Sliding adjustment mechanism and multi-material injection molding machine

Abstract

The utility model belongs to injection molding equipment technical field discloses a kind of sliding adjustment mechanism and multi-material injection molding machine.Sliding adjustment mechanism includes transition piece, sliding component, connecting piece and push piece.Transition piece is set on fixed mould plate.Sliding component is set on transition piece, and sliding component includes the sliding base capable of moving along first direction.Connecting piece is connected with injection unit, and injection unit is configured to seat along second direction, and first direction and second direction are perpendicular.Push piece is set on connecting piece, and push piece includes the push part capable of moving along second direction, and push piece is connected with sliding base.The utility model directly bears the reaction force generated by push piece to injection glue and transmits force to transition piece by the connection with sliding base, so that stress is dispersed to transition piece, reduce the risk of damage due to excessive local stress of component, significantly improve the stability of equipment when bearing injection glue load.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a sliding adjustment mechanism and a multi-material injection molding machine. Background Technology

[0002] Multi-material injection molding machines are key equipment for meeting the molding needs of complex products. Because they need to adapt to molds of different sizes, the nozzle center distance often needs to be adjusted to achieve precise injection of multiple materials. Currently, the multi-material market demand is diversified, placing higher demands on the translational design of multi-material injection molding machines. These machines not only need to have higher load capacity and structural rigidity, but also need to effectively reduce costs while meeting diverse customer needs to enhance market competitiveness.

[0003] Currently, the translational injection unit structure of multi-material injection molding machines mostly uses linear guide pairs as the core guiding component. Its working principle is mainly to achieve the translational movement of the injection unit through the linear guide pairs, thereby adjusting the nozzle center distance to adapt to the size requirements of different molds. However, existing standard linear guide pairs, due to their structural limitations, are prone to stress concentration under load, leading to component breakage and affecting equipment stability.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a sliding adjustment mechanism and a multi-material injection molding machine to reduce the risk of damage to components due to excessive local stress and significantly improve the stability of the equipment when subjected to injection load.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A sliding adjustment mechanism is disposed between a fixed template and an injection unit and configured to adjust the position of the injection unit in a first direction;

[0008] The sliding adjustment mechanism includes a transition member, a sliding assembly, a connecting member, and a pushing member, wherein:

[0009] The transition piece is disposed on the fixed template;

[0010] The sliding assembly is disposed on the transition member, and the sliding assembly includes a slide block capable of moving along the first direction;

[0011] The connector is connected to the injection unit, which is configured to be seated along a second direction, the first direction and the second direction being perpendicular;

[0012] The pusher is disposed on the connector, and the pusher includes a pusher portion that can move in a second direction. The pusher is connected to the slide.

[0013] Preferably, the sliding assembly further includes a slide rail disposed on the transition member along the first direction, and the slide block slides in cooperation with the slide rail.

[0014] Preferably, one of the slide rails is provided with a T-groove, and the other has a T-shaped cross-section and can slide with the T-groove.

[0015] Preferably, the slide includes a base, a first mating part, a second mating part, and a bolt, wherein:

[0016] The first mating part and the second mating part are respectively disposed on opposite sides of the base part, and together with the base part, they form the T-shaped groove;

[0017] Both the first and second mating parts are connected to the base part by the bolts, and the mating clearance between the slide rail and the T-slot is adjusted by adjusting the tightness of the bolts.

[0018] Preferably, the pushing member is a hydraulic cylinder, and the piston rod of the hydraulic cylinder constitutes the pushing part. The piston rod extends and retracts in the second direction to withstand the reaction force during injection.

[0019] Preferably, a connecting component is provided between the pushing part and the slide, and the connecting component is configured to make the pushing part and the slide detachably connected.

[0020] Preferably, the adapter assembly includes a fixing pin, and the push part and the slide are respectively provided with corresponding through connecting holes, with the fixing pin passing through the connecting holes.

[0021] Preferably, a bearing is provided in the connecting hole of the push part, and the fixing pin passes through the bearing.

[0022] Preferably, a quick-release assembly is provided between the connector and the injection unit, and the quick-release assembly is configured to make the connector and the injection unit detachably connected.

[0023] A multi-material injection molding machine includes a fixed template, an injection unit, and the aforementioned sliding adjustment mechanism. The sliding adjustment mechanism is disposed between the fixed template and the injection unit and is configured to adjust the position of the injection unit in a first direction.

[0024] The beneficial effects of this utility model are:

[0025] This invention allows the pusher to directly bear the reaction force generated by the injection and transmit the force to the transition piece through its connection with the slide, thus dispersing the stress to the transition piece, reducing the risk of damage to components due to excessive local stress, and significantly improving the stability of the equipment when subjected to injection load. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the sliding adjustment mechanism provided by this utility model;

[0027] Figure 2 This is a structural schematic diagram of the sliding component and the adapter component provided by this utility model;

[0028] Figure 3 This is a schematic diagram of the slide provided by this utility model.

[0029] In the picture:

[0030] 1. Transition component; 2. Sliding assembly; 21. Slide block; 211. T-slot; 212. Base part; 213. First mating part; 214. Second mating part; 22. Slide rail; 3. Connecting component; 4. Pushing component; 5. Adapter assembly; 51. Fixing pin; 52. Bearing. Detailed Implementation

[0031] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0032] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0033] In this application, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of only one centrifugal vortex magnetic pump, the simultaneous existence of one centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump, or the existence of only one centrifugal vortex magnetic pump. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0034] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0035] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0036] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0037] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0038] Please see Figures 1 to 3This embodiment provides a sliding adjustment mechanism, which is disposed between a fixed template and an injection unit and configured to adjust the position of the injection unit in a first direction. The sliding adjustment mechanism includes a transition member 1, a sliding assembly 2, a connecting member 3, and a pushing member 4. The transition member 1 is disposed on the fixed template. The sliding assembly 2 is disposed on the transition member 1 and includes a slide seat 21 capable of moving along the first direction. The connecting member 3 is connected to the injection unit, which is configured to seat along a second direction, the first and second directions being perpendicular. The pushing member 4 is disposed on the connecting member 3 and includes a pushing portion capable of moving along the second direction; the pushing member 4 is connected to the slide seat 21.

[0039] In this configuration, the sliding adjustment mechanism is positioned between the fixed template and the injection unit, forming a fixed connection with the fixed template via the transition piece 1, providing a stable installation foundation for the overall structure. The sliding component 2 is mounted on the transition piece 1, providing sliding guidance conditions for the position adjustment of the injection unit along the first direction, enabling the injection unit to move smoothly along the first direction under the action of external driving force. The connecting piece 3 and the pushing piece 4 connect the injection unit to the slide block 21, ensuring that the injection unit's position is adjusted synchronously with the sliding of the slide block 21. The pushing piece 4 is mounted on the connecting piece 3, and its pushing part moves along the second direction (injection direction) and is connected to the slide block 21. Its core function is to directly bear and overcome the reaction force generated during the injection process when the injection unit injects along the second direction, preventing this force from interfering with the stability of the sliding component 2. Ultimately, through the sliding conditions provided by the sliding component 2 and the force bearing capacity of the pushing piece 4, the position adjustment of the injection unit is achieved to adapt to molds of different sizes.

[0040] Understandably, the pusher 4 can directly bear the reaction force generated by the injection and transmit the force to the transition member 1 through the connection with the slide 21, so that the stress is dispersed to the transition member 1, reducing the risk of damage to the component due to excessive local stress and significantly improving the stability of the equipment when subjected to injection load.

[0041] It should be noted that the position adjustment of the injection unit in the first direction also needs to be achieved through an external drive structure. Specifically, a drive structure such as a servo screw, gear rack, or hydraulic cylinder can be used. The drive structure is connected to the slide 21 or the connector 3. By outputting the driving force along the first direction, the slide 21 (or the injection unit through the connector 3) is driven to move along the guide direction of the sliding component 2, thereby precisely adjusting the position of the injection unit.

[0042] Specifically, the sliding assembly 2 also includes a slide rail 22 disposed on the transition member 1 along the first direction, and the slide seat 21 slides in cooperation with the slide rail 22. The fixed setting of the slide rail 22 along the first direction provides a clear and unique guide path for the movement of the slide seat 21, which can constrain the slide seat 21 to move only along the first direction, avoid the slide seat 21 from shaking or deviating during the adjustment process, thereby ensuring the straightness and accuracy of the injection unit connected to the slide seat 21 during position adjustment, and ensuring that the adjustment accuracy of the nozzle center distance meets the requirements of multi-material injection molding.

[0043] One of the slide rail 22 and the slide block 21 is provided with a T-slot 211, and the other has a T-shaped cross-section that can slide with the T-slot 211. Thus, the lateral protrusion of the T-shaped slide rail 22 and the corresponding groove of the T-slot 211 complement each other and form a mechanical constraint in a plane perpendicular to the first direction. This effectively prevents the slide rail 22 from separating from the slide block 21 during sliding due to load fluctuations (such as the self-weight of the injection unit, the lateral component of the injection reaction force, etc.), and significantly improves the structural stability of the sliding fit.

[0044] Furthermore, the T-shaped fit creates multi-faceted contact, ensuring that the slide 21 moves linearly only along the first direction of the slide rail 22. This further reduces wobbling or swaying during adjustment, thus guaranteeing the straightness and accuracy of the injection unit connected to the slide 21 during position adjustment, providing a foundation for precise matching of the nozzle center distance. More importantly, the multi-faceted contact of the T-shaped structure increases the contact area between the slide rail 22 and the slide 21, distributing the load transmitted by the slide 21 and the injection unit more evenly across the slide rail 22 and the transition piece 1. This avoids component wear or deformation caused by excessive local contact stress, extending the service life of the sliding assembly 2.

[0045] In this embodiment, the slide block 21 includes a base portion 212, a first mating portion 213, a second mating portion 214, and bolts (not shown in the figure). The first mating portion 213 and the second mating portion 214 are respectively disposed on opposite sides of the base portion 212, and together with the base portion 212, they form a T-slot 211. Both the first mating portion 213 and the second mating portion 214 are connected to the base portion 212 by bolts, and the mating clearance between the slide rail 22 and the T-slot 211 is adjusted by adjusting the tightness of the bolts.

[0046] With this configuration, the first mating part 213 and the second mating part 214 are connected to the base part 212 by bolts, so that the mating gap between the slide rail 22 and the T-slot 211 can be precisely controlled by adjusting the tightness of the bolts. This can accommodate dimensional errors that may occur during assembly or gap changes caused by wear after long-term use, ensuring that the slide rail 22 and the T-slot 211 always maintain the optimal mating state, avoiding slippage and shaking caused by excessive gap or jamming caused by insufficient gap, thereby ensuring the stability and accuracy of the injection unit position adjustment.

[0047] To ensure smooth adjustment of the injection unit position, the pusher 4 is a hydraulic cylinder. The piston rod of the hydraulic cylinder constitutes the pusher, and the piston rod extends and retracts in the second direction to withstand the reaction force during injection. It is understood that the hydraulic cylinder, relying on hydraulic transmission, can provide stable and large thrust, effectively overcoming the load such as the weight of the injection unit itself, ensuring a smooth and reliable driving process in the second direction, and avoiding movement jamming or stagnation due to insufficient driving force, thus ensuring smooth adjustment of the injection unit position.

[0048] It should be noted that the hydraulic cylinder is existing technology, and the specific model can be selected according to the actual application scenario. This embodiment does not impose specific requirements or limitations on it. In other embodiments, the pusher 4 can also adopt existing structures such as pneumatic actuators and magnetostrictive actuators, so they will not be described in detail.

[0049] To improve the assembly efficiency of the sliding adjustment mechanism, a transition component 5 is provided between the pushing part and the slide 21. The transition component 5 is configured to enable a detachable connection between the pushing part and the slide 21. By enabling a detachable connection between the pushing part and the slide 21 through the transition component 5, the assembly and disassembly of the components can be completed directly by disassembling the transition component 5, simplifying the assembly process and improving efficiency.

[0050] Specifically, the adapter component 5 includes a fixing pin 51, and corresponding through-holes are provided on the pushing part and the slide 21, with the fixing pin 51 passing through the through-holes. The fixing pin 51 cooperates with the corresponding through-holes, eliminating the need for complex connecting parts or operating procedures, and can quickly connect the pushing part and the slide 21, simplifying the assembly steps and improving the connection efficiency.

[0051] In multi-material injection molding, the injection unit needs to frequently switch injection positions, and the pusher needs to extend and retract at high frequency accordingly. Correspondingly, a bearing 52 is installed in the connecting hole of the pusher, and a fixing pin 51 passes through the bearing 52. The bearing 52 converts the sliding friction between the fixing pin 51 and the connecting hole of the pusher into rolling friction, significantly reducing the coefficient of friction and reducing wear during relative movement. This avoids excessive wear of components caused by long-term high-frequency movement, extends the service life of key components such as the pusher and fixing pin 51, and meets the requirements of continuous production in injection molding machines.

[0052] Furthermore, the presence of bearing 52 allows for smoother movement of the pusher portion along the second direction, reducing the interference of resistance fluctuations on motion accuracy and ensuring precise alignment between the nozzle and the mold gate, meeting the stringent positional accuracy requirements of multi-material layered injection molding. More importantly, the impact force generated during injection may cause a slight angular displacement of the pusher portion. Bearing 52 allows for a slight relative rotation between the pusher portion and the fixing pin 51, buffering the stress caused by this posture deviation, protecting the integrity of the connection structure, improving the reliability of the overall structure under high-load impact, and adapting to the complex working conditions of varying injection pressures of different materials in multi-material injection molding.

[0053] In multi-material injection molding machine applications, the injection unit needs to be frequently disassembled or replaced according to production requirements (such as changing material types, adapting to different molds, maintenance, etc.). To address this, a quick-release assembly (not shown in the figure) is provided between the connector 3 and the injection unit. This quick-release assembly is configured to allow for a detachable connection between the connector 3 and the injection unit. The quick-release assembly enables rapid separation and assembly of the connector 3 and the injection unit without complex tools or cumbersome operations, significantly reducing changeover time.

[0054] It should be noted that the quick-release assembly can adopt various existing structures to achieve quick and detachable connection between the connector 3 and the injection unit. For example, bolts can be used to screw the two together, or a snap-fit ​​structure can be used, consisting of elastic claws on the connector 3 and slots on the injection unit. These will not be described in detail.

[0055] This embodiment also provides a multi-material injection molding machine, which includes a fixed platen, an injection unit, and the aforementioned sliding adjustment mechanism. The sliding adjustment mechanism is disposed between the fixed platen and the injection unit, and is configured to adjust the position of the injection unit in a first direction. It is understood that the multi-material injection molding machine including the aforementioned sliding adjustment mechanism has high structural strength and a long service life.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sliding adjustment mechanism, characterized in that, The sliding adjustment mechanism is disposed between the fixed template and the injection unit, and is configured to adjust the position of the injection unit in the first direction; The sliding adjustment mechanism includes a transition member (1), a sliding assembly (2), a connecting member (3), and a pushing member (4), wherein: The transition piece (1) is disposed on the fixed template; The sliding assembly (2) is disposed on the transition member (1), and the sliding assembly (2) includes a slide (21) capable of moving along the first direction; The connector (3) is connected to the injection unit, which is configured to be seated along a second direction, the first direction and the second direction being perpendicular to each other; The pusher (4) is disposed on the connector (3), the pusher (4) includes a pusher portion that can move in a second direction, and the pusher (4) is connected to the slide (21).

2. The sliding adjustment mechanism according to claim 1, characterized in that, The sliding assembly (2) further includes a slide rail (22) disposed on the transition member (1) along the first direction, and the slide block (21) slides in cooperation with the slide rail (22).

3. The sliding adjustment mechanism according to claim 2, characterized in that, One of the slide rail (22) and the slide block (21) is provided with a T-shaped groove (211), and the other has a T-shaped cross section and can form a sliding fit with the T-shaped groove (211).

4. A sliding adjustment mechanism according to claim 3, characterized in that, The slide (21) includes a base (212), a first mating part (213), a second mating part (214), and bolts, wherein: The first mating part (213) and the second mating part (214) are respectively disposed on opposite sides of the base part (212), and together with the base part (212), they form the T-groove (211); The first mating part (213) and the second mating part (214) are both connected to the base part (212) by the bolts, and the mating clearance between the slide rail (22) and the T-slot (211) is adjusted by adjusting the tightness of the bolts.

5. A sliding adjustment mechanism according to claim 1, characterized in that, The pushing member (4) is a hydraulic cylinder, and the piston rod of the hydraulic cylinder constitutes the pushing part. The piston rod extends and retracts along the second direction to withstand the reaction force during injection.

6. A sliding adjustment mechanism according to claim 1, characterized in that, A connecting component (5) is provided between the push part and the slide (21), and the connecting component (5) is configured to make the push part and the slide (21) detachably connected.

7. A sliding adjustment mechanism according to claim 6, characterized in that, The adapter assembly (5) includes a fixing pin (51), and the push part and the slide (21) are respectively provided with corresponding through connecting holes, and the fixing pin (51) passes through the connecting hole.

8. A sliding adjustment mechanism according to claim 7, characterized in that, A bearing (52) is provided in the connecting hole of the push part, and the fixing pin (51) passes through the bearing (52).

9. A sliding adjustment mechanism according to claim 1, characterized in that, A quick-release assembly is provided between the connector (3) and the injection unit, and the quick-release assembly is configured to make the connector (3) and the injection unit detachably connected.

10. A multi-material injection molding machine, characterized in that, The multi-material injection molding machine includes a fixed template, an injection unit, and a sliding adjustment mechanism as described in any one of claims 1-9, wherein the sliding adjustment mechanism is disposed between the fixed template and the injection unit, and the sliding adjustment mechanism is configured to adjust the position of the injection unit in a first direction.

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