A dual injection structure with automatic translation switching

Abstract

The utility model relates to the field of injection molding machine discloses a kind of double-injection structure of automatic translation switching, including fixed mould plate and bearing platform, two injection platforms are arranged in parallel on bearing platform, and two injection platforms are each guided and slippage on bearing platform along injection direction, bearing platform is guided and slippage on body along perpendicular to injection platform injection direction, the movement of injection platform is controlled to whole shift oil cylinder, the movement of bearing platform is controlled to translation oil cylinder, positioning module for realizing accurate positioning when injection platform switching is arranged between body, bearing platform, fixed mould plate and injection platform, positioning module includes translation limiting block being arranged on the both sides of bearing platform on body, on-off structure being connectable or disconnectable between the piston rod end of whole shift oil cylinder and fixed mould plate and whole shift limiting block being arranged on bearing platform and limiting the maximum stroke of injection platform retreat, the double-injection structure can be automatically and accurately switched in subsequent after completing initial debugging, time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machines, and in particular to a dual injection structure with automatic translation and switching. Background Technology

[0002] Dual-injection molding machines can switch between different injection stations to accommodate plastic products of different sizes or materials and their corresponding molds, which has made them increasingly popular with customers.

[0003] Chinese Patent No. CN215320209U discloses a rapid shifting device for the main and auxiliary injection stages of a two-color injection molding machine. The device includes a machine body and a fixed template, as well as a main injection stage and an auxiliary injection stage located on the injection stage support plate. The fixed template is fixedly installed on the machine body, and the injection stage support plate slides along the machine body. The injection stage support plate achieves the translational switching between the injection stage and the auxiliary injection stage through a left and right adjustment mechanism. However, the left and right adjustment mechanism of the injection stage adopts a structure combining an adjustment screw, an adjustment nut, and a handwheel. During translation, multiple people are required to assist in the operation, and it takes a long time to center the machine before it can continue working, which is very time-consuming. Utility Model Content

[0004] This invention addresses the drawback of existing dual-injection stages, which require multiple people to manually adjust the centering point each time they switch, resulting in time-consuming and labor-intensive processes. It provides a dual-injection structure that automatically shifts and switches the center point only once.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] An automatic translational switching dual-injection structure includes a fixed template fixed to the machine body and a carrier platform movable on the machine body. Two injection stations are arranged in parallel on the carrier platform. Each injection station slides along the injection direction on the carrier platform. The carrier platform slides along the machine body perpendicular to the injection direction of the injection station. The movement of the injection station is controlled by a tracing cylinder, and the movement of the carrier platform is controlled by a translation cylinder. A positioning module is provided between the machine body, the carrier platform, the fixed template, and the injection stations to achieve precise positioning when switching injection stations. The positioning module includes translational limiting blocks provided on both sides of the carrier platform on the machine body, an on / off structure that can connect or disconnect the piston rod end of the tracing cylinder and the fixed template, and a tracing limiting block provided on the carrier platform to limit the maximum backward stroke of the injection station.

[0007] By adopting the above scheme, a positioning module is added. The translation limit block is used to determine the translation stroke required for switching between the two firing platforms and the positioning point after translation. The translation cylinder with the corresponding extension stroke can be selected according to the translation stroke. The total movement limit block and the on / off structure are used to determine the stroke required for the firing platform to move forward and backward and the positioning point for the firing platform to move backward. The total movement cylinder with the corresponding extension stroke can be selected according to the stroke of the firing platform to move forward and backward. Only the initial stage needs to be debugged. The subsequent firing platforms can automatically complete the precise switching without repeated manual debugging, which significantly improves the efficiency of firing platform switching.

[0008] Preferably, the switching structure includes a pin fixedly installed at the piston rod end of the adjusting cylinder and having a pin hole at the insertion end, a positioning block fixedly installed on the fixed template and having a pin hole, and a first automatic telescopic component fixed on the positioning block. The forward or backward movement of the pin is controlled by the adjusting cylinder. When the pin is inserted into the pin hole, the extension and retraction of the first automatic telescopic component achieves insertion or disengagement from the pin hole.

[0009] By adopting the above scheme, the locking or unlocking of the injection station and the fixed template can be achieved by using the insertion or disengagement of the first automatic telescopic component and the pin. This not only enables the disconnection of the injection station and the fixed template, but also serves to position the injection station and the fixed template.

[0010] Preferably, the support platform is equipped with a limiting mechanism that limits the movement when the launcher retracts to its maximum stroke.

[0011] Preferably, the limiting mechanism includes a second automatic telescopic member fixed to the firing platform and capable of vertical telescopic movement, and an insert fixed to the bearing platform that allows the second automatic telescopic member to be inserted and limited when the firing platform retracts to abut against the moving limiting block.

[0012] Using the above scheme, before switching between firing stations, the current firing station needs to be moved back to its maximum stroke and limited to avoid accidental movement of the firing station during subsequent idle periods, which could cause travel deviations during subsequent switching.

[0013] Preferably, a guide support is provided on the bearing platform for guiding and supporting the pin.

[0014] Using the above scheme, the pin is connected to the piston rod of the moving cylinder and has a certain length. The pin needs to be precisely aligned with the insertion hole on the positioning block. This requires the pin to remain horizontal when moving forward and backward. Therefore, it is necessary to set a guide support.

[0015] Preferably, the pin has vertical grooves on both sides, and a guide block is fixed on the guide support. The guide block has a guide groove for the pin with grooves to be guided through.

[0016] By adopting the above solution, the slot can prevent the pin from deflecting, and ensure that when the pin advances to its maximum stroke, the pin hole is aligned with the second automatic telescopic component, so that the second automatic telescopic component can be inserted into the pin hole when it extends.

[0017] Preferably, the upper end of the guide support is fixed with a support wheel for supporting the gun barrel of the firing platform.

[0018] Using the above scheme, the barrel has a relatively long length, and the support wheels can be installed to enable the barrel to move and be supported.

[0019] This utility model, by adopting the above technical solutions, has significant technical effects: It adds a positioning module, uses translation limit blocks to determine the translation stroke required for switching between two firing platforms and the positioning point after translation, and selects translation cylinders with corresponding extension strokes based on the translation stroke. It uses whole-shift limit blocks and on / off structures to determine the stroke required for the firing platform to move forward and backward and the positioning point for the platform to move backward. It selects whole-shift cylinders with corresponding extension strokes based on the forward and backward movement of the firing platform. Only initial adjustments are needed; subsequently, the firing platforms can automatically and accurately switch without repeated manual adjustments, significantly improving the efficiency of firing platform switching. Attached Figure Description

[0020] Figure 1 This is a top view of an automatically shifting dual-injection structure according to this embodiment;

[0021] Figure 2 This is an isometric view of a dual-injection structure with automatic translation switching according to this embodiment;

[0022] Figure 3 This is a bottom view of a dual-injection structure with automatic translation switching in this embodiment;

[0023] Figure 4 This is an isometric view of an automatically translating and switching dual-injection structure without a fixed template, as described in this embodiment.

[0024] Figure 5 This is an isometric view of the template in this embodiment.

[0025] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Fixed template; 2. Supporting platform; 3. Shooting station; 301. Machine barrel; 4. Positioning block; 401. Insertion hole; 402. Limiting hole; 5. Locking cylinder; 6. Translation limit block; 7. Adjustment limit block; 8. Guide support; 9. Support wheel; 10. Pin; 1001. Pin hole; 1002. Groove; 11. Guide block; 12. Adjustment cylinder; 13. Limiting cylinder; 14. Insertion block; 15. Translation cylinder. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] A dual-injection structure with automatic translation switching, as shown in the reference. Figures 1-5 As shown, it includes a fixed template 1 fixed on the machine body (not shown) and a carrier platform 2 that moves on the machine body. Two injection stations 3 are arranged parallel to each other on the carrier platform 2. The carrier platform 2 is guided and slids on the machine body in a manner that cooperates with a linear guide and a slider in a manner that is perpendicular to the injection direction of the injection station 3. Each of the two injection stations 3 is guided and slids on the carrier platform 2 in a manner that cooperates with a linear guide and a slider in a manner that is perpendicular to the injection direction of the injection station 3. The above is the prior art.

[0028] Each injection station 3 is connected to a traverse cylinder 12 at one end near the fixed template 1. The forward or backward movement of the injection station 3 is controlled by the traverse cylinder 12. A translation cylinder 15 is provided between the machine body and the support platform 2. The movement of the support platform 2 along the direction perpendicular to the injection direction of the injection station 3 is controlled by the translation cylinder 15.

[0029] A positioning module is provided between the fuselage, the support platform 2, the fixed template 1 and the firing platform 3 to achieve precise positioning when switching between the two firing platforms 3. The positioning module includes translation limit blocks 6 fixedly installed on both sides of the support platform 2 on the fuselage, a switching structure that can connect or disconnect the piston rod end of the transfer cylinder 12 and the fixed template 1, and a transfer limit block 7 fixedly installed on the support platform 2 to limit the maximum stroke of the firing platform 3 backward.

[0030] Combination Figures 4-5 As shown, the switching structure includes a pin 10 fixedly installed at the end of the piston rod of the adjusting cylinder 12 and having a pin hole 1001 at the insertion end, a positioning block 4 fixedly installed on the fixed template 1 and having an insertion hole 401, and a first automatic telescopic component fixed on the positioning block 4. The first automatic telescopic component is a locking cylinder 5. The cylinder body of the locking cylinder 5 is fixed on the outer wall of the positioning block 4. The outer wall of the positioning block 4 is provided with a through hole communicating with the insertion hole 401. A limiting hole 402 is provided on the inner wall of the insertion hole 401 opposite to the through hole, allowing the piston rod of the locking cylinder 5 to be partially inserted.

[0031] The forward or backward movement of the pin 10 is controlled by the moving cylinder 12. When the pin 10 is inserted into the insertion hole 401, the piston rod of the locking cylinder 5 extends and passes through the pin hole 1001 and then engages with the limiting hole 402.

[0032] A limiting mechanism is provided on the support platform 2 to limit the position when the firing platform 3 retracts to its maximum stroke. The limiting mechanism includes a second automatic telescopic component fixed on the firing platform 3 and capable of vertical telescopic movement. The second automatic telescopic component is a limiting cylinder 13. The cylinder body of the limiting cylinder 13 is fixed on the outer wall of the firing platform 3. A plug block 14 with a plug hole is fixed on the support platform 2. When the firing platform 3 retracts to abut against the moving limiting block 7, the piston rod of the limiting cylinder 13 extends and engages with the plug hole.

[0033] Two guide supports 8 are provided on the bearing platform 2 for guiding and supporting the pin 10. A guide block 11 is fixed on the guide support 8. Vertical grooves 1002 are provided on both sides of the pin 10. The guide block 11 is provided with a guide groove for the part of the pin 10 with the grooves 1002 to be guided and inserted. The guide groove can prevent the pin 10 from deflecting and ensure that the piston rod of the locking cylinder 5 and the pin hole 1001 can be aligned. A support wheel 9 for supporting the barrel 301 of the shooting platform 3 is also fixed at the upper end of the guide support 8.

[0034] Position sensors for detecting the translational position of the bearing platform 2 are installed on both sides of the bearing platform 2. Position sensors for detecting the front and rear positions of the shooting table 3 are also installed on the upper surface of the bearing platform 2 and the insertion end of the pin 10. All these sensors are connected to the controller.

[0035] Taking the current left injection stage connection state as an example, the logic for switching between the two injection structures is as follows:

[0036] 1. Disconnection between the left shooting platform and the fixed template 1: First, the piston rod of the adjusting cylinder 12 of the left shooting platform extends, and the left shooting platform retracts to the maximum preset stroke; then, the limiting cylinder 13 of the left shooting platform extends, and the left shooting platform locks with the bearing platform 2; then, the locking cylinder 5 retracts; finally, the adjusting cylinder 12 of the left shooting platform retracts, and the pin 10 of the left shooting platform disengages from the positioning block 4.

[0037] 2. Switch the right shooting platform: The translation cylinder 15 switches, and the right shooting platform moves with the bearing platform 2 until the pin 10 at its end is aligned with the insertion hole 401 of the positioning block 4;

[0038] 3. Connection between the right injection station and the fixed template 1: The adjustment cylinder 12 of the right injection station extends, and the pin 10 of the right injection station is inserted into the insertion hole 401 to the preset depth; then, the locking cylinder 5 extends, and the piston rod of the locking cylinder 5 passes through the through hole and the pin hole 1001 in sequence and is engaged with the limiting hole 402; further, the limiting cylinder 13 of the right injection station retracts; finally, as the adjustment cylinder 12 retracts, the right injection station approaches the fixed template 1 until the nozzle of the injection station 3 is inserted into the cavity of the mold.

[0039] The design of this solution is to add a positioning module. The translation limit block 6 is used to determine the translation stroke required for switching between the two shooting platforms 3 and the positioning point after translation. The translation cylinder 15 with the corresponding extension stroke can be selected according to the translation stroke. The total movement limit block 7 and the on / off structure are used to determine the stroke required for the shooting platform 3 to move forward and backward and the positioning point of the shooting platform 3 when it moves backward. The total movement cylinder 12 with the corresponding extension stroke can be selected according to the stroke of the shooting platform 3 when it moves forward and backward. Only the initial stage needs to be debugged. Subsequently, the shooting platform 3 can automatically complete the precise switching under the logic programming of the controller without repeated manual debugging, which significantly improves the efficiency of the switching of the shooting platform 3.

[0040] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An automatic translational switching dual-injection structure, comprising a fixed template (1) fixed to the machine body and a carrier platform (2) movable on the machine body, wherein two injection stations (3) are arranged in parallel on the carrier platform (2), each of the two injection stations (3) is guided and slidably moved on the carrier platform (2) along the injection direction, and the carrier platform (2) is guided and slidably moved on the machine body along the injection direction perpendicular to the injection station (3), and the movement of the injection station (3) is controlled by a transfer cylinder (12), characterized in that: The movement of the support platform (2) is controlled by the translation cylinder (15). A positioning module is provided between the machine body, the support platform (2), the fixed template (1) and the firing platform (3) to achieve precise positioning when the firing platform (3) is switched. The positioning module includes translation limit blocks (6) provided on both sides of the support platform (2) on the machine body, a connection and disconnection structure provided between the piston rod end of the translation cylinder (12) and the fixed template (1) to connect or disconnect the two, and a translation limit block (7) provided on the support platform (2) to limit the maximum stroke of the firing platform (3) backward.

2. The dual-injection structure with automatic translation switching according to claim 1, characterized in that: The switching structure includes a pin (10) fixedly installed at the piston rod end of the moving cylinder (12) and having a pin hole (1001) at the insertion end, a positioning block (4) fixedly installed on the fixed template (1) and having a insertion hole (401), and a first automatic telescopic member fixed on the positioning block (4). The forward or backward movement of the pin (10) is controlled by the moving cylinder (12). When the pin (10) is inserted into the insertion hole (401), the extension and retraction of the first automatic telescopic member is inserted into or disengaged from the pin hole (1001).

3. The dual-injection structure with automatic translation switching according to claim 1, characterized in that: A limiting mechanism is provided on the carrying platform (2) to limit the movement when the firing platform (3) retracts to its maximum stroke.

4. The dual-injection structure with automatic translation switching according to claim 3, characterized in that: The limiting mechanism includes a second automatic telescopic component fixed on the firing platform (3) and capable of vertical telescopic movement, and an insert (14) fixed on the bearing platform (2) that allows the second automatic telescopic component to be inserted and limited when the firing platform (3) retracts to abut against the moving limiting block (7).

5. The dual-injection structure with automatic translation switching according to claim 2, characterized in that: A guide support (8) is provided on the bearing platform (2) for guiding and supporting the pin (10).

6. The dual-injection structure with automatic translation switching according to claim 5, characterized in that: Vertical grooves (1002) are provided on both sides of the pin (10), and a guide block (11) is fixed on the guide support (8). The guide block (11) is provided with a guide groove for the pin (10) with the grooves (1002) to be guided through.

7. The dual-injection structure with automatic translation switching according to claim 6, characterized in that: The upper end of the guide support (8) is fixed with a support wheel (9) for supporting the barrel (301) of the firing platform (3).

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