Sliding block auxiliary balance assembly and mold

Abstract

The sliding block auxiliary balance assembly comprises a movable mold plate, a first sliding block and a first core-pulling oil cylinder, the first sliding block is installed on the movable mold plate in a sliding mode, and the first core-pulling oil cylinder drives the first sliding block to move in a reciprocating mode. One of the movable mold plate and the first sliding block is rotatably provided with a balance rod, the other one of the movable mold plate and the first sliding block is provided with racks in pairs, the two ends of the balance rod are provided with balance gears, and the balance gears are connected with the racks in a meshed mode. By arranging the balance rod, the balance gear and the rack, transmission of force on the two sides of the first sliding block is optimized, the movement stability and durability of the first sliding block with the length larger than 1000 mm are remarkably improved, the jamming phenomenon is reduced, the production efficiency is improved, operation is simplified, and the manufacturing and maintaining cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts molds, and more specifically to a slider auxiliary balancing component and a mold. Background Art

[0002] In engineering manufacturing, it is necessary to use a slider for the molding of long structures, especially when the length is greater than 1000mm. During the processing of the slider, due to its large size design, the slider often deforms slightly. Although this deformation is not significant, in actual use, especially in motion control, it may cause the slider to move unsmoothly and jam.

[0003] When a single cylinder is used for driving, since the power point of the cylinder is located at the center of the slider, the deformation of the slider may be concentrated in this area, making the jamming phenomenon during movement more obvious. In order to solve this problem, some researchers suggest using multiple cylinders to drive the slider. However, although this design can disperse the load and improve the movement performance to a certain extent, since the movements of the two cylinders are difficult to be fully synchronized, there is a risk of the slider getting stuck in actual production. The complexity of the synchronization system also significantly increases the manufacturing cost and subsequent maintenance cost. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the present invention proposes a slider auxiliary balancing assembly, which optimizes the transmission of forces on both sides of the first slider by setting a balancing rod, a balancing gear and a rack, significantly improves the movement stability and durability of the first slider with a length greater than 1000mm, reduces the jamming phenomenon, improves production efficiency, simplifies operation, and reduces manufacturing and maintenance costs.

[0005] The invention also provides a mold having the balancing component.

[0006] The technical solution adopted by the present invention is: to provide a slider auxiliary balancing assembly, including a movable template, a first slider and a first core-pulling cylinder, the first slider is slidably installed on the movable template, the first core-pulling cylinder drives the first slider to reciprocate, one of the movable template and the first slider is rotatably installed with a balance rod, and the other is provided with a rack in pair, and balance gears are provided at both ends of the balance rod, and the balance gears are meshingly connected with the racks.

[0007] With the above structure, the first slider with a length greater than 1000mm can achieve smoother operation during movement, significantly reducing the occurrence of jamming. Through the design of the balance bar, the force transmission is optimized, so that the first slider can be more evenly distributed when subjected to force, reducing the movement problems caused by slight deformation.

[0008] In addition, the introduction of the hobbing structure consisting of a balance bar, a balance gear and a rack also provides additional support for the first slider, enhancing its stability and durability. During the entire working process of the slider, the meshing of the balance gear and the rack can reduce friction, prevent the two sides of the first slider from offsetting due to asynchrony, improve the efficiency of movement, and thus extend the service life of the mold. In actual production, the slider auxiliary balancing assembly of the present invention can significantly improve production efficiency and reduce operating difficulty, and because it adopts a single cylinder drive, it greatly simplifies the complexity of the control system. This improvement reduces manufacturing and maintenance costs and improves overall production efficiency.

[0009] According to one embodiment of the present invention, the balancing rod and the movable platen or the first sliding block mounted thereon can rotate relative to each other, and the balancing gears are fixedly mounted at both ends of the balancing rod; or The balance bar is fixedly mounted on the moving plate or the first slider, and the balance gear is rotatably mounted on both ends of the balance bar; the design of the balance bar provides two different installation methods to meet different engineering requirements. In the first method, the balance bar and the moving plate or the first slider can achieve relative rotation, so that their positions can be flexibly adjusted during the movement, thereby further optimizing the movement performance and stability. This design can effectively deal with the slight deformation that may occur in the slider during operation and improve the responsiveness of the system.

[0010] In the second method, the balance bar is fixedly mounted on the moving platen or the first slider, while the balance gear can rotate freely on both ends of the balance bar. This configuration allows the balance gear to operate smoothly when the slider moves, minimizes friction resistance, and ensures the smoothness and continuity of the slider movement. Regardless of which installation method is chosen, the combination of the balance bar and the balance gear will enhance the working stability and reliability of the entire assembly, providing stable support for the molding process of the long structure.

[0011] According to one embodiment of the present invention, the slider auxiliary balancing assembly also includes a second slider, which is slidably mounted on the first slider; the design of the second slider allows it to move freely on the surface of the first slider, and the combination of the first slider and the second slider jointly forms the side features of the long strip structure.

[0012] According to one embodiment of the present invention, the slider auxiliary balancing assembly also includes a limit block installed on the fixed template, and the limit block wedges the second slider when the mold is closed; during the mold closing process, the limit block can wedge the second slider, thereby ensuring the stability and precise positioning of the second slider during operation and preventing the second slider from retreating.

[0013] According to one embodiment of the present invention, the slider auxiliary balancing assembly also includes a self-locking mechanism. During the mold closing process, the limit block triggers the self-locking mechanism, thereby limiting the relative rotation between the balance bar and the movable mold plate or the first slider on which it is installed. This mechanism ensures the stability during mold closing and prevents structural changes caused by external force interference. In the mold closing state, the self-locking mechanism switches to a locked state, so that the hobbing structure composed of the balance bar, the balance gear and the rack is effectively locked to ensure that it is not disturbed and affects the movement performance.

[0014] When the mold is opened, the self-locking mechanism switches to the unlocked state, and the balance bar and the gear hobbing structure resume normal operation, thereby enabling the free movement of the slider. Through this design, the self-locking mechanism provides dynamic support and protection during the mold closing and mold opening process, so that the first slider will not be displaced from the moving platen during movement, and it also effectively prevents the first slider from retreating. This mechanism not only improves the safety and reliability of the overall system, but also provides an important guarantee for high-precision control in the engineering manufacturing process.

[0015] According to one embodiment of the present invention, the self-locking mechanism includes a locking wheel and a locking rod, wherein the locking wheel is fixedly mounted on the balancing rod, and the locking rod is elastically mounted on the first slider. One end of the locking rod is provided with a locking end that engages with the outer teeth of the locking wheel, and the other end is an abutment end. During the mold closing process, the limit block abuts against the abutment end, so that the locking rod overcomes the elastic force and moves toward the locking wheel until the locking end is smoothly engaged with the outer teeth of the locking wheel.

[0016] This design effectively ensures that the relative rotation between the balance bar and the first slider is locked in the mold closing state, providing excellent mechanical stability. The elastic mounting method of the locking rod enables it to respond flexibly when the mold is closed, avoiding the phenomenon of mis-locking or loosening caused by external forces, and ensuring the safety and reliability of operation. At the same time, the combination of the locking wheel and the locking rod is simple and easy to manufacture and maintain.

[0017] In addition, when unlocked, the locking rod can easily return to its original position, making the mold opening operation smoother. Through this self-locking mechanism, the slider auxiliary balance assembly not only improves the stability during movement, but also provides higher safety for engineering manufacturing.

[0018] According to an embodiment of the present invention, a spring is provided between the locking rod and the first sliding block, and the spring has an elastic tendency to keep the locking end and the outer teeth of the locking wheel disengaged.

[0019] According to one embodiment of the present invention, the slider auxiliary balancing assembly further comprises a side slider slidably mounted on the movable platen, the side slider is provided with a positioning hole, and the first slider has a positioning protrusion inserted and matched with the positioning hole.

[0020] According to an embodiment of the present invention, the side slide block is connected to a second core-pulling cylinder.

[0021] A mold comprises a movable mold component and a fixed mold component, wherein the movable mold component comprises any one of the above-mentioned slider auxiliary balancing components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of the product in Example 1 of the present invention.

[0024] Figure 2 It is a three-dimensional diagram of the movable mold assembly in Example 1 of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the movable mold assembly in Example 1 of the present invention.

[0026] Figure 4 It is a stereoscopic diagram of the first sliding block and the second sliding block in Example 1 of the present invention.

[0027] Figure 5 Schematic diagram of the structure of the first slider and the second slider in Example 1 of the present invention.

[0028] Figure 6 It is a three-dimensional diagram of the movable template in Example 1 of the present invention.

[0029] Figure 7 This is a bottom-up stereoscopic view of the first sliding block in Example 1 of the present invention.

[0030] Figure 8 Schematic diagram of the structure of the first sliding block in Example 1 of the present invention.

[0031] Fig. 9 for Figure 8 A partial enlarged view of point A in the middle.

[0032] Fig.10 It is a stereoscopic diagram of the side slider and the second core-pulling slider in Example 1 of the present invention.

[0033] Fig.11 It is a stereoscopic diagram of the fixed mold assembly in Example 1 of the present invention.

[0034] Fig.12 This is a bottom view of the first slider in Example 2 of the present invention.

[0035] Fig.13 Schematic diagram of the connection of the balance bar in Example 2 of the present invention.

[0036] Fig.14 This is a bottom view of the first slider in Example 2 of the present invention.

[0037] Fig.15 for Fig.14 Cross-sectional view along line BB.

[0038] Description of the numbers in the figure: 10. Product; 20. Moving mold assembly; 30. Fixed mold assembly; 40. Self-locking mechanism; 21. Moving plate; 22. First slide block; 23. Second slide block; 24. First core-pulling cylinder; 25. Side slide block; 26. Second core-pulling cylinder; 27. Guide rod; 28. Balance rod; 29. ​​Balance gear; 210. Guide rail; 211. Rack; 21a, avoidance groove; 21b, installation groove; 22a, positioning protrusion; 23a, oblique guide hole; 25a, forming end; 25b, positioning hole; 31. Fixed template; 32. Limit block; 33. Oblique guide column; 41. locking wheel; 42. locking rod; 43. spring; 42a, locking end; 42b, abutting end. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0040] like Figure 1 As shown, the product 10 in the figure is a long structural plastic part, specifically a central bracket on a car, which has reinforcing ribs at both ends along the length direction and an inverted structure on one side.

[0041] like Figure 2-11As shown, in this embodiment, a first slider 22 auxiliary balancing assembly is disclosed, including a movable template 21, a first slider 22 and a first core-pulling cylinder 24, the first slider 22 is slidably installed on the movable template 21, the first core-pulling cylinder 24 drives the first slider 22 to reciprocate, one of the movable template 21 and the first slider 22 is rotatably installed with a balancing rod 28, and the other is paired with a rack 211, and balancing gears 29 are provided at both ends of the balancing rod 28, and the balancing gear 29 is meshingly connected with the rack 211.

[0042] Combination Figure 2-5 As shown, the balancing structure is part of the movable mold assembly 20. A guide rail 210 is provided on the movable mold plate 21 so that the first slider 22 can reciprocate along the guide rail 210. The length of the first slider 22 is 1500 mm, and the middle is hollowed out to install two second sliders 23. The first core-pulling cylinder 24 is fixedly installed on one side of the movable mold plate 21, and its moving end is fixedly connected to the first slider 22, which is specifically used to drive the first slider 22 to reciprocate along the guide rail 210. In this design, the number of the first core-pulling cylinder 24 is one, and it is located in the middle of the first slider 22 to ensure the uniform distribution of power of the first core-pulling cylinder 24 and the stability of operation.

[0043] Furthermore, the slider auxiliary balancing assembly also includes two second sliders 23, which are slidably mounted on the first slider 22. The combination of the first slider 22 and the second slider 23 together forms the side features of the long strip structure, that is, the combination of the first slider 22 and the second slider 23 together forms the undercut structure on one side of the central bracket. A plurality of guide rods 27 are fixedly mounted on the first slider 22, and the second slider 23 is provided with through holes that are slidably matched with the guide rods 27, and the guide rods 27 extend into the front end of the second slider 23. In this embodiment, the second slider 23 is provided with an oblique guide hole 23a, which is correspondingly combined with the guide rod 27. Fig.11 As shown, an inclined guide column 33 is fixedly installed on the fixed template 31, and the inclined guide column 33 is slidably matched with the inclined guide hole 23a. Figure 5 As shown, when the mold is opened, under the action of the inclined guide pillar 33, the second slider 23 performs lateral core pulling in advance, and moves outward relative to the first slider 22.

[0044] Furthermore, in this embodiment, a limit block 32 is fixedly installed on the fixed mold plate 31, and when the mold is closed, the limit block 32 is wedged between the first slider 22 and the second slider 23. Correspondingly, the limit block 32 has a notch for avoiding the guide rod 27. The limit block 32 can effectively wedge the second slider 23 to ensure its stability and precise positioning during the working process, thereby preventing the second slider 23 from retreating or deflecting due to external force. Through the wedging mechanism, the limit block 32 provides additional support in the mold closing state, enhances the anti-retreat ability of the second slider 23, and enables the entire assembly to maintain a good working condition under high load conditions. This design not only improves the molding accuracy of the product 10, but also reduces the processing defects caused by the improper position of the second slider 23.

[0045] Specifically, combined Figure 6 As shown, the balance bar 28 and the movable platen 21 on which it is installed can rotate relative to each other, and the balance gear 29 is fixedly installed at both ends of the balance bar 28.

[0046] Furthermore, in the present embodiment, the movable template 21 is provided with a mounting groove 21b for mounting the balance bar 28, allowing the balance bar 28 to rotate freely, so that the balance gear 29 can rotate synchronously with the rotation of the balance bar 28. This design not only simplifies the structure, but also improves the flexibility of the assembly. The rack 211 fixed at the bottom of the first slider 22 cooperates with the avoidance groove 21a provided on the movable template 21, effectively preventing interference between the rack 211 and the movable template 21, and ensuring the smooth operation of the first slider 22 during the reciprocating motion. When the first slider 22 reciprocates relative to the movable template 21, the rack 211 and the balance gear 29 move synchronously therewith, thereby ensuring the coordination of the overall structure and the smoothness of the movement.

[0047] Combination Figure 6-7 As shown, the relative rotation design between the balance bar 28 and the movable platen 21 on which it is installed enables the balance bar 28 to adapt to the change of force during the movement of the first slider 22, optimize the movement trajectory, and ensure the stable operation of the first slider 22 under high load conditions. The balance gear 29 is fixed at both ends of the balance bar 28 to ensure that it maintains a good meshing state with the rack 211 during the movement, thereby effectively transmitting movement and force.

[0048] In some other embodiments, the movable platen 21 is provided with a mounting groove 21b for fixing the balancing rod 28, so that the balancing rod 28 cannot rotate relative to the movable platen 21. This design ensures that the balancing rod 28 always maintains a stable relative position during operation, thereby enhancing the reliability of the overall structure. The balancing gears 29 are rotatably mounted on both ends of the balancing rod 28 through bearings, so that during the reciprocating motion of the first slider 22, the balancing gears 29 can slide smoothly along the rack 211. Through this configuration, the effective engagement between the balancing gear 29 and the rack 211 can ensure that the force transmitted by the first slider 22 during movement is more uniform, thereby improving the stability and accuracy of the overall movement.

[0049] In some other embodiments, the balance bar 28 is rotatably mounted in the mounting groove 21b at the bottom of the first slider 22, and the rack 211 is fixedly mounted on the movable plate 21. This design enables the balance gear 29 to rotate synchronously with the rotation of the balance bar 28, thereby providing more flexible force transmission and adjustment during the movement of the first slider 22. Through this configuration, when the first slider 22 reciprocates, the balance bar 28 can effectively cope with the changes in the forces on both sides of the first slider 22 during the movement, ensuring that the balance gear 29 and the rack 211 always maintain a good meshing state.

[0050] Combination Figure 8-10 As shown, in this embodiment, the first slider 22 auxiliary balancing assembly also includes a side slider 25 slidably mounted on the movable plate 21. The side slider 25 is provided with a positioning hole 25b and a forming end 25a, and the forming end 25a is used to form a reinforcing rib at the end of the central bracket. The first slider 22 has a positioning protrusion 22a that is inserted and matched with the positioning hole 25b. This design ensures that the side slider 25 can maintain an accurate position during operation.

[0051] The side slider 25 is also connected to a second core-pulling cylinder 26, which, together with the positioning protrusion 22a and the positioning hole 25b, forms an effective core-pulling sequence mechanism. Specifically, when the first slider auxiliary balancing mechanism is demoulding, the core-pulling action of the first slider 22 must be performed first, and then the lateral core-pulling of the side slider 25 is performed. This sequential execution method effectively avoids possible interference and structural collision during the demoulding process, ensuring the stability and safety of the entire molding system. Embodiment 2

[0052] Combination Figure 12-15As shown, this embodiment is different from the first embodiment in that a self-locking mechanism 40 is additionally provided in this embodiment. During the mold closing process, the limit block 32 triggers the self-locking mechanism 40, so that the self-locking mechanism 40 switches from an unlocked state to a locked state, so that the hobbing structure composed of the balance bar 28, the balance gear 29 and the rack 211 is effectively locked to ensure that it is not disturbed and affects the movement performance.

[0053] When the mold is opened, the self-locking mechanism 40 switches to the unlocked state, and the balance bar 28 and the gear hobbing structure resume normal operation, thereby enabling the free movement of the first slider 22. Through this design, the self-locking mechanism 40 provides dynamic support and protection during the mold closing and mold opening process, so that the first slider 22 will not be displaced from the movable platen 21 during movement, and at the same time, the first slider 22 is effectively prevented from retreating, thereby improving the safety and reliability of the overall system.

[0054] Combination Figure 14-15 As shown, in this embodiment, the self-locking mechanism 40 includes a locking wheel 41 and a locking rod 42, wherein the locking wheel 41 is fixedly mounted on the balance bar 28, and the locking rod 42 is elastically mounted inside the first slider 22. One end of the locking rod 42 is provided with a locking end 42a that is engaged with the outer teeth of the locking wheel 41, and the other end is an abutting end 42b, which extends out of the surface of the first slider 22 in the unlocked state. During the mold closing process, the limit block 32 abuts against the abutting end 42b, prompting the locking rod 42 to overcome the elastic force and move toward the locking wheel 41 until the locking end 42a is smoothly engaged with the outer teeth of the locking wheel 41, thereby completing the locking of the balance bar 28. In this state, the relative rotation between the balance bar 28 and the first slider 22 is effectively restricted, thereby ensuring the stability of the first slider 22 under high load. At the same time, the connection between the balance gear 29 and the rack 211 is locked at this time, limiting the relative movement of the first slider 22 and the movable plate 21.

[0055] Specifically, combined Fig.15 As shown, a spring 43 is provided between the locking rod 42 and the first slider 22 , and the spring 43 has an elastic tendency to keep the locking end 42 a and the outer teeth of the locking wheel 41 disengaged. Fig.15 The side groove of the middle limit block 32 facing the abutment end 42b is used to install a wear-resistant block, which can effectively reduce the friction between the limit block 32 and the first slider 22, reduce wear, and thus extend the service life of the mold.

[0056] In some other embodiments, a mold is disclosed, including a movable mold assembly 20 and a fixed mold assembly 30, wherein the movable mold assembly 20 includes the first slider 22 auxiliary balancing assembly described in this embodiment.

[0057] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A slider auxiliary balancing assembly, characterized in that: It includes a movable template, a first slider and a first core-pulling cylinder. The first slider is slidably installed on the movable template. The first core-pulling cylinder drives the first slider to reciprocate. One of the movable template and the first slider is rotatably installed with a balance rod, and the other is provided with a pair of racks. Balance gears are provided at both ends of the balance rod, and the balance gears are meshingly connected with the racks.

2. A slider auxiliary balancing assembly according to claim 1, characterized in that: The balancing rod and the movable platen or the first sliding block mounted thereon can rotate relative to each other, and the balancing gears are fixedly mounted at both ends of the balancing rod; or The balancing rod is fixedly mounted on the movable platen or the first sliding block, and the balancing gear is rotatably mounted on both ends of the balancing rod.

3. A slider auxiliary balancing assembly according to claim 1, characterized in that: It also includes a second slider, which is slidably mounted on the first slider.

4. A slider auxiliary balancing assembly according to claim 3, characterized in that: It also includes a limit block installed on the fixed template, and the limit block is wedged to tighten the second sliding block when the mold is closed.

5. A slider auxiliary balancing assembly according to claim 4, characterized in that: It also includes a self-locking mechanism. When the mold is closed, the limit block triggers the self-locking mechanism, and the self-locking mechanism limits the relative rotation of the balance bar and the movable mold plate or the first sliding block installed thereon.

6. A slider auxiliary balancing assembly according to claim 5, characterized in that: The self-locking mechanism includes a locking wheel and a locking rod, wherein the locking wheel is fixedly mounted on the balancing rod, the locking rod is elastically mounted on the first sliding block, and one end of the locking rod has a locking end that is engaged with the outer teeth of the locking wheel, and the other end is an abutting end. When the mold is closed, the limit block abuts against the abutting end and pushes the locking rod to move toward the locking wheel until the locking end is engaged with the outer teeth of the locking wheel.

7. A slider auxiliary balancing assembly according to claim 6, characterized in that: A spring is arranged between the locking rod and the first sliding block, and the spring has an elastic tendency to keep the locking end and the outer teeth of the locking wheel disengaged.

8. The slider auxiliary balancing assembly according to claim 1, characterized in that: It also includes a side sliding block slidably mounted on the movable template, the side sliding block is provided with a positioning hole, and the first sliding block has a positioning protrusion inserted and matched with the positioning hole.

9. A slider auxiliary balancing assembly according to claim 8, characterized in that: The side slide block is connected with a second core-pulling cylinder.

10. A mold, comprising a movable mold assembly and a fixed mold assembly, characterized in that: The movable mold assembly includes a slider auxiliary balancing assembly as described in any one of claims 1-9.

Images