Deep-cavity precision mold exhaust structure

Abstract

The utility model relates to the technical field of die design, and discloses a deep cavity precision die exhaust structure which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is located at the lower end of the main body mechanism, the main body mechanism comprises a machine frame, a lower die base and a female die, the lower die base is fixedly installed in the machine frame, and the female die is fixedly installed in the machine frame. The female die is fixedly arranged at the upper end of the lower die base, and the main body mechanism further comprises an exhaust hole, an upper die base, a male die, a hydraulic press and an exhaust assembly. According to the deep-cavity precise die exhaust structure, through installation of the main body mechanism, in the die stamping process, when a male die is pressed downwards, the exhaust assembly is started, an air pump pumps away air in a die through an air suction pipe, and when the male die is pressed downwards, residual air is exhausted through exhaust holes formed in the four faces in a female die under the action of pressure; the exhaust structure of the deep-cavity precision mold can effectively exhaust air completely, local residual air in the mold is avoided, the exhaust effect is better, the use effect is improved, and the practicability of the exhaust structure of the deep-cavity precision mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold design, in particular to a deep cavity precision mold exhaust structure. Background Art

[0002] Parts processing refers to the process of changing the shape, size or performance of a workpiece through a mechanical device. It can be divided into cutting processing and pressure processing according to the difference in processing methods. In the process of parts processing, any change in the shape, size, position and properties of the production object to make it a finished product or semi-finished product belongs to the category of parts processing. Its process can be divided into casting, forging, stamping, welding, machining, assembly and other processes. In the process of parts processing, some parts need to be processed by stamping, which requires the use of stamping dies. Stamping dies are a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the required parts. Therefore, stamping dies are an indispensable type of device in the process of parts processing.

[0003] The existing CN207343585U patent document proposes an exhaust structure of a precision stamping mold, including a punch and a first air hole arranged on the punch, one end of the first air hole is connected to an air groove arranged on a pad, the outside of the air groove is connected to a compressed air pipeline, and a flow control valve for adjusting the flow of compressed air is also installed; the punch, the die and the insert together form a cavity, the insert is processed with a second air hole facing the first air hole, and the second air hole penetrates along the central axis of the insert; a cavity is arranged between the bottom of the insert and the lower die seat, and the insert is fixed to the lower die plate through a support seat. The device improves the mold structure of cylindrical parts that need to be drawn multiple times, mainly through the setting of the exhaust structure and the adjustment of the gas flow rate, to achieve exhaust and pressure relief during punch stamping, and air intake and pressurization during the return stroke of the punch, thereby reducing the pressure of residual gas between the punch and the workpiece during the stamping process and facilitating the demolding of the workpiece.

[0004] However, the prior art patent technology with publication number CN207343585U may not be fully exhausted during use, resulting in local residual gas, which reduces the effect of use. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide a deep cavity precision mold exhaust structure to solve the problem in the above background technology that incomplete exhaust may result in local residual gas and reduce the effect of use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deep cavity precision mold exhaust structure, comprising a main mechanism and an auxiliary mechanism, wherein the auxiliary mechanism is located at the lower end of the main mechanism, and the main mechanism comprises a frame, a lower die base and a concave die, wherein the lower die base is fixedly installed inside the frame, and the concave die is fixedly arranged at the upper end of the lower die base;

[0009] Preferably, the main structure also includes an exhaust hole, an upper die base, a punch, a hydraulic pressure device and an exhaust assembly, the exhaust hole is fixedly arranged inside the die, the upper die base is movably connected to the upper end of the lower die base, the punch is fixedly mounted on the lower end of the upper die base, the hydraulic pressure device is fixedly mounted on the upper end of the upper die base, and the exhaust assembly is fixedly mounted on the upper end of the frame. During the mold stamping process, when the punch is pressed down, the exhaust assembly is started, so that the vacuum pump draws out the air in the mold through the exhaust pipe. When the punch is pressed down, the residual air is discharged through the exhaust holes arranged on four sides of the die under the action of pressure, which can effectively exhaust the air and avoid local residual air in the mold. The exhaust effect is better, thereby improving the use effect.

[0010] Preferably, the exhaust assembly includes a fixing seat, an air pump and an air extraction pipe. The fixing seat is fixedly mounted on the upper end of the frame. The setting of the fixing seat facilitates the fixing of the air extraction pump.

[0011] Preferably, the vacuum pump is fixedly mounted on the upper end of the fixed seat, the vacuum pipe is fixedly mounted on the lower end of the vacuum pump, the vacuum pipe is located inside the punch, and the vacuum pump is started, and most of the air in the mold can be sucked out through the vacuum pump and the vacuum pipe.

[0012] Preferably, the auxiliary mechanism comprises a shock absorbing box, a damper, a shock absorbing spring, a load-bearing plate and a support column. The shock absorbing box is fixedly installed inside the frame, and the shock absorbing parts are conveniently installed inside the shock absorbing box.

[0013] Preferably, the damper is fixedly mounted inside the shock absorbing box, and the shock absorbing spring is fixedly mounted on the outside of the damper. Through the connection of the damper, shock absorbing spring, load-bearing plate and support column, part of the vibration can be buffered during mold stamping to prevent the mold from being subjected to excessive force, thereby causing damage.

[0014] Preferably, the load-bearing plate is fixedly mounted on the upper end of the shock-absorbing spring, the support column is fixedly mounted on the upper end of the load-bearing plate, the support column is located at the lower end of the lower mold base, and the mold and the shock-absorbing part can be connected together through the support column.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The deep cavity precision mold exhaust structure, through the installation of the main mechanism, realizes that during the mold stamping process, when the punch is pressed down, the exhaust component is started, so that the vacuum pump extracts the air in the mold through the exhaust pipe. When the punch is pressed down, the residual air is discharged through the exhaust holes arranged on the four sides of the die under the action of pressure, which can effectively exhaust the air and avoid local residual air in the mold. The exhaust effect is better, the use effect is improved, and the practicality of the deep cavity precision mold exhaust structure is improved;

[0017] 2. The deep cavity precision mold exhaust structure realizes the connection through the damper and the shock-absorbing spring by installing the auxiliary mechanism. It can buffer part of the vibration during mold stamping to avoid excessive force on the mold, which may cause damage, thereby improving the shock-absorbing effect of the deep cavity precision mold exhaust structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the main mechanism of the utility model;

[0021] Figure 4 It is a schematic diagram of the enlarged structure of the auxiliary mechanism of the utility model.

[0022] In the figure: 1. Main mechanism; 101. Frame; 102. Lower die base; 103. Concave die; 104. Exhaust hole; 105. Upper die base; 106. Punch; 107. Hydraulic press; 108. Exhaust assembly; 1081. Fixed seat; 1082. Air pump; 1083. Exhaust pipe; 2. Auxiliary mechanism; 201. Shock-absorbing box; 202. Damper; 203. Shock-absorbing spring; 204. Load-bearing plate; 205. Support column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4The utility model provides a technical solution: a deep cavity precision mold exhaust structure, including a main mechanism 1 and an auxiliary mechanism 2, the auxiliary mechanism 2 is located at the lower end of the main mechanism 1, the main mechanism 1 includes a frame 101, a lower die base 102 and a die 103, the lower die base 102 is fixedly installed inside the frame 101, and the die 103 is fixedly arranged at the upper end of the lower die base 102.

[0025] The main mechanism 1 also includes an exhaust hole 104, an upper die base 105, a punch 106, a hydraulic press 107 and an exhaust assembly 108. The exhaust hole 104 is fixedly arranged inside the die 103. The upper die base 105 is movably connected to the upper end of the lower die base 102. The punch 106 is fixedly installed at the lower end of the upper die base 105. The hydraulic press 107 is fixedly installed at the upper end of the upper die base 105. The exhaust assembly 108 is fixedly installed at the upper end of the frame 101. The exhaust assembly 108 includes a fixed seat 1081, an air pump 1082 and an air extraction pipe 1083. The fixed seat 1081 is fixedly installed at the upper end of the frame 101. The air pump 1082 and an air extraction pipe 1083 1082 is fixedly installed on the upper end of the fixed base 1081, and the exhaust pipe 1083 is fixedly installed on the lower end of the exhaust pump 1082. The exhaust pipe 1083 is located inside the punch 106. During the mold stamping process, the upper mold base 105 is pressed down by the hydraulic press 107. When the punch 106 is pressed down, the exhaust component 108 is started, so that the exhaust pump 1082 extracts the air in the mold through the exhaust pipe 1083. When the punch 106 is pressed down, the residual air is discharged through the exhaust holes 104 set on four sides of the die 103 under the action of pressure, which can effectively exhaust the air and avoid local residual air in the mold.

[0026] The auxiliary mechanism 2 includes a shock absorbing box 201, a damper 202, a shock absorbing spring 203, a load-bearing plate 204 and a support column 205. The shock absorbing box 201 is fixedly installed inside the frame 101, the damper 202 is fixedly installed inside the shock absorbing box 201, the shock absorbing spring 203 is fixedly installed on the outside of the damper 202, the load-bearing plate 204 is fixedly installed on the upper end of the shock absorbing spring 203, the support column 205 is fixedly installed on the upper end of the load-bearing plate 204, and the support column 205 is located at the lower end of the lower mold base 102. Through the connection of the damper 202, the shock absorbing spring 203, the load-bearing plate 204 and the support column 205, part of the vibration can be buffered during mold stamping to prevent the mold from being subjected to excessive force, thereby causing damage.

[0027] Working principle: During the die stamping process, the upper die base 105 is pressed down by the hydraulic press 107. When the punch 106 is pressed down, the exhaust assembly 108 is started, so that the vacuum pump 1082 extracts the air in the die through the exhaust pipe 1083. When the punch 106 is pressed down, the remaining air is discharged through the exhaust holes 104 arranged on the four sides of the die 103 under the action of pressure, which can effectively exhaust the air and avoid local residual air in the die. Through the connection of the damper 202, the shock-absorbing spring 203, the load-bearing plate 204 and the support column 205, some vibrations can be buffered during die stamping to avoid excessive force on the die, thereby preventing damage.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A deep cavity precision mold exhaust structure, comprising a main mechanism (1) and an auxiliary mechanism (2), characterized in that: The auxiliary mechanism (2) is located at the lower end of the main mechanism (1); the main mechanism (1) comprises a frame (101), a lower die base (102) and a concave die (103); the lower die base (102) is fixedly mounted inside the frame (101); and the concave die (103) is fixedly arranged at the upper end of the lower die base (102); The main body mechanism (1) further comprises an exhaust hole (104), an upper die base (105), a punch (106), a hydraulic press (107) and an exhaust assembly (108); the exhaust hole (104) is fixedly arranged inside the die (103); the upper die base (105) is movably connected to the upper end of the lower die base (102); the punch (106) is fixedly mounted on the lower end of the upper die base (105); the hydraulic press (107) is fixedly mounted on the upper end of the upper die base (105); and the exhaust assembly (108) is fixedly mounted on the upper end of the frame (101).

2. A deep cavity precision mold exhaust structure according to claim 1, characterized in that: The exhaust assembly (108) comprises a fixing seat (1081), an exhaust pump (1082) and an exhaust pipe (1083); the fixing seat (1081) is fixedly mounted on the upper end of the frame (101).

3. A deep cavity precision mold exhaust structure according to claim 2, characterized in that: The vacuum pump (1082) is fixedly mounted on the upper end of the fixing seat (1081), and the vacuum pipe (1083) is fixedly mounted on the lower end of the vacuum pump (1082). The vacuum pipe (1083) is located inside the male mold (106).

4. A deep cavity precision mold exhaust structure according to claim 3, characterized in that: The auxiliary mechanism (2) comprises a shock absorbing box (201), a damper (202), a shock absorbing spring (203), a load-bearing plate (204) and a support column (205); the shock absorbing box (201) is fixedly mounted inside the frame (101).

5. The deep cavity precision mold exhaust structure according to claim 4 is characterized in that: The damper (202) is fixedly mounted inside the shock absorbing box (201), and the shock absorbing spring (203) is fixedly mounted outside the damper (202).

6. A deep cavity precision mold exhaust structure according to claim 5, characterized in that: The load-bearing plate (204) is fixedly mounted on the upper end of the shock-absorbing spring (203), and the support column (205) is fixedly mounted on the upper end of the load-bearing plate (204). The support column (205) is located at the lower end of the lower die base (102).

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