A linkage type injection molding insert ejection mechanism and injection molded product marking device

Abstract

The application discloses a linkage type injection molding insert ejection mechanism, which comprises a rack, a supporting seat for supporting injection molded parts is arranged at the top of the rack, and at least two pressing assemblies for pressing the injection molded parts are arranged on both sides of the supporting seat; at least one limiting seat is detachably arranged on the supporting seat, each limiting seat corresponds to two inserts, and a rectangular hole for the inserts to pass through is formed in the limiting seat; two first and second follow-up ejection assemblies for respectively ejecting corresponding inserts are arranged below the supporting seat, a first ejection assembly matched with the first follow-up ejection assembly is arranged at one end of the supporting seat, and a second ejection assembly matched with the second follow-up ejection assembly is arranged below the supporting seat. The application also discloses an injection molded product marking device. The ejection assembly and the follow-up ejection assembly are synchronously matched, a pushing and pulling resultant force is formed, the inserts are uniformly stressed, and the inserts are smoothly pulled out.

Description

Technical Field

[0001] This invention relates to the field of injection molding insert ejection technology, specifically a linkage injection molding insert ejection mechanism and an injection molding product marking device. Background Technology

[0002] Currently used plastic casings have inserts attached during mold development. During injection molding, the inserts containing the product need to be removed from the mold after injection molding. A robotic arm is used to remove the inserts and place them on a positioning fixture. After the mold inserts are positioned, they are transported to a designated location and, through a series of disassembly actions, the product is removed, achieving the separation of the product from the inserts. After completion, the robotic arm then sends the inserts back into the mold.

[0003] An existing publication (CN115723306B) discloses an injection molding insert ejection device, including a frame, a translation mechanism, an upward-pushing ejector pin mechanism, a side-push-angled pin mechanism, a downward-push-angled pin mechanism, and a downward ejection structure. The translation mechanism is movably mounted on the frame in a first direction. The upward-pushing ejector pin mechanism is fixed to the translation mechanism. The side-push-angled pin mechanism is mounted on the upward-pushing ejector pin mechanism and corresponds to it. The downward ejection structure includes a support structure and a downward-pushing structure. The support structure is fixed to the frame. The downward-push-angled pin mechanism is located below the downward-pushing structure and corresponds to it. The translation mechanism is used to move the upward-pushing ejector pin mechanism and the side-push-angled pin mechanism to below the downward-push-angled pin mechanism. This device can automatically separate the insert from the product, eliminating the need for manual operation, significantly reducing labor costs, and greatly improving overall process efficiency.

[0004] Existing technologies employ simple upward or unidirectional pushing structures, where the insert is subjected to pushing force on only one side, resulting in uneven force distribution. This can easily lead to tilting and jamming during ejection, and in severe cases, deformation and breakage of the insert. Furthermore, it can easily damage the injection molded part, resulting in low product yield. Moreover, the inserts in existing technologies scatter after ejection, making them difficult for subsequent robotic grippers to handle. Therefore, we propose a linked injection molded insert ejection mechanism and a marking device for injection molded products. Summary of the Invention

[0005] The purpose of this invention is to provide a linkage injection molding insert ejection mechanism and an injection molding product marking device to solve the problems in the prior art where the insert is only pushed upward or in one direction, resulting in uneven force distribution and easy tilting or jamming during ejection. In severe cases, this can lead to insert deformation and breakage, as well as damage to the injection molding part body and low product yield.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a linkage injection molding insert ejection mechanism, comprising a frame, a support seat for supporting the injection molding part installed at the top of the frame, and at least two clamping components for clamping the injection molding part installed on both sides of the frame at the support seat; at least one limiting seat is detachably installed on the support seat, each limiting seat corresponding to two inserts, and the limiting seat has a rectangular hole for the insert to pass through; two follow-up ejection components, a first follow-up ejection component and a second follow-up ejection component, are respectively provided below the support seat to follow up and eject the corresponding inserts, a first ejection component that cooperates with the first follow-up ejection component is provided at one end of the support seat, and a second ejection component that cooperates with the second follow-up ejection component is provided below the support seat.

[0007] Preferably, the support base is equipped with two limiting seats, and the top of the frame is equipped with two parallel second linear guide rails.

[0008] Preferably, the first follower ejection assembly and the second follower ejection assembly are symmetrically arranged. Both the first follower ejection assembly and the second follower ejection assembly include a fixed base and a third movable base. The fixed base is fixedly installed on the second linear guide rail, and the third movable base is slidably installed on the second linear guide rail. A push-pull cylinder is installed at the top of the third movable base, and one end of the push-pull cylinder is connected to the fixed base. A second limiting plate is installed at the end of the third movable base away from the fixed base. A first limiting plate is installed on one side of the second limiting plate, and a slot for inserting the insert is formed between the first limiting plate and the second limiting plate.

[0009] Preferably, both the first limiting plate and the second limiting plate have an inclined flared structure at their ends near the slot, and a proximity sensor of the sensing insert is installed on one side of the first limiting plate.

[0010] Preferably, the first ejection assembly includes a first servo screw assembly, a first movable seat, and a first ejection rod. The first movable seat is slidably mounted on a second linear guide rail. The first movable seat is equipped with two first ejection rods that insert the injection molded part and eject the insert. The first servo screw assembly is mounted on a frame and drives the first movable seat to reciprocate. The frame is equipped with two first slotted photoelectric switches. A first sensing plate that cooperates with the first slotted photoelectric switches is mounted at the bottom of the first movable seat. The second ejection assembly includes a second servo screw assembly, a second movable seat, and a second ejection rod. The second movable seat is slidably mounted on a second linear guide rail. The second movable seat is equipped with two second ejection rods that eject the insert. The second servo screw assembly is mounted on a frame and drives the second movable seat to reciprocate. The frame is equipped with two second slotted photoelectric switches. A second sensing plate that cooperates with the second slotted photoelectric switches is mounted at the bottom of the second movable seat. Both the first servo screw assembly and the second servo screw assembly are equipped with pressure sensors to detect the ejection force in real time and automatically adjust the thrust; the front ends of the first ejector rod and the second ejector rod are equipped with elastic buffer heads to prevent impact damage to the insert and injection molded part during ejection.

[0011] Preferably, the first ejector rod is a cylindrical rod, and the first ejector rod and the first movable seat are detachably connected. The second ejector rod is Z-shaped, and the second ejector rod and the second movable seat are detachably connected.

[0012] Preferably, the clamping assembly includes a rotary cylinder, a rotary arm, and a pressure head. The rotary cylinder drives the rotary arm to rotate, and a pressure head is adjustablely mounted on one end of the rotary arm. The bottom of the pressure head is a rubber structure.

[0013] A marking device for injection molded products includes the aforementioned linkage injection insert ejection mechanism, and further includes a servo linear module, a marking mechanism, and a first linear guide rail. The servo linear module and the first linear guide rail are both mounted on a frame. The marking mechanism is slidably mounted on the first linear guide rail, and the servo linear module drives the marking mechanism to reciprocate. The frame is equipped with two third slotted photoelectric switches, and the marking mechanism is equipped with a third sensing element that cooperates with the third slotted photoelectric switches.

[0014] Preferably, the marking mechanism includes a base plate and a manual lead screw module. The manual lead screw module is slidably mounted on the base plate and drives the laser marking device to move up and down. A fixed plate is slidably mounted on the laser marking device. A vertical rod is mounted on the fixed plate. A horizontal rod is adjustablely mounted on the vertical rod. A bracket is mounted on the horizontal rod. A photoelectric sensor is mounted on the bracket. Buffer mounting seats are mounted on both sides of the base plate located on the manual lead screw module. Hydraulic buffers are mounted on the buffer mounting seats.

[0015] Preferably, a linkage interlock module is provided between the marking mechanism and the ejection mechanism; the linkage interlock module includes a signal acquisition unit, a logic control unit, an execution interlock unit, and a safety protection unit; the signal acquisition unit is used to acquire the insert positioning signal, ejection completion signal, marking positioning signal, and clamping status signal; the logic control unit executes the interlock logic according to the acquired signals, and allows the marking mechanism to start only when the insert is fully ejected and the injection molded part is fixed in place; the execution interlock unit is electrically connected to the ejection mechanism driver, the marking mechanism power supply, and the pneumatic solenoid valve respectively to realize action interlock; the safety protection unit triggers emergency stop and alarm in case of ejection abnormality or marking failure.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This application adopts the first ejection component and the first follower ejection component, the second ejection component and the second follower ejection component to work in sync to form a push and pull force, so that the insert is subjected to uniform force and the pull-out is smooth. This can avoid the insert from being skewed, stuck, or broken, as well as the injection molded parts from being pulled or deformed, and greatly improve the separation success rate and product yield.

[0017] 2. The ends of the first and second limiting plates are equipped with inclined flared structures, which can automatically guide the insert into the slot, reducing the accuracy requirements for loading and positioning. Combined with proximity sensors to detect the insert's positioning status in real time, it ensures accurate clamping and reliable operation, effectively improving the stability of automated operation. After the insert detaches from the injection molded part, it moves with the slot, solving the problem of messy insert detachment positions in traditional methods. This application facilitates the subsequent removal of the insert by the robotic arm. The insert includes an insert body and a vertical plate. When the insert is ejected, the lower part of the vertical plate is inserted into the slot, so the insert remains on the follow-up ejection assembly after ejection, facilitating subsequent gripping by the robotic arm.

[0018] 3. The first ejector rod adopts a cylindrical rod structure, which can penetrate the injection molded part to achieve direct pushing (the first ejector rod is adapted to the injection molded part's conduit without damaging the injection molded part); the second ejector rod adopts a Z-shaped structure, which can avoid the complex structure of the product to achieve pushing, and is compatible with different injection molded parts and insert combinations; the limit seat is detachable and can be quickly replaced to adapt to different specifications of products, with greater versatility and flexibility. The first ejector rod and the first movable seat are detachably connected, and the second ejector rod and the second movable seat are detachably connected. The detachable connection allows for the replacement of different ejector rods according to different products and inserts.

[0019] 4. The clamping assembly uses a rotary cylinder to drive the rotating arm and the pressure head. The bottom of the pressure head is made of rubber, which provides uniform clamping force and does not damage the surface of the workpiece. Multiple clamping assemblies are arranged on both sides of the support base to fix the injection molded parts, prevent the workpiece from shifting during ejection and marking, and ensure the accuracy of the operation.

[0020] 5. The first ejection assembly, the second ejection assembly, and the marking mechanism are all equipped with slotted photoelectric switches and induction plates, which can accurately limit the movement stroke and avoid overshooting or overpulling that could damage the workpiece or cause collisions in the mechanism; the marking mechanism is equipped with a hydraulic damper, which can buffer and reduce shock, improve service life and safety.

[0021] 6. This application integrates the insert ejection mechanism and the laser marking mechanism into one unit. After the injection-molded part is separated from the insert, the laser marking device is directly driven by the servo linear module for marking. Multiple processes are completed in one clamping, reducing transfer links, shortening cycle time, and significantly improving the efficiency of automated production. Each motion mechanism is arranged based on the second and first linear guides, resulting in a neat structural layout and smooth movement. The manual lead screw module can quickly adjust the height of the laser marking device, and can be locked and fixed after adjustment. The debugging and maintenance operations are simple, reducing the cost of use. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the upper part of the present invention; Figure 3 This is the present invention. Figure 2 Partial structural diagram; Figure 4 This is a schematic diagram of the structure of the first ejection component and the second ejection component of the present invention; Figure 5 This is a schematic diagram of the structure of the first follower ejection component (second follower ejection component) of the present invention; Figure 6 This is a schematic diagram of the structure of the first follower ejection component (second follower ejection component) of the present invention when placing the insert; Figure 7 This is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 8 This is a schematic diagram of the marking mechanism of the present invention; Figure 9 This is a schematic diagram of the structure when the present invention is in use.

[0023] In the diagram: 1. Frame; 2. First ejection assembly; 3. Support base; 4. Second ejection assembly; 5. Clamping assembly; 6. Servo linear module; 7. Marking mechanism; 8. First linear guide rail; 9. Limit seat; 10. First follower ejection assembly; 11. Second follower ejection assembly; 12. Second linear guide rail; 201. First servo screw assembly; 202. First moving base; 203. First ejection rod; 401. Second servo screw assembly; 402. Second moving base; 403. Second ejection rod; 501. Rotary cylinder; 502. 503. Rotating arm; 704. Pressure head; 705. Base plate; 706. Buffer mounting base; 707. Manual lead screw module; 708. Laser marking device; 709. Fixing plate; 7000. Vertical rod; 701. Horizontal rod; 702. Bracket; 703. Photoelectric sensor; 1004. Fixing base; 1005. Third moving base; 1006. Push-pull cylinder; 1007. First limiting plate; 1008. Second limiting plate; 1009. Inclined flared structure; 1000. Proximity sensor; 2000. Insert; 3000. Injection molded part. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0025] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment of the invention, a linkage injection molding insert ejection mechanism includes a frame 1, a support seat 3 for supporting the injection molding part 3000 is installed at the top of the frame 1, and at least two clamping components 5 for clamping the injection molding part 3000 are installed on both sides of the frame 1 located on the support seat 3.

[0026] The support base 3 is detachably equipped with at least one limiting seat 9, which is used to limit the injection molded part 3000. The limiting seat 9 can be selected according to the type of injection molded part 3000. Each limiting seat 9 corresponds to two inserts 2000. The limiting seat 9 has a rectangular hole for the insert 2000 to pass through. The support base 3 is equipped with two limiting seats 9, and two parallel second linear guides 12 are installed at the top of the frame 1. The robotic arm transfers the injection molded part 3000 and the inserts 2000 as a whole to the support base 3 at the top of the frame 1. The detachable limiting seat 9 on the support base 3 precisely positions the injection molded part 3000, and the inserts 2000 extend downward into the corresponding component through the rectangular hole of the limiting seat 9.

[0027] Below the support base 3 are two follower ejection components: a first follower ejection assembly 10 and a second follower ejection assembly 11, which respectively follow and eject the corresponding inserts 2000. One end of the support base 3 has a first ejection assembly 2 that cooperates with the first follower ejection assembly 10, and below the support base 3 is a second ejection assembly 4 that cooperates with the second follower ejection assembly 11. After the injection molded part 3000 is placed on the support base 3, it is limited by a limiting seat 9. At this time, the corresponding inserts 2000 are inserted into the first follower ejection assembly 10 and the second follower ejection assembly 11, respectively. The first ejection assembly 2 pushes the insert 2000 in one direction, and the first follower ejection assembly 10 pulls the insert 2000 in the same direction. Similarly, the second ejection assembly 4 pushes the insert 2000 in one direction (opposite to the ejection direction of the first follower ejection assembly 10), and the second follower ejection assembly 11 pulls the insert 2000 in the same direction.

[0028] The first follower ejection assembly 10 and the second follower ejection assembly 11 are symmetrically arranged. Both the first follower ejection assembly 10 and the second follower ejection assembly 11 include a fixed base 1001 and a third movable base 1002. The fixed base 1001 is fixedly installed on the second linear guide rail 12, and the third movable base 1002 is slidably installed on the second linear guide rail 12. A push-pull cylinder 1003 is installed at the top of the third movable base 1002, and one end of the push-pull cylinder 1003 is connected to the fixed base 1001. The third movable seat 1002 is equipped with a second limiting plate 1005 at one end away from the fixed seat 1001. A first limiting plate 1004 is installed on one side of the second limiting plate 1005. A slot for insert 2000 is formed between the first limiting plate 1004 and the second limiting plate 1005. (Insert 2000 includes insert body and vertical plate. Insert body is detachably installed on vertical plate. Insert body is required for injection molding of part 3000. When insert 2000 is ejected, the lower part of vertical plate is inserted into the slot. Therefore, insert 2000 is still on the follow-up ejection assembly after ejection, which is convenient for subsequent gripping by the robot.) Both the first limiting plate 1004 and the second limiting plate 1005 have inclined flared structures 1006 at their ends near the slot. The inclined flared structures 1006 facilitate the insertion of the insert 2000 into the slot (that is, facilitate the insertion of the vertical plate of the insert 2000 into the slot). A proximity sensor 1007 for sensing the insert 2000 is installed on one side of the first limiting plate 1004. The insert 2000 slides into the clamping slot formed by the inclined flared structures 1006 at the ends of the first limiting plate 1004 and the second limiting plate 1005. After the proximity sensor 1007 on the first limiting plate 1004 detects that the insert 2000 has arrived in place, the linkage ejection process begins.

[0029] See Figure 4 The first ejection assembly 2 includes a first servo screw assembly 201, a first movable seat 202, and a first ejection rod 203. The first movable seat 202 is slidably mounted on a second linear guide rail 12. The first movable seat 202 is equipped with two first ejection rods 203 (the first ejection rods 203 are adapted to the pipes of the injection molded part 3000) that insert into the injection molded part 3000 and eject the part 2000. The first servo screw assembly 201 is mounted on the frame 1 and drives the first movable seat 202 to reciprocate. The frame 1 is equipped with two first slotted photoelectric switches. The bottom end of the first movable seat 202 is equipped with a first sensing plate that cooperates with the first slotted photoelectric switches. The two first slotted photoelectric switches are used to limit the movement range of the first movable seat 202, preventing excessive movement and avoiding damage to the injection molded part 3000.

[0030] See Figure 4The second ejection assembly 4 includes a second servo screw assembly 401, a second movable seat 402, and a second ejection rod 403. The second movable seat 402 is slidably mounted on the second linear guide rail 12. The second movable seat 402 is equipped with two second ejection rods 403 for ejecting the insert 2000. The second servo screw assembly 401 is mounted on the frame 1 and drives the second movable seat 402 to reciprocate. The frame 1 is equipped with two second slotted photoelectric switches. The bottom end of the second movable seat 402 is equipped with a second sensing plate that cooperates with the second slotted photoelectric switches. The two second slotted photoelectric switches are used to limit the movement range of the second movable seat 402, preventing excessive movement and avoiding damage to the injection molded part 3000. The first ejector rod 203 is a cylindrical rod, and the first ejector rod 203 and the first movable seat 202 are detachably connected. The second ejector rod 403 is Z-shaped, and the second ejector rod 403 and the second movable seat 402 are detachably connected. The detachable connection allows for the replacement of different ejector rods according to different products and inserts. The Z-shaped second ejector rod 403 is adapted to the shape of the injection molded part 3000, and the second ejector rod 403 does not penetrate the injection molded part 3000. The first servo screw assembly 201 of the first ejection assembly 2 drives the first movable seat 202 to move along the second linear guide rail 12, and the cylindrical first ejector rod 203 penetrates the injection molded part 3000 to push the insert 2000.

[0031] Both the first servo screw assembly 201 and the second servo screw assembly 401 are equipped with pressure sensors to detect the ejection force in real time and automatically adjust the thrust; the front ends of the first ejector rod 203 and the second ejector rod 403 are equipped with elastic buffer heads to prevent impact damage to the insert 2000 and the injection molded part 3000 during ejection.

[0032] See Figure 5 and Figure 6 Simultaneously, the push-pull cylinder 1003 of the first follower ejection assembly 10 operates, driving the third moving seat 1002 to move synchronously. The slot limits the insert 2000 and applies force in the same direction as the ejection rod, forming a combined force to pull the insert 2000 out of the injection molded part 3000. The second ejection assembly 4 and the second follower ejection assembly 11 are arranged symmetrically. The Z-shaped second ejection rod 403 is adapted to the non-penetrating structure of the injection molded part 3000 to push the insert 2000 (here, non-penetrating means that the Z-shaped second ejection rod 403 does not penetrate the outer wall of the injection molded part 3000, but the injection molded part 3000 is provided with a through hole at the insert 2000 for the Z-shaped second ejection rod 403 to push out the insert 2000). It works in conjunction with the clamping assembly to pull synchronously, completing the separation of the insert 2000 on the other side. The slotted photoelectric switch on the frame 1, together with the sensing plate, limits the movement stroke to prevent over-rushing and damage to the workpiece.

[0033] See Figure 7The clamping assembly 5 includes a rotary cylinder 501, a rotary arm 502, and a pressure head 503. The rotary cylinder 501 drives the rotary arm 502 to rotate. The pressure head 503 is adjustablely mounted on one end of the rotary arm 502, and the bottom of the pressure head 503 is a rubber structure. The rotary cylinder 501 drives the rotary arm 502 to rotate, and the pressure head 503 with its lower rubber structure clamps the injection molded part 3000, preventing the workpiece from shifting or deforming during ejection.

[0034] See Figure 1 and Figure 2 A marking device for injection molded products includes the aforementioned linkage injection insert ejection mechanism, and further includes a servo linear module 6, a marking mechanism 7, and a first linear guide rail 8. Both the servo linear module 6 and the first linear guide rail 8 are mounted on a frame 1. The marking mechanism 7 is slidably mounted on the first linear guide rail 8, and the servo linear module 6 drives the marking mechanism 7 to reciprocate. The frame 1 is equipped with two third slotted photoelectric switches, and the marking mechanism 7 is equipped with a third sensing element that cooperates with the third slotted photoelectric switches.

[0035] See Figure 8 The marking mechanism 7 includes a base plate 701 and a manual lead screw module 703. The manual lead screw module 703 is slidably mounted on the base plate 701 and drives the laser marking device 704 to move up and down. A fixing plate 705 is slidably mounted on the laser marking device 704. A vertical rod 706 is mounted on the fixing plate 705. A horizontal rod 707 is adjustablely mounted on the vertical rod 706. A bracket 708 is mounted on the horizontal rod 707. A photoelectric sensor 709 is mounted on the bracket 708.

[0036] The base plate 701 is equipped with buffer mounting seats 702 on both sides of the manual lead screw module 703, and the buffer mounting seats 702 are equipped with hydraulic buffers.

[0037] The marking mechanism 7 and the ejection mechanism are connected by a linkage interlock module. The linkage interlock module includes a signal acquisition unit, a logic control unit, an execution interlock unit, and a safety protection unit. The signal acquisition unit is used to acquire the insertion part 2000 positioning signal, the ejection completion signal, the marking positioning signal, and the clamping status signal. The logic control unit executes the interlock logic according to the acquired signals, allowing the marking mechanism 7 to start only when the insertion part 2000 is fully ejected and the injection molded part 3000 is fixed in place. The execution interlock unit is electrically connected to the ejection mechanism driver, the power supply of the marking mechanism 7, and the pneumatic solenoid valve to achieve action interlock. The safety protection unit triggers an emergency stop and alarm in case of ejection abnormality or marking failure.

[0038] See Figure 9The working principle of this invention is as follows: the robotic arm transfers the injection molded part 3000 and the insert 2000 together to the support seat 3 at the top of the frame 1. The detachable limiting seat 9 on the support seat 3 precisely positions the injection molded part 3000. The insert 2000 passes through the rectangular hole of the limiting seat 9 and extends downward into the corresponding component. The clamping components 5 on both sides of the frame 1 are activated, the rotary cylinder 501 drives the rotary arm 502 to rotate, and the pressure head 503 of the lower rubber structure clamps the injection molded part 3000 to prevent the workpiece from shifting or deforming during the ejection process.

[0039] The insert 2000 slides into the clamping slot formed by the inclined flared structure 1006 at the ends of the first limiting plate 1004 and the second limiting plate 1005. After the proximity sensor 1007 on one side of the first limiting plate 1004 detects that the insert 2000 is in place, the linkage ejection process begins.

[0040] The ejection process adopts a two-way linkage mode of push and pull: the first servo screw assembly 201 of the first ejection component 2 drives the first moving seat 202 to move along the second linear guide rail 12, and the cylindrical first ejection rod 203 penetrates the injection molded part 3000 to push the insert 2000; at the same time, the push-pull cylinder 1003 of the first follow-up ejection component 10 works, driving the third moving seat 1002 to move synchronously, the slot limits the insert 2000 and applies force in the same direction as the ejection rod, forming a combined force to pull the insert 2000 out of the injection molded part 3000, and after being pulled out, the insert 2000 moves with the slot to detach from the injection molded part 3000. The second ejection assembly 4 and the second follower ejection assembly 11 are arranged symmetrically. The Z-shaped second ejection rod 403 is adapted to push the insert 2000 of the injection molded part 3000 structure. It works in conjunction with the clamping assembly to pull synchronously and complete the separation of the insert 2000 on the other side. The slotted photoelectric switch on the frame 1 works in conjunction with the induction plate to limit the movement stroke and prevent overshoot damage to the workpiece.

[0041] After the insert 2000 and the injection molded part 3000 are completely separated, the servo linear module 6 drives the marking mechanism 7 to move along the first linear guide rail 8 to the working position. The photoelectric sensor 709 positions the marking position, and the manual screw module 703 adjusts the height of the laser marking device 704. The laser marking device 704 completes the marking on the injection molded product. The hydraulic buffer on the base plate 701 plays a shock absorption and buffering role to ensure the marking accuracy.

[0042] After marking is completed, each mechanism is reset in sequence: the first ejection component 2 and the second ejection component 4 return to their original positions, the first follower ejection component 10 and the second follower ejection component 11 are released and reset, the clamping component 5 is lifted, and the robotic arm takes away the finished injection molded part 3000 and enters the next work cycle to achieve continuous automated production.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A linkage-type injection molding insert ejection mechanism, comprising a frame (1), characterized in that: The top of the frame (1) is equipped with a support base (3) for supporting the injection molded part (3000), and at least two clamping assemblies (5) for clamping the injection molded part (3000) are installed on both sides of the frame (1) located on the support base (3). The support base (3) is detachably mounted with at least one limiting seat (9), each limiting seat (9) corresponds to two inserts (2000), and the limiting seat (9) has a rectangular hole through which the inserts (2000) pass; The support base (3) is provided with two first follower ejection components (10) and second follower ejection components (11) respectively following the ejection of the corresponding insert (2000). The support base (3) is provided with a first ejection component (2) that cooperates with the first follower ejection component (10) at one end, and a second ejection component (4) that cooperates with the second follower ejection component (11) is provided below the support base (3). The support base (3) is equipped with two limit seats (9), and the top of the frame (1) is equipped with two parallel second linear guide rails (12). The first follower ejection assembly (10) and the second follower ejection assembly (11) are symmetrically arranged. Both the first follower ejection assembly (10) and the second follower ejection assembly (11) include a fixed seat (1001) and a third movable seat (1002). The fixed seat (1001) is fixedly installed on the second linear guide rail (12). The third movable seat (1002) is slidably installed on the second linear guide rail (12). A push-pull cylinder (1003) is installed at the top of the third movable seat (1002). One end of the push-pull cylinder (1003) is connected to the fixed seat (1001). A second limiting plate (1005) is installed at the end of the third movable seat (1002) away from the fixed seat (1001). A first limiting plate (1004) is installed on one side of the second limiting plate (1005). A slot for insert (2000) is formed between the first limiting plate (1004) and the second limiting plate (1005).

2. The linkage injection molding insert ejection mechanism according to claim 1, characterized in that: The first limiting plate (1004) and the second limiting plate (1005) are both provided with inclined flared structures (1006) at the ends near the slot. The first limiting plate (1004) is provided with a proximity sensor (1007) of the sensing insert (2000) on one side.

3. The linkage injection molding insert ejection mechanism according to claim 1, characterized in that: The first ejection assembly (2) includes a first servo screw assembly (201), a first moving seat (202), and a first ejection rod (203). The first moving seat (202) is slidably mounted on the second linear guide rail (12). The first moving seat (202) is equipped with two first ejection rods (203) that insert injection molded parts (3000) and eject the inserts (2000). The first servo screw assembly (201) is mounted on the frame (1). The first servo screw assembly (201) drives the first moving seat (202) to move back and forth. The frame (1) is equipped with two first slotted photoelectric switches. The bottom of the first moving seat (202) is equipped with a first sensing plate that cooperates with the first slotted photoelectric switch. The second ejection assembly (4) includes a second servo screw assembly (401), a second moving seat (402), and a second ejection rod (403). The second moving seat (402) is slidably mounted on the second linear guide rail (12). The second moving seat (402) is equipped with two second ejection rods (403) for ejecting the insert (2000). The second servo screw assembly (401) is mounted on the frame (1). The second servo screw assembly (401) drives the second moving seat (402) to reciprocate. The frame (1) is equipped with two second slotted photoelectric switches. The bottom of the second moving seat (402) is equipped with a second sensing plate that cooperates with the second slotted photoelectric switch. Both the first servo screw assembly (201) and the second servo screw assembly (401) are equipped with pressure sensors to detect the ejection force in real time and automatically adjust the thrust; the front ends of the first ejector rod (203) and the second ejector rod (403) are equipped with elastic buffer heads.

4. The linkage injection molding insert ejection mechanism according to claim 3, characterized in that: The first ejector rod (203) is a cylindrical rod, and the first ejector rod (203) and the first movable seat (202) are detachably connected. The second ejector rod (403) is Z-shaped, and the second ejector rod (403) and the second movable seat (402) are detachably connected.

5. The linkage injection molding insert ejection mechanism according to claim 1, characterized in that: The pressing assembly (5) includes a rotary cylinder (501), a rotary arm (502), and a pressure head (503). The rotary cylinder (501) drives the rotary arm (502) to rotate. The pressure head (503) is adjustablely mounted on one end of the rotary arm (502). The bottom of the pressure head (503) is a rubber structure.

6. A marking device for injection molded products, characterized in that: The linkage injection molding insert ejection mechanism according to any one of claims 1-5 further includes a servo linear module (6), a marking mechanism (7), and a first linear guide rail (8). The servo linear module (6) and the first linear guide rail (8) are both mounted on the frame (1). The marking mechanism (7) is slidably mounted on the first linear guide rail (8). The servo linear module (6) drives the marking mechanism (7) to reciprocate. The frame (1) is equipped with two third slotted photoelectric switches. The marking mechanism (7) is equipped with a third sensing plate that cooperates with the third slotted photoelectric switches.

7. A marking device for injection molded products according to claim 6, characterized in that: The marking mechanism (7) includes a base plate (701) and a manual screw module (703). The manual screw module (703) is slidably mounted on the base plate (701). The manual screw module (703) drives the laser marking device (704) to move up and down. A fixed plate (705) is slidably mounted on the laser marking device (704). A vertical rod (706) is mounted on the fixed plate (705). A horizontal rod (707) is adjustablely mounted on the vertical rod (706). A bracket (708) is mounted on the horizontal rod (707). A photoelectric sensor (709) is mounted on the bracket (708). Buffer mounting seats (702) are mounted on both sides of the base plate (701) located on the manual screw module (703). A hydraulic buffer is mounted on the buffer mounting seat (702).

8. A marking device for injection molded products according to claim 7, characterized in that: The marking mechanism (7) and the ejection mechanism are provided with a linkage interlock module; the linkage interlock module includes a signal acquisition unit, a logic control unit, an execution interlock unit and a safety protection unit; the signal acquisition unit is used to acquire the insertion part (2000) arrival signal, ejection completion signal, marking positioning signal and clamping status signal; the logic control unit executes the interlock logic according to the acquired signals, and allows the marking mechanism to start only when the insertion part (2000) is fully ejected and the injection molded part (3000) is fixed in place; the execution interlock unit is electrically connected to the ejection mechanism driver, the marking mechanism power supply and the pneumatic solenoid valve respectively to realize action interlock; the safety protection unit triggers emergency stop and alarm when ejection is abnormal or marking is faulty.

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