Connecting structure of material box and air cylinder and hydraulic press using connecting structure

Abstract

The utility model discloses a connecting structure of a material box and an air cylinder and a hydraulic press using the connecting structure. The connecting structure of the material box and the air cylinder comprises the material box, the air cylinder, a connecting block, a concave block and a locking piece. A concave groove is formed in the concave block, the connecting block is embedded in the concave groove, one end of the concave block is fixed to the material box, an avoiding notch is formed in the other end of the concave block, the connecting block is provided with a connecting rod mounting groove, and a connecting hole is formed in the top of the connecting block; the driving end of the connecting rod penetrates through the avoiding notch and is inserted into the connecting rod mounting groove, and the locking piece penetrates through the connecting hole and is detachably connected with the connecting rod through the through hole. By the adoption of the structure, an existing connecting mode of an air cylinder connecting rod and a connecting piece is replaced, the connecting rod and the connecting block are fixed through the locking piece, threads on the air cylinder connecting rod are prevented from being damaged due to frequent mutual movement, and the phenomenon of slipping between the air cylinder connecting rod and the connecting block is avoided; therefore, the problem that the connecting rod and the connecting device fall off is solved.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic press transmission structures, in particular to a connecting structure of a material box and a cylinder and a hydraulic press using the same. Background Art

[0002] Powder metallurgy forming technology plays a vital role in modern manufacturing, with powder compacting being one of the most common methods. Hydraulic presses are essential equipment for powder compacting, and the connection between the cartridge and the cylinder connecting rod is crucial to production efficiency and product quality.

[0003] The cartridge filling device of an existing hydraulic press typically consists of a cartridge, cylinder, guide rails, and a plate. In this device, the cartridge and cylinder are connected via a cylinder connecting rod and connectors. Therefore, the connectors must withstand the intense pressure and frequent movement of the cartridge during the pressing process. However, in actual production, the threads on the cylinder connecting rod often become damaged and slip due to the frequent relative movement. This can not only cause the connecting rod to fall off the connecting device, but also affect the normal operation of the press and even pose a threat to production safety. Utility Model Content

[0004] The purpose of the utility model is to provide a connection structure between a material box and a cylinder and a hydraulic press using the same, so as to solve the problem that the threads of the cylinder connecting rod are damaged and slip due to frequent mutual movement.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a connection structure between a material box and a cylinder, comprising a material box and a cylinder, and further comprising a connecting block, a concave block and a locking piece; a concave groove is provided in the concave block, the connecting block is embedded in the concave groove, one end of the concave block is fixed to the material box, and the other end of the concave block is provided with an avoidance notch, the width of the avoidance notch is smaller than the width of the connecting block; a connecting rod mounting groove is provided on the side of the connecting block facing the cylinder, a connecting hole is provided on the top of the connecting block, and the connecting rod mounting groove and the connecting hole are communicated with each other;

[0007] The cylinder is provided with a connecting rod, which is used to drive the connecting rod to extend or retract; a longitudinally arranged through hole is provided at the proximal end of the driving end of the connecting rod; the driving end of the connecting rod passes through the avoidance gap and is inserted into the connecting rod installation groove, and the locking piece passes through the connecting hole and is detachably connected to the connecting rod through the through hole.

[0008] In the connection structure between the material box and the cylinder, the connecting hole and the through hole are both provided with a first thread, the side wall of the locking member is provided with a second thread adapted to the first thread, and the locking member is threadedly connected to the connecting hole and the through hole in sequence.

[0009] In the connection structure between the material box and the cylinder, the locking member is an M8 bolt.

[0010] In the connection structure between the material box and the cylinder, a limiting protrusion is provided on the side of the concave groove facing the cylinder, and the connecting block is provided with a limiting groove that is adapted to the position and shape of the limiting protrusion. When the connecting block is embedded in the concave groove, the limiting protrusion is embedded in the limiting groove.

[0011] In the connection structure between the material box and the cylinder, the limiting protrusion is arranged along the height direction of the concave groove, and the cross-section of the limiting protrusion is dovetail-shaped; the limiting groove is a dovetail groove.

[0012] In the connection structure between the material box and the cylinder, the two side surfaces of the connection block are respectively convex outwards and form curved surfaces respectively, and the shape of the concave groove is adapted to the connection block.

[0013] In the connection structure between the material box and the cylinder, a concave cavity is provided on the outer periphery of the notch of the connecting rod installation slot.

[0014] The utility model also provides a hydraulic press, wherein a material box filling device of the hydraulic press adopts the above-mentioned connection structure between the material box and the cylinder.

[0015] A technical solution in the present invention can have the following beneficial effects:

[0016] The described cartridge-cylinder connection structure is applied to the cartridge filling device of a hydraulic press. This structure replaces the existing connection method between the cylinder connecting rod and the connecting piece. The connecting rod and the connecting block are fixed by a locking piece, preventing damage to the threads on the cylinder connecting rod due to frequent relative movement. This prevents slippage between the cylinder connecting rod and the connecting block, thereby preventing the connecting rod from falling off the connecting device and extending the service life of the cylinder connecting rod. Furthermore, since the problem of cylinder connecting rod slippage is solved, the cylinder does not need to be frequently replaced, thereby improving on-site production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of one embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the connecting block and the concave block in one embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of a connecting block in one embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a concave block in one embodiment of the present invention;

[0021] In the accompanying drawings: material box 1, cylinder 2; connecting block 3, concave block 4, locking piece 5;

[0022] Connecting rod 21; connecting rod mounting groove 30; connecting hole 31; limiting groove 32; curved surface 33; concave cavity 34; concave groove 40; avoidance notch 41; limiting protrusion 42. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features without distinction of order or importance.

[0025] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Please refer to Figures 1 to 4The utility model provides a connection structure between a material box and a cylinder, comprising a material box 1 and a cylinder 2, and also comprising a connecting block 3, a concave block 4 and a locking piece 5; a concave groove 40 is provided in the concave block 4, the connecting block 3 is embedded in the concave groove 40, one end of the concave block 4 is fixed to the material box 1, and an avoidance notch 41 is provided at the other end of the concave block 4, the width of the avoidance notch 41 is smaller than the width of the connecting block 3; a connecting rod mounting groove 30 is provided on the side of the connecting block 3 facing the cylinder 2, a connecting hole 31 is provided on the top of the connecting block 3, and the connecting rod mounting groove 30 and the connecting hole 31 are communicated with each other;

[0028] The cylinder 2 is provided with a connecting rod 21, which is used to drive the connecting rod 21 to extend or retract; a longitudinal through hole is provided at the proximal end of the driving end of the connecting rod 21; the driving end of the connecting rod 21 passes through the avoidance gap 41 and is inserted into the connecting rod mounting groove 30, and the locking member 5 passes through the connecting hole 31 and is detachably connected to the connecting rod 21 through the through hole.

[0029] The connection structure between the cartridge and the cylinder is applied to the cartridge filling device of a hydraulic press. The cartridge 1 and the connecting rod 21 of the cylinder 2 are connected via a connecting block 3 and a concave block 4, and the connecting rod 21 is fixed to the connecting rod mounting groove 30 of the connecting block 3 by a locking member 5. The connecting block 3 is fitted into the concave groove 40 of the concave block 4, and the width of the avoidance notch 41 is smaller than that of the connecting block 3, so that the connecting block 3 is constrained in the concave groove 40 of the concave block 4, achieving lateral constraint between the connecting block 3 and the concave block 4. The locking member 5 is used to fix the connecting rod 21 to the connecting rod mounting groove 30, achieving longitudinal constraint, firmly fixing the connecting rod 21, the connecting block 3 and the concave block 4 together, and enhancing the stability of the connection structure. When the cylinder drives the connecting rod 21 to move laterally, the connecting rod 21 can drive the connecting block 3 and the concave block 4 to move laterally, thereby transmitting the thrust of the cylinder to the cartridge 1, achieving the purpose of powder pressing.

[0030] The above structure replaces the existing connection method between the cylinder connecting rod and the connecting piece. The connecting rod 21 and the connecting block 3 are fixed by the locking piece 5, preventing the threads on the cylinder connecting rod from being damaged due to frequent relative movement. The cylinder connecting rod and the connecting block 3 are also prevented from slipping, thereby preventing the connecting rod from falling off the connecting device and extending the service life of the cylinder connecting rod. Moreover, since the problem of cylinder connecting rod slippage is solved, the cylinder does not need to be replaced frequently, which improves on-site production efficiency.

[0031] Specifically, the connecting hole 31 and the through hole are both provided with a first thread, the side wall of the locking member 5 is provided with a second thread adapted to the first thread, and the locking member 5 is threadedly connected to the connecting hole 31 and the through hole in sequence.

[0032] With the above structure, the locking piece 5 is threadedly connected to the connecting hole 31 and the through hole respectively, thereby fixing the connecting rod 21 and the connecting block 3, preventing the locking piece 5 from easily falling out of the connecting hole 31 and the through hole, and enhancing the stability of the connection structure.

[0033] Specifically, the locking member 5 is an M8 bolt.

[0034] In a specific embodiment of the present invention, the through hole and the connecting hole 31 are M8 internal threaded holes, and the locking member 5 is an M8 bolt.

[0035] Specifically, the concave groove 40 is provided with a limiting protrusion 42 on the side facing the cylinder 2, and the connecting block 3 is provided with a limiting groove 32 that is adapted to the position and shape of the limiting protrusion 42. When the connecting block 3 is embedded in the concave groove 40, the limiting protrusion 42 is embedded in the limiting groove 32.

[0036] With the above structure, when the connecting block 3 is engaged in the concave groove 40, the limiting protrusion 42 is engaged in the limiting groove 32, preventing the connecting block 3 and the concave block 4 from shaking left and right when moving laterally, thereby avoiding wear of the second thread of the locking member 5, the connecting hole 31 and the first thread of the through hole thread, and further causing slippage between the locking member 5 and the connecting hole 31 or the through hole.

[0037] Specifically, the limiting protrusion 42 is provided along the height direction of the concave groove 40 , and the cross section of the limiting protrusion 42 is dovetail-shaped; the limiting groove 32 is a dovetail groove.

[0038] With this structure, the inclined surface of the dovetail groove effectively secures the stopper protrusion 42 within the stopper groove 32, preventing the connection block 3 from moving during use. Furthermore, when the connection block 3 and the concave block 4 mate, the dovetail groove effectively disperses the shear force applied to the connecting components, thereby improving the stability and load-bearing capacity of the connection.

[0039] Specifically, the two side surfaces of the connection block 3 are respectively convex outwards and form curved surfaces 33 , and the shape of the concave groove 40 is adapted to the connection block 3 .

[0040] The four corners of a square-shaped interlocking block are susceptible to significant stress and are prone to damage or cracking when subjected to external forces. Because the two side surfaces of connecting block 3 are each convex and curved, they form a nearly cylindrical shape. A cylindrical interlocking block lacks sharp corners, allowing curved surface 33 to better align with concave groove 40 during interlocking. This also results in more even force distribution, reducing localized stress concentration and making it less susceptible to damage. This effectively avoids the sharp-cornered stress concentration that can occur with square-shaped interlocking blocks, especially during rotation or under load.

[0041] Specifically, a concave cavity 34 is provided on the outer periphery of the slot opening of the connecting rod installation slot 30 .

[0042] By adopting the above structure, the contact surface and friction force between the connecting rod 21 and the connecting block 3 can be changed, thereby enhancing the stability between the connecting parts and reducing loosening caused by vibration or external force.

[0043] The utility model also provides a hydraulic press, wherein a material box filling device of the hydraulic press adopts the above-mentioned connection structure between the material box and the cylinder.

[0044] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific embodiments of the present invention without inventive effort, and such equivalent variations or substitutions are encompassed within the scope of the claims of this application.

Claims

1. A connecting structure between a material box and a cylinder, comprising a material box and a cylinder, characterized in that: It also includes a connecting block, a concave block and a locking piece; the concave block is provided with a concave groove, the connecting block is embedded in the concave groove, one end of the concave block is fixed to the material box, and the other end of the concave block is provided with an avoidance gap, the width of the avoidance gap is smaller than the width of the connecting block; the connecting block is provided with a connecting rod mounting groove on the side facing the cylinder, and a connecting hole is provided on the top of the connecting block, and the connecting rod mounting groove and the connecting hole are connected to each other; The cylinder is provided with a connecting rod, which is used to drive the connecting rod to extend or retract; a longitudinally arranged through hole is provided at the proximal end of the driving end of the connecting rod; the driving end of the connecting rod passes through the avoidance gap and is inserted into the connecting rod installation groove, and the locking piece passes through the connecting hole and is detachably connected to the connecting rod through the through hole.

2. The connection structure between the material box and the cylinder according to claim 1, characterized in that: The connecting hole and the through hole are both provided with a first thread, the side wall of the locking member is provided with a second thread matched with the first thread, and the locking member is threadedly connected to the connecting hole and the through hole in sequence.

3. The connection structure between the material box and the cylinder according to claim 2, characterized in that: The locking piece is an M8 bolt.

4. The connection structure between a material box and a cylinder according to claim 1, characterized in that: The concave groove is provided with a limiting protrusion on the side facing the cylinder, and the connecting block is provided with a limiting groove that matches the position and shape of the limiting protrusion. When the connecting block is embedded in the concave groove, the limiting protrusion is embedded in the limiting groove.

5. The connection structure between a material box and a cylinder according to claim 4, characterized in that: The limiting protrusion is arranged along the height direction of the concave groove, and the cross section of the limiting protrusion is dovetail-shaped; the limiting groove is a dovetail groove.

6. The connection structure between a material box and a cylinder according to claim 4, characterized in that: The two side surfaces of the connecting block are respectively convex outwards and form curved surfaces respectively, and the shape of the concave groove is adapted to the connecting block.

7. The connection structure between a material box and a cylinder according to claim 1, characterized in that: A concave cavity is provided on the outer periphery of the notch of the connecting rod installation slot.

8. A hydraulic press, characterized in that: The material box filling device of the hydraulic press adopts the connection structure between the material box and the cylinder according to any one of claims 1 to 7.

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