Injection table mechanism for injection molding machine

Abstract

The invention relates to the technical field of injection molding machines, and provides an injection table mechanism for an injection molding machine, the injection table mechanism comprises an injection table seat and injection moving screw rod assemblies, the injection table seat is movably close to or far away from a mold locking head plate through the injection moving screw rod assemblies, and the injection moving screw rod assemblies are arranged on the left and right outer sides of the injection table seat; each injection moving screw rod assembly is detachably installed between the outer side of the mold locking head plate and the outer side of the injection table base, and the mold locking head plate is detachably installed on the injection molding machine. According to the injection table mechanism for the injection molding machine, the injection moving screw rod assemblies are arranged on the left outer side and the right outer side of the injection table base, and a detachable connection mode is adopted, so that the adaptability and the flexibility are remarkably improved. Through the first detachable connecting and matching structure between the mold locking head plate and the injection moving screw rod assembly and the second detachable connecting and matching structure between the injection moving screw rod assembly and the injection table seat, a user can replace mold locking head plates with different sizes and specifications on the same injection molding machine without replacing the whole injection table mechanism; a customer does not need to purchase too many injection table mechanisms, and the use requirements of the customer are met.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding machines, and in particular to a shooting platform mechanism for injection molding machines. Background Art

[0002] The shooting platform mechanism used in existing injection molding machines includes a first shooting screw group and a second shooting screw group. The first shooting screw group and the second shooting screw group are arranged on both sides of the injection front seat. The two inner sides of the injection front seat are provided with mounting holes for installing the screws. In this way, the spacing between the two screws in the first shooting screw group and the second shooting screw group cannot be adjusted, and they cannot adapt to clamping head plates of different sizes. In addition, the first shooting screw group and the second shooting screw group are arranged on the injection front seat, that is, the first shooting screw group and the second shooting screw group are arranged close to the front end of the shooting platform. If the thickness of the clamping head plate is relatively thick, the thickness of the clamping head plate will occupy the shooting stroke of the screw. Therefore, when the customer replaces the thicker clamping head plate, the shooting stroke of the screw is relatively short and cannot play the corresponding shooting role. At this time, the customer satisfaction is not good. For example, Chinese Patent Publication No. CN116749463A discloses a compact shooting structure, assembly method and application of a fully electric injection molding machine. Summary of the Invention

[0003] The present invention proposes a shooting platform mechanism for an injection molding machine. The shooting platform mechanism for the injection molding machine significantly improves adaptability and flexibility by arranging the shooting screw assembly on the left and right outer sides of the shooting platform seat and adopting a detachable connection method. The first detachable connection and matching structure between the clamping head plate and the shooting screw assembly, and the second detachable connection and matching structure between the shooting screw assembly and the shooting platform seat, enable users to replace the clamping head plates of different sizes on the same injection molding machine without replacing the entire shooting platform mechanism. Customers do not need to purchase too many shooting platform mechanisms, which meets their usage needs. In addition, the external layout of the shooting screw assembly makes it easy for customers to remove and replace the shooting screw assembly on the shooting platform seat. This design is particularly suitable for injection molding scenarios for the production of products with multiple specifications, enhancing the versatility of the equipment and customer satisfaction.

[0004] A shooting platform mechanism for an injection molding machine designed for this purpose includes a shooting platform base and a shooting screw assembly. The shooting platform base can be moved closer to or away from a clamping head plate through the shooting screw assembly. The left and right outer sides of the shooting platform base are provided with shooting screw assemblies. Each shooting screw assembly is detachably installed between the outer sides of the clamping head plate and the shooting platform base, and the clamping head plate is detachably installed on the injection molding machine. Through a first detachable connection and matching structure between the clamping head plate and the shooting screw assembly, and a second detachable connection and matching structure between the shooting screw assembly and the shooting platform base, the clamping head plates of different sizes and specifications can be replaced on the injection molding machine.

[0005] The front end of the shooting screw assembly is detachably connected to the clamping head plate, and the rear end of the shooting screw assembly is detachably connected to the outer side of the shooting platform seat. The rear end of the shooting screw assembly is arranged close to the rear of the shooting platform seat, so that there is enough space at the front end of the shooting screw assembly to adapt to the installation of clamping head plates of different thicknesses.

[0006] The first detachable connection and cooperation structure includes a connecting rod arranged on the locking head plate, and a shooting and shifting connecting piece cooperated with the shooting and shifting screw assembly. A movable locking rod is provided between the connecting rod and the shooting and shifting connecting piece. The connecting rod and the shooting and shifting connecting piece are respectively plugged into the movable locking rod, and the movable locking rod is telescopically arranged between the connecting rod and the shooting and shifting connecting piece. The movable locking rod realizes the connection or separation of the connecting rod and the shooting and shifting connecting piece through axial telescopic movement.

[0007] A plug pin is provided between the said shooting and moving connecting piece and the movable locking rod. When the clamping head plate and the shooting and moving screw assembly are assembled, the plug pin is inserted into the shooting and moving connecting piece and the movable locking rod to lock the movable locking rod on the shooting and moving connecting piece. When the clamping head plate and the shot-shift screw assembly are disassembled, the plug pin is separated from the shot-shift connector and the movable locking rod, and the movable locking rod is axially retracted into the shot-shift connector and separated from the connecting rod; The connecting rod is detachably mounted on the clamping head plate.

[0008] The insertion and locking direction of the plug pin and the axial telescopic movement direction of the movable locking rod are perpendicular to each other and form a vertical and horizontal cross locking structure; The plug pin is inserted into or disengaged from the movable locking rod to achieve locking or unlocking between the movable locking rod and the shooting and moving connecting piece.

[0009] A pad is provided at the connection between the shooting screw assembly and the shooting platform seat. The pad is detachably installed at the connection between the shooting screw assembly and the shooting platform seat. By installing pads of different thicknesses or removing the pads, the distance between the shooting screw assemblies on the left and right sides of the shooting platform seat can be adjusted.

[0010] The shooting platform seat is provided with a transmission gear at the rear end of the shooting screw assembly corresponding to the shooting platform seat. The transmission gear is detachably mounted on the shooting platform seat and is rotatably arranged on the shooting platform seat. The rear end of each shooting screw assembly is provided with a screw gear meshing with the transmission gear. When adjusting the spacing between the shooting screw assemblies on the left and right sides of the shooting platform, the transmission gear with a different pitch circle diameter is replaced on the adjustment shooting platform, or the screw gear with a different pitch circle diameter is replaced on the rear end of the shooting screw assembly, and the replaced transmission gear maintains meshing transmission with the screw gear.

[0011] The shooting platform is provided with a shooting motor connected to the transmission gear, and a motor bracket for fixing the shooting motor; The injection molding machine is also provided on the injection molding machine base for driving the injection molding screw to operate, and a fixing plate for installing and fixing the injection molding machine. During the process of replacing the screw gear on the shooting platform, the injection motor and the fixing plate are removed from the shooting platform, and the shooting movement motor and the motor bracket are removed from the shooting platform; so as to remove the screw gear from the shooting platform.

[0012] The shooting platform seat is provided with a transverse extension portion and a bending portion connected to the transverse extension portion, and the fixing plate is detachably mounted on the rear end of the bending portion; The transmission gear is detachably mounted on the shooting platform seat along the transverse extension portion and the bending portion.

[0013] The shooting screw assembly includes a shooting spring seat, a nut sleeve and a shooting screw, and the first detachable connection matching structure includes a shooting connector provided between the clamping head plate and the shooting screw assembly; The shooting shift connection piece is inserted through the shooting shift spring seat, the nut sleeve is fixed on the shooting shift spring seat, and the shooting shift screw rod is inserted into the nut sleeve and the shooting shift connection piece; The shooting spring seat is provided with a shooting spring, and the shooting spring seat is provided with a guide rod, which penetrates the shooting spring seat, and both ends of the guide rod are provided with a connecting block, which is detachably mounted on the outside of the shooting platform seat; The shooting spring seat and the nut sleeve are fixed relative to the clamping head plate through the shooting connection piece; when the shooting screw rotates, the shooting platform seat can be moved closer to or away from the clamping head plate, and the guide rod can move forward and backward along the shooting spring seat through the connecting blocks at both ends. When the shooting platform seat is movable close to the die head plate, one of the connecting blocks acts on the shooting spring seat and squeezes the shooting spring, so that the shooting spring provides corresponding shooting pressure; The shooting screw rod is provided with a connecting seat detachably mounted on the shooting platform seat, and a pad between the connecting seat and / or the connecting block and the shooting platform seat is used to adjust the distance between the shooting screw rod and the outer side of the shooting platform seat.

[0014] The beneficial technical effects of the present invention are as follows: The shooting platform mechanism used in the injection molding machine significantly improves adaptability and flexibility by arranging the shooting screw assembly on the left and right outer sides of the shooting platform seat and adopting a detachable connection method. The first detachable connection and matching structure between the clamping head plate and the shooting screw assembly, and the second detachable connection and matching structure between the shooting screw assembly and the shooting platform seat, enable users to replace the clamping head plates of different sizes on the same injection molding machine without replacing the entire shooting platform mechanism. Customers do not need to purchase too many shooting platform mechanisms to meet their usage needs. In addition, the external layout of the shooting screw assembly makes it easy for customers to remove and replace the shooting screw assembly on the shooting platform seat. This design is particularly suitable for injection molding scenarios for the production of products with multiple specifications, enhancing the versatility of the equipment and customer satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure in which a spacer is provided between the shooting platform and the shooting screw assembly according to one embodiment of the present invention.

[0016] Figure 2 It is a schematic three-dimensional structural diagram of the unlocked state of the latch pin according to one embodiment of the present invention.

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the movable locking rod retracted into the injection-transfer connecting member after the plug pin is unlocked according to one embodiment of the present invention.

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0020] Figure 6 This is a schematic diagram of the exploded structure of the shooting screw assembly and the shooting platform assembly according to one embodiment of the present invention.

[0021] Figure 7 for Figure 6 Enlarged view of point C in the middle.

[0022] Figure 8 This is a schematic diagram of the exploded structure of the shooting screw assembly and the movable locking rod assembly according to one embodiment of the present invention.

[0023] Figure 9 for Figure 8 Enlarged view of point D in the middle.

[0024] Figure 10 This is a schematic diagram of the assembly and decomposition structure of the shooting screw assembly and the shooting connecting piece according to an embodiment of the present invention.

[0025] Figure 11 This is a schematic diagram of the assembly and decomposition structure of the shooting screw assembly and the shooting platform seat in an embodiment of the present invention without a spacer block.

[0026] Figure 12 This is a schematic diagram of the three-dimensional structure of the transmission gear disengaging from the injection seat along the lateral extension portion according to an embodiment of the present invention.

[0027] Figure 13 This is a schematic diagram of the three-dimensional structure of a transmission gear moving along the transverse extension portion to the bending portion according to an embodiment of the present invention.

[0028] Figure 14 This is a schematic diagram of the three-dimensional structure of the transmission gear finally separating from the injection seat along the bending portion according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application 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 application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] See also Figures 1-14 A shooting platform mechanism for an injection molding machine includes a shooting platform seat 3 and a shooting screw assembly 2. The shooting platform seat 3 can be moved close to or away from the clamping head plate 1 through the shooting screw assembly 2. The left and right outer sides of the shooting platform seat 3 are each provided with a shooting screw assembly 2. Each shooting screw assembly 2 is detachably installed between the outer sides of the clamping head plate 1 and the shooting platform seat 3, and the clamping head plate 1 is detachably installed on the injection molding machine. Through the first detachable connection and matching structure between the clamping head plate 1 and the shooting screw assembly 2, and the second detachable connection and matching structure between the shooting screw assembly 2 and the shooting platform seat 3, the clamping head plates 1 of different sizes and specifications can be replaced on the injection molding machine.

[0031] The shooting platform mechanism used in the injection molding machine significantly improves adaptability and flexibility by arranging the shooting screw assembly 2 on the left and right outer sides of the shooting platform seat 3 and adopting a detachable connection method. The first detachable connection and matching structure between the clamping head plate 1 and the shooting screw assembly 2, and the second detachable connection and matching structure between the shooting screw assembly 2 and the shooting platform seat 3, enable users to replace the clamping head plates 1 of different sizes on the same injection molding machine without replacing the entire shooting platform mechanism. Customers do not need to purchase too many shooting platform mechanisms to meet their usage needs. In addition, the external layout of the shooting screw assembly 2 makes it easy for customers to remove and replace the shooting screw assembly 2 on the shooting platform seat 3. This design is particularly suitable for injection molding scenarios for the production of products with multiple specifications, enhancing the versatility of the equipment and customer satisfaction.

[0032] The front end of the shooting screw assembly 2 is detachably connected to the clamping head plate 1, and the rear end of the shooting screw assembly 2 is detachably connected to the outer side of the shooting platform seat 3, and the rear end of the shooting screw assembly 2 is arranged close to the rear of the shooting platform seat 3, so that there is enough space at the front end of the shooting screw assembly 2 to adapt to the installation of clamping head plates 1 of different thicknesses.

[0033] The rear end of the shooting screw assembly 2 is installed close to the rear of the shooting platform seat 3, and the design of reserving sufficient space at the front end effectively solves the problem of the limitation of the shooting stroke due to the change in the thickness of the clamping head plate 1. By moving the force point of the shooting screw assembly 2 backward, the effective working stroke of the screw is extended. Even if a thicker clamping head plate 1 is installed, the shooting platform seat 3 can still maintain a sufficient moving distance to meet the injection requirements. In addition, the detachable connection method meets the requirements of replacing the clamping head plate 1 of different sizes. The user only needs to release the connection between the shooting screw assembly 2 and the clamping head plate 1. After replacing the clamping head plate 1, the spacing between the shooting screw assemblies 2 on both sides of the shooting platform seat 3 changes, so it is also necessary to release the connection between the shooting screw assembly 2 and the shooting platform seat 3. This does not require additional modification of the equipment structure. This design significantly improves the compatibility and maintenance convenience of the equipment, and is especially suitable for production environments where molds are frequently replaced.

[0034] The first detachable connection and cooperation structure includes a connecting rod 4 arranged on the locking head plate 1, and a shooting and moving connecting part 5 cooperated with the shooting and moving screw assembly 2, and a movable locking rod 6 is provided between the connecting rod 4 and the shooting and moving connecting part 5. The connecting rod 4 and the shooting and moving connecting part 5 are respectively plugged into the movable locking rod 6, and the movable locking rod 6 is telescopically arranged between the connecting rod 4 and the shooting and moving connecting part 5. The movable locking rod 6 realizes the connection or separation of the connecting rod 4 and the shooting and moving connecting part 5 through axial telescopic movement.

[0035] The first removable connection mechanism utilizes the axial telescopic movement of the movable locking rod 6 to quickly connect or disconnect the connecting rod 4 and the displacement connector 5, offering ease of operation and high reliability. The plug-in design of the connecting rod 4 and the displacement connector 5 ensures a secure connection between the clamping plate 1 and the displacement screw assembly 2, preventing loosening or shifting during displacement. The telescopic function of the movable locking rod 6 further simplifies disassembly. The user only needs to pull or push the movable locking rod 6 axially to complete assembly or separation, significantly reducing the time required to replace the clamping plate 1.

[0036] A plug pin 7 is provided between the said shooting and shifting connecting piece 5 and the movable locking rod 6. When the clamping head plate 1 and the shooting and shifting screw assembly 2 are assembled, the plug pin 7 penetrates the shooting and shifting connecting piece 5 and the movable locking rod 6 so that the movable locking rod 6 is locked on the shooting and shifting connecting piece 5. When the clamping head plate 1 and the shooting screw assembly 2 are disassembled, the plug pin 7 is separated from the shooting connection 5 and the movable locking rod 6, and the movable locking rod 6 is axially retracted into the shooting connection 5 and separated from the connecting rod 4; The connecting rod 4 is detachably mounted on the clamping head plate 1 .

[0037] In this embodiment, a connecting flange with bolts inserted therethrough is provided at one end of the connecting rod 4 , and the connecting flange is detachably mounted on the clamping head plate 1 by means of bolts.

[0038] The transverse insertion of the plug pin 7 forms a locking structure with the movable locking rod 6. When the plug pin 7 is inserted into the injection-shift connector 5 and the movable locking rod 6, the movable locking rod 6 is securely locked to prevent accidental disengagement due to vibration during the injection-shift process. For disassembly, simply pull out the plug pin 7, and the movable locking rod 6 will retract, achieving quick separation. The detachable installation of the connecting rod 4 further enhances flexibility. When the user replaces the clamping head plate 1, the original connecting rod 4 can be retained and installed on the new clamping head plate 1 after removal.

[0039] The insertion and locking direction of the plug pin 7 and the axial telescopic movement direction of the movable locking rod 6 are perpendicular to each other and form a vertical and horizontal cross locking structure; The plug pin 7 is inserted into or disengaged from the movable locking rod 6 to achieve locking or unlocking between the movable locking rod 6 and the shooting and shifting connecting piece 5.

[0040] Inserting and disengaging the latch pin 7 is intuitive and simple, requiring no specialized tools, reducing maintenance. This design also allows for high-strength mechanical locking in confined spaces, eliminating the rotational space required for traditional bolted connections. Complete disengagement of the latch pin 7 during unlocking ensures free extension and retraction of the movable locking rod 6, eliminating the risk of jamming. This locking method is particularly suitable for heavy-duty mechanical connections that require frequent disassembly.

[0041] In this embodiment, a circular locking hole for inserting a plug pin 7 is provided between the movable locking rod 6 and the shooting and displacement connecting piece 5 .

[0042] A pad 8 is provided at the connection between the shooting screw assembly 2 and the shooting platform seat 3. The pad 8 is detachably installed at the connection between the shooting screw assembly 2 and the shooting platform seat 3. By installing pads 8 of different thicknesses or removing the pads 8, the distance between the shooting screw assemblies 2 on the left and right sides of the shooting platform seat 3 can be adjusted.

[0043] The introduction of spacers 8 enables adjustment of the spacing between the left and right side shot screw assemblies 2 of the shooting platform 3. Users can adapt to different widths of the clamping head plate 1 by replacing spacers 8 with different thicknesses or removing them entirely. This adjustment method eliminates the need to replace the entire structure; simply adjusting the thickness of a specific spacer 8 achieves precise alignment, significantly reducing equipment modification costs. The standardized design of spacers 8 also simplifies spare parts management, allowing users to stock only a few commonly used thicknesses to cover most production needs. This design is particularly suitable for flexible manufacturing systems that produce small batches of multiple specifications.

[0044] The shooting platform seat 3 is provided with a transmission gear 9 at the rear end corresponding to the shooting screw assembly 2. The transmission gear 9 is detachably mounted on the shooting platform seat 3 and is rotatably arranged on the shooting platform seat 3. The rear end of each shooting screw assembly 2 is provided with a screw gear 10 meshing with the transmission gear 9. When adjusting the spacing between the shooting screw assembly 2 on the left and right sides of the shooting platform 3, the transmission gear 9 with a different pitch circle diameter is replaced on the shooting platform 3, or the screw gear 10 with a different pitch circle diameter is replaced on the rear end of the shooting screw assembly 2, and the replaced transmission gear 9 and the screw gear 10 maintain meshing transmission.

[0045] By varying the pitch diameter of the transmission gear 9 or lead screw gear 10, gear meshing accuracy can be maintained when adjusting the spacing between the two shot-shifting screw assemblies 2. Users can select gear sets of varying specifications based on their desired spacing, eliminating the need for custom parts. The removable transmission gear 9 also facilitates maintenance and replacement, extending the life of the transmission system. This technology is particularly suitable for dual-screw shot-shifting systems requiring high-precision synchronized drive.

[0046] In this embodiment, a limiting step 24 is provided on the shooting platform seat 3 corresponding to the transmission gear 9, and a through hole is provided in the middle of the transmission gear 9 that passes through the shooting platform seat 3. One side of the transmission gear 9 is limited and abuts against the limiting step 24 of the shooting platform seat 3, and a limiting member 25 is provided on the other side of the shooting platform seat 3 corresponding to the transmission gear 9; the limiting member 25 is fixed to the mounting inclined surface of the shooting platform seat 3 by screws; the transmission gear 9 is limited between the limiting step 24 and the limiting member 25; the shooting platform seat 3 is provided with limiting steps 24 distributed at four corners, and each limiting step 24 corresponds to a limiting member 25.

[0047] In this embodiment, the shooting platform 3 is provided with a square portion 26 or a circular hole portion corresponding to the through hole of the transmission gear 9. When the transmission gear 9 rotates, the transmission gear 9 rotates around the axis of the square portion 26 or the circular hole portion.

[0048] The shooting platform 3 is provided with a shooting motor 11 connected to the transmission gear 9 and a motor bracket 12 for fixing the shooting motor 11; The injection molding machine 13 is further provided on the injection molding machine 3 for driving the injection molding screw, and a fixing plate 14 for fixing the injection molding machine 13; During the process of replacing the screw gear 10 on the shooting platform 3 , the injection motor 13 and the fixing plate 14 are removed from the shooting platform 3 , and the injection motor 11 and the motor bracket 12 are removed from the shooting platform 3 ; thus, the screw gear 10 is removed from the shooting platform 3 .

[0049] The modular disassembly design of the injection motor 11 and the injection motor 13 provides ample space for replacing the lead screw gear 10. The removable motor bracket 12 and mounting plate 14 allow maintenance personnel to quickly access the transmission gear 9 and lead screw gear 10, significantly reducing maintenance time. Temporary removal of the injection motor 13 avoids spatial interference during gear replacement, while detaching the injection motor 11 facilitates adjustment of the transmission gear 9's installation position. This design significantly improves the equipment's maintainability and is particularly suitable for pilot production environments where frequent gear configuration adjustments are required.

[0050] In this embodiment, the screw gear 10 is sleeved on the outside of the shooting screw 19, and the shooting screw 19 is provided with a limiting wheel for limiting the screw gear 10 on the shooting screw 19. The end of the shooting screw 19 is provided with an anti-slip block, which is detachably mounted on the limiting wheel by bolts, and the limiting wheel is connected to the connecting seat 23. The limiting wheel and the connecting seat 23 are integrally formed by metal processing technology.

[0051] In this embodiment, the motor bracket 12 and the fixing plate 14 are both detachably fixed to the shooting platform 3 by bolts.

[0052] The shooting platform 3 is provided with a transverse extension portion 15 and a bending portion 16 connected to the transverse extension portion 15, and the fixing plate 14 is detachably mounted on the rear end of the bending portion 16; The transmission gear 9 is detachably mounted on the shooting platform 3 along the transverse extension portion 15 and the bent portion 16 .

[0053] The structural design of the transverse extension 15 and the bent portion 16 optimizes the spatial layout of the shooting platform 3 and provides a stable support platform for the installation of the transmission gear 9. The removable mounting of the fixing plate 14 at the rear end of the bent portion 16 ensures the secure fixation of the injection motor 13 while facilitating its removal for gear maintenance. The installation of the transmission gear 9 along the bent portion 16 fully utilizes the three-dimensional space of the shooting platform 3. This structural design is particularly suitable for the space optimization requirements of compact injection molding machines.

[0054] The shooting screw assembly 2 includes a shooting spring seat 17, a nut sleeve 18 and a shooting screw 19, and the first detachable connection matching structure includes a shooting connector 5 provided between the clamping head plate 1 and the shooting screw assembly 2; The said shooting shift connection piece 5 is inserted through the shooting shift spring seat 17, the nut sleeve 18 is fixed on the shooting shift spring seat 17, and the shooting shift screw rod 19 is inserted into the nut sleeve 18 and the shooting shift connection piece 5; The shooting spring seat 17 is provided with a shooting spring 22, and the shooting spring seat 17 is provided with a guide rod 20, which penetrates the shooting spring seat 17. Both ends of the guide rod 20 are provided with a connecting block 21, and the connecting block 21 is detachably mounted on the outside of the shooting platform seat 3; The shooting spring seat 17 and the nut sleeve 18 are fixed relative to the clamping head plate 1 through the shooting connection piece 5; when the shooting screw 19 rotates, the shooting platform seat 3 can be moved closer to or away from the clamping head plate 1, and the guide rod 20 can move forward and backward along the shooting spring seat 17 through the connecting blocks 21 at both ends. When the shooting platform seat 3 is movable close to the die head plate 1, one of the connecting blocks 21 acts on the shooting spring seat 17 and squeezes the shooting spring 22, so that the shooting spring 22 provides corresponding shooting pressure; The shooting screw 19 is provided with a connecting seat 23 which is detachably mounted on the shooting platform seat 3 , and a spacer 8 is provided between the connecting seat 23 and / or the connecting block 21 and the shooting platform seat 3 for adjusting the distance between the shooting screw 19 and the outer side of the shooting platform seat 3 .

[0055] In this embodiment, the connecting block 21 is fixedly connected to the corresponding pad 8 by bolts, and the connecting block 21 is detachably installed on the outside of the shooting platform seat 3 by bolts. The connecting seat 23 is fixedly connected to the corresponding pad 8 by bolts, and the connecting seat 23 is detachably installed on the outside of the shooting platform seat 3 by bolts, so that the entire shooting screw assembly 2 is detachably installed on the outside of the shooting platform seat 3.

[0056] The shifting spring 22 provides shifting pressure when the shifting motor 11 is powered off. Specifically, when the shifting motor 11 drives the shooting platform mechanism close to the mold, after the nozzle hits the mold, the shifting spring 22 is compressed to form a certain deformation, thereby generating a shifting force. After the shifting motor 11 is powered off, the shifting motor 11 is in the brake locking stage. The shifting force is provided by the compressed shifting spring 22 to prevent the nozzle from flowing out of the rubber. The shifting motor 11 does not need to work continuously to provide the shifting force, thereby achieving an energy-saving effect. The guide rod 20 limits the movement trajectory of the shooting movement through the connecting block 21, ensuring the linearity of the movement of the shooting platform seat 3. The application of the pad 8 at the connecting seat 23 or the connecting block 21 further expands the spacing adjustment range of the shifting screw 19. The matching design of the nut sleeve 18 and the shifting screw 19 takes into account both transmission accuracy and maintainability, and users can replace worn parts separately. This structure is particularly suitable for precision injection molding scenarios with high-frequency shooting movements.

[0057] In this embodiment, the shooting shift spring seat 17 includes a seat body and a front connecting plate fixed to the front end of the seat body by screws, a positioning block is provided in the seat body, the shooting shift connecting member 5 is inserted through the front connecting plate and the positioning block and abuts on the inner side of the seat body, that is, the shooting shift connecting member 5 is inserted through the shooting shift spring seat 17, and one end of the shooting shift connecting member 5 abuts on the inner side of the shooting shift spring seat 17, without passing through the shooting shift spring seat 17; shooting shift springs 22 are provided above and below the shooting shift connecting member 5, and the shooting shift spring 22 is arranged between the positioning block and the front connecting plate, and a connecting shaft for inserting the shooting shift spring 22 is provided between the positioning block and the front connecting plate, the connecting shaft is inserted through the positioning block and the front connecting plate, and the end of the connecting shaft extends outward from the outer side of the front connecting plate.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shooting platform mechanism for an injection molding machine, comprising a shooting platform base (3) and a shooting screw assembly (2), wherein the shooting platform base (3) can be moved toward or away from a clamping head plate (1) via the shooting screw assembly (2), and characterized in that: The left and right outer sides of the shooting platform (3) are both provided with shooting screw assemblies (2), and each shooting screw assembly (2) is detachably mounted between the outer sides of the clamping head plate (1) and the shooting platform (3), and the clamping head plate (1) is detachably mounted on the injection molding machine. Through the first detachable connection and matching structure between the clamping head plate (1) and the shooting screw assembly (2), and the second detachable connection and matching structure between the shooting screw assembly (2) and the shooting platform (3), it is possible to replace the clamping head plates (1) of different sizes on the injection molding machine.

2. The shooting platform mechanism for an injection molding machine according to claim 1, characterized in that: The front end of the shooting screw assembly (2) is detachably connected to the clamping head plate (1), and the rear end of the shooting screw assembly (2) is detachably connected to the outer side of the shooting platform seat (3). The rear end of the shooting screw assembly (2) is arranged close to the rear of the shooting platform seat (3) so that the front end of the shooting screw assembly (2) has sufficient space to adapt to the installation of clamping head plates (1) of different thicknesses.

3. The shooting platform mechanism for an injection molding machine according to claim 1, characterized in that: The first detachable connection matching structure comprises a connecting rod (4) arranged on the clamping head plate (1), and a shooting connecting piece (5) matched with the shooting screw assembly (2); a movable locking rod (6) is provided between the connecting rod (4) and the shooting connecting piece (5); the connecting rod (4) and the shooting connecting piece (5) are respectively plugged into the movable locking rod (6); and the movable locking rod (6) is telescopically arranged between the connecting rod (4) and the shooting connecting piece (5); the movable locking rod (6) realizes the connection or separation of the connecting rod (4) and the shooting connecting piece (5) through axial telescopic movement.

4. The shooting platform mechanism for an injection molding machine according to claim 3, characterized in that: A plug pin (7) is provided between the injection-shifting connecting piece (5) and the movable locking rod (6); when the clamping head plate (1) and the injection-shifting screw assembly (2) are assembled, the plug pin (7) penetrates the injection-shifting connecting piece (5) and the movable locking rod (6) to lock the movable locking rod (6) on the injection-shifting connecting piece (5); When the clamping head plate (1) and the shot-shift screw assembly (2) are disassembled, the plug pin (7) is disengaged from the shot-shift connector (5) and the movable locking rod (6), and the movable locking rod (6) is axially retracted into the shot-shift connector (5) and is disengaged from the connecting rod (4); The connecting rod (4) is detachably mounted on the clamping head plate (1).

5. The shooting platform mechanism for an injection molding machine according to claim 4, characterized in that: The insertion and locking direction of the plug pin (7) and the axial telescopic movement direction of the movable locking rod (6) are perpendicular to each other and form a vertical and horizontal intersecting locking structure; The plug pin (7) is inserted into or disengaged from the movable locking rod (6) to achieve locking or unlocking between the movable locking rod (6) and the injection-transfer connecting piece (5).

6. The shooting platform mechanism for an injection molding machine according to claim 1, characterized in that: A pad (8) is provided at the connection between the shooting screw assembly (2) and the shooting platform seat (3). The pad (8) is detachably installed at the connection between the shooting screw assembly (2) and the shooting platform seat (3). By installing pads (8) of different thicknesses or removing the pads (8), the distance between the shooting screw assemblies (2) on the left and right sides of the shooting platform seat (3) can be adjusted.

7. The shooting platform mechanism for an injection molding machine according to claim 6, characterized in that: The shooting platform seat (3) is provided with a transmission gear (9) at the rear end of the shooting screw assembly (2) corresponding to the shooting platform seat (3). The transmission gear (9) is detachably mounted on the shooting platform seat (3) and the transmission gear (9) is rotatably arranged on the shooting platform seat (3). The rear end of each shooting screw assembly (2) is provided with a screw gear (10) meshing with the transmission gear (9). When adjusting the spacing between the shooting screw assembly (2) on the left and right sides of the shooting platform (3), the transmission gear (9) with a different pitch circle diameter is replaced on the adjustment shooting platform (3), or the screw gear (10) with a different pitch circle diameter is replaced on the rear end of the shooting screw assembly (2), and the replaced transmission gear (9) and the screw gear (10) maintain meshing transmission.

8. The shooting platform mechanism for an injection molding machine according to claim 7, characterized in that: The shooting platform (3) is provided with a shooting motor (11) connected to the transmission gear (9) and a motor bracket (12) for fixing the shooting motor (11); The injection molding base (3) is further provided with an injection molding motor (13) for driving the injection molding screw, and a fixing plate (14) for mounting and fixing the injection molding motor (13); During the process of replacing the screw gear (10) on the shooting platform (3), the injection motor (13) and the fixing plate (14) are removed from the shooting platform (3), and the injection motor (11) and the motor bracket (12) are removed from the shooting platform (3); thereby removing the screw gear (10) from the shooting platform (3).

9. The shooting platform mechanism for an injection molding machine according to claim 8, characterized in that: The shooting platform seat (3) is provided with a transverse extension portion (15) and a bending portion (16) connected to the transverse extension portion (15), and the fixing plate (14) is detachably mounted on the rear end of the bending portion (16); The transmission gear (9) is detachably mounted on the shooting platform seat (3) along the transverse extension portion (15) and the bending portion (16).

10. The shooting platform mechanism for an injection molding machine according to claim 1, characterized in that: The shooting screw assembly (2) includes a shooting spring seat (17), a nut sleeve (18) and a shooting screw (19), and the first detachable connection matching structure includes a shooting connector (5) provided between the clamping head plate (1) and the shooting screw assembly (2); The said shooting shift connection piece (5) is inserted through the shooting shift spring seat (17), the nut sleeve (18) is fixed on the shooting shift spring seat (17), and the shooting shift screw rod (19) is inserted into the nut sleeve (18) and the shooting shift connection piece (5); The shooting spring seat (17) is provided with a shooting spring (22), and the shooting spring seat (17) is provided with a guide rod (20), the guide rod (20) is inserted into the shooting spring seat (17), and both ends of the guide rod (20) are provided with a connecting block (21), and the connecting block (21) is detachably mounted on the outside of the shooting platform seat (3); The shooting spring seat (17) and the nut sleeve (18) are fixed relative to the clamping head plate (1) through the shooting connection piece (5); when the shooting screw (19) rotates, the shooting platform seat (3) can be moved closer to or away from the clamping head plate (1), and the guide rod (20) can move forward and backward along the shooting spring seat (17) through the connecting blocks (21) at both ends. When the shooting platform seat (3) is movably close to the die head plate (1), one of the connecting blocks (21) acts on the shooting spring seat (17) and squeezes the shooting spring (22), so that the shooting spring (22) provides corresponding shooting pressure; The shooting screw (19) is provided with a connecting seat (23) which is detachably mounted on the shooting platform seat (3), and a spacer (8) is provided between the connecting seat (23) and / or the connecting block (21) and the shooting platform seat (3) for adjusting the distance between the shooting screw (19) and the outer side of the shooting platform seat (3).

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