sleeve and movably inserting it into the elastic sleeve.

8. The embedded copper nut fixture for injection molding according to claim 5, characterized in that: The first transmission assembly comprises a plurality of connecting rods, and one end of the plurality of connecting rods away from the clamping plate is floatingly connected to the output end of the driving source through a floating plate group; A positioning bushing matched with a positioning guide column preset on the injection mold is also provided on the plate surface of the clamping plate away from the back plate.

9. The embedded copper nut fixture for injection molding according to claim 1, characterized in that: A plurality of suction nozzles for adsorbing plastic products are disposed on the plate surfaces of the first suction nozzle plate and the second suction nozzle plate facing away from the back plate.

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