Crank press with overload protection

Abstract

The utility model relates to the technical field of crank press, and disclose a kind of crank press with overload protection, including press main seat, press main seat top is fixedly connected with press shell, press shell surface is equipped with motor overheat protection mechanism and pressure overload protection mechanism, pressure overload protection mechanism contains installation port, pressure sensor, external connecting seat, connecting vertical board, electric control telescopic column and friction plate, can pass through pressure sensor real-time detection workbench pressure, when overload, electric control telescopic column drives friction plate brake main pulley, reduce or stop pressure output, motor overheat protection mechanism includes main control motor, motor output shaft, external protection frame, temperature sensor, first and second mounting frame, fan and dust screen, can pass through temperature sensor monitoring main control motor temperature, when overheating, start fan cooling, prevent motor damage, the design of the device can effectively improve the use cycle and service life of crank press.

Description

Technical Field

[0001] This utility model relates to the field of crank press technology, specifically a crank press with overload protection. Background Technology

[0002] Crank presses are widely used in the machining field, and can perform shearing, punching and blanking processes on various materials. However, in actual production, overload often occurs due to factors such as improper selection of press, incorrect mold adjustment, and uneven blank thickness, leading to problems such as connecting rod thread damage, crankshaft breakage, and machine body deformation, resulting in serious production losses. Existing overload protection devices are insufficient in terms of accuracy and stability, and urgently need to be improved.

[0003] The existing device may not have a pressure sensor that contacts the bottom of the workbench, so it cannot sense the pressure on the workbench in real time. This makes it impossible to detect pressure overload problems in time. When pressure overload occurs, the existing device does not have a suitable quick braking device to brake the device in an emergency, thus failing to reduce or stop the pressure output. This will affect the normal use of the device and may even threaten the safety of the operators, and the safety of the workers cannot be effectively guaranteed. Utility Model Content

[0004] The purpose of this invention is to provide a crank press with overload protection to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crank press with overload protection, comprising a press main seat, a press housing fixedly connected to the top of the press main seat, a motor overheat protection mechanism provided on the surface of the press housing, and a pressure overload protection mechanism provided on the surface of the press housing. The pressure overload protection mechanism includes mounting ports located at the bottom left and right ends of the inner front of the press housing. A pressure sensor is installed inside the mounting port. A pulley housing is located at the top left end of the press housing. An external connecting seat is installed at the bottom left side of the pulley housing. A connecting vertical plate is fixedly connected to the top of the external connecting seat. An electrically controlled telescopic column is installed on the right side of the connecting vertical plate. A friction plate is installed at the right end of the electrically controlled telescopic column. When the press is operating, the pressure overload protection mechanism can effectively detect the pressure of the device. Through the pressure sensor in contact with the bottom of the worktable, the pressure on the worktable can be sensed in real time. When the pressure sensor detects a pressure surge, it immediately transmits a signal. The electrically controlled telescopic column controls the friction plate to press against both ends of the main pulley, generating friction braking on the main pulley, thereby reducing or stopping the pressure output, preventing damage to the press components due to pressure overload, and ensuring the normal service life and operational safety of the press.

[0006] Preferably, a main pulley is provided inside the pulley housing, and electrically controlled telescopic columns and friction plates are provided at both ends of the main pulley, which are symmetrically distributed on the left and right sides of the main pulley.

[0007] Preferably, a worktable is installed at the bottom of the inner end of the front of the press housing, and the mounting port and pressure sensor are both located on the left and right sides of the bottom of the worktable.

[0008] Preferably, the motor overheat protection mechanism includes a main control motor, which is mounted on the top left side of the back of the press housing. A motor output shaft is located at the left end of the main control motor. An external protective frame is mounted on the top left side of the back of the press housing, with a temperature sensor installed inside the frame. A first mounting frame is mounted on the back of the external protective frame, containing a first fan and a first dust filter. A second mounting frame is mounted on the right side of the external protective frame, containing a second fan and a second dust filter. The motor overheat protection mechanism can detect the temperature of the main control motor through the temperature sensor, enabling timely sensing of temperature changes. When the temperature is too high, the first and second fans will exhaust air to dissipate heat, accelerating airflow around the main control motor, reducing its temperature, preventing damage due to overheating, and ensuring its normal operation. This mechanism effectively provides overheat and overload protection for the device, preventing damage due to overheating.

[0009] Preferably, the main control motor is designed as a detachable structure, and the temperature sensor faces the main control motor.

[0010] Preferably, the motor overheat protection mechanism includes a motor output shaft, a transmission belt connecting the motor output shaft and the main pulley, a coupling mounted on the right end of the main pulley, a pinion fixedly connected to the right end of the coupling, a large gear mounted on the right end of the press housing, the pinion and large gear meshing with each other, gear housings mounted on the outer ends of the pinion and large gear, a crankshaft mounted on the left side of the large gear, a slider mounted on the surface of the crankshaft, slide rails fixedly connected to the left and right ends of the inner front of the press housing, connecting seats slidably connected to the surface of the slide rails, the connecting seats mounted on the bottom of the slider, and a pressure block mounted on the bottom of the connecting seats.

[0011] Compared with the prior art, this utility model provides a crank press with overload protection, which has the following beneficial effects: This crank press with overload protection is equipped with a pressure overload protection mechanism. When the press is working, the pressure overload protection mechanism can effectively detect the pressure of the device. Through the pressure sensor in contact with the bottom of the worktable, the pressure on the worktable can be sensed in real time. When the pressure sensor detects that the device is under pressure, it will immediately transmit a signal. The electrically controlled telescopic column will control the friction plate to press against both ends of the main pulley, generating friction braking on the main pulley, thereby reducing or stopping the pressure output, avoiding damage to the press components due to pressure overload, and ensuring the normal service life and working safety of the press.

[0012] This crank press with overload protection is equipped with a motor overheat protection mechanism. The mechanism can detect the temperature of the main control motor through a temperature sensor, and can promptly sense changes in the temperature of the main control motor. When the temperature is too high, the first and second air fans will exhaust air to dissipate heat, accelerate the air circulation around the main control motor, reduce the temperature of the main control motor, prevent the main control motor from being damaged due to overheating, and ensure the normal operation of the main control motor. This mechanism can effectively provide overheat and overload protection for the device, preventing damage due to overheating. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the motor overheat protection mechanism of this utility model. Figure 3 This is a schematic diagram of the main control motor of this utility model. Figure 4 This is a schematic diagram of the structural pressure overload protection mechanism of this utility model; Figure 5 This is a schematic diagram of the main pulley structure of this utility model; Figure 6 This is a schematic diagram of the large gear structure of this utility model.

[0014] In the diagram: 1. Press main seat; 2. Press housing; 3. Motor overheat protection mechanism; 31. Main control motor; 32. Motor output shaft; 33. External protective frame; 34. Temperature sensor; 35. First mounting frame; 36. First air fan; 37. First dustproof net; 38. Second mounting frame; 39. Second air fan; 301. Second dustproof net; 4. Pressure overload protection mechanism; 41. Mounting port; 42. Pressure sensor; 43. External connecting seat; 44. Connecting vertical plate; 45. Electrically controlled telescopic column; 46. Friction plate; 5. Main pulley; 51. Pulley housing; 6. Transmission belt; 7. Coupling; 8. Pinion; 81. Gear housing; 9. Large gear; 91. Crankshaft; 92. Sliding block; 93. Slide rail; 94. Connecting seat; 95. Pressure block; 96. Worktable. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] This utility model provides the following technical solution: Example 1 Please see Figure 1-6 A crank press with overload protection includes a press base 1, a press housing 2 fixedly connected to the top of the press base 1, a motor overheat protection mechanism 3 and a pressure overload protection mechanism 4 on the surface of the press housing 2. The pressure overload protection mechanism 4 includes an installation port 41, which is located at the bottom left and right ends of the inner front of the press housing 2. A pressure sensor 42 is installed inside the installation port 41. A pulley housing 51 is located at the top left end of the press housing 2. An external connecting seat 43 is installed at the bottom left side of the pulley housing 51. A connecting vertical plate 44 is fixedly connected to the top of the external connecting seat 43. An electrically controlled telescopic column 45 is installed on the right side of the connecting vertical plate 44. A friction plate 46 is installed at the right end of the electrically controlled telescopic column 45. When the press is working, the pressure overload protection mechanism 4 can effectively detect the pressure of the device. Through the pressure sensor 42, which is in contact with the bottom end of the worktable 96, the pressure on the worktable can be sensed in real time. When the pressure sensor 42 detects that the device is under pressure, it will immediately transmit a signal. The electrically controlled telescopic column 45 will control the friction plate 46 to press against both ends of the main pulley 5, thereby generating friction braking on the main pulley 5, thereby reducing or stopping the pressure output, avoiding damage to the parts of the press due to pressure overload, and ensuring the normal service life and working safety of the press. Inside the pulley housing 51, there is a main pulley 5. At both ends of the main pulley 5, there are electrically controlled telescopic columns 45 and friction plates 46, which are symmetrically distributed on the left and right sides of the main pulley 5. A worktable 96 is installed at the bottom of the inner end of the front of the press housing 2. The mounting port 41 and the pressure sensor 42 are both located on the left and right sides of the bottom of the worktable 96.

[0018] Example 2 Please see Figure 1-6 Furthermore, based on Embodiment 1, the motor overheat protection mechanism 3 further includes a main control motor 31, which is mounted on the top left side of the back of the press housing 2. A motor output shaft 32 is located at the left end of the main control motor 31. An external protective frame 33 is mounted on the top left side of the back of the press housing 2. A temperature sensor 34 is installed inside the external protective frame 33. A first mounting frame 35 is mounted on the back of the external protective frame 33. A first air fan 36 is installed inside the first mounting frame 35. A first dustproof net 37 is mounted on the back of the first mounting frame 35. A second mounting frame 38 is mounted on the right side of the external protective frame 33. The second fan 39 is installed inside the second mounting frame 38, and the second dustproof net 301 is installed on the right side of the second mounting frame 38. The motor overheat protection mechanism 3 can detect the temperature of the main control motor 31 through the temperature sensor 34, and can sense the temperature change of the main control motor 31 in a timely manner. When the temperature is too high, the first fan 36 and the second fan 39 will exhaust air to dissipate heat, accelerate the air circulation around the main control motor 31, reduce the temperature of the main control motor 31, prevent the main control motor 31 from being damaged due to overheating, and ensure the normal operation of the main control motor 31. This mechanism can effectively provide overheat and overload protection for the device and prevent the device from being damaged due to overheating. The main control motor 31 is designed as a detachable structure, and the temperature sensor 34 faces the main control motor 31. The motor overheat protection mechanism 3 includes a motor output shaft 32, a transmission belt 6 connecting the motor output shaft 32 and the main pulley 5, a coupling 7 installed at the right end of the main pulley 5, a pinion 8 fixedly connected to the right end of the coupling 7, a large gear 9 installed at the right end of the press housing 2, the pinion 8 and the large gear 9 meshing with each other, a gear housing 81 installed at the outer ends of the pinion 8 and the large gear 9, a crankshaft 91 installed on the left side of the large gear 9, a slider body 92 installed on the surface of the crankshaft 91, slide rails 93 fixedly connected to the left and right ends of the inner front of the press housing 2, a connecting seat 94 slidably connected to the surface of the slide rails 93, the connecting seat 94 installed at the bottom of the slider body 92, and a pressure block 95 installed at the bottom of the connecting seat 94.

[0019] In actual operation, when this device is used, the workpiece is placed on top of the worktable 96. The starting device drives the motor output shaft 32 to rotate through the main control motor 31, drives the main pulley 5 to rotate through the transmission belt 6, drives the pinion 8 and the large gear 9 to rotate together through the coupling 7 at the other end of the main pulley 5, drives the crankshaft 91 to work, thereby operating the connecting seat 94 to move up and down on the surface of the slide rail 93, and processes the workpiece on the surface of the worktable 96 through the pressure block 95. When the press is working, the pressure overload protection mechanism 4 can effectively detect the pressure of the device. Through the pressure sensor 42 which is in contact with the bottom of the worktable 96, the pressure on the worktable can be sensed in real time. When the pressure sensor 42 detects that the device is under pressure, it will immediately transmit the signal. The electric telescopic column 45 will control the friction plate 46 to press against both ends of the main pulley 5, thereby generating friction braking on the main pulley 5, thereby reducing or stopping the pressure output, avoiding damage to the parts of the press due to pressure overload, and ensuring the normal service life and working safety of the press. The motor overheat protection mechanism 3 can detect the temperature of the main control motor 31 through the temperature sensor 34, and can promptly sense the temperature change of the main control motor 31. When the temperature is too high, the first air fan 36 and the second air fan 39 will exhaust air to dissipate heat, accelerate the air circulation around the main control motor 31, reduce the temperature of the main control motor 31, prevent the main control motor 31 from being damaged due to overheating, and ensure the normal operation of the main control motor 31. This mechanism can effectively provide overheat and overload protection for the device and prevent the device from being damaged due to overheating.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A crank press with overload protection, comprising a press main seat (1), characterized in that: The main seat (1) of the press is fixedly connected to the top of the press housing (2), the surface of the press housing (2) is provided with a motor overheat protection mechanism (3), and the surface of the press housing (2) is provided with a pressure overload protection mechanism (4). The pressure overload protection mechanism (4) includes an installation port (41), which is located at the bottom left and right ends of the front inner end of the press housing (2). A pressure sensor (42) is installed inside the installation port (41). A pulley housing (51) is provided at the top left end of the press housing (2). An external connecting seat (43) is installed at the bottom left side of the pulley housing (51). A connecting vertical plate (44) is fixedly connected to the top of the external connecting seat (43). An electrically controlled telescopic column (45) is installed on the right side of the connecting vertical plate (44). A friction plate (46) is installed at the right end of the electrically controlled telescopic column (45).

2. A crank press with overload protection according to claim 1, characterized in that: The pulley housing (51) is provided with a main pulley (5). The main pulley (5) is provided with electrically controlled telescopic columns (45) and friction plates (46) at both ends of the left and right sides, which are symmetrically distributed on the left and right sides of the main pulley (5).

3. A crank press with overload protection according to claim 1, characterized in that: A workbench (96) is installed at the bottom of the inner end of the front of the press housing (2). The mounting port (41) and the pressure sensor (42) are both located on the left and right sides of the bottom of the workbench (96).

4. A crank press with overload protection according to claim 1, characterized in that: The motor overheat protection mechanism (3) includes a main control motor (31), which is installed on the top left side of the back of the press housing (2). The main control motor (31) has a motor output shaft (32) at the left end. An external protective frame (33) is installed on the top left side of the back of the press housing (2). A temperature sensor (34) is installed inside the external protective frame (33). A first mounting frame (35) is installed on the back of the external protective frame (33). A first air fan (36) is installed inside the first mounting frame (35). A first dustproof net (37) is installed on the back of the first mounting frame (35). A second mounting frame (38) is installed on the right side of the external protective frame (33). A second air fan (39) is installed inside the second mounting frame (38). A second dustproof net (301) is installed on the right side of the second mounting frame (38).

5. A crank press with overload protection according to claim 4, characterized in that: The main control motor (31) is designed as a detachable structure, and the temperature sensor (34) faces the main control motor (31).

6. A crank press with overload protection according to claim 1, characterized in that: The motor overheat protection mechanism (3) includes a motor output shaft (32), a transmission belt (6) is connected between the motor output shaft (32) and the main pulley (5), a coupling (7) is installed on the right end of the main pulley (5), a small gear (8) is fixedly connected to the right end of the coupling (7), a large gear (9) is installed on the right end of the press housing (2), the small gear (8) and the large gear (9) mesh with each other, a gear housing (81) is installed on the outer end of the small gear (8) and the large gear (9), a crankshaft (91) is installed on the left side of the large gear (9), a slider body (92) is installed on the surface of the crankshaft (91), a slide rail (93) is fixedly connected to the left and right ends of the front inner end of the press housing (2), a connecting seat (94) is slidably connected to the surface of the slide rail (93), the connecting seat (94) is installed at the bottom of the slider body (92), and a pressure block (95) is installed at the bottom of the connecting seat (94).

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