Automatic pre-locking screw machine for terminal

Abstract

The case relates to a kind of automatic pre-locking screw machine of terminal, including machine table, rack is installed on machine table, automatic material placing and feeding mechanism is installed on machine table, screw feeder, screw locking mechanism and the lifting mechanism for driving screw locking mechanism lifting are installed on rack, screw locking mechanism is installed in the front of screw feeder, screw feeder is connected with screw locking mechanism by pipeline to give screw locking mechanism feed, rack is also installed with the material receiving table connected to the front end of automatic material placing and feeding mechanism, the material ejecting and discharging mechanism connected to the right side of material receiving table and the discharging guide groove connected to the right side of material receiving table, and screw locking mechanism is suspended above material receiving table.The case forms the full-automatic process of feeding, positioning, feeding, pre-locking and discharging through the close cooperation of each mechanism.Completely replace artificial material placing, feeding, pre-locking, collecting and other operations, solve the problem of low efficiency of traditional manual work and semi-automatic still needing manual intervention, greatly improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of non-standard automated mechanical equipment, specifically to an automatic pre-locking screw machine for terminal blocks. Background Technology

[0002] In the production and assembly process of electrical equipment, terminal blocks are core components for circuit connections, and their assembly efficiency with external wires directly affects the overall wiring and circuit assembly progress. Among them, the screw assembly of terminal blocks is a critical step. The traditional process requires manual handling of the screws, followed by the use of a screwdriver to fully tighten the screws during the final electrical connection stage.

[0003] To improve the assembly efficiency of subsequent electrical connections and simplify on-site operations, the industry is increasingly adopting a pre-locking screw process. This involves pre-screwing the screws into the screw holes of the terminal blocks, placing them in a semi-locked state. This process eliminates the need to individually pick up and align screws on-site during final assembly, significantly reducing on-site operational steps. It also prevents screw loss and provides a foundation for rapid tightening after subsequent wire connection, thereby improving efficiency.

[0004] However, the current screw pre-locking process for terminal blocks is inefficient and fails to meet the demands of high-efficiency production. Currently, operators use screwdrivers to align screws one by one with the terminal block screw holes and partially screw them in. This method is not only extremely inefficient and time-consuming for pre-locking a single terminal, but also results in inconsistent manual screwing force and depth. Some screws are pre-locked too shallowly and easily fall off, while those pre-locked too deeply affect subsequent wire connection, severely restricting assembly consistency.

[0005] Existing technologies also employ electric screwdrivers or handheld automatic screw fastening machines, but these still require manual alignment of the tools with the screw holes and manual fixing of the terminal block positions. During operation, hand tremors can easily cause screw misalignment, and continuous manual labor is required for feeding, positioning, and other steps, resulting in limited overall efficiency improvements and failing to meet the demands of large-scale mass production for automation and high stability.

[0006] In summary, existing pre-locking technology for terminal block screws suffers from problems such as low efficiency and poor pre-locking consistency, failing to fully leverage the auxiliary role of the pre-locking process in subsequent assembly and failing to meet the demand for high-efficiency pre-locking screws.

[0007] Therefore, developing a pre-locking device for terminal screws that can achieve full-process automation has become an important issue that needs to be addressed by those skilled in the art. Utility Model Content

[0008] This invention overcomes the shortcomings of the above-mentioned technologies and provides an automatic pre-locking screw machine for terminal blocks.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: An automatic pre-locking screw machine for terminal blocks includes a machine base, a frame mounted on the machine base, an automatic feeding mechanism mounted on the machine base, a screw feeder, a screw locking mechanism, and a lifting mechanism for driving the screw locking mechanism to rise and fall on the frame. The screw locking mechanism is installed in front of the screw feeder, and the screw feeder is connected to the screw locking mechanism through a pipe to supply material to the screw locking mechanism. The frame is also equipped with a receiving platform connected to the front end of the automatic feeding mechanism, a top-and-bottom feeding mechanism connected to the right side of the receiving platform, and a bottom-and-bottom guide groove connected to the right side of the receiving platform. The screw locking mechanism is suspended above the receiving platform.

[0010] Furthermore, the automatic material feeding mechanism includes a vibrating feeding plate and a linear guide rail connected to the vibrating feeding plate, with the other end of the linear guide rail connected to the receiving platform.

[0011] Furthermore, the screw feeder includes a hopper, a control panel, and pipes connected to the screw-locking mechanism, the hopper including a removable outer cover.

[0012] Furthermore, the screw-locking mechanism includes a servo motor and a screwdriver head connected to the lower end of the servo motor. The screwdriver head includes a chamber connected to a pipe to receive screw material.

[0013] Furthermore, the lifting mechanism includes a fixed base mounted on the frame and a first cylinder connected to the fixed base for driving the screw-locking mechanism to slide relative to the fixed base. A slide rail is mounted on the fixed base, and a slider is slidably connected to the slide rail. The rear side of the screw-locking mechanism is connected to the slider. The lower end of the first piston rod of the first cylinder is connected to one side of the screw-locking mechanism to drive the screw-locking mechanism to slide up and down relative to the fixed base.

[0014] Furthermore, the receiving platform includes a receiving guide groove connected to the automatic material feeding mechanism. The receiving platform also includes a clearance hole opened on the right side of the receiving guide groove for the top material unloading mechanism to pass through. The height of the right side of the receiving guide groove is lower than the height of the left side so that the top material unloading mechanism can press and fix the material in the receiving guide groove. The receiving platform also includes a clearance space connected to the right side of the clearance hole.

[0015] Furthermore, the top material feeding mechanism includes a second cylinder, a push rod connected to the left side of the second cylinder, and a pressure plate mounted on the push rod. The second cylinder includes a second piston rod, and the push rod is connected to the second piston rod. Furthermore, the screw feeder, screw locking mechanism, lifting mechanism, receiving platform, top material unloading mechanism, and unloading guide chute are all arranged in at least two sets side by side.

[0016] Furthermore, the lower end of the machine tool is also equipped with rollers and adjustable support legs.

[0017] Compared with the prior art, the beneficial effects of this utility model are: The automatic pre-locking screw machine for terminal blocks provided in this case achieves a fully automated process of loading, positioning, feeding, pre-locking, and unloading through the close cooperation of various mechanisms. It completely replaces manual operations such as material placement, feeding, pre-locking, and collection, solving the problems of low efficiency in traditional manual processes and the need for manual intervention even in semi-automated processes, thus significantly improving production efficiency. Through the directional calibration of the automatic material placement mechanism, the precise receiving of the material on the receiving platform, the precise drive of the lifting mechanism, and the torque control of the screw-locking mechanism, it ensures accurate terminal placement, accurate screw positioning, and consistent pre-locking force, solving the problem of inconsistent quality in manual operations. Simultaneously, the various mechanisms work collaboratively in the order of loading, pre-locking, and unloading, with no redundant steps, and avoid accidental damage that may result from manual contact with materials, providing efficient, stable, and reliable fully automated operation for pre-locking terminal block screws. Attached Figure Description

[0018] Figure 1 This is a 3D view of the automatic pre-locking screw machine for the terminal blocks in this case.

[0019] Figure 2 This is a top view of the automatic pre-locking screw machine for terminal blocks in this case.

[0020] Figure 3 This is a structural diagram of the screw-locking mechanism and the lifting mechanism in this case.

[0021] Figure 4 This is a structural diagram of the material receiving platform, the top material unloading structure, and the material unloading guide channel in this case. Detailed Implementation

[0022] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art: For ease of description and understanding, please refer to the attached diagram for descriptions related to positional relationships such as front, back, top, bottom, left, right, outside, and inside, as well as descriptions related to X, Y, and Z axis directions.

[0023] It should be noted that the automatic pre-locking screw machine for terminal blocks in this case includes common mechanical equipment mechanisms or components such as the frame, protective housing, wires, and air pipes. These are well-known technologies in the field and are not the focus of protection in this case. Those skilled in the art can refer to them for setup, so they will not be described in detail here. To make the description and explanation more intuitive in conjunction with the accompanying drawings, the textual descriptions of this part have been simplified or omitted in this case, and the drawings have also been simplified or omitted.

[0024] It should be further explained that, in specific implementation, the automatic pre-locking screw machine for terminal blocks in this case uses multiple inductive switches to detect the presence or absence of objects, and to detect the position or state of objects, thereby triggering the action of each mechanism or changing the state of each mechanism, thus realizing the cyclical operation of each mechanism. The relevant content here is well-known technology in the field, and the specific placement and number of each inductive switch will not be described in detail here. In specific implementation, those skilled in the art can adapt the corresponding inductive switches according to common knowledge in the field and the various mechanisms in this case to achieve linkage between the various mechanisms.

[0025] The device in this case is used for pre-locking screws on terminal blocks. In the prior art, screws are usually tightened manually with a screwdriver, which is inefficient and the tightness is inconsistent. Another method is to use a handheld electric screwdriver or a handheld automatic screw fastening machine for semi-automatic pre-locking, which still requires manual operation. Although the efficiency is improved to some extent, it is still difficult to meet the needs.

[0026] like Figures 1 to 4As shown, this invention provides an automatic pre-locking screw machine for terminal blocks, including a machine base 100, on which a frame 101 is mounted. An automatic feeding mechanism 1 is installed on the machine base 100, and a screw feeder 2, a screw-locking mechanism 3, and a lifting mechanism 4 for driving the screw-locking mechanism 3 to rise and fall are installed on the frame 101. Built-in guide rails, positioning sensors, and pushing components can identify the orientation of the terminal blocks and adjust their posture through mechanical structures. In specific implementation, the automatic feeding mechanism 1 organizes the disordered terminal blocks 200 into a uniform orientation and pushes them to the receiving table 6, replacing manual feeding and avoiding the problem of screws being installed backwards due to human error in orientation identification. It also achieves automatic continuous feeding of terminal blocks 200, eliminating manual operation. The screw feeder 2 sorts the screws and continuously feeds them to the screw-locking mechanism 3 through a pipe 5, avoiding delays caused by manual screw picking and passing, ensuring continuous screw feeding with uniform posture, and preventing jamming of the screw-locking mechanism 3 due to incorrect screw posture. The lifting mechanism 4 drives the screw-locking mechanism 3 to move up and down, aligning it with the screw holes of the terminals on the receiving platform 6. The screw-locking mechanism 3 then initiates the pre-locking of the screws. Precise positioning is achieved through the lifting mechanism 4 to ensure consistent pre-locking force for each terminal 200, effectively solving the problem of uneven screw-tightening force during manual tightening and improving pre-locking efficiency. The screw-locking mechanism 3 is installed in front of the screw feeder 2, ensuring the shortest feeding path for the pipe 5. Furthermore, the screw-locking mechanism 3 is suspended above the receiving platform 6, forming a vertical correspondence with the terminals on the receiving platform 6, ensuring the shortest stroke and highest efficiency layout for each mechanism, further improving automation efficiency. The frame 101 also includes a receiving platform 6 connected to the front end of the automatic feeding mechanism 1, a top-and-bottom feeding mechanism 7 connected to the right side of the receiving platform 6, and a bottom-and-bottom guide trough 8 connected to the right side of the receiving platform 6. The receiving platform 6 receives the terminals 200 from the automatic feeding mechanism 1, providing a stable working platform for the screw-locking mechanism 3. The receiving platform 6 fixes the position of the terminal 200 to prevent misalignment of the screws due to terminal displacement during screw tightening, thus improving pre-locking accuracy. The clamping block of the ejector feeding mechanism 7 first clamps the next batch of terminals to be processed on the receiving platform 6 to ensure processing stability, and then pushes the pre-locked terminal 200 away from the receiving platform 6. The terminal 200 slides along the feeding guide 8 to the collection point, realizing simultaneous clamping of the workpiece to be processed and ejection of the finished product, without wasting operation time and improving production efficiency.

[0027] The overall working principle of the automatic pre-locking screw machine for terminal blocks in this case is as follows: After the equipment is started, the automatic feeding mechanism 1 first organizes the disordered terminal blocks 200 into a uniform direction and pushes them into the positioning groove of the receiving platform 6; then the top feeding mechanism 7 starts to press and fix the terminal blocks 200 in the receiving platform 6 to prevent the terminal blocks 200 from shifting during subsequent screw locking; at the same time, the screw feeder 2 delivers screws to the screw locking mechanism 3 through the pipe 5; then the lifting mechanism 4 drives the screw locking mechanism 3 to descend, so that the screw locking mechanism 3 is accurately aligned with the screw of the terminal block 200 fixed on the receiving platform 6. The screw-locking mechanism 3 starts and completes the pre-locking of the screws according to the preset torque. After the pre-locking operation is completed, the screw-locking mechanism 3 rises and resets under the drive of the lifting mechanism 4. The top-loading and unloading mechanism 7 starts again and pushes the pre-locked terminal 200 away from the receiving table 6. The pushed-away terminal 200 slides along the inclined unloading guide 8 to the designated collection box, completing the entire processing flow. Then the automatic feeding mechanism 1 continues to transport the next batch of terminal 200 to the receiving table 6. The top-loading and unloading mechanism 7 starts again to press and fix the terminal 200. The above steps are repeated to realize the continuous automated operation of screw pre-locking of terminal 200.

[0028] Reference Figure 1 , Figure 2 As shown, specifically, the automatic material feeding mechanism 1 includes a vibrating feeding tray 11 and a linear guide rail 12 connected to the vibrating feeding tray 11. The other end of the linear guide rail 12 is connected to the receiving platform 6. In specific implementation, a linear vibrator is installed at the lower end of the linear guide rail 12. The linear vibrator can generate stable vibration, causing the terminals 200 in the vibrating feeding tray 11 to move forward in an orderly manner along the linear guide rail 12. The automatic material feeding mechanism 1 of this invention ensures the stability and accuracy of the terminals 200 during the conveying process, avoids feeding errors caused by manual feeding, and improves production efficiency. In addition, the vibration frequency and amplitude of the linear vibrator can be adjusted according to actual production needs to adapt to terminals 200 of different specifications and shapes, improving the versatility and flexibility of the equipment.

[0029] Furthermore, continue to refer to Figure 1 , Figure 2As shown, the screw feeder 2 in this case includes a hopper 21, a control panel 22, and a pipe 5 connected to the screw-locking mechanism 3. In specific implementation, the screw feeder 2 is an air-blowing type screw feeder with a built-in air pump or connected to an external air source, using airflow to push screws along the pipe. The hopper 21 stores a batch of screws, and includes a removable outer cover 211. The removable design of the outer cover 211 facilitates manual replenishment and cleaning. The control panel 22 controls the feeding rhythm through parameter settings to ensure it matches the operating frequency of the screw-locking mechanism 3. In specific implementation, personnel can adjust the parameters of the control panel 22 to adapt to the feeding needs of screws of different specifications, improving the equipment's versatility. The air-blowing design uses airflow to precisely push screws from the hopper through the pipe 5 to the bit of the screw-locking mechanism 3, completing the screw supply. The air-blowing feeding method is fast and stable, reducing the risk of screw jamming compared to traditional vibration feeding.

[0030] Reference Figures 1-3 As shown, the screw-locking mechanism 3 of this invention includes a servo motor 31 and a screwdriver head 32 connected to the lower end of the servo motor 31. The screwdriver head 32 includes a chamber 321 connected to the pipe 5 to receive screw materials. In specific implementation, the servo motor 31, as the power core of the screw-locking mechanism 3, has the characteristics of high precision and high response speed. It can accurately control the rotation speed and torque of the screwdriver head 32 according to preset parameters, ensuring that the screws on each terminal 200 are tightened with appropriate force, neither loosening due to insufficient force nor damaging the terminal 200 due to excessive force. The chamber 321 at the lower end of the screwdriver head 32 is tightly connected to the pipe 5. When the screw is transported from the pipe 5, it can smoothly enter the chamber 321 and be accurately guided to the rotation center position of the screwdriver head 32, ensuring the stability and accuracy of the screw during the tightening process. Driven by the lifting mechanism 4, the screw-locking mechanism 3 of this invention can quickly and accurately complete the screw-locking operation, greatly improving production efficiency and product quality.

[0031] Specifically, continue to refer to Figures 1-3As shown, the lifting mechanism 4 of this invention includes a fixed base 41 mounted on the frame 101 and a first cylinder 42 connected to the fixed base 41 for driving the screw-locking mechanism 3 to slide relative to the fixed base 41. The lower end of the first piston rod 421 of the first cylinder 42 is connected to one side of the screw-locking mechanism 3 to drive the screw-locking mechanism 3 to slide up and down relative to the fixed base 41. In actual operation, the lifting mechanism 4 is powered by the first cylinder 42, and the first piston rod 421 of the first cylinder 42 performs telescopic movement. A slide rail 43 is mounted on the fixed base 41, and a slider 44 is slidably connected to the slide rail 43. The rear side of the screw-locking mechanism 3 is connected to the slider 44, thereby driving the screw-locking mechanism 3 to slide up and down along the slide rail 42 on the fixed base 41 through the first cylinder 42. The cooperation of the slide rail 42 and the slider 43 makes the movement of the screw-locking mechanism 3 more stable and precise, effectively reducing the shaking and deviation during the movement, and ensuring that the screw-locking mechanism 3 can accurately reach the screw hole position on the terminal 200 for screw-locking operation. The lifting mechanism 4 provided in this case has a simple and reliable structure, is easy to maintain and repair, and can control the lifting speed and stroke range of the screw-locking mechanism 3 by adjusting the pressure and stroke of the first cylinder 42 according to different production needs, further improving the adaptability and flexibility of the equipment. The fixed base 41 is securely mounted on the frame 101, providing solid support for the entire lifting mechanism 4, ensuring the stability and reliability of the equipment during long-term operation, reducing processing errors caused by equipment shaking, and improving product quality and production efficiency.

[0032] Reference Figure 1 , Figure 2 , Figure 4 As shown, the receiving platform 6 includes a receiving guide groove 61 connected to the automatic material feeding mechanism 1. In specific implementation, the receiving guide groove 61 is a long, narrow groove structure, with its rear end connected to the discharge end of the automatic material feeding mechanism 1. The inner wall of the groove matches the shape of the terminal block 200 to ensure the stability of material transmission of the terminal block 200, limit the left and right displacement of the terminal block 200, and achieve initial positioning. The receiving platform 6 also includes a clearance hole 62 on the right side of the receiving guide groove 61 for the material feeding mechanism 7 to pass through. The clearance hole 62 provides the material feeding mechanism 7 with room to move, allowing it to move within the receiving guide groove 61 of the receiving platform 6, avoiding structural interference between the material feeding mechanism 7 and the receiving platform 6, and completing the pressing and ejection action of the terminal block 200. The height of the right side of the receiving guide groove 61 is lower than that of the left side to facilitate the material feeding mechanism 7 to press and fix the material in the receiving guide groove 61. The receiving platform 6 also includes a clearance space 63 connected to the right side of the clearance hole 62, in order to further avoid interference with the top material unloading mechanism 7.

[0033] Continue to refer to Figure 1 , Figure 2 , Figure 4As shown, the feeding and unloading mechanism 7 of this invention includes a second cylinder 71, a push rod 72 connected to the left side of the second cylinder 71, and a pressure plate 73 mounted on the push rod 72. The second cylinder 71 includes a second piston rod 711, and the push rod 72 is connected to the second piston rod 711. The second cylinder 71 drives the second piston rod 711 to extend and retract, providing horizontal power to the push rod 72 and the pressure plate 73, achieving synchronous clamping, fixing, and feeding actions, thus improving processing efficiency. In specific implementation, the second cylinder 71 drives the second piston rod 711 to extend to the left, causing the push rod 72 and the pressure plate 73 to move synchronously to the left. The pressure plate 73 presses against the terminal 200 in the receiving guide groove 61, while the left end of the push rod 72 pushes the finished terminal from the receiving guide groove 61 through the clearance hole 62 into the unloading guide groove 8 and slides it into the collection box.

[0034] To further improve production and processing efficiency, such as Figure 1 , Figure 2 As shown, in this embodiment, the screw feeder 2, screw locking mechanism 3, lifting mechanism 4, receiving platform 6, top-loading and unloading mechanism 7, and unloading guide chute 8 are all arranged in at least two sets side by side. Users can also set more sets according to actual production needs, and are not limited to this. This arrangement of multiple sets of corresponding components enables efficient parallel operation of the equipment, significantly increasing the number of products processed per unit time compared to equipment with a single set of components, thereby further improving production efficiency and meeting the needs of large-scale production.

[0035] Reference Figure 1 , Figure 2 As shown, furthermore, rollers 102 and height-adjustable support legs 103 are provided at the lower end of the machine base 100 to facilitate stable placement and transportation of the equipment. The design of the rollers 102 allows the equipment to be easily pushed when it needs to be moved, without requiring a large amount of manpower for handling, which is especially suitable for flexible adjustment between different workstations in the production workshop. The height-adjustable support legs 103 provide stable support. When the equipment reaches the designated position, the support legs 103 can be lowered and adjusted to a suitable height, so that the equipment is placed firmly on the ground, preventing displacement due to the rolling of the rollers 102 during operation, thus ensuring the stability of the equipment operation and processing accuracy. At the same time, the height-adjustable function of the support legs 103 can also adapt to different ground flatness. By adjusting the height of the support legs 103, the equipment can be kept level, further improving the operating efficiency of the equipment and product quality. This design combining rollers 102 and height-adjustable support legs 103 takes into account both the convenience of equipment transportation and the stability of equipment operation, providing great convenience for the practical application of the equipment.

[0036] As stated above, this case protects an automatic pre-locking screw machine for terminal blocks, and all technical solutions that are the same as or similar to this case should be considered to fall within the protection scope of this case.

Claims

1. An automatic pre-locking screw machine for terminal blocks, comprising a machine base (100), wherein a frame (101) is mounted on the machine base (100), characterized in that: The machine base (100) is equipped with an automatic material feeding mechanism (1), and the frame (101) is equipped with a screw feeder (2), a screw locking mechanism (3), and a lifting mechanism (4) for driving the screw locking mechanism (3) to rise and fall. The screw locking mechanism (3) is installed in front of the screw feeder (2). The screw feeder (2) is connected to the screw locking mechanism (3) through a pipe (5) to supply material to the screw locking mechanism (3). The frame (101) is also equipped with a receiving platform (6) connected to the front end of the automatic material feeding mechanism (1), a top material unloading mechanism (7) connected to the right side of the receiving platform (6), and a unloading guide groove (8) connected to the right side of the receiving platform (6). The screw locking mechanism (3) is suspended above the receiving platform (6).

2. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The automatic feeding mechanism (1) includes a vibrating feeding plate (11) and a linear guide rail (12) connected to the vibrating feeding plate (11). The other end of the linear guide rail (12) is connected to the receiving platform (6).

3. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The screw feeder (2) includes a hopper (21), a control panel (22), and a pipe (5) connected to the screw locking mechanism (3). The hopper (21) includes a removable cover (211).

4. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The screw-locking mechanism (3) includes a servo motor (31) and a screwdriver head (32) connected to the lower end of the servo motor (31). The screwdriver head (32) includes a chamber (321) connected to the pipe (5) to receive screw material.

5. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The lifting mechanism (4) includes a fixed seat (41) mounted on the frame (101) and a first cylinder (42) connected to the fixed seat (41) for driving the screw locking mechanism (3) to slide relative to the fixed seat (41). A slide rail (43) is mounted on the fixed seat (41), and a slider (44) is slidably connected on the slide rail (43). The rear side of the screw locking mechanism (3) is connected to the slider (44). The lower end of the first piston rod (421) of the first cylinder (42) is connected to one side of the screw locking mechanism (3) to drive the screw locking mechanism (3) to slide up and down relative to the fixed seat (41).

6. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The receiving platform (6) includes a receiving guide groove (61) connected to the automatic feeding mechanism (1). The receiving platform (6) also includes a clearance hole (62) on the right side of the receiving guide groove (61) through which the top feeding mechanism (7) passes. The height of the right side of the receiving guide groove (61) is lower than that of the left side so that the top feeding mechanism (7) can press and fix the material in the receiving guide groove (61). The receiving platform (6) also includes a clearance space (63) connected to the right side of the clearance hole (62).

7. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The top material feeding mechanism (7) includes a second cylinder (71), a push rod (72) connected to the left side of the second cylinder (71), and a pressure plate (73) installed on the push rod (72). The second cylinder (71) includes a second piston rod (711), and the push rod (72) is connected to the second piston rod (711).

8. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The screw feeder (2), screw locking mechanism (3), lifting mechanism (4), receiving platform (6), top material unloading mechanism (7), and unloading guide chute (8) are all arranged in pairs with each other.

9. The automatic pre-locking screw machine for terminal blocks according to claim 1, characterized in that: The lower end of the machine base (100) is also provided with rollers (102) and liftable support legs (103).

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