Injection mold for automobile swing arm

Abstract

The invention discloses an automobile swing arm injection mold which comprises a floating compensation mechanism, the floating compensation mechanism comprises a hot nozzle sleeve and a floating glue sealing insert, the floating glue sealing insert is arranged on the periphery of the hot nozzle sleeve in a floating mode and floats, and the floating glue sealing insert presses a ball seat to adjust a gap between the floating glue sealing insert and the ball seat. Therefore, the melt is prevented from flowing into the gap. According to the automobile swing arm injection mold, the floating glue sealing insert is arranged to adjust the gap in a self-adaptive mode, the burr problem caused by machining tolerance is solved, and the appearance quality of a ball bowl is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile molds, and more specifically to an automobile swing arm injection mold. Background Art

[0002] In the automobile suspension system, the ball head assembly on the swing arm is one of the important components to achieve steering and movement flexibility. Its structure is as follows Figure 1 As shown, it includes a ball seat, a ball pin and a ball cup. The ball pin is usually connected to the ball seat through a ball head, allowing the swing arm to move freely in multiple dimensions. To ensure the motion accuracy and durability of the ball head assembly, the ball pin and the ball seat are usually made of metal materials. This design has high mechanical strength and wear resistance.

[0003] However, since both the ball seat and the ball pin are metal parts, their processing will inevitably bring about certain dimensional tolerances. This tolerance not only affects the assembly gap between the ball seat and the ball pin, but also directly affects the bonding quality of the ball bowl and the ball seat during the injection molding process. Specifically, the exposed design at both ends of the ball seat will form a sealing surface, and the metal processing tolerance may cause the sealing surface to have a flash phenomenon during injection molding (that is, excess plastic material overflows along the mold parting line). This flash not only affects the appearance of the product, but may also have an adverse effect on the sealing and mechanical properties of the ball bowl, thereby reducing the reliability and service life of the assembly. 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 an automobile swing arm injection mold, which solves the flash problem caused by processing tolerance and improves the appearance quality of the bowl by setting a floating sealant insert to adaptively adjust the gap.

[0005] The technical solution adopted by the present invention is: to provide an automobile swing arm injection mold, including a floating compensation mechanism, the floating compensation mechanism includes a hot nozzle sleeve and a floating sealant insert, the floating sealant insert is floatingly arranged on the outer periphery of the hot nozzle sleeve, and the floating sealant insert is pressed against the ball seat to adjust the gap between the floating sealant insert and the ball seat to limit the melt from flowing into the gap.

[0006] After adopting the above structure, the floating sealant insert can adaptively adjust the sealant gap of the ball seat, effectively solving the flashing problem caused by metal processing tolerance and ensuring the combination quality of the ball bowl and the ball seat during the injection molding process. This design not only improves the sealing and mechanical properties of the product, extends the service life of the components, but also improves the appearance quality, reduces the finishing process, significantly improves production efficiency, reduces manufacturing costs, and provides reliable guarantee for the high-precision manufacturing of automotive suspension system components.

[0007] According to one embodiment of the present invention, two elastic glue rods are symmetrically installed on both sides of the floating glue insert, and the elastic glue rods are arranged to press the floating glue insert toward the ball seat; the elastic glue rods continuously press the floating glue insert toward the ball seat through elastic action, thereby ensuring that the sealing surface fits tightly with the ball seat, avoiding the flashing phenomenon caused by uneven gap or displacement, and ensuring the quality and reliability of the molded parts.

[0008] According to one embodiment of the present invention, movable blocks and limit blocks are provided on both sides of the floating sealant insert, the movable block is located inside the limit block and slides obliquely with it, and the movable block is tightly against the notches on both sides of the floating sealant insert, and the elastic glue rod is tightly against the limit block; through the inclined wedge structure design composed of the movable block and the limit block, the vertical movement of the floating sealant insert is converted into the lateral movement of the movable block, thereby effectively dispersing and absorbing the force of the floating sealant insert during the vertical pressing process, making the sealing process more stable and reliable. This design not only improves the movement accuracy of the floating sealant insert, but also enhances its fitting effect on the sealant surface of the ball seat, further reduces the flashing phenomenon, and at the same time prolongs the service life of the mold components.

[0009] According to an embodiment of the present invention, the bottom of the notch is provided with an inclined surface, the movable block is provided with a contact surface having an inclination equal to that of the inclined surface, and / or; The limit block is obliquely provided with an oblique guide groove, and the movable block is slidably matched with the oblique guide groove.

[0010] According to one embodiment of the present invention, the mold also includes a molding mechanism, which includes a first slider and a second slider, the second slider is located on the inner side of the first slider and is slidably matched with the first slider, and the combination of the first slider and the second slider is used to mold the lip on the bowl.

[0011] According to one embodiment of the present invention, when the mold is opened, the first slider moves from the inside to the outside in sequence to the first position, the second position and the third position, the second slider is connected to a guide rod, and the guide rod and the first slider are limited and movable. When the first slider moves from the first position to the second position, the second slider moves away from the ball seat relative to the ball pin, and when the first slider moves from the second position to the third position, the first slider drives the first slider to move synchronously through the guide rod; in the process of the first slider moving to the second position, the second slider moves away from the ball seat relative to the ball pin, so that it is separated from the inner side of the lip edge, and the interference of the undercut structure is successfully released. Subsequently, when the first slider further moves to the third position, the first slider drives the second slider to move synchronously through the linkage mechanism of the guide rod, ensuring that the entire demoulding process is smooth and accurate.

[0012] According to an embodiment of the present invention, the first sliding block and / or the second sliding block is connected to a cylinder.

[0013] According to one embodiment of the present invention, an annular groove is provided on the outer periphery of the ball pin, and the inner end of the guide rod is adapted to the annular groove. When the mold is closed, the inner end of the guide rod is inserted into the annular groove to limit the axial movement of the ball pin; when the mold is closed, the inner end of the guide rod is accurately inserted into the annular groove of the ball pin, effectively limiting the axial movement of the ball pin. This structural design plays a dual role in injection molding: on the one hand, the limiting effect of the annular groove prevents the ball pin from axial displacement due to force during melt injection or solidification; on the other hand, it ensures that the ball pin can maintain a predetermined position and posture after molding, providing a stable foundation for the subsequent demolding steps.

[0014] According to an embodiment of the present invention, when the mold is closed, the wedge block on the fixed plate of the mold abuts against the guide rod, so that the inner end of the guide rod is clamped into the annular groove.

[0015] According to an embodiment of the present invention, a first elastic member is disposed between the first slider and the second slider, and the first elastic member has an elastic tendency to move the second slider away from the first slider; and / or The guide rod is sleeved with a second elastic member, and the second elastic member has an elastic tendency to move the guide rod in a direction away from the ball pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a half-section view of the ball head assembly in an embodiment of the present invention.

[0018] Figure 2 It is a bottom view of the mold in the embodiment of the present invention.

[0019] Figure 3 for Figure 2 Section view along line AA.

[0020] Figure 4 for Figure 3 A partial enlarged view of the mold.

[0021] Figure 5 It is a three-dimensional diagram of the forming mechanism in the embodiment of the present invention.

[0022] Figure 6 Schematic diagram of the structure of the forming mechanism in the embodiment of the present invention.

[0023] Figure 7 It is a three-dimensional diagram of the floating compensation mechanism in an embodiment of the present invention.

[0024] Figure 8 1 is an exploded view of the floating compensation mechanism in an embodiment of the present invention.

[0025] Fig. 9 It is a cross-sectional view of the floating compensation mechanism in an embodiment of the present invention.

[0026] Fig.10 It is a three-dimensional diagram of the molding mechanism when the mold is closed in the embodiment of the present invention.

[0027] Fig.11 It is a cross-sectional view of the forming mechanism in the embodiment of the present invention.

[0028] Fig.12 It is a cross-sectional view of the molding mechanism when the mold is opened in the embodiment of the present invention.

[0029] Fig.13 It is a cross-sectional view of the molding mechanism during mold closing in another embodiment of the present invention.

[0030] Fig.14 It is a cross-sectional view of the molding mechanism when the mold is opened in another embodiment of the present invention.

[0031] Description of the numbers in the figure: 10. Ball head assembly; 20. Floating compensation mechanism; 30. Forming mechanism; 11. Ball seat; 12. Ball pin; 13. Ball bowl; 14. Lower arm body; 12a, ball head; 12b, annular groove; 13a, lips; 21. Fixed template; 22. Wedge block; 23. Hot nozzle sleeve; 24. Floating sealant insert; 25. Movable block; 26. Limit block; 27. Elastic glue stick; 24a, notch; 24b, inclined surface; 24c, sealing end; 25a, contact surface; 26a, oblique guide groove; 31. first slide block; 32. second slide block; 33. guide rod; 34. first elastic member; 35. first oil cylinder; 36. connecting block; 37. pull rod; 38. second oil cylinder; 39. second elastic member; 31a, matching groove; 33a, shoulder; 33b, abutment portion; 36a. Chute. DETAILED DESCRIPTION

[0032] 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

[0033] like Figure 1 As shown, in this embodiment, the mold is used to form the ball bowl 13 structure in the ball head assembly 10. The ball head assembly 10 includes a ball seat 11, a ball pin 12 and a ball bowl 13, wherein the ball seat 11 is a hollow cylindrical metal part, fixed to the lower arm body 14 by welding; the ball pin 12 is also a metal part, and a ball head 12a is provided at its upper end, and an annular groove 12b is provided on the outer periphery of the ball pin 12 for lubricant retention and sealing auxiliary positioning. The ball bowl 13 formed by the mold covers the upper and lower end surfaces of the ball seat 11, and extends downward to form a lip 13a, which overlaps the edge of the dust cover to achieve effective sealing, prevent dust or impurities from entering the interior of the ball head assembly 10, and improve its structural stability and service life.

[0034] like Figure 2-14 As shown, in this embodiment, an automobile swing arm injection mold is disclosed, including a floating compensation mechanism 20, the floating compensation mechanism 20 includes a hot nozzle sleeve 23 and a floating sealant insert 24, the floating sealant insert 24 is floatingly arranged on the outer periphery of the hot nozzle sleeve 23, and the floating sealant insert 24 is pressed toward the ball seat 11 to adjust the gap between the floating sealant insert 24 and the ball seat 11 to limit the melt from flowing into the gap.

[0035] In this embodiment, the floating compensation mechanism 20 is fixedly mounted on the fixed template 21, and specifically includes the following structural and functional features: First, a wedge block 22 and a hot nozzle sleeve 23 are fixedly installed on the fixed mold plate 21. The wedge block 22 is used to stabilize the position of the first slider 31, and the hot nozzle sleeve 23 is used to guide the molten material into the mold cavity. The molten material is evenly injected into the mold cavity through the internal channel of the hot nozzle sleeve 23, ensuring the smoothness and accuracy of the molding process.

[0036] The outer periphery of the nozzle sleeve 23 is designed as a cylindrical structure, and the floating sealant insert 24 is designed as a sleeve-shaped structure, whose inner diameter matches the outer periphery of the nozzle sleeve 23, so that it can be sleeved on the outer peripheral surface of the nozzle sleeve 23 and can freely float up and down along the axial direction of the nozzle sleeve 23. This floating characteristic enables the floating sealant insert 24 to automatically adjust its position during the mold closing process to adapt to different actual working conditions.

[0037] The lower end of the floating sealant insert 24 is designed as a sealant end 24c, and its main function is to be in close contact with the upper end of the ball seat 11 to form a sealing effect to prevent the molten material from leaking or generating unnecessary flash during the injection molding process.

[0038] Furthermore, during the machining process, the flatness of the upper and lower ends of the ball seat 11 can be easily controlled accurately, but due to process limitations, there may be a certain machining error in the axial length of the ball seat 11. If the actual axial length of the ball seat 11 is less than the design standard, the mold is prone to poor sealing in the closed state, resulting in flash defects in the molded part.

[0039] To solve this problem, the present invention provides a sealing insert with a floating function, so that it can automatically float downward according to the actual size of the ball seat 11 when the mold is closed, thereby compensating for the processing error of the axial length of the ball seat 11. In this way, the sealing end 24c of the floating sealing insert 24 always keeps close contact with the upper end of the ball seat 11, effectively eliminating the problems of melt leakage and flashing, and ensuring the stability and consistency of product molding quality.

[0040] Specifically, combined Figure 6-9 As shown, in this embodiment, two elastic glue rods 27 are symmetrically installed on both sides of the floating glue insert 24, and the elastic glue rods 27 are arranged to press the floating glue insert 24 toward the ball seat 11. A movable block 25 and a limit block 26 are provided on both sides of the floating glue insert 24. The movable block 25 is located inside the limit block 26 and slides with it obliquely, and the movable block 25 is tightly against the notches 24a on both sides of the floating glue insert 24, and the elastic glue rods 27 are tightly against the limit block 26. The bottom of the notch 24a is provided with an inclined surface 24b, and the movable block 25 is provided with a contact surface 25a with the same inclination as the inclined surface 24b. The limit block 26 is obliquely provided with an inclined guide groove 26a, and the movable block 25 is slidably matched with the inclined guide groove 26a.

[0041] Furthermore, in this embodiment, the upper end of the nozzle sleeve 23 extends radially outward to form a round shoulder structure surrounding the nozzle sleeve 23, and the bottom surface of the round shoulder is used to contact and limit the upper end of the floating sealant insert 24. When the upper end of the floating sealant insert 24 moves upward and abuts against the bottom surface of the round shoulder, the floating sealant insert 24 is pushed to its upper stroke position, and the round shoulder plays a role in limiting the floating sealant insert 24 to prevent it from moving further upward.

[0042] The floating sealant insert 24 has notch 24a structures on both sides of the upper part, and the bottom of the notch 24a is designed as an inclined surface 24b, forming a downwardly inclined slope shape. Two movable blocks 25 are respectively arranged on both sides of the floating sealant insert 24, and the inner surfaces of the two movable blocks 25 are in contact with the inclined surface 24b of the notch 24a, and can slide relatively along the inclined surface 24b. The outer surface of the movable block 25 forms an oblique sliding fit relationship with the corresponding limit block 26, and the movable block 25 and the limit block 26 together form an oblique wedge structure.

[0043] The upper end of the limit block 26 is connected to the elastic rubber rod 27, which provides a continuous elastic force. Under the action of the elastic rubber rod 27, through the wedge force transmission between the limit block 26 and the movable block 25, the floating sealant insert 24 is pushed to the downward stroke position by the elastic force under normal conditions, that is, the floating sealant insert 24 is always kept in a downwardly extended state.

[0044] When the mold is closed, the sealing end 24c of the floating sealing insert 24 contacts the upper end surface of the ball seat 11, and under the reaction force of the ball seat 11, the floating sealing insert 24 starts to move upward, and at the same time drives the movable blocks 25 on both sides to move upward. Since the inner side of the movable block 25 contacts the inclined surface 24b at the bottom of the notch 24a of the floating sealing insert 24, the movable block 25 will be guided by the inclined surface 24b to slide outward laterally during the process of moving upward with the floating sealing insert 24. This lateral sliding fit ensures the coordinated action of the movable block 25 and the limit block 26, which is conducive to the stable operation of the overall structure.

[0045] Specifically, combined Figure 2-6 As shown, in this embodiment, the mold further includes a molding mechanism 30, the molding mechanism 30 includes a first slider 31 and a second slider 32, the second slider 32 is located inside the first slider 31 and slidably cooperates with the first slider 31, and the combination of the first slider 31 and the second slider 32 is used to mold the lip 13a on the bowl 13. The first slider 31 and / or the second slider 32 are connected to an oil cylinder. A first elastic member 34 is provided between the first slider 31 and the second slider 32, and the first elastic member 34 has an elastic tendency to move the second slider 32 away from the first slider 31.

[0046] Furthermore, in this embodiment, the mold is a one-outlet two-mold, that is, the mold can process and shape two workpieces at the same time. A first oil cylinder 35 is provided in the middle area of ​​the mold, and the first oil cylinder 35 is used to provide driving force. Second oil cylinders 38 are symmetrically provided on both sides of the mold, and the output ends (moving ends) of the two second oil cylinders 38 are respectively fixedly connected to the first sliders 31 on the outer sides of the two groups of first sliders 31, in order to drive the two outer first sliders 31 to move in the outer direction, thereby realizing the function of opening or closing the mold.

[0047] Furthermore, a connecting block 36 is fixedly mounted on the moving block of the first oil cylinder 35. The structure of the connecting block 36 is designed to be symmetrically provided with two inclined grooves 36a. Each inclined groove 36a cooperates with the end of a tie rod 37 through a column groove structure, thereby forming a stable and slidable connection relationship. The other end of the tie rod 37 is respectively connected to the inner first slider 31 of the two groups of first sliders 31, thereby realizing synchronous action. Specifically, when the first oil cylinder 35 drives its moving block to move in a straight line direction, the moving block can simultaneously drive the inner first slider 31 of the two groups of first sliders 31 to move synchronously along the opposite inward direction through the cooperation of the two inclined grooves 36a on the connecting block 36 and the tie rod 37, thereby realizing the function of clamping or releasing the inside of the mold.

[0048] In addition, the two groups of four first sliders 31 are all provided with matching grooves 31a, and the structures of these matching grooves 31a match with the four second sliders 32. The four second sliders 32 are respectively connected with the corresponding guide rods 33, and the outer end of each guide rod 33 is provided with a shoulder 33a, and the structure of the shoulder 33a matches with the matching groove 31a on the first slider 31, so as to provide a stable guiding and positioning function during the sliding process. In addition, the guide rod 33 and the first slider 31 are designed to be obliquely slidably matched. Through this matching relationship, the guide rod 33 can further ensure the stability and accuracy of the first slider 31 while driving the second slider 32 to move.

[0049] Specifically, combined Figure 11-12As described, in this embodiment, when the mold is opened, the first slider 31 moves from the inside to the outside to the first position, the second position and the third position in sequence, the second slider 32 is connected to the guide rod 33, and the guide rod 33 and the first slider 31 are limited and movable. When the first slider 31 moves from the first position to the second position, the second slider 32 moves away from the ball seat 11 relative to the ball pin 12. When the first slider 31 moves from the second position to the third position, the first slider 31 drives the first slider 31 to move synchronously through the guide rod 33; in the process of the first slider 31 moving to the second position, the second slider 32 moves away from the ball seat 11 relative to the ball pin 12, so that it is separated from the inner undercut position of the lip 13a, and the interference of the undercut structure is successfully released. Subsequently, when the first slider 31 further moves to the third position, through the linkage mechanism of the guide rod 33, the first slider 31 drives the second slider 32 to move synchronously, ensuring that the entire demoulding process is smooth and accurate.

[0050] Furthermore, combined with Fig.11 As shown, Fig.11 The positional relationship between the first slider 31 and the second slider 32 of the mold in the mold closing state is shown. In this state, the first slider 31 is in the first position, and the two first sliders 31 are respectively located on the left and right sides of the ball head assembly 10, showing a symmetrical distribution state. Fig.12 The change in the position of the slider during the mold opening process is further described. Fig.12 On the right side, the first slider 31 moves outward from the initial first position to the second position; in order to clearly compare the changes shown in the figure, Fig.12 The left side of the figure shows that the first slider 31 remains in the first position and does not move. However, in the actual mold opening process, the first sliders 31 on the left and right sides of the mold will be synchronously translated from the first position to the outside to the second position to ensure the coordination and synchronization of the mold demolding action.

[0051] It can be further observed from the figure that the upper end of the ball seat 11 is in close contact with the sealing end 24c of the floating sealing insert 24, and the lower end of the ball seat 11 is against the upper ends of the two first sliders 31 to form a support. When the first slider 31 moves from the first position to the second position, the second slider 32 moves inward along the oblique path under the constraint and guidance of the guide rod 33. This oblique movement causes the second slider 32 to move downward until the upper end position of the second slider 32 is lower than the height of the lip 13a, ensuring the smooth demoulding process.

[0052] As the first slider 31 continues to move outward to the second position, the shoulder 33a of the guide rod 33 gradually contacts the bottom of the matching groove 31a and forms a support. At this time, the first slider 31 drives the second slider 32 to move outward synchronously through the force transmission of the guide rod 33, and finally realizes the linkage movement between the two. When the first slider 31 moves to the third position, the second slider 32 also completes the outward movement, and the entire demoulding action is successfully completed. This structural design ensures the coordinated work of the first slider 31 and the second slider 32 during the mold opening process, effectively improving the demoulding efficiency and the stability of the mold operation.

[0053] Specifically, combined Figure 13-14 As shown, in another embodiment, the outer peripheral surface of the ball pin 12 is provided with an annular groove 12b, and the annular groove 12b is evenly distributed along the circumference of the ball pin 12 to form a stable limiting structure. The inner end of the guide rod 33 is designed to have a snap-fit ​​portion, and the size and shape of the snap-fit ​​portion match the annular groove 12b, so that the inner end of the guide rod 33 is an abutment portion 33b, and the abutment portion 33b can be accurately embedded in the annular groove 12b. When the mold is closed, the guide rod 33 moves axially under the action of external force, and the snap-fit ​​portion of its inner end is snap-fitted with the annular groove 12b, thereby effectively limiting the displacement of the ball pin 12 in the axial direction, ensuring that the ball pin 12 maintains a stable positioning state during the mold closing process.

[0054] In addition, a wedge block 22 is provided on the fixed mold plate 21 of the mold. The position and size of the wedge block 22 are precisely designed so that it can abut against the guide rod 33 during the mold closing process. The wedge block 22 applies a force to push the guide rod 33 to move toward the ball pin 12, so that the inner end of the guide rod 33 is smoothly inserted into the annular groove 12b, thereby completing the locking of the axial position of the ball pin 12.

[0055] Furthermore, a first elastic member 34 is provided between the first slider 31 and the second slider 32. The first elastic member 34 is a compression spring or other elastic device, and its structural design enables it to have elastic potential energy for outward expansion, which is specifically manifested in driving the second slider 32 to move in a direction away from the first slider 31, thereby forming a stable reset or separation trend between the slider components.

[0056] In addition, the outer periphery of the guide rod 33 is sleeved with a second elastic member 39, which can also be a compression spring or a similar elastic member, and has an elastic tendency to push the guide rod 33 to move away from the ball pin 12. When the external force is released, the elastic potential energy of the second elastic member 39 is released, pushing the guide rod 33 to reset, making it away from the ball pin 12, and then releasing the clamping state, providing a smooth movement space for subsequent mold separation.

[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, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[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. An automobile swing arm injection mold, characterized in that: It includes a floating compensation mechanism, which includes a hot nozzle sleeve and a floating sealant insert. The floating sealant insert is floated on the outer periphery of the hot nozzle sleeve and is pressed against a ball seat to adjust the gap between the floating sealant insert and the ball seat to limit the melt from flowing into the gap.

2. The automobile swing arm injection mold according to claim 1, characterized in that: Two elastic glue rods are symmetrically installed on both sides of the floating glue sealing insert, and the elastic glue rods are arranged to press the floating glue sealing insert toward the ball seat.

3. The automobile swing arm injection mold according to claim 2, characterized in that: Movable blocks and limit blocks are provided on both sides of the floating sealant insert, the movable block is located inside the limit block and slides obliquely with it, and the movable block is tightly against the notches on both sides of the floating sealant insert, and the elastic glue rod is tightly against the limit block.

4. The automobile swing arm injection mold according to claim 3, characterized in that: The bottom of the notch is provided with an inclined surface, and the movable block is provided with a contact surface having an inclination equal to that of the inclined surface, and / or; The limit block is obliquely provided with an oblique guide groove, and the movable block is slidably matched with the oblique guide groove.

5. The automobile swing arm injection mold according to claim 1, characterized in that: It also includes a molding mechanism, which includes a first slider and a second slider. The second slider is located on the inner side of the first slider and slidably cooperates with the first slider. The combination of the first slider and the second slider is used to mold the lip on the bowl.

6. The automobile swing arm injection mold according to claim 5, characterized in that: When the mold is opened, the first slider moves from the inside to the outside to the first position, the second position and the third position in sequence. The second slider is connected to a guide rod, and the guide rod and the first slider are limited and movable. When the first slider moves from the first position to the second position, the second slider moves away from the ball seat relative to the ball pin. When the first slider moves from the second position to the third position, the first slider drives the first slider to move synchronously through the guide rod.

7. The automobile swing arm injection mold according to claim 6, characterized in that: The first sliding block and / or the second sliding block are connected to an oil cylinder.

8. The automobile swing arm injection mold according to claim 6, characterized in that: The outer periphery of the ball pin is provided with an annular groove, and the inner end of the guide rod is adapted to the annular groove. When the mold is closed, the inner end of the guide rod is inserted into the annular groove to limit the axial movement of the ball pin.

9. The automobile swing arm injection mold according to claim 8, characterized in that: When the mold is closed, the wedge block on the fixed mold plate of the mold presses against the guide rod, so that the inner end of the guide rod is clamped into the annular groove.

10. The automobile swing arm injection mold according to claim 8, characterized in that: A first elastic member is disposed between the first slider and the second slider, and the first elastic member has an elastic tendency to move the second slider away from the first slider; and / or The guide rod is sleeved with a second elastic member, and the second elastic member has an elastic tendency to move the guide rod in a direction away from the ball pin.

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