Glasses leg pin inserting mechanism of injection molding machine and glasses leg pin inserting method

Abstract

The invention provides a glasses leg pin inserting mechanism of an injection molding machine. Comprising a fixed seat, an adjusting back plate, a lifting assembly, a heating plate and a contact pin, a cylinder barrel of a lifting oil cylinder of the lifting assembly is fixed to the upper portion of the adjusting back plate, a piston rod of the lifting oil cylinder extends downwards, the end of the piston rod is fixedly connected with a lifting block, a heating plate is fixed to the lower portion of the adjusting back plate, and the upper ends of contact pins are fixedly connected with the lifting block. The mechanism utilizes the heating function to ensure the proper temperature of the pin before the pin is inserted into the mold, so that the injection molding efficiency and the finished product quality are improved. The invention further provides a glasses leg pin inserting method which comprises the following steps: sequentially dividing the movement of the screw into a first stroke and a second stroke, and controlling the screw of the injection molding machine to gradually move towards the mold direction until the tail end of the first stroke; the lifting assembly is used for enabling the contact pins to move downwards to extend into the corresponding glasses leg mold cavities; and controlling the screw of the injection molding machine to move towards the mold until the tail end of the second stroke, completing the glue injection action, and stopping. The injection molding consistency of the glasses legs is ensured; and a high-precision sectional glue injection strategy is adopted, so that a mold cavity can be more uniformly filled with melt, and bubbles and defects are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine auxiliary equipment, and in particular to a temple pin insertion mechanism of an injection molding machine, which is used in an injection molding machine, especially in the injection molding process of temples of glasses, and can accurately control the position and depth of the pin.

[0002] The present invention also relates to an efficient and accurate pin insertion method in the process of injection molding of glasses temples, wherein the method utilizes a temple pin insertion mechanism of an injection molding machine to implement the temple pin insertion operation. Background Art

[0003] In the eyewear manufacturing industry, the injection molding of temples is a key step, and its quality directly affects the wearing comfort and overall aesthetics of the glasses. In the traditional temple injection molding process, the use of pins often relies on manual operation, which is inefficient and difficult to achieve precise control of the pin position, thus affecting the consistency and quality of the temple injection molding.

[0004] Even though a few injection molding machines in the prior art use a mechanical pin insertion mechanism, the mechanical pin insertion mechanism must use an independent drive element due to its process limitations. The injection molding machine cannot share the same hydraulic drive system with the mechanical pin insertion mechanism, which increases the cost of the injection molding process and brings inconvenience to use.

[0005] The patent with application number CN202210363779.8 provides an automatic temple pin insertion machine for eyeglass production, including an injection molding machine and an automatic pin insertion device, the automatic pin insertion device is fixedly arranged above the injection molding port of the injection molding machine, the automatic pin insertion device includes a frame, a clamping block with a pair of pin insertion ports, a feeding mechanism, a transfer mechanism and a pin insertion mechanism, the pin insertion mechanism includes a plurality of driving cylinders, a pin insertion bracket and a pair of pin insertion rods, and a needle core positioning mechanism is also provided on the automatic pin insertion device at one side of the feeding mechanism, including a plurality of positioning blocks, a driving cylinder and an installation push block connected to the driving cylinder, the installation push block is symmetrically provided with a pair of feeding channels and a pair of installation channels matching the positioning blocks, the plurality of positioning blocks are arranged in a pair of feeding channels, a cover is embedded in the openings of the pair of feeding channels, and a push spring is fixedly provided on the inner side of the cover.

[0006] However, the above patented technology cannot be applied to the plastic film operation of the injection molding machine for processing the temples of the glasses, and cannot meet the needs of mechanized processing of the temples of the glasses. In addition, the patented technology uses pneumatic components to drive its pin insertion device, which is not compatible with the hydraulic system of the injection molding machine itself, increasing the overall cost of use and making it inconvenient for later maintenance. Summary of the invention

[0007] The object of the present invention is to provide a temple pin insertion mechanism for an injection molding machine to solve the problems raised in the above background technology:

[0008] (1) How to flexibly adjust and accurately position the pin in three-dimensional space, and use the heating function to ensure that the pin is at an appropriate temperature before being inserted into the mold, so as to improve injection molding efficiency and product quality.

[0009] (2) How to be compatible with the hydraulic drive system of the injection molding machine.

[0010] The object of the present invention is to provide a temple pin insertion method for an injection molding machine to solve the problems raised in the above background technology:

[0011] (1) How to achieve efficient and precise molding of temples by precisely controlling the injection molding process of the injection molding machine and the lifting and lowering action of the pin mechanism.

[0012] (2) How to optimize the action process of the temple pin, and drive the temple pin mechanism and the injection molding machine body step by step through a set of hydraulic drive system to achieve the completion process of temple injection molding.

[0013] To achieve the above object, the present invention provides the following technical solutions:

[0014] A temple pin insertion mechanism for an injection molding machine;

[0015] It includes a fixing seat, an adjusting back plate, a lifting assembly, a heating plate and a plurality of pins;

[0016] The fixing seat is fixedly connected to the injection molding machine body, the adjusting back plate is connected to the fixing seat, the lifting assembly is arranged on the adjusting back plate, the lifting assembly comprises a lifting cylinder and a lifting block, the cylinder barrel of the lifting cylinder is fixedly connected to the upper part of the adjusting back plate, the piston rod of the lifting cylinder extends downward and the end of the piston rod is fixedly connected to the lifting block, the heating plate is fixedly connected to the lower part of the adjusting back plate, the heating plate is provided with a plurality of heating holes penetrating the upper and lower end surfaces thereof, the plurality of heating holes correspond one to one with the plurality of plug pins, the heating plate is further provided with heating electrodes for heating the plurality of plug pins, the upper ends of the plurality of plug pins are respectively fixedly connected to the lifting blocks of the lifting assembly, the lower ends of the plurality of plug pins respectively penetrate the corresponding heating holes and are aligned with the corresponding temple injection mold of the injection molding machine;

[0017] The lifting cylinder of the lifting assembly is directly connected to the hydraulic system of the injection molding machine.

[0018] Based on the above technical solution, the present invention can also be improved as follows.

[0019] Furthermore, the lifting assembly also includes a plurality of sliding rods, which are distributed on the front and rear sides of the adjustment back plate. The direction of the sliding rods is consistent with the up and down direction. The lifting block has a plurality of guide holes corresponding to the plurality of sliding rods, and the plurality of guide holes of the lifting block respectively cooperate with the plurality of sliding rods.

[0020] Furthermore, the fixed seat includes a horizontal seat body and a vertical seat body, the horizontal seat body is fixedly connected to the vertical seat body, the horizontal seat body is fixedly connected to the injection molding machine body, and slide grooves are provided on both sides of the vertical seat body. The direction of the slide grooves is consistent with the up and down direction, and the adjustment back plate cooperates with the slide grooves of the vertical seat body.

[0021] Furthermore, a first positioning plate is provided on the upper portion of the adjustment back plate, a second positioning plate is provided on the vertical seat body, a positioning screw passes through the first positioning plate and the second positioning plate, and the positioning screw is fixed to the first positioning plate and the second positioning plate respectively through a plurality of positioning nuts.

[0022] Furthermore, the horizontal seat body of the fixed seat includes a transverse plate, a longitudinal plate and a base plate, which are stacked in sequence from top to bottom. The base plate is fixedly connected to the frame of the injection molding machine. The transverse plate and the base plate are matched through a slide groove, and the moving direction of the transverse plate is left and right. The longitudinal plate and the transverse plate are also matched through a slide groove, and the moving direction of the longitudinal plate is front and back.

[0023] Further, the fixing seat also includes a first adjustment component and a second adjustment component, the first adjustment component includes a first adjustment screw, a first positioning nut and a first positioning block, the first positioning block is fixedly connected to the longitudinal movement plate, the first positioning nut is fixedly connected to the transverse movement plate, and the end of the first adjustment screw is supported on the first positioning block after the first adjustment screw is matched with the first positioning nut;

[0024] The second adjustment assembly includes a second adjustment screw, a second positioning nut and a second positioning block. The second positioning block is fixedly connected to the transverse plate, and the second positioning nut is fixedly connected to the base plate. After the second adjustment screw is matched with the second positioning nut, the end of the second adjustment screw is supported on the second positioning block.

[0025] After adopting such a structure, the temple pin mechanism of the injection molding machine realizes flexible adjustment and precise positioning of the pin in three-dimensional space through innovative structural design, and at the same time utilizes the heating function to ensure the appropriate temperature of the pin before inserting into the mold, so as to improve the injection molding efficiency and the quality of the finished product.

[0026] In addition, the lifting cylinder of the lifting assembly is directly connected to the hydraulic system of the injection molding machine. The temple pin insertion mechanism of the injection molding machine is compatible with the hydraulic system of the injection molding machine itself, which reduces the use cost and facilitates later maintenance.

[0027] The beneficial effects of the temple pin insertion mechanism of the injection molding machine are:

[0028] (1) Precise adjustment: Through the three-dimensional adjustment component of the fixed seat and the vertical adjustment of the adjustment back plate, the pins can be flexibly adjusted in three-dimensional space to meet the injection molding requirements of temples of different sizes and shapes.

[0029] (2) Efficient heating: The design of the heating plate ensures that the pin reaches the ideal temperature before being inserted into the mold, improving injection molding efficiency and finished product quality.

[0030] (3) High degree of automation: The lifting component is directly connected to the hydraulic system of the injection molding machine, realizing the automated control of the pin insertion process, reducing manual operation costs and improving production efficiency.

[0031] To achieve the above object, the present invention also provides the following technical solutions:

[0032] A method for implementing temple pin insertion using the temple pin insertion mechanism of the injection molding machine as described above comprises the following steps:

[0033] a) Control the mold of the injection molding machine to move gradually until the mold closing action is completed;

[0034] b) The total stroke of the screw during the injection molding process is divided into a first stroke and a second stroke, the distance of the first stroke accounts for 70% to 80% of the total stroke of the screw, and the distance of the second stroke accounts for 20% to 30% of the total stroke of the screw;

[0035] Start the injection cylinder of the injection molding machine to inject the molten material into the temple mold cavity formed by the mold, control the screw of the injection molding machine to gradually move toward the mold until it stops at the end of the first stroke, and stop the injection cylinder of the injection molding machine;

[0036] c) controlling the temple pin insertion mechanism of the injection molding machine, and using the lifting assembly to move the plurality of pins heated by the heating plate downward and extend into the corresponding temple mold cavity, until the lifting cylinder of the lifting assembly extends to the maximum stroke and stops;

[0037] d) Start the injection molding machine's injection cylinder again, control the injection molding machine's screw to move toward the mold until it stops at the end of the second stroke, complete the injection action, and stop the injection molding machine's injection cylinder;

[0038] e) After the injection molding is completed, the mold is opened for 2 mm and maintained for 0.2 seconds, and then the lifting component of the temple pin mechanism of the injection molding machine is controlled to move the pin upward until the pin moves out of the temple mold cavity and stops.

[0039] After adopting such a method, the temple pin insertion method of the injection molding machine is divided into a first stroke and a second stroke in sequence by segmented injection, wherein the distance of the first stroke accounts for 80% of the total stroke of the screw, and the distance of the second stroke accounts for 20% of the total stroke of the screw. The injection cylinder of the injection molding machine is started to inject the molten material into the temple mold cavity formed by the mold. The screw of the injection molding machine is controlled to move gradually toward the mold until it stops at the end of the first stroke, at which time the molten material has mostly filled the mold cavity, and the injection cylinder of the injection molding machine is stopped.

[0040] Then, the temple pin mechanism of the injection molding machine is controlled, and the multiple pins heated by the heating plate are moved downwards by the lifting assembly to extend into the corresponding temple mold cavity. The downward movement of the pins should continue until the lifting cylinder of the lifting assembly extends to the maximum stroke and stops, ensuring that the pins accurately reach the predetermined position.

[0041] Finally, add more glue and start the injection cylinder of the injection molding machine again, and control the screw of the injection molding machine to continue moving toward the mold until it stops at the end of the second stroke. At this time, the molten material completely fills the mold cavity, and the molten material around the pin is also effectively compacted, completing the injection action and stopping the injection cylinder of the injection molding machine.

[0042] After the injection molding is completed, the mold is opened 2mm and maintained for 0.2s. This step helps to reduce the pressure inside the mold and prevent the pin from being damaged when it is pulled out. The lifting component of the temple pin mechanism of the injection molding machine is controlled to move the pin upward until the pin is completely moved out of the temple mold cavity and stops, preparing for the next pin insertion operation.

[0043] The beneficial effects of the temple pin insertion method of the injection molding machine.

[0044] (1) Improve molding accuracy: By precisely controlling the injection process and pin insertion operation, the consistency and high precision of the temple injection molding are ensured.

[0045] (2) Optimize melt filling: The segmented injection strategy enables the melt to fill the mold cavity more evenly, reducing the generation of bubbles and defects.

[0046] (3) Improve production efficiency: Automated pin insertion and precise injection molding control significantly improve production efficiency and reduce manual operation costs.

[0047] (4) Protect the pins: The short pause after mold opening and the smooth retraction of the pins effectively avoid damage to the pins during the extraction process and extend the service life of the pins.

[0048] (5) Optimize the action process of the temple pin: A hydraulic drive system is used to drive the temple pin mechanism and the injection molding machine body in steps to achieve the completion process of the temple injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a usage state diagram of the temple pin insertion mechanism embodiment of the injection molding machine.

[0050] Figure 2 It is a three-dimensional diagram of a schematic diagram of an embodiment of the temple pin insertion mechanism of the injection molding machine.

[0051] Figure 3 It is a left view of an embodiment of the temple pin insertion mechanism of the injection molding machine.

[0052] Figure 4 yes Figure 3 Section view along AA.

[0053] Figure 5 yes Figure 4 Section view along BB.

[0054] Description of the numbers in the figure:

[0055] Fixed seat-100; vertical seat body-110; second positioning plate-111; horizontal seat body-120; transverse plate-121; longitudinal plate-122; base plate-123; first adjusting screw-131; first positioning nut-132; first positioning block-133; second adjusting screw-141; second positioning nut-142; second positioning block-143; adjusting back plate-200; first positioning plate-210; positioning screw-220; lifting cylinder-310; lifting block-320; sliding rod-330; heating plate-400; pin-500; injection molding machine-600; frame-610; mold-620. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0057] The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0059] See also Figures 1 to 5 .

[0060] The temple pin insertion mechanism of the injection molding machine includes a fixing seat 100 , an adjustment back plate 200 , a lifting assembly, a heating plate 400 and a plurality of pins 500 .

[0061] The fixed seat 100 includes a horizontal seat body 120 and a vertical seat body 110. The horizontal seat body 120 is fixed to the vertical seat body 110. Slide grooves are provided on both sides of the vertical seat body 110. The direction of the slide grooves is consistent with the up and down direction.

[0062] The horizontal seat body 120 includes a transverse plate 121, a longitudinal plate 122 and a base plate 123. The longitudinal plate 122, the transverse plate 121 and the base plate 123 are stacked in sequence from top to bottom. The vertical seat body 110 is fixed to the longitudinal plate 122 by bolts. The base plate 123 is fixed to the frame 610 of the injection molding machine 600 by bolts. The base plate 123 has a cavity inside for accommodating the second adjustment component. The transverse plate 121 and the base plate 123 are matched by a slide groove. The moving direction of the transverse plate 121 is left and right. The transverse plate 121 has a cavity inside for accommodating the first adjustment component. The longitudinal plate 122 and the transverse plate 121 are also matched by a slide groove. The moving direction of the longitudinal plate 122 is front and back.

[0063] The fixed seat 100 also includes a first adjustment component and a second adjustment component. The first adjustment component includes a first adjustment screw 131, a first positioning nut 132 and a first positioning block 133. The first positioning block 133 is welded and fixed on the longitudinal plate 122, and the first positioning nut 132 is welded and fixed on the transverse plate 121. The first adjustment screw 131 cooperates with the first positioning nut 132, and the end of the first adjustment screw 131 is supported on the first positioning block 133. The first adjustment screw 131 can realize axial positioning and free movement in the circumferential direction relative to the first positioning block 133.

[0064] The second adjusting assembly includes a second adjusting screw 141, a second positioning nut 142 and a second positioning block 143. The second positioning block 143 is fixed on the transverse plate 121, and the second positioning nut 142 is fixed on the base plate 123. The second adjusting screw 141 cooperates with the second positioning nut 142. The end of the second adjusting screw 141 is supported on the second positioning block 143. The second adjusting screw 141 can realize axial positioning and free movement in the circumferential direction relative to the second positioning block 143.

[0065] The adjusting back plate 200 cooperates with the sliding groove of the vertical seat body 110, and a first positioning plate 210 is provided on the upper part of the adjusting back plate 200, and a second positioning plate 111 is provided on the vertical seat body 110. The positioning screw 220 passes through the first positioning plate 210 and the second positioning plate 111, and the positioning screw 220 is respectively fixed to the first positioning plate 210 and the second positioning plate 111 through four positioning nuts.

[0066] The lifting assembly is arranged on the adjusting back plate 200, and the lifting assembly includes a lifting cylinder 310, a lifting block 320 and two sliding rods 330. The cylinder barrel of the lifting cylinder 310 is fixed to the upper part of the adjusting back plate 200 by bolts. The piston rod of the lifting cylinder 310 extends downward and the end of the piston rod is welded and fixed to the lifting block 320. The two sliding rods 330 are distributed on the front and rear sides of the adjusting back plate 200. The direction of the sliding rod 330 is consistent with the up and down direction. The lifting block 320 has two guide holes corresponding to the two sliding rods 330, and the two guide holes of the lifting block 320 are respectively matched with the two sliding rods 330.

[0067] The heating plate 400 is fixed to the lower part of the adjusting back plate 200 by bolts. The length of the heating plate 400 from the cylinder barrel of the lifting cylinder 310 is greater than the maximum stroke of the piston rod of the lifting cylinder 310. The heating plate 400 is provided with a plurality of heating holes penetrating its upper and lower end surfaces. The plurality of heating holes correspond one-to-one to the plurality of pins 500. A heating electrode for heating the plurality of pins 500 is also provided inside the heating plate 400. The upper ends of the plurality of pins 500 are respectively fixed to the lifting blocks 320 of the lifting assembly, and the lower ends of the plurality of pins 500 respectively penetrate the corresponding heating holes and are aligned with the corresponding temple injection mold 620 of the injection molding machine 600.

[0068] The lifting cylinder 310 of the lifting assembly is directly connected to the hydraulic system of the injection molding machine 600. The rod chamber and the rodless chamber of the lifting cylinder 310 are respectively connected to the hydraulic system of the injection molding machine 600 through the reversing valve group. Compared with the existing technology, there is no need to add an independent hydraulic system.

[0069] The method for implementing the temple pin insertion using the temple pin insertion mechanism of the injection molding machine as described above comprises the following steps:

[0070] a) controlling the mold 620 of the injection molding machine 600 to move gradually until the mold closing action is completed;

[0071] b) The total stroke of the screw during the injection molding process of the injection molding machine 600 is divided into a first stroke and a second stroke, wherein the distance of the first stroke accounts for 80% of the total stroke of the screw, and the distance of the second stroke accounts for 20% of the total stroke of the screw;

[0072] Start the injection cylinder of the injection molding machine 600 to inject the molten material into the temple mold cavity formed by the mold 620, control the screw of the injection molding machine 600 to gradually move toward the mold 620 until it stops at the end of the first stroke, and stop the injection cylinder of the injection molding machine 600;

[0073] c) controlling the temple pin insertion mechanism of the injection molding machine, and using the lifting assembly to move the plurality of pins 500 heated by the heating plate 400 downward and extend into the corresponding temple mold cavity, until the lifting cylinder 310 of the lifting assembly extends to the maximum stroke and stops;

[0074] d) restarting the injection cylinder of the injection molding machine 600, controlling the screw of the injection molding machine 600 to move toward the mold 620 until it stops at the end of the second stroke, completing the injection action, and stopping the injection cylinder of the injection molding machine 600;

[0075] e) After the injection molding is completed, the mold is opened for 2 mm and maintained for 0.2 seconds, and then the lifting component of the temple pin mechanism of the injection molding machine is controlled to move the pin 500 upward until the pin 500 moves out of the temple mold cavity and stops.

[0076] The above is only one embodiment of the present invention. It should be pointed out that a person skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A temple pin insertion mechanism for an injection molding machine, characterized by: It comprises a fixing seat (100), an adjusting back plate (200), a lifting assembly, a heating plate (400) and a plurality of pins (500); The fixing seat (100) is fixedly connected to the main body of the injection molding machine (600), the adjusting back plate (200) is connected to the fixing seat (100), the lifting assembly is arranged on the adjusting back plate (200), the lifting assembly comprises a lifting cylinder (310) and a lifting block (320), the cylinder barrel of the lifting cylinder (310) is fixedly connected to the upper part of the adjusting back plate (200), the piston rod of the lifting cylinder (310) extends downward and the end of the piston rod is fixedly connected to the lifting block (320), and the heating plate (400) is fixedly connected At the lower part of the adjustment back plate (200), the heating plate (400) is provided with a plurality of heating holes penetrating the upper and lower end surfaces thereof, the plurality of heating holes corresponding to the plurality of plug pins (500) one by one, a heating electrode for heating the plurality of plug pins (500) is also provided inside the heating plate (400), the upper ends of the plurality of plug pins (500) are respectively fixedly connected to the lifting blocks (320) of the lifting assembly, and the lower ends of the plurality of plug pins (500) respectively penetrate the corresponding heating holes and are aligned with the corresponding temple injection mold (620) of the injection molding machine (600); The lifting cylinder (310) of the lifting assembly is directly connected to the hydraulic system of the injection molding machine (600).

2. The temple pin insertion mechanism of the injection molding machine according to claim 1, characterized in that: The lifting assembly further comprises a plurality of slide bars (330), the plurality of slide bars (330) being distributed on the front and rear sides of the adjustment back plate (200), the direction of the slide bars (330) being consistent with the up and down direction, the lifting block (320) being provided with a plurality of guide holes corresponding to the plurality of slide bars (330), and the plurality of guide holes of the lifting block (320) being respectively matched with the plurality of slide bars (330).

3. The temple pin insertion mechanism of the injection molding machine according to claim 1, characterized in that: The fixed seat (100) comprises a horizontal seat body (120) and a vertical seat body (110), the horizontal seat body (120) and the vertical seat body (110) are fixedly connected, the horizontal seat body (120) is fixedly connected to the main body of the injection molding machine (600), and slide grooves are provided on both sides of the vertical seat body (110), the direction of the slide grooves is consistent with the up and down direction, and the adjustment back plate (200) cooperates with the slide grooves of the vertical seat body (110).

4. The temple pin insertion mechanism of the injection molding machine according to claim 1, characterized in that: A first positioning plate (210) is provided on the upper portion of the adjusting back plate (200), a second positioning plate (111) is provided on the vertical seat body (110), a positioning screw (220) passes through the first positioning plate (210) and the second positioning plate (111), and the positioning screw (220) is respectively fixed to the first positioning plate (210) and the second positioning plate (111) by a plurality of positioning nuts.

5. The temple pin insertion mechanism of the injection molding machine according to claim 3, characterized in that: The horizontal seat body (120) of the fixed seat (100) comprises a transverse plate (121), a longitudinal plate (122) and a base plate (123). The longitudinal plate (122), the transverse plate (121) and the base plate (123) are stacked in sequence from top to bottom. The base plate (123) is fixedly connected to the frame (610) of the injection molding machine (600). The transverse plate (121) and the base plate (123) are matched by a slide groove. The moving direction of the transverse plate (121) is left-right. The longitudinal plate (122) and the transverse plate (121) are also matched by a slide groove. The moving direction of the longitudinal plate (122) is front-back.

6. The temple pin insertion mechanism of the injection molding machine according to claim 5, characterized in that: The fixing seat (100) further comprises a first adjustment component and a second adjustment component, wherein the first adjustment component comprises a first adjustment screw (131), a first positioning nut (132) and a first positioning block (133), wherein the first positioning block (133) is fixedly connected to the longitudinal movement plate (122), and the first positioning nut (132) is fixedly connected to the transverse movement plate (121), and when the first adjustment screw (131) is matched with the first positioning nut (132), the end of the first adjustment screw (131) is supported on the first positioning block (133); The second adjustment assembly comprises a second adjustment screw (141), a second positioning nut (142) and a second positioning block (143); the second positioning block (143) is fixedly connected to the transverse plate (121); the second positioning nut (142) is fixedly connected to the base plate (123); after the second adjustment screw (141) and the second positioning nut (142) are matched, the end of the second adjustment screw (141) is supported on the second positioning block (143).

7. A method for inserting temple pins using the temple pin insertion mechanism of the injection molding machine according to any one of claims 1 to 6, comprising the following steps: a) controlling the mold (620) of the injection molding machine (600) to move gradually until the mold closing action is completed; b) dividing the total stroke of the screw during the injection molding process of the injection molding machine (600) into a first stroke and a second stroke, wherein the distance of the first stroke accounts for 70% to 80% of the total stroke of the screw, and the distance of the second stroke accounts for 20% to 30% of the total stroke of the screw; Starting the injection cylinder of the injection molding machine (600) to inject the molten material into the temple mold cavity formed by the mold (620), controlling the screw of the injection molding machine (600) to gradually move toward the mold (620) until it stops at the end of the first stroke, and stopping the injection cylinder of the injection molding machine (600); c) controlling the temple pin insertion mechanism of the injection molding machine, and using the lifting assembly to move the plurality of pins (500) heated by the heating plate (400) downward and extend into the corresponding temple mold cavity, until the lifting cylinder (310) of the lifting assembly extends to the maximum stroke and then stops; d) restarting the injection cylinder of the injection molding machine (600), controlling the screw of the injection molding machine (600) to move toward the mold (620) until it stops at the end of the second stroke, completing the injection action, and stopping the injection cylinder of the injection molding machine (600); e) After the injection molding is completed, the mold is opened by 2 mm and maintained for 0.2 seconds, and then the lifting component of the temple pin insertion mechanism of the injection molding machine is controlled to move the pin (500) upward until the pin (500) moves out of the temple mold cavity and stops.

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