A press device

Abstract

The utility model discloses a kind of pressing device, including body mechanism, driving mechanism and pressure head mechanism, the body mechanism includes rack and workstation, and the workstation is fixedly connected on rack;The driving mechanism includes driving device, and the driving device is installed on the top wallboard of rack;The pressure head mechanism includes connecting plate, sensor unit, buffer unit, pressure head mounting plate and pressure head.The utility model eliminates the centering error and rigid impact in pressing process by sensor unit and buffer unit, realizes the flexible, stable and automatic centering and pressing of workpiece.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressing devices, and specifically relates to a pressing device. Background Technology

[0002] As a common industrial equipment, pressing devices are widely used to precisely assemble two or more workpieces through interference fits or snap-fits.

[0003] Existing traditional pressing devices mostly adopt a simple structure in which the pressing head is directly driven by a cylinder or hydraulic cylinder. This leads to obvious technical defects in their operation: on the one hand, due to the lack of precise guidance and automatic self-aligning mechanism, the pressing process is prone to eccentric force, causing uneven pressure on the workpiece, tilting or jamming, and even damage to the workpiece; on the other hand, the pressing process is a rigid impact, lacking an effective buffer and pressure control mechanism, which not only makes it difficult to ensure the consistency of pressing quality, but also poses a risk of crushing to precision and fragile workpieces. At the same time, the pressing head and positioning mold are usually fixed designs, making changes and adjustments cumbersome, and resulting in low overall adaptability and production efficiency.

[0004] Therefore, it is necessary to provide a pressing device to address the aforementioned technical problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a pressing device that has a simple structure, good centering, stable pressing, and easy replacement of the pressing head and positioning mold.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides a pressing device, including a main body mechanism, a driving mechanism, and a pressing head mechanism. The main body mechanism includes a frame and a worktable, with the worktable fixedly connected to the frame. The driving mechanism includes a driving device mounted on the top wall panel of the frame. The pressing head mechanism includes a connecting plate, a sensor unit, a buffer unit, a pressing head mounting plate, and a pressing head. The connecting plate is fixedly connected to the output end of the driving device. The pressing head mounting plate is mounted below the connecting plate with its center line coinciding with the center line of the connecting plate. The sensor unit and the buffer unit are both mounted between the connecting plate and the pressing head mounting plate. The pressing head is detachably mounted below the pressing head mounting plate.

[0008] In one or more embodiments of the present invention, the main body mechanism further includes a positioning mold mounted on the worktable, the positioning mold being coaxially mounted below the pressure head.

[0009] In one or more embodiments of this utility model, a pair of mounting ears are fixedly connected to the bottom side wall of the positioning mold, and a fixing screw is installed between the pair of mounting ears and the worktable.

[0010] In one or more embodiments of this utility model, the driving device is one of a ball screw mechanism driven by a servo motor, a cylinder, or a servo electric cylinder.

[0011] In one or more embodiments of this utility model, the output end of the driving device is a piston rod coaxially arranged with the center line of the top wall panel of the frame, and the lower end of the piston rod is fixedly connected to the connecting plate.

[0012] In one or more embodiments of this utility model, the sensor unit includes a floating structure mounted on the lower end of the connecting plate and a pressure sensor mounted on the lower end of the floating structure, wherein the lower end of the pressure sensor is fixedly connected to the pressure head mounting plate.

[0013] In one or more embodiments of this utility model, the buffer unit includes a pair of buffer guide shafts disposed on both sides of the pressure sensor and a pair of buffer springs sleeved on the pair of buffer guide shafts. The lower end of the buffer guide shaft is fixedly connected to the pressure head mounting plate, and the upper end of the buffer guide shaft slides through the top of the connecting plate.

[0014] In one or more embodiments of this utility model, the lower end of the buffer spring abuts against the pressure head mounting plate, and the upper end of the buffer spring abuts against the bottom of the connecting plate.

[0015] In one or more embodiments of this utility model, a pair of slide rails are provided on the inner sidewalls of the two side panels of the frame, and a pair of sliders are fixedly connected to the sidewalls of the left and right sides of the connecting plate, and the pair of sliders are respectively slidably connected to the pair of slide rails.

[0016] In one or more embodiments of this utility model, the bottom of the pressure head mounting plate is provided with a standard interface coaxial with the center line, and the standard connector on the pressure head is screwed into the standard interface.

[0017] Compared with existing technologies, this invention eliminates centering errors and rigid impacts during the pressing process through sensor units and buffer units, achieving flexible, stable, and automatic centering pressing of the workpiece; the integrated pressure sensor and control system enables real-time monitoring of the pressing force, ensuring consistent pressing quality; the quick-change design of the pressure head and positioning mold improves the equipment's adaptability to different products; the device has a simple and compact structure, solving the problems of easy workpiece damage, inaccurate pressure control, and poor versatility of traditional pressing methods. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of a pressing device according to an embodiment of the present invention;

[0020] Figure 2 This is a perspective view of a pressing device according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of a pressing device according to an embodiment of the present invention;

[0022] Figure 4 This is a cross-sectional view of a pressing device in one embodiment of the present invention.

[0023] Explanation of key figure labels:

[0024] 1-Main body mechanism, 11-Frame, 12-Workbench, 13-Positioning mold, 14-Mounting ear, 15-Fixing screw, 2-Drive mechanism, 21-Drive device, 22-Piston rod, 3-Pressure head mechanism, 31-Connecting plate, 32-Floating joint, 33-Pressure sensor, 34-Pressure head mounting plate, 35-Buffer guide shaft, 36-Buffer spring, 37-Pressure head, 38-Slide rail, 39-Slider, 310-Standard joint. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0026] like Figures 1-4As shown, a pressing device according to one embodiment of the present invention includes a main body mechanism 1, a driving mechanism 2, and a pressing head mechanism 3. The main body mechanism 1 includes a frame 11 and a worktable 12, with the worktable 12 fixedly connected to the frame 11. The driving mechanism 2 includes a driving device 21, which is mounted on the top wall panel of the frame 11. The pressing head mechanism 3 includes a connecting plate 31, a sensor unit, a buffer unit, a pressing head mounting plate 34, and a pressing head 37. The connecting plate 31 is fixedly connected to the output end of the driving device 21, and the pressing head mounting plate 34 is mounted below the connecting plate 31 with its center line coinciding with the center line of the connecting plate 31. The sensor unit and the buffer unit are both mounted between the connecting plate 31 and the pressing head mounting plate 34, and the pressing head 37 is detachably mounted below the pressing head mounting plate 34.

[0027] The working principle of this pressing device is as follows: the drive device 21 pushes the connecting plate 31 downwards in a vertical direction, so as to drive the entire pressing head mechanism 3 to approach the workpiece; when the pressing head 37 contacts the workpiece, the drive device 21 continues to move downwards. At this time, the pressing head mounting plate 34 is subjected to a reverse force and begins to move upwards relative to the connecting plate 31 to compress the buffer unit. This process converts the rigid displacement of the drive device 21 into flexible pressure, thereby achieving smooth pressing. At the same time, the sensor unit automatically compensates for possible alignment errors to ensure that the pressure is applied vertically, while monitoring and feeding back the magnitude of the pressing force in real time; when the pressure reaches the preset value, the control system controls the drive device 21 to maintain pressure or return, thereby completing a precise, controllable and flexible pressing operation.

[0028] like Figures 1-4 As shown, the main body mechanism 1 also includes a positioning mold 13 mounted on the worktable 12. The positioning mold 13 is coaxially mounted below the pressure head 37 and is used to limit the position of the workpiece. The coaxial arrangement of the positioning mold 13 and the pressure head 37 facilitates the pressure head 37 to press the workpiece placed in the positioning mold 13.

[0029] like Figures 1-4 As shown, a pair of mounting ears 14 are fixedly connected to the bottom side wall of the positioning mold 13, and a fixing screw 15 is installed between the pair of mounting ears 14 and the worktable 12. In order to facilitate the placement of different workpieces by the positioning mold 13, the fixing screw 15 facilitates the disassembly and assembly of the positioning mold 13, making it easy to replace during use.

[0030] Preferably, the drive device 21 is one of a ball screw mechanism driven by a servo motor, a cylinder or a servo electric cylinder, so that the drive device 21 is a precision-controlled driver that can achieve precise control of the pressing speed and position.

[0031] like Figure 4As shown, the output end of the drive device 21 is a piston rod 22 coaxially arranged with the center line of the top wall panel of the frame 11. The lower end of the piston rod 22 is fixedly connected to the connecting plate 31, so that when the drive device 21 drives the piston rod 22 to move vertically, the piston rod 22 can drive the connecting plate 31 to move vertically.

[0032] like Figures 1-4 As shown, the sensor unit includes a floating structure 32 mounted on the lower end of the connecting plate 31 and a pressure sensor 33 mounted on the lower end of the floating structure 32. The lower end of the pressure sensor 33 is fixedly connected to the pressure head mounting plate 34. The floating structure 32 provides a small oscillation and compensation space, which can eliminate the small coaxiality installation error between the drive mechanism 2 and the pressure head 37, avoid dead contact, thereby protecting the equipment, reducing wear, and making pressure transmission purer. The pressure sensor 33 is a key component for achieving precise pressing and process control. It can feed back the pressure signal to the control system in real time to achieve precise pressure control, overload protection, and quality monitoring.

[0033] like Figures 1-4 As shown, the buffer unit includes a pair of buffer guide shafts 35 disposed on both sides of the pressure sensor 33 and a pair of buffer springs 36 sleeved on the pair of buffer guide shafts 35. The lower end of the buffer guide shaft 35 is fixedly connected to the pressure head mounting plate 34, and the upper end of the buffer guide shaft 35 slides through the top of the connecting plate 31. The pair of buffer guide shafts 35 provide precise guidance for the movement of the pressure head mounting plate 34, ensuring that it moves parallel to the connecting plate 31.

[0034] like Figures 1-4 As shown, the lower end of the buffer spring 36 abuts against the pressure head mounting plate 34, and the upper end of the buffer spring 36 abuts against the bottom of the connecting plate 31. When the pressure head 37 contacts the workpiece, the drive device 21 continues to descend, and the buffer spring 36 is compressed, converting the "displacement control" of the drive device 21 into "pressure control" of the workpiece. This process absorbs impact, provides a smooth and constant pressing force, and effectively prevents damage to precision workpieces from hard impacts.

[0035] like Figure 1 and Figure 2 As shown, a pair of slide rails 38 are provided on the inner sidewalls of the two side panels of the frame 11, and a pair of sliders 39 are fixedly connected to the left and right sidewalls of the connecting plate 31. The pair of sliders 39 are slidably connected to the pair of slide rails 38. Through the sliding guidance of the sliders 39 in the slide rails 38, the connecting plate 31 is further ensured to move straight up and down, thereby ensuring the straight up and down movement of the pressure head 37.

[0036] like Figure 4As shown, the bottom of the pressure head mounting plate 34 is provided with a standard interface coaxial with the center line, and the standard connector 310 on the pressure head 37 is screwed into the standard interface to facilitate the replacement of the pressure head 37.

[0037] It should be noted that the control system is electrically connected to the drive device 21 and the pressure sensor 33, forming a closed-loop control circuit. Its workflow is as follows: The control system first sends an action command to the drive device 21, causing it to drive the pressure head 37 downwards. When the pressure head 37 contacts the workpiece, the pressure sensor 33 collects the actual pressure value in real time and feeds it back to the control system. The control system compares and calculates the received actual pressure value with a preset pressure threshold in real time, and precisely controls the action state of the drive device 21 based on the calculation result, such as stopping, holding pressure, or returning, thereby achieving precise pressure control and overload protection during the pressing process, ensuring the consistency and reliability of the pressing quality. The control logic of the control system is a commonly used and universal control system for pressing devices, and will not be elaborated further here.

[0038] In use, the workpiece is placed in the positioning mold 13, and the connecting plate 31 is pushed vertically downward by the drive device 21 so that the entire pressing head mechanism 3 can approach the workpiece. When the pressing head 37 contacts the workpiece, the drive device 21 continues to move downward. At this time, the pressing head mounting plate 34 is subjected to a reverse force and begins to move upward relative to the connecting plate 31 so as to compress the buffer spring 36 on the buffer guide shaft 35. This process converts the rigid displacement of the drive device 21 into flexible pressure, thereby achieving smooth pressing. At the same time, the floating structure 32 automatically compensates for possible alignment errors to ensure that the pressure is applied vertically. Meanwhile, the pressure sensor 33 monitors and provides feedback on the magnitude of the pressing force in real time. When the pressure reaches the preset value, the control system controls the drive device 21 to maintain pressure or return, thereby completing a precise, controllable and flexible pressing operation.

[0039] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressing device, characterized in that, include: The main body mechanism includes a frame and a worktable, wherein the worktable is fixedly connected to the frame; A drive mechanism, including a drive unit, which is mounted on the top wall panel of the frame; The pressure head mechanism includes a connecting plate, a sensor unit, a buffer unit, a pressure head mounting plate, and a pressure head. The connecting plate is fixedly connected to the output end of the driving device. The pressure head mounting plate is installed below the connecting plate in a manner that coincides with the center line of the connecting plate. The sensor unit and the buffer unit are both installed between the connecting plate and the pressure head mounting plate. The pressure head is detachably installed below the pressure head mounting plate.

2. The pressing device according to claim 1, characterized in that, The main body mechanism also includes a positioning mold mounted on the worktable, which is coaxially mounted below the pressure head.

3. The pressing device according to claim 2, characterized in that, A pair of mounting ears are fixedly connected to the bottom side wall of the positioning mold, and a fixing screw is installed between the pair of mounting ears and the worktable.

4. The pressing device according to claim 1, characterized in that, The driving device is one of a ball screw mechanism driven by a servo motor, a cylinder, or a servo electric cylinder.

5. A pressing device according to claim 4, characterized in that, The output end of the drive device is a piston rod coaxially arranged with the center line of the top wall panel of the frame, and the lower end of the piston rod is fixedly connected to the connecting plate.

6. The pressing device according to claim 1, characterized in that, The sensor unit includes a floating structure mounted on the lower end of the connecting plate and a pressure sensor mounted on the lower end of the floating structure. The lower end of the pressure sensor is fixedly connected to the pressure head mounting plate.

7. A pressing device according to claim 6, characterized in that, The buffer unit includes a pair of buffer guide shafts disposed on both sides of the pressure sensor and a pair of buffer springs sleeved on the pair of buffer guide shafts. The lower end of the buffer guide shaft is fixedly connected to the pressure head mounting plate, and the upper end of the buffer guide shaft slides through the top of the connecting plate.

8. A pressing device according to claim 7, characterized in that, The lower end of the buffer spring abuts against the pressure head mounting plate, and the upper end of the buffer spring abuts against the bottom of the connecting plate.

9. A pressing device according to claim 1, characterized in that, A pair of slide rails are provided on the inner sidewalls of the two side panels of the frame, and a pair of sliders are fixedly connected to the sidewalls of the left and right sides of the connecting plate. The pair of sliders are slidably connected to the pair of slide rails respectively.

10. A pressing device according to claim 1, characterized in that, The bottom of the pressure head mounting plate is provided with a standard interface coaxial with the center line, and the standard connector on the pressure head is screwed into the standard interface.

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