A manufacturing process for preventing injection molding product inserts from jumping

Abstract

The present invention proposes a manufacturing process for preventing inserts from jumping around in injection-molded products, wherein in step 1, the matching clearance between the insert installation part and the insert is large so as to improve the success rate of the insert installation part; during mold closing in step 2, the deformation of the deformable end can increase the force acting on the insert so as to prevent the insert from jumping around during injection molding, and since the deformation of the deformable end is driven by the upper mold assembly, there is no need to add an additional power source and steps, making the process simple; during injection molding in step 3, since the insert is locked by the deformable end, the insert installation part can be prevented from jumping around; during mold opening in step 4, since the deformation of the deformable end can reduce the force acting on the insert, the insert will not be damaged when the insert installation part exits the mold core after the injection molding is completed; and since the deformation of the deformable end is driven by the upper mold assembly, there is no need to add an additional power source and steps, making the process simple; executing step 5 to take out the injection-molded product containing the insert that has been manufactured, and continuing to execute step 6 to achieve continuous production.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, and in particular to a manufacturing process for preventing an insert from jumping out of an injection molded product. Background Art

[0002] When producing injection molded products with inserts, it is generally necessary to set the insert in the cavity of the injection mold in advance, and then press the molten injection molding material into the cavity, so that the insert can be fixed at the specified position of the plastic product while molding the plastic product.

[0003] In the existing production process of injection molded products containing inserts, the insert is set in the cavity of the injection mold through the insert fixing pin. Since the molten injection molding material is pressed into the cavity with a large pressure, the insert is easy to jump in the cavity of the injection mold, making it difficult to fix the insert in the specified position of the plastic product, thereby affecting the quality and defective rate of the injection molded product. In order to reduce the jumping, the technicians designed the matching clearance between the insert and the insert fixing pin to be smaller, so as to increase the friction between the insert and the insert fixing pin, thereby improving the jumping of the insert, but the larger the gap between the insert and the insert fixing pin, the smaller the gap between the insert and the insert fixing pin, and the smaller the gap between the insert and the insert fixing pin. Friction will reduce the success rate of placing the insert on the insert fixing pin before injection molding, and increase the damage rate of the insert and the injection molded product when the insert fixing pin is withdrawn from the insert after injection molding, which will also affect the quality and defective rate of the injection molded product. In addition, in the existing production process of injection molded products containing inserts, the injection molded products containing inserts themselves need more features to be molded, and the insert fixing pin requires an independent power source to realize the setting of the insert in the cavity of the injection mold before injection molding and the withdrawal from the insert after injection molding, resulting in many production steps and complicated production processes. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a manufacturing process which can prevent inserts from jumping when manufacturing injection-molded products containing inserts, has high injection-molded product quality, low defect rate, fewer production steps and simple process.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is: a manufacturing process for preventing the insert from jumping out of an injection molded product, comprising an injection mold, wherein the injection mold comprises an upper mold assembly, a lower mold assembly, a mold core and an insert anti-jumping mechanism; the insert anti-jumping mechanism comprises an insert fixing pin, a driving structure and an insert tightness control structure; the insert fixing pin comprises a pin body and a sleeve assembly disposed in the pin body; the pin body comprises an insert mounting portion disposed at one end, and the sleeve assembly comprises a deformable end disposed at the insert mounting portion; the driving structure comprises a J-shaped guide column disposed at the lower mold assembly and a slider disposed at the upper mold assembly; the insert tightness control structure comprises a driving tapered pin disposed at the upper mold assembly;

[0006] The manufacturing process includes the following steps:

[0007] Step 1, inserting: the robot grasps the insert and puts the insert on the insert installation part;

[0008] Step 2, mold closing: in the process of gradually closing the upper mold assembly and the lower mold assembly, the upper mold assembly drives the slider to move downward, the J-shaped guide column drives the slider to move rightward and releases the insert tightness control structure, and the deformable end is deformed by the driving taper needle to increase the force on the inner wall of the insert; the insert mounting part carries the insert into the mold core;

[0009] Step 3, injection molding: the injection molding machine presses the molten injection molding material into the mold core to form an injection molded product containing an insert;

[0010] Step 4, mold opening: in the process of gradually opening the upper mold assembly and the lower mold assembly, the upper mold assembly drives the slider to move upward, the J-shaped guide column drives the slider to move leftward and squeezes the insert tightness control structure, and the deformable end is deformed by the driving taper needle to reduce the force on the inner wall of the insert; the insert mounting portion withdraws from the mold core;

[0011] Step 5: Take out the product: The robot takes out the injection molded product containing the insert;

[0012] Step 6, next round of production: repeat steps 1-5.

[0013] Compared with the prior art, the injection mold used in the manufacturing process of the present invention includes an upper mold assembly, a lower mold assembly, a mold core and an insert anti-jumping mechanism, wherein the insert anti-jumping mechanism includes an insert fixing pin, a driving structure and an insert tightness control structure, and the substructures respectively include an insert mounting portion, a deformable end, a J-shaped guide column, a slider and a driving taper needle; due to the above settings, the insert mounting portion can be set to have a larger matching clearance with the insert, so as to improve the success rate of the manipulator setting the insert on the insert mounting portion in step 1, and improve the setting position accuracy of the insert before injection molding, thereby improving the quality of the injection molded product; during the mold closing in step 2, since the deformable end is deformed by the driving taper needle, the force acting on the inner wall of the insert can be increased, so that the insert is locked after the insert mounting portion carries the insert into the mold core, so as to prevent the insert from jumping during subsequent injection molding, thereby improving the quality of the injection molded product; and, since the deformation of the deformable end is synchronously realized by the upper mold assembly driving the slider and the driving taper needle in sequence In the present invention, there is no need to set up an additional power source or add additional steps, so that the production steps are fewer and the process is simple; during the injection molding of step 3, since the insert is locked by the deformable end, the insert can be prevented from jumping on the insert mounting part when the molten injection molding material is pressed into the mold cavity with a large pressure, thereby improving the quality of the injection molded product; during the mold opening of step 4, since the deformable end is deformed by the driving taper needle, the force acting on the inner wall of the insert can be reduced, so that the insert will not be damaged when the insert mounting part withdraws from the mold core after the injection molding is completed, thereby improving the quality of the injection molded product; and, since the deformation of the deformable end is synchronously achieved by the upper mold assembly driving the slider and the driving taper needle in sequence, there is no need to set up an additional power source or add additional steps, so that the production steps are fewer and the process is simple; after the mold opening of step 4, step 5 is executed to take out the manufactured injection molded product containing the insert, and step 6 is continued to be continuously produced, so that the continuous production of injection molded products is relatively coherent, without stopping the machine and without unnecessary steps.

[0014] The present invention provides an anti-jumping manufacturing process for an injection molded product insert, wherein the deformable end includes at least one deformable sheet, the insert mounting portion includes at least one empty groove that cooperates with the deformable sheet; the driving taper needle includes a needle rod and a needle head arranged at the end of the needle rod.

[0015] The present invention provides an anti-jumping manufacturing process for an injection molded product insert, wherein step 2 comprises the following sub-steps:

[0016] Step 21: In the first stroke in which the upper mold assembly drives the slider to move downward, the slider and the J-shaped guide pillar are in a disengaged state, the tip of the needle cooperates with the deformable sheet, and the deformable sheet is hidden in the insert mounting portion through the empty groove;

[0017] Step 22: In the second stroke in which the upper die assembly drives the slider to move downward, the J-shaped guide pillar gradually drives the slider to move rightward, and the slider gradually releases the driving taper needle, so that the needle gradually squeezes the deformable sheet, thereby causing the deformable sheet to gradually protrude from the empty slot;

[0018] Step 23: When the upper mold assembly and the lower mold assembly are completely closed, the driving tapered needle is completely released, and the critical point between the needle head and the needle rod contacts the deformable sheet to maximize the deformation degree of the deformable sheet.

[0019] The present invention provides an anti-jumping manufacturing process for an injection molded product insert, wherein step 4 comprises the following sub-steps:

[0020] Step 41: When the upper mold assembly and the lower mold assembly are opened, the driving taper needle is immediately squeezed, and the needle head immediately moves toward the deformable sheet, so that the deformation of the deformable sheet is immediately reduced;

[0021] Step 42: In the first stroke in which the upper mold assembly drives the slider to move upward, the J-shaped guide pillar gradually drives the slider to move leftward, and the slider gradually squeezes the driving tapered needle, so that the needle gradually releases the deformable sheet, thereby causing the deformable sheet to gradually retract into the empty slot;

[0022] Step 43: In the second stroke in which the upper mold assembly drives the slider to move upward, the slider and the J-shaped guide column are in a disengaged state, the tip of the needle cooperates with the deformable sheet, and the deformable sheet is hidden in the insert mounting portion through the empty groove.

[0023] The present invention provides an anti-jumping manufacturing process for an injection molded product insert, wherein the J-shaped guide column comprises a compensation block, a connecting block arranged at one end of the compensation block, and an inclined guide column arranged at the other end of the compensation block; the slider has an inclined hole;

[0024] In step 22 and step 42, the inclined guide column cooperates with the inclined hole to drive the slider to move left and right.

[0025] The present invention provides an anti-jump manufacturing process for an injection molded product insert, wherein the lower mold assembly has a first mounting groove; the connecting block is arranged in the first mounting groove; the upper mold assembly has a second mounting groove; the sliding block is movably connected to the second mounting groove;

[0026] In step 22 and step 42, the inclined guide column moves up and down in the second mounting groove so as to drive the slider to move left and right through the inclined hole.

[0027] The present invention provides an anti-jumping manufacturing process for injection molded product inserts, wherein the driving structure includes a slider cover plate arranged below the slider and a limit bump block arranged on the right side of the slider; the slider cover plate is arranged in the second mounting groove so that the upper mold assembly drives the slider to move up and down; the upper mold assembly further has a third mounting groove, and the limit bump block is arranged in the third mounting groove so as to limit the rightward movement of the slider.

[0028] The present invention provides an anti-jumping manufacturing process for an injection molded product insert, wherein the driving structure comprises a driving bevel block arranged at one end of the slider; the end of the driving bevel block pointing to the insert tightness control structure has a first bevel surface;

[0029] The insert tightness control structure includes a base block, a movable block arranged on the base block, a lining plate arranged in the movable block, and an elastic member arranged between the base block and the lining plate; the upper end of the driving taper needle is arranged in the movable block and fixed by the lining plate; the movable block has a second bevel surface that matches the first bevel surface.

[0030] The present invention provides an anti-jumping manufacturing process for an injection molded product insert, wherein in step 22 and step 42, the left and right movement of the driving bevel block is converted into the up and down movement of the driving taper needle through the movable block and the elastic member;

[0031] In step 23 and step 41, the first beveled surface and the second beveled surface are in a fitted state.

[0032] The present invention provides an anti-jump manufacturing process for an injection molded product insert, wherein the upper mold assembly further has a fourth mounting groove and a transition groove; the base block and the movable block are arranged in the fourth mounting groove; the driving bevel block is arranged in the transition groove;

[0033] In step 22 and step 42, the driving bevel block moves left and right in the transition groove, and the movable block moves up and down in the fourth installation groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A three-dimensional schematic diagram of the injection mold used in the present invention;

[0035] Figure 2 This is a three-dimensional schematic diagram of the injection mold used in the present invention after the upper mold component is hidden;

[0036] Figure 3 It is a three-dimensional schematic diagram of the injection mold used in the present invention after hiding the upper mold component and part of the mold core;

[0037] Figure 4 It is a schematic diagram of the front view of the injection mold used in the present invention after hiding the upper mold component and part of the mold core;

[0038] Figure 5 is a side view schematic diagram of the upper mold assembly;

[0039] Figure 6 is a three-dimensional schematic diagram of the upper mold assembly;

[0040] Figure 7 It is a three-dimensional schematic diagram of the insert anti-jumping mechanism;

[0041] Figure 8 The explosion diagram of the anti-jump mechanism of the insert is shown in FIG.

[0042] Fig. 9 It is a cross-sectional schematic diagram of the insert anti-jumping mechanism;

[0043] Fig.10 is an enlarged schematic diagram of the cooperation between the needle and the deformable sheet;

[0044] Fig.11 It is a cross-sectional schematic diagram of the insert anti-jumping mechanism in the mold opening state;

[0045] Fig.12 It is a cross-sectional schematic diagram of the insert anti-jumping mechanism in the mold opening state;

[0046] In the figure, the insert fixing needle 1, the driving structure 2, the insert tightness control structure 3, the upper mold assembly 4, the lower mold assembly 5, the mold core 6, the insert 7, the injection molded product 8; the insert body 11, the sleeve assembly 12; the J-shaped guide column 21, the slider 22, the slider cover 23, the limit collision block 24, the driving bevel block 25; the driving taper needle 31, the base block 32, the movable block 33, the lining plate 34, the elastic member 35; the second installation groove 41, the third installation groove 42, the fourth installation groove 43, the The mounting groove 43 and the transition groove 44; the first mounting groove 51; the insert mounting portion 111; the deformable end 121, the sleeve body 122 and the connecting strip 123; the compensation block 211, the connecting block 212 and the inclined guide column 213; the inclined hole 221; the first avoidance groove 231; the first beveled surface 251 and the second avoidance groove 252; the needle rod 311 and the needle head 312; the second beveled surface 331; the empty groove 1111; the deformable sheet 1211; the locking portion 12111. DETAILED DESCRIPTION

[0047] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The present invention can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0048] Furthermore, on the first aspect, in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0049] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0050] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0051] See also Figure 1-12The manufacturing process of anti-jumping insert of an injection molded product shown in the figure includes an injection mold, the injection mold includes an upper mold assembly 4, a lower mold assembly 5, a mold core 6 and an insert anti-jumping mechanism; the insert anti-jumping mechanism includes an insert fixing needle 1, a driving structure 2 and an insert tightness control structure 3; the insert fixing needle 1 includes an insert body 11 and a sleeve assembly 12 arranged in the insert body 11; the insert body 11 includes an insert mounting portion 111 arranged at one end, and the sleeve assembly 12 includes a deformable end 121 arranged at the insert mounting portion 111; the driving structure 2 includes a J-shaped guide column 21 arranged on the lower mold assembly 5 and a slider 22 arranged on the upper mold assembly 4; the insert tightness control structure 3 includes a driving taper needle 31 arranged on the upper mold assembly 4;

[0052] The manufacturing process includes the following steps:

[0053] Step 1, insert 7: the robot grasps the insert 7 and puts the insert 7 on the insert installation part 111;

[0054] Step 2, mold closing: During the process of gradually closing the upper mold assembly 4 and the lower mold assembly 5, the upper mold assembly 4 drives the slider 22 to move downward, the J-shaped guide pillar 21 drives the slider 22 to move rightward and releases the insert tightness control structure 3, and the deformable end 121 is deformed by the driving taper needle 31 to increase the force acting on the inner wall of the insert 7; the insert mounting portion 111 carries the insert 7 into the mold core 6;

[0055] Step 3, injection molding: the injection molding machine presses the molten injection molding material into the mold core 6 to form an injection molded product 8 containing the insert 7;

[0056] Step 4, mold opening: During the gradual mold opening process of the upper mold assembly 4 and the lower mold assembly 5, the upper mold assembly 4 drives the slider 22 to move upward, the J-shaped guide column 21 drives the slider 22 to move leftward and squeezes the insert tightness control structure 3, and the deformable end 121 is deformed by the driving taper needle 31 to reduce the force acting on the inner wall of the insert 7; the insert mounting portion 111 exits the mold core 6;

[0057] Step 5, taking out: the robot takes out the injection molded product 8 containing the insert 7;

[0058] Step 6, next round of production: repeat steps 1-5.

[0059] In actual manufacturing, the injection mold used in the manufacturing process of the present invention includes an upper mold component 4, a lower mold component 5, a mold core 6 and an insert anti-jumping mechanism, wherein the insert anti-jumping mechanism includes an insert fixing pin 1, a driving structure 2 and an insert tightness control structure 3, and the substructures include an insert mounting portion 111, a deformable end 121, a J-shaped guide column 21, a slider 22 and a driving taper needle 31. Due to the above settings, the insert mounting portion 111 can be set to have a larger matching clearance with the insert 7, so as to improve the success rate of the manipulator setting the insert 7 on the insert mounting portion 111 in step 1, improve the setting position accuracy of the insert 7 before injection molding, and thus improve the quality of the injection molded product 8; during the mold closing in step 2, since the deformable end 121 is deformed by the driving taper needle 31, the force acting on the inner wall of the insert 7 can be increased, so that the insert mounting portion 111 carries the insert 7 into the mold core 6. Afterwards, the insert 7 is locked to prevent the insert 7 from jumping during the subsequent injection molding, thereby improving the quality of the injection molded product 8; and, since the deformation of the deformable end 121 is achieved by the upper mold assembly 4 driving the slider 22 and the tapered needle 31 in sequence, there is no need to set up an additional power source, nor is there any need to add additional steps, so that the production steps are fewer and the process is simple; during the injection molding of step 3, since the insert 7 is locked by the deformable end 121, it can be prevented that the insert 7 jumps on the insert mounting portion 111 when the molten injection molding material is pressed into the mold cavity with a large pressure, thereby improving the quality of the injection molded product 8; during the mold opening of step 4, since the deformable end 121 The deformation caused by driving the tapered needle 31 can reduce the force on the inner wall of the insert 7, so that the insert 7 will not be damaged when the insert mounting part 111 withdraws from the mold core 6 after the injection molding is completed, thereby improving the quality of the injection molded product 8; and, because the deformation of the deformable end 121 is synchronously achieved by the upper mold assembly 4 driving the slider 22 and driving the tapered needle 31 in sequence, there is no need to set up an additional power source, nor to add additional steps, so that the production steps are fewer and the process is simple; after the mold is opened in step 4, step 5 is executed to take out the manufactured injection molded product 8 containing the insert 7, and step 6 is continued to be performed for continuous production, so that the continuous production of the injection molded product 8 is relatively coherent, without the need to stop the machine and without unnecessary steps.

[0060] Please continue reading Figure 8 , Fig. 9 , wherein the deformable end 121 includes at least one deformable sheet 1211 , and the insert mounting portion 111 includes at least one empty groove 1111 cooperating with the deformable sheet 1211 ; the driving tapered needle 31 includes a needle rod 311 and a needle head 312 arranged at the end of the needle rod 311 .

[0061] Specifically, the size of the needle head 312 is smaller than the needle rod 311, and the influence on the deformable sheet 1211 gradually increases in the process of driving the tapered needle 31 to move downward; the deformable sheet 1211 itself is elastic, and under the action of the needle head 312 or the needle rod 311, it will gradually deform along the empty groove 1111, until the needle rod 311 is in full contact with the deformable sheet 1211, the deformation degree of the deformable sheet 1211 reaches the maximum, and the force of the deformable sheet 1211 on the insert 7 also reaches the maximum. At this time, the entire injection mold is in a closed mold state, and the molten injection molding material is pressed into the mold cavity to prevent the insert 7 from jumping under the huge injection pressure.

[0062] For the preferred option, please continue to read Fig.10 , wherein a plurality of locking portions 12111 are provided on one side of the deformable sheet 1211 facing the empty slot 1111 ; the locking portions 12111 are used to increase the acting force between the deformable end 121 and the insert 7 .

[0063] For further information, please refer to Fig. 9 The sleeve assembly 12 includes a sleeve body 122 and at least one connecting strip 123 nested in the sleeve body 122; the deformable end 121 is arranged at the end of the connecting strip 123; due to the tight fit between the sleeve body 122, the connecting strip 123 and the inner wall of the needle body 11, the entire sleeve assembly 12 maintains a stable position with the needle body 11 during the up and down movement of the driving tapered needle 31, and will not be driven by the movement of the driving tapered needle 31, thereby maintaining the stability of the position of the deformable sheet 1211 and the empty slot 1111, and preventing the two from being misaligned and causing failure.

[0064] Please continue reading Fig. 9 , Fig.10 , Fig.11 , Fig.12 , where step 2 includes the following sub-steps:

[0065] Step 21: In the first stroke of the upper mold assembly 4 driving the slider 22 to move downward, the slider 22 and the J-shaped guide pillar 21 are in a disengaged state, the tip of the needle 312 cooperates with the deformable sheet 1211, and the deformable sheet 1211 is hidden in the insert mounting portion 111 through the empty slot 1111;

[0066] Step 22: In the second stroke in which the upper mold assembly 4 drives the slider 22 to move downward, the J-shaped guide pillar 21 gradually drives the slider 22 to move rightward, and the slider 22 gradually releases the driving tapered needle 31, so that the needle head 312 gradually squeezes the deformable sheet 1211, thereby causing the deformable sheet 1211 to gradually protrude from the empty slot 1111;

[0067] Step 23: When the upper mold assembly 4 and the lower mold assembly 5 are completely closed, the driving tapered needle 31 is completely released, and the critical point between the needle head 312 and the needle rod 311 contacts the deformable sheet 1211 to maximize the deformation degree of the deformable sheet 1211.

[0068] Specifically, in step 21, the upper mold assembly 4 and the lower mold assembly 5 move from the fully open mold state to the closed mold state. At this time, the upper mold assembly 4 and the lower mold assembly 5 have a stroke. The setting of this stroke provides space for the manipulator to place the insert 7 in step 1. In addition, the J-shaped guide post 21 is not in this stroke. This design can save the material of the J-shaped guide post 21; in step 22, the J-shaped guide post 21 and the slider 22 begin to contact and form a match; in step 23, the upper mold assembly 4 and the lower mold assembly 5 are in a fully closed mold position, and the critical point of the needle head 312 and the needle rod 311 is in contact with the deformable sheet 1211 The two positions correspond to each other. Since the needle head 312 is a tapered structure with a gradually changing diameter, while the diameter of the needle rod 311 is constant, the deformable sheet 1211 gradually changes under the drive of the needle head 312. When the needle rod 311 contacts the deformable sheet 1211, the deformation degree of the deformable sheet 1211 is the largest, and the continued movement of the needle rod 311 cannot cause the deformable sheet 121 to continue to change. Therefore, under this position setting, the stroke of the needle head 312 and the needle rod 311 is the shortest, which is beneficial to reduce the length of the driving tapered needle 31 and improve the stability of the entire insert anti-jumping mechanism.

[0069] Please continue reading Fig. 9 , Fig.10 , Fig.11 , Fig.12 , wherein step 4 includes the following sub-steps:

[0070] Step 41: When the upper mold assembly 4 and the lower mold assembly 5 are opened, the driving tapered needle 31 is immediately squeezed, and the needle head 312 immediately moves toward the deformable sheet 1211, so that the deformation of the deformable sheet 1211 is immediately reduced;

[0071] Step 42: In the first stroke of the upper mold assembly 4 driving the slider 22 to move upward, the J-shaped guide pillar 21 gradually drives the slider 22 to move leftward, and the slider 22 gradually squeezes and drives the tapered needle 31, so that the needle head 312 gradually releases the deformable sheet 1211, and then the deformable sheet 1211 gradually retracts into the empty slot 1111;

[0072] Step 43: In the second stroke in which the upper mold assembly 4 drives the slider 22 to move upward, the slider 22 and the J-shaped guide column 21 are in a disengaged state, the tip of the needle 312 cooperates with the deformable sheet 1211, and the deformable sheet 1211 is hidden in the insert mounting portion 111 through the empty groove 1111.

[0073] Specifically, during the entire injection molding process in step 3, the driving tapered needle 31 is always fully released, and the deformation degree of the deformable sheet 1211 is always in the maximum state, so as to prevent the insert 7 from jumping under a larger injection molding pressure; but when the mold needs to be opened in step 4, if the deformation degree of the deformable sheet 1211 is always in the maximum state, it is easy to damage the inner wall of the insert 7 when withdrawing, affecting the quality of the injection molded product 8; because in step 23, the position where the upper mold assembly 4 and the lower mold assembly 5 are completely molded, the critical point of the needle head 312 and the needle rod 311 and the position where the deformable sheet 1211 contacts are corresponding to each other, so in step 41, when the upper mold assembly 4 and the lower mold assembly 5 are opened, the driving tapered needle 31 can be squeezed immediately, and the needle head 31 2 immediately moves toward the deformable sheet 1211, so that the deformation of the deformable sheet 1211 is immediately reduced, thereby immediately reducing the force on the inside of the insert 7, and preventing the inner wall of the insert 7 from being damaged when withdrawing; in step 42, the J-shaped guide column 21 gradually drives the slider 22 to move leftward, so that the deformable sheet 1211 retracts to the empty groove 1111, so as to continue to reduce the force between the insert 7 and the insert installation portion 111, thereby improving the success rate of installing the insert 7 in the aforementioned step 1; in step 43, the upper mold assembly 4 and the lower mold assembly 5 continue to move relative to each other until they are in the fully open mold state at the beginning of step 21, so that the upper mold assembly 4 and the lower mold assembly 5 are restored to the stroke at the beginning of step 21, so as to take out the manufactured injection molded product 8 and install a new insert 7.

[0074] Please continue reading Fig. 9 , wherein the J-shaped guide column 21 includes a compensation block 211, a connecting block 212 arranged at one end of the compensation block 211, and an inclined guide column 213 arranged at the other end of the compensation block 211; the slider 22 has an inclined hole 221; in step 22 and step 42, the inclined guide column 213 cooperates with the inclined hole 221 to drive the slider 22 to move left and right.

[0075] Please continue reading Figure 8 , Fig. 9 , wherein the lower mold assembly 5 has a first mounting groove 51; the connecting block 212 is arranged in the first mounting groove 51, so that the lower mold assembly 5 and the J-shaped guide column 21 are relatively stationary; the upper mold assembly 4 has a second mounting groove 41; the slider 22 is movably connected to the second mounting groove 41; in steps 22 and 42, the inclined guide column 213 moves up and down in the second mounting groove 41, so as to drive the slider 22 to move left and right through the inclined hole 221.

[0076] Please continue reading Figure 5 , Figure 6 , Figure 8 , Fig. 9, wherein the driving structure 2 includes a slider cover 23 arranged below the slider 22 and a limit block 24 arranged on the right side of the slider 22; the slider cover 23 is arranged in the second mounting groove 41 so that the upper mold assembly 4 drives the slider 22 to move up and down; the upper mold assembly 4 further has a third mounting groove 42, and the limit block 24 is arranged in the third mounting groove 42 so as to limit the stroke of the slider 22 moving to the right.

[0077] Specifically, the slider cover 23 is fixed in the second mounting groove 41 of the upper mold assembly 4 by fasteners, the lower end surface of the slider 22 is supported by the upper end surface of the slider cover 23, and the upper end surface of the slider 22 is supported by the upper end surface of the second mounting groove 41, so the slider 22 cannot move in the up and down directions. When the inclined guide column 213 interacts with the inclined hole 221, the slider 22 can only move left and right.

[0078] Furthermore, the slider cover plate 23 has a first avoidance groove 231 for avoiding the oblique guide pillar 213 so as to provide space for the up and down movement of the J-shaped guide pillar 21 .

[0079] Please continue reading Figure 3 , Figure 8 , Fig. 9 The driving structure 2 includes a driving bevel block 25 arranged at one end of the slider 22; the end of the driving bevel block 25 pointing to the insert tightness control structure 3 has a first bevel surface 251; the insert tightness control structure 3 includes a base block 32, a movable block 33 arranged on the base block 32, a lining plate 34 arranged in the movable block 33, and an elastic member 35 arranged between the base block 32 and the lining plate 34; the upper end of the driving taper needle 31 is arranged in the movable block 33 and fixed by the lining plate 34; the movable block 33 has a second bevel surface 331 that matches the first bevel surface 251.

[0080] It can be understood that, since there are many other mechanisms between the upper mold assembly 4, the lower mold assembly 5 and the mold core 6, and the space is limited, if the slider 22 is used to directly interact with the insert tightness control structure 3, it will occupy a large space; therefore, the slender driving bevel block 25 cooperates with the movable block 33, which can save space and avoid interference with other mechanisms in the injection mold, and can also control the distance between the slider 22 and the insert tightness control structure 3, so that the slider 22 can be minimized while meeting the cooperation with the J-shaped guide column 21.

[0081] Please continue reading Fig.12 , wherein, in step 22 and step 42, the left and right movement of the driving bevel block 25 is converted into the up and down movement of the driving tapered needle 31 through the movable block 33 and the elastic member 35; in step 23 and step 41, the first bevel surface 251 and the second bevel surface 331 are in a fit state.

[0082] It is worth noting that the positions where the upper mold assembly 4 and the lower mold assembly 5 are completely closed and the positions where the critical points of the needle head 312 and the needle rod 311 contact the deformable sheet 1211 mentioned in step 23 and step 41 correspond to each other, and at this time, the first beveled surface 251 and the second beveled surface 331 are in a fitted state. Under this setting, once the mold is opened, the first beveled surface 251 and the second beveled surface 331 will immediately take effect and immediately drive the tapered needle 31 upward, thereby achieving the aforementioned immediate reduction in the deformation of the deformable sheet 1211 at the moment of mold opening, thereby immediately reducing the force on the inside of the insert 7 and preventing damage to the inner wall of the insert 7 during withdrawal.

[0083] Please continue reading Figure 3 , Figure 5 , Figure 6 , wherein the upper mold assembly 4 further has a fourth mounting groove 43 and a transition groove 44; the base block 32 and the movable block 33 are arranged in the fourth mounting groove 43; the driving bevel block 25 is arranged in the transition groove 44; in steps 22 and 42, the driving bevel block 25 moves left and right in the transition groove 44, and the movable block 33 moves up and down in the fourth mounting groove 43;

[0084] Specifically, the base block 32 is fixed in the fourth mounting groove 43 of the upper mold assembly 4 by fasteners. During the movement of the upper mold assembly 4, the base block 32 and the upper mold assembly 4 are relatively stationary, and the movable block 33 is movably connected to the fourth mounting groove 43 through the base block 32. When the first beveled surface 251 and the second beveled surface 331 act, the movable block 33 can move up and down in the fourth mounting groove 43.

[0085] Furthermore, the end of the driving bevel block 25 has a second avoidance groove 252 ; the second avoidance groove 252 avoids the driving taper needle 31 when the driving bevel block 25 moves left and right.

[0086] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A manufacturing process for preventing the insert of an injection molded product from jumping, characterized in that: The invention comprises an injection mold, wherein the injection mold comprises an upper mold component (4), a lower mold component (5), a mold core (6) and an insert anti-jumping mechanism; the insert anti-jumping mechanism comprises an insert fixing pin (1), a driving structure (2) and an insert tightness control structure (3); the insert fixing pin (1) comprises a pin body (11) and a sleeve component (12) arranged in the pin body (11); the pin body (11) comprises an insert mounting portion (111) arranged at one end, and the sleeve component (12) comprises a deformable end (121) arranged at the insert mounting portion (111); the driving structure (2) comprises a J-shaped guide column (21) arranged at the lower mold component (5) and a slider (22) arranged at the upper mold component (4); the insert tightness control structure (3) comprises a driving taper pin (31) arranged at the upper mold component (4); The manufacturing process includes the following steps: Step 1, inserting: the robot grasps the insert and puts the insert on the insert installation part (111); Step 2, mold closing: during the process of gradually closing the upper mold assembly (4) and the lower mold assembly (5), the upper mold assembly (4) drives the slider (22) to move downward, the J-shaped guide column (21) drives the slider (22) to move rightward and releases the insert tightness control structure (3), and the deformable end (121) is deformed by the driving taper needle (31) to increase the force acting on the inner wall of the insert; the insert mounting portion (111) carries the insert into the mold core (6); Step 3, injection molding: the injection molding machine presses the molten injection molding material into the mold core (6) to form an injection molded product containing an insert; Step 4, mold opening: during the process of gradually opening the upper mold assembly (4) and the lower mold assembly (5), the upper mold assembly (4) drives the slider (22) to move upward, the J-shaped guide column (21) drives the slider (22) to move leftward and squeeze the insert tightness control structure (3), and the deformable end (121) is deformed by the driving taper needle (31) to reduce the force acting on the inner wall of the insert; the insert mounting portion (111) withdraws from the mold core (6); Step 5: Take out the product: The robot takes out the injection molded product containing the insert; Step 6, next round of production: repeat steps 1-5.

2. The anti-jumping manufacturing process for injection molded product inserts according to claim 1 is characterized in that: The deformable end (121) comprises at least one deformable sheet (1211); the insert mounting portion (111) comprises at least one empty slot (1111) cooperating with the deformable sheet (1211); and the driving taper needle (31) comprises a needle rod (311) and a needle head (312) arranged at the end of the needle rod (311).

3. The anti-jumping manufacturing process for injection molded product inserts according to claim 2 is characterized in that: Step 2 contains the following sub-steps: Step 21: In the first stroke in which the upper mold assembly (4) drives the slider (22) to move downward, the slider (22) and the J-shaped guide pillar (21) are in a disengaged state, the tip of the needle (312) cooperates with the deformable sheet (1211), and the deformable sheet (1211) is hidden in the insert mounting portion (111) through the empty groove (1111); Step 22: In the second stroke in which the upper mold assembly (4) drives the slider (22) to move downward, the J-shaped guide column (21) gradually drives the slider (22) to move rightward, and the slider (22) gradually releases the driving taper needle (31), so that the needle head (312) gradually squeezes the deformable sheet (1211), thereby causing the deformable sheet (1211) to gradually protrude from the empty slot (1111); Step 23: When the upper mold assembly (4) and the lower mold assembly (5) are completely closed, the driving taper needle (31) is completely released, and the critical point between the needle head (312) and the needle rod (311) contacts the deformable sheet (1211) to maximize the deformation degree of the deformable sheet (1211).

4. The anti-jumping manufacturing process for injection molded product inserts according to claim 3 is characterized in that: Step 4 contains the following sub-steps: Step 41: When the upper mold assembly (4) and the lower mold assembly (5) are opened, the driving taper needle (31) is immediately squeezed, and the needle head (312) immediately moves toward the deformable sheet (1211), so that the deformation of the deformable sheet (1211) is immediately reduced; Step 42: In the first stroke in which the upper mold assembly (4) drives the slider (22) to move upward, the J-shaped guide column (21) gradually drives the slider (22) to move leftward, and the slider (22) gradually squeezes the driving taper needle (31), so that the needle head (312) gradually releases the deformable sheet (1211), thereby causing the deformable sheet (1211) to gradually retract into the empty slot (1111); Step 43: In the second stroke in which the upper mold assembly (4) drives the slider (22) to move upward, the slider (22) and the J-shaped guide column (21) are in a disengaged state, the tip of the needle (312) cooperates with the deformable sheet (1211), and the deformable sheet (1211) is hidden in the insert mounting portion (111) through the empty groove (1111).

5. The anti-jumping manufacturing process for injection molded product inserts according to claim 4 is characterized in that: The J-shaped guide column (21) comprises a compensation block (211), a connection block (212) arranged at one end of the compensation block (211), and an inclined guide column (213) arranged at the other end of the compensation block (211); the sliding block (22) has an inclined hole (221); In step 22 and step 42, the inclined guide column (213) cooperates with the inclined hole (221) to drive the slider (22) to move left and right.

6. The anti-jumping manufacturing process for injection molded product inserts according to claim 5 is characterized in that: The lower mold assembly (5) has a first mounting groove (51); the connecting block (212) is arranged in the first mounting groove (51); the upper mold assembly (4) has a second mounting groove (41); the sliding block (22) is movably connected to the second mounting groove (41); In step 22 and step 42, the inclined guide column (213) moves up and down in the second mounting groove (41) so as to drive the sliding block (22) to move left and right through the inclined hole (221).

7. The anti-jumping manufacturing process for injection molded product inserts according to claim 6 is characterized in that: The driving structure (2) comprises a slider cover plate (23) arranged below the slider (22) and a limit block (24) arranged on the right side of the slider (22); the slider cover plate (23) is arranged in the second mounting groove (41) so that the upper mold assembly (4) drives the slider (22) to move up and down; the upper mold assembly (4) further has a third mounting groove (42), and the limit block (24) is arranged in the third mounting groove (42) so as to limit the rightward movement of the slider (22).

8. The anti-jumping manufacturing process for injection molded product inserts according to claim 4 is characterized in that: The driving structure (2) comprises a driving bevel block (25) arranged at one end of the sliding block (22); the end of the driving bevel block (25) pointing towards the insert tightness control structure (3) has a first bevel surface (251); The insert tightness control structure (3) comprises a base block (32), a movable block (33) arranged on the base block (32), a lining plate (34) arranged in the movable block (33), and an elastic member (35) arranged between the base block (32) and the lining plate (34); the upper end of the driving taper needle (31) is arranged in the movable block (33) and is fixed by the lining plate (34); the movable block (33) has a second beveled surface (331) matched with the first beveled surface (251).

9. The anti-jumping manufacturing process for injection molded product inserts according to claim 8, characterized in that: In step 22 and step 42, the left-right movement of the driving bevel block (25) is converted into the up-and-down movement of the driving taper needle (31) via the movable block (33) and the elastic member (35); In step 23 and step 41, the first beveled surface (251) and the second beveled surface (331) are in a fitted state.

10. The anti-jumping manufacturing process for injection molded product inserts according to claim 8, characterized in that: The upper die assembly (4) further comprises a fourth mounting groove (43) and a transition groove (44); the base block (32) and the movable block (33) are arranged in the fourth mounting groove (43); and the driving bevel block (25) is arranged in the transition groove (44); In step 22 and step 42, the driving bevel block (25) moves left and right in the transition groove (44), and the movable block (33) moves up and down in the fourth installation groove (43).

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