A material discharging connecting structure suitable for a die casting machine

Abstract

The application discloses a material hitting connecting structure suitable for a die casting machine, which comprises a piston end, an assembly chamber arranged in the piston end, a rod body, one end of the rod body being used for connecting a material cylinder, the other end of the rod body extending into and being connected to the assembly chamber of the piston end, and a floating gap being arranged between the end of the rod body extending into the assembly chamber and the inner wall of the assembly chamber, so that the end of the rod body can float in the radial direction in the assembly chamber by relying on the floating gap during material hitting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die casting machines, in particular to a material hitting connection structure suitable for a die casting machine. BACKGROUND

[0002] At present, in the field of die casting production, the material hitting connection structure is the core component of the die casting machine for realizing metal liquid delivery and forming, and its performance directly affects the equipment operation stability, production efficiency and product quality.

[0003] In the material hitting connection structure, the rod body and the piston end are the driving side, and the related art has a low requirement for the machining precision. If the outer diameter of the rod body end is too thick and the inner diameter of the assembly chamber is too thin during machining, the gap between them will be too small or even interference, and in the extreme case, the rod body cannot be assembled with the piston end, or after assembly, strong pressure collision occurs during the material hitting process, dynamic thermal expansion of the rod body occurs, and the piston end and the rod body are stuck during the material hitting process, resulting in damage to the rod body or the piston end. SUMMARY

[0004] The purpose of the present application is to provide a material hitting connection structure suitable for a die casting machine to improve the operation stability of the material hitting connection in the die casting machine.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is to provide a material hitting connection structure suitable for a die casting machine, comprising: a piston end, an assembly chamber is arranged inside the piston end; a rod body, one end of the rod body is used to connect a barrel, and the other end is inserted into and connected to the assembly chamber of the piston end; wherein a floating gap is arranged between the end of the rod body inserted into the assembly chamber and the inner wall of the assembly chamber, and the end of the rod body can float radially in the assembly chamber by relying on the floating gap during material hitting.

[0006] Preferably, the end of the rod body placed in the assembly chamber is provided with a reinforcing portion and a limiting shoulder protruding radially outward relative to the reinforcing portion, the first floating gap is arranged between the outer wall of the reinforcing portion and the inner wall of the assembly chamber, and the second floating gap is arranged between the outer wall of the limiting shoulder and the inner wall of the assembly chamber; the second floating gap is arranged to have a height greater than the first floating gap.

[0007] Preferably, the piston end is further provided with a floating piece, part of the floating piece is inserted into the assembly chamber, and the floating piece always abuts against the reinforcing portion of the rod body.

[0008] Preferably, the floating member comprises a fixed part, an elastic part and an abutting part, one end of the fixed part is connected with the piston end, the other end is connected with the elastic part, the elastic part is connected with the abutting part; wherein the elastic part applies elastic potential to the abutting part, so that the abutting part abuts against the outer wall of the reinforcing part.

[0009] Preferably, a plurality of floating members are provided, and the plurality of floating members are distributed along the circumferential direction of the piston end.

[0010] Preferably, the abutting surface of the abutting part in contact with the reinforcing part is arc-shaped.

[0011] Preferably, the material removing connecting structure further comprises a filling member, the assembly chamber comprises a first chamber and a second chamber which are in communication with each other, the first chamber is used for accommodating the limiting shoulder, and the filling member is detachably and quickly connected in the second chamber; wherein when the filling member is installed in the second chamber, the end surface of the filling member abuts against the limiting shoulder in the first chamber to limit the rod body from being pulled out of the piston end.

[0012] Further preferably, the bottom of the first chamber is provided with a limiting part matched with the limiting shoulder, one side end surface of the limiting shoulder abuts against the limiting part, and the other side end surface abuts against the filling member to limit the axial disengagement of the rod body relative to the piston end.

[0013] Further preferably, the inner wall of the first chamber is provided with an arc-shaped protruding part, when the limiting shoulder is placed in the first chamber, the arc-shaped protruding part is matched with the circumferential side surface of the limiting shoulder to limit the radial displacement of the limiting shoulder.

[0014] Further preferably, the first chamber is provided with a first opening in the radial direction, the radial dimension of the first opening is equal to the cross-sectional diameter of the reinforcing part; the second chamber is provided with a second opening in the radial direction, the radial dimension of the second opening is the same as the cross-sectional diameter of the filling member; and the radial dimension of the second opening is greater than the radial dimension of the first opening.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] The pre-set floating gap located at the end of the rod and within the assembly space in this application can directly accommodate machining dimensional deviations. The floating gap ensures that the end of the rod and the assembly cavity inside the piston end do not form rigid compression. In other words, the floating gap provides radial adjustment space for the end of the rod. During feeding, the rod can slightly offset its radial position according to the actual force, such as the eccentric force caused by uneven material resistance, so as to avoid the rod getting stuck relative to the piston end during feeding and causing damage, and to ensure that the feeding movement is always smooth. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the material feeding connection structure;

[0018] Figure 2 This is an exploded structural diagram of the material feeding connection structure;

[0019] Figure 3 This is a magnified view of the cross-section of the material connection structure.

[0020] Figure 4 This is a schematic diagram of the connection between the end of the rod and the assembly chamber.

[0021] Figure 5 This is a schematic diagram of the piston end structure;

[0022] Figure 6 This is a schematic diagram of the piston end from another perspective.

[0023] Figure 7 This is a schematic diagram of the piston end from the main viewpoint.

[0024] In the diagram: 1. Feeding connection structure; 10. Piston end; 11. First chamber; 111. Limiting part; 112. Arc-shaped protrusion; 113. First opening; 12. Second chamber; 121. Second opening; 13. Floating part; 131. Fixed part; 132. Elastic part; 133. Abutting part; 1331. Abutting surface; 14. Floating gap; 141. First floating gap; 142. Second floating gap; 15. Assembly chamber; 20. Rod body; 21. Reinforcing part; 22. Limiting shoulder; 23. Rod body; 24. Sealing and shock-absorbing ring; 30. Material cylinder; 40. Filler. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] In a preferred embodiment, see Figures 1 to 7 This application provides a feeding connection structure 1 suitable for a die-casting machine, comprising: a piston end 10, the piston end 10 having an assembly chamber 15 inside; a rod 20, one end of which is used to connect to a material cylinder 30, and the other end extending into and connecting to the assembly chamber 15 of the piston end 10; wherein, specifically... Figure 4 A floating gap 14 is provided between the end of the rod 20 that extends into the assembly chamber 15 and the inner wall of the assembly chamber 15. During material feeding, the end of the rod 20 can float radially within the assembly chamber 15 by relying on the floating gap 14.

[0030] Specifically, the pre-set floating gap 14 located at the end of the rod 20 and within the assembly space in this application can directly accommodate machining dimensional deviations. The floating gap 14 ensures that the end of the rod 20 and the assembly cavity within the piston end 10 do not form rigid compression. In other words, the floating gap 14 provides radial adjustment space for the end of the rod 20. During feeding, the rod 20 can slightly offset its radial position according to the actual force, such as the eccentric force caused by uneven material resistance, so as to avoid the rod 20 getting stuck relative to the piston end 10 during feeding and causing damage, thus ensuring that the feeding movement is always smooth.

[0031] The end of the rod 20 placed in the assembly chamber 15 is provided with a reinforcing part 21 and a limiting shoulder 22 that protrudes radially outward relative to the reinforcing part 21. The reinforcing part 21 is an extension part, and the cross-sectional diameter of the reinforcing part 21 is larger than that of the main body of the rod 20, thereby providing a certain reinforcement to the end of the rod 20. There is a first floating gap 141 between the outer wall of the reinforcing part 21 and the inner wall of the assembly chamber 15, and there is a second floating gap 142 between the outer wall of the limiting shoulder 22 and the inner wall of the assembly chamber 15. The second floating gap 142 is set at a height greater than that of the first floating gap 141 to reduce the collision and wear between the limiting shoulder 22 and the inner wall of the assembly chamber 15.

[0032] Furthermore, the piston end 10 is also provided with a floating member 13. Part of the floating member 13 extends into the assembly chamber 15 and always abuts against the reinforcing part 21 of the rod 20. The floating member 13 compensates for the offset of the end of the rod 20 in the floating gap 14 through its own floating displacement, and provides a restoring force for the position of the reinforcing part 21 of the rod 20, so that the end of the rod 20 can return to the center position, reducing the wear phenomenon between the end of the rod 20 and the inner wall of the assembly chamber 15 during the floating process.

[0033] The floating member 13 includes a fixed part 131, an elastic member 132, and an abutting member 133. One end of the fixed part 131 is connected to the piston end 10, and the other end is connected to the elastic member 132. The elastic member 132 is connected to the abutting member 133. Elastic potential energy is applied to the abutting member 133 through the elastic member 132, so that the abutting member 133 fits against the outer wall of the reinforcing part 21.

[0034] Furthermore, multiple floating elements 13 are provided, and the multiple floating elements 13 are distributed at intervals along the circumferential direction of the piston end 10. Preferably, three floating elements 13 are provided in the circumferential direction of the piston end 10, respectively located at the top, side and bottom, so as to form a three-way floating adjustment of the reinforcing part 21, further improving the floating reset effect.

[0035] Preferably, the contact surface 1331 of the contact member 133 in contact with the reinforcing part 21 is an arc-shaped surface. The curved contour of the arc-shaped surface can guide the movement of the reinforcing part 21. The arc-shaped surface can guide it to smoothly transition along a preset trajectory, reduce the feeling of jamming when the reinforcing part 21 moves, and improve the stability of the rod 20 during the feeding stage.

[0036] Assembly chamber 15 includes a first chamber 11 and a second chamber 12 that are interconnected; the feeding connection structure 1 also includes a filler 40, which is connected to the second chamber 12 in a detachable quick-connect manner; wherein, the other end of the rod 20 can pass through the second chamber 12 and be finally positioned in the first chamber 11. When the filler 40 is installed in the second chamber 12, the inner end face of the filler 40 abuts against the end of the rod 20 located in the first chamber 11 to restrict the rod 20 from coming out of the piston end 10.

[0037] Specifically, the piston end 10 is externally connected to a mechanical drive device to drive the piston end 10 to realize the feeding operation. The filler 40 is a metal disc structure. The filler 40 adopts a metal disc structure, which has excellent pressure resistance and wear resistance. It can withstand the abutment force of the end of the rod 20 and the indirect impact force during the feeding process for a long time. It is not easy to deform or be damaged, reducing the replacement frequency of vulnerable parts. The end of the rod 20 enters the second chamber 12 and moves to be placed in the first chamber 11. The filler 40 is inserted into the second chamber 12. The end of the rod 20 abuts against the filler 40, so the rod 20 will not come out of the second chamber 12. The rod 20 can only be separated from the piston end 10 after the filler 40 is removed from the second chamber 12.

[0038] In this application, the complex disassembly process between the rod 20 and the piston end 10 is simplified to the steps of removing the filler 40 and moving and pulling out the rod 20 by setting up the cavity and the filler 40. The quick-connect property of the filler 40 itself directly improves the utilization rate and production capacity of the equipment. When the filler 40 is inserted into the second chamber 12, its inner end face directly abuts against the end of the rod 20, which is equivalent to adding a rigid support point in the axial direction. Together with the first chamber 11, it forms a T-shaped stable support structure, which can effectively suppress the axial movement of the rod 20 that may occur under impact load, ensure the rigidity of the connection between the piston end 10 and the rod 20, and make the movement of the rod 20 and the feeding action more stable.

[0039] When it is necessary to replace the cylinder 30, inspect the rod 20, or perform maintenance on the inside of the piston end 10, there is no need to disassemble the entire piston end 10 or use complicated tools. Simply remove the filler 40 quickly, and the end of the rod 20 can be separated from the first chamber 11, moved to the second chamber 12, and then removed from the piston end 10. This greatly shortens the equipment downtime for maintenance and significantly improves production efficiency.

[0040] As a preferred embodiment, the limiting shoulder 22 is placed inside the first chamber 11; the bottom of the first chamber 11 is provided with a limiting part 111 that cooperates with the limiting shoulder 22, one end face of the limiting shoulder 22 abuts against the limiting part 111, and the other end face abuts against the filler 40, so as to limit the rod 20 from axially disengaging relative to the piston end 10. At the same time, the limiting part 111 surrounds an opening for the reinforcing part 21 to move, and the first floating gap 141 is the gap between the outer wall surface of the reinforcing part 21 and the limiting part 111.

[0041] The radially protruding limiting shoulder 22 at the end of the rod 20 forms an axial abutment with the limiting part 111 at the bottom of the first chamber 11. Similarly, the other end face of the limiting shoulder 22 is used to abut against the filler 40. The filler 40 cooperates with the limiting part 111 to effectively limit the rod 20 from axially separating from the piston end 10 due to vibration, inertia and other factors in the initial state or non-feeding stage. This mechanical hard limiting structure blocks the accidental separation path between the rod 20 and the piston end 10, avoids interruption of feeding power transmission or damage to equipment parts due to connection failure, and significantly improves the overall reliability of the connection structure.

[0042] As another preferred embodiment, the inner wall of the first chamber 11 is provided with an arc-shaped protrusion 112. When the limiting shoulder 22 is placed in the first chamber 11, the arc-shaped protrusion 112 cooperates with the circumferential side of the limiting shoulder 22 to limit the radial displacement of the limiting shoulder 22. At the same time, the first chamber 11 is provided with a first opening 113 in the radial direction, and the radial dimension of the first opening 113 is equal to the cross-sectional diameter of the reinforcing part 21. The second chamber 12 is provided with a second opening 121 in the radial direction, and the radial dimension of the second opening 121 is the same as the cross-sectional diameter of the filler 40. The radial dimension of the second opening 121 is greater than the radial dimension of the first opening 113.

[0043] After the limiting shoulder 22 of the rod 20 enters through the second opening 121, it moves into the first chamber 11 through the axial movement of the rod 20. The filler 40 only needs to enter the second chamber 12 through the second opening 121. The cross-sectional diameter of the filler 40 is slightly larger than the cross-sectional diameter of the limiting shoulder 22, so that the limiting shoulder 22 can fully abut against the disc surface of the filler 40 to complete the limiting.

[0044] It should be noted that the inner diameters of the first chamber 11 and the second chamber 12 are consistent with the cross-sectional diameter of the accommodating limiting shoulder 22. The difference lies in the fact that the first chamber 11 has an arc-shaped protrusion 112. When the limiting shoulder 22 is located in the first chamber 11, due to the presence of the arc-shaped protrusion 112, the radial dimension of the first opening 113, i.e., the opening size, is smaller than the cross-sectional diameter of the limiting shoulder 22. Therefore, when the limiting shoulder 22 is located in the first chamber 11, it cannot detach from the piston end 10 in the radial direction, and this end of the limiting shoulder 22 cannot generate a certain amount of... The displacement of the distance, and the space inside the second chamber 12 can directly reach the second opening 121 without any restriction or obstruction. Therefore, after the rod 20 is pushed, the limiting shoulder 22 enters the second chamber 12 through axial displacement. At this time, there is no arc-shaped protrusion 112 restricting the size of the opening. Therefore, the limiting shoulder 22 can then disengage from the second chamber 12 toward the second opening 121. At the same time, the prerequisite for completing the above-mentioned action of the rod 20 disengaging from the piston end 10 is that the filling material 40 in the second chamber 12 needs to be removed first to ensure that there is no obstruction in the second chamber 12.

[0045] Further, see Figure 3 The rod body 20 also has a rod body 23 structure with a smaller rod diameter. Specifically, the rod body 23 is provided inside the rod body 20 by sleeved sealing damping rings 24, forming a composite structure in which the outer rod body 20 wraps the inner rod body 23, so as to improve the overall strength of the rod body 20. Preferably, the rod body 23 is provided with two sealing damping rings 24, one small and one large, along the axial direction, and there is a slope between the small sealing damping ring 24 and the large sealing damping ring 24 to improve the assembly strength.

[0046] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A feeding connection structure suitable for a die-casting machine, characterized in that, include: Piston end, wherein an assembly chamber is provided inside the piston end; A rod, one end of which is used to connect to a material cylinder, and the other end extends into and connects to the assembly chamber at the piston end; The rod has a floating gap between the end of the rod that extends into the assembly chamber and the inner wall of the assembly chamber. During material feeding, the end of the rod can float radially within the assembly chamber by relying on the floating gap.

2. The feeding connection structure suitable for a die-casting machine as described in claim 1, characterized in that, The rod body has a reinforcing part at the end placed in the assembly cavity, and a limiting shoulder that protrudes radially outward relative to the reinforcing part. There is a first floating gap between the outer wall of the reinforcing part and the inner wall of the assembly cavity, and a second floating gap between the outer wall of the limiting shoulder and the inner wall of the assembly cavity. The second floating gap is set at a height greater than the first floating gap.

3. The feeding connection structure suitable for a die-casting machine as described in claim 2, characterized in that, The piston end is also provided with a floating component, part of which extends into the assembly cavity and always remains in contact with the reinforcing part of the rod.

4. The feeding connection structure suitable for a die-casting machine as described in claim 3, characterized in that, The floating component includes a fixed part, an elastic part, and an abutting part. One end of the fixed part is connected to the piston end, and the other end is connected to the elastic part. The elastic part is connected to the abutting part. Elastic potential energy is applied to the abutting member by the elastic element, causing the abutting member to abut against the outer wall of the reinforcing part.

5. The feeding connection structure suitable for a die-casting machine as described in claim 3, characterized in that, Multiple floating components are provided, and the multiple floating components are distributed at intervals along the circumferential direction of the piston end.

6. The feeding connection structure suitable for a die-casting machine as described in claim 4, characterized in that, The contact surface between the abutting member and the reinforcing part is constructed as an arc-shaped surface.

7. The feeding connection structure suitable for a die-casting machine as described in claim 2, characterized in that, It also includes a filler, and the assembly chamber includes a first chamber and a second chamber that are interconnected. The first chamber is used to accommodate the limiting shoulder, and the filler is accommodated in the second chamber in a detachable quick-connect manner. When the filler is installed in the second chamber, the end face of the filler abuts against the limiting shoulder located in the first chamber to prevent the rod from dislodging from the piston end.

8. The feeding connection structure suitable for a die-casting machine as described in claim 7, characterized in that, The bottom of the first chamber is provided with a limiting part that cooperates with the limiting shoulder. One end face of the limiting shoulder abuts against the limiting part, and the other end face abuts against the filler, so as to restrict the rod from axially disengaging relative to the piston end.

9. The feeding connection structure suitable for a die-casting machine as described in claim 8, characterized in that, The inner wall of the first chamber is provided with an arc-shaped protrusion. When the limiting shoulder is placed in the first chamber, the arc-shaped protrusion cooperates with the circumferential side of the limiting shoulder to limit the radial displacement of the limiting shoulder.

10. The feeding connection structure suitable for a die-casting machine as described in claim 9, characterized in that, The first chamber has a first opening in the radial direction, and the radial dimension of the first opening is equal to the cross-sectional diameter of the reinforcing part; The second chamber is provided with a second opening in the radial direction, the radial dimension of which is the same as the cross-sectional diameter of the filler; The radial dimension of the second opening is greater than the radial dimension of the first opening.

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