Fixing mechanism for automatic screw locking machine

Abstract

The utility model discloses a fixing mechanism for an automatic screw locking machine, which comprises a die holder and a die, the die holder is provided with a mounting groove with an opening at the upper end, a support ring is fixedly mounted in the circumferential direction of the mounting groove, the die is provided with a sinking table in a downward protruding manner, and the sinking table is abutted against the support ring; four stepped holes are formed in the die and located in the corners of the die, bolts are placed in the stepped holes, the heads of the upper ends of the bolts are located in the stepped holes, insertion holes are formed in the lower ends of the bolts, and bolt positioning structures are arranged in the die base; two connecting plates are arranged in the die holder, locking pins are fixedly installed at the two ends of each connecting plate, each locking pin is provided with a locking end capable of being matched with the corresponding inserting hole in an inserted mode, and a driving structure used for driving the two connecting plates to act synchronously is installed in the die holder. The fixing mechanism for the automatic screw locking machine has the advantages of being free of dismounting tools, simple and convenient to operate, time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of screw fastening machine technology, and in particular to a fixing mechanism for an automatic screw fastening machine. Background Technology

[0002] In the field of machining, screws play a crucial role in fixing and installing parts. Currently, screws are typically tightened manually, which is time-consuming, labor-intensive, and wastes significant labor costs. Furthermore, manual screw tightening can lead to inconsistent screw tightness and poor quality control, affecting the quality of equipment using screws. The advent of automatic screw-tightening machines has greatly solved these problems.

[0003] An automatic screw fastening machine is a device that replaces manual screw assembly. Automated screw assembly significantly improves work efficiency and reduces installation error rates. Currently used automatic screw fastening machines, to improve efficiency, have a guide rail fixed to the operating table. Two sliders slide on the guide rail, and a mold base is fixedly mounted on the slider. A mold is detachably fixed on the mold base. The workpiece to be screwed is placed inside the mold. The two molds improve screw fastening efficiency. However, during use, the corresponding mold needs to be changed for different workpieces. Currently, the mold and mold base are fixed with bolts. Each time a change is made, tools are needed to disassemble and install the mold, which is not conducive to simplifying operations. Furthermore, after repeated disassembly and reassembly of the bolts, misalignment or even failure can easily occur, failing to meet usage requirements. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a fixing mechanism for an automatic screw fastening machine that does not require disassembly tools, is simple and convenient to operate, and saves time and effort.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A fixing mechanism for an automatic screw fastening machine includes a mold base and a mold. The mold base has a mounting groove with an opening at the upper end. A support ring is fixedly mounted circumferentially in the mounting groove. The mold has a downwardly protruding countersunk platform that abuts against the support ring.

[0007] The mold has four stepped holes located at the corners of the mold. A pin is placed in each stepped hole, with the upper end of the pin inside the stepped hole and the lower end of the pin having an insertion hole. A pin positioning structure is provided inside the mold base.

[0008] The mold base is provided with two connecting plates, and locking pins are fixedly installed at both ends of the connecting plates. The locking pins have locking ends that can be inserted into the sockets. The mold base is provided with a drive structure for driving the two connecting plates to move synchronously.

[0009] In this way, the mold is used to hold the workpiece to be screwed. The mold is installed on a mold base. During installation, the drive mechanism drives two connecting plates closer together, placing the mold on the mold base. The mold is supported by a support ring. Four pins are inserted into the stepped holes, and the pin positioning mechanism secures the pins. Then, the drive mechanism drives the two connecting plates away from each other, causing the locking end of the locking pin to insert into the socket, fixing the position of the pin and thus securing the mold. During disassembly, the drive mechanism drives the two connecting plates closer together, causing the locking end of the locking pin to retract from the socket, after which the mold can be removed.

[0010] The drive structure includes a pull rod and four slide rods. Slide rods are fixedly installed at both ends of the connecting plate. Two slide seats are fixedly installed in the mold base for each slide rod. The slide seats have sliding holes that slide with the slide rods. One end of the pull rod is rotatably connected to one of the connecting plates through a bearing. The other connecting plate has a clearance hole through the pull rod. The pull rod passes through the clearance hole and through the mold base and is fixed with a handle. The mold base is fixed with a locking cylinder. The locking cylinder is sleeved on the outside of the pull rod. A fixing pin is fixed on the pull rod. The locking cylinder has an L-shaped locking groove. The fixing pin slides with the locking groove.

[0011] Two gear shafts are rotatably mounted inside the mold base. Gears are fixed on the gear shafts. Slide rods, which are fixedly connected to the two connecting plates, are set on both sides of the gears and are fixedly mounted with racks that mesh with the gears.

[0012] Each of the slide rods is fitted with a compression spring, which is located between the pull plate and the slide block.

[0013] The pin positioning structure includes a positioning ring fixedly installed on the mold base, a positioning block fixed inside the positioning ring, and a positioning port at the lower end of the pin that can be inserted and engaged with the positioning block.

[0014] The lower end of the mold base is fixedly connected to the slider by bolts.

[0015] In summary, the fixing mechanism for automatic screw fastening machines has the advantages of requiring no disassembly tools, being simple and convenient to operate, and saving time and effort. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a fixing mechanism for an automatic screw fastening machine according to the present invention.

[0017] Figure 2 for Figure 1 The exploded diagram.

[0018] Figure 3 This is a schematic diagram of the mold base.

[0019] Figure 4 This is a schematic diagram of the mold.

[0020] Figure 5 This is a schematic diagram of the latch. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] like Figure 1-5 As shown, a fixing mechanism for an automatic screw fastening machine includes a mold base 1 and a mold 2. The mold base has an installation groove with an opening at the upper end. A support ring 3 is fixedly installed circumferentially in the installation groove. The mold has a downward protruding countersunk platform that abuts against the support ring.

[0023] The mold has four stepped holes 4 and the stepped holes are located at the corners of the mold. A pin 5 is placed in the stepped hole. The upper end of the pin is located in the stepped hole. The lower end of the pin has a insertion hole 6. The mold base is provided with a pin positioning structure.

[0024] The mold base is provided with two connecting plates 7, and locking pins 8 are fixedly installed at both ends of the connecting plates. The locking pins have locking ends that can be inserted into the sockets. The mold base is provided with a drive structure for driving the two connecting plates to move synchronously.

[0025] In this way, the mold is used to hold the workpiece to be screwed. The mold is installed on a mold base. During installation, the drive mechanism drives two connecting plates closer together, placing the mold on the mold base. The mold is supported by a support ring. Four pins are inserted into the stepped holes, and the pin positioning mechanism secures the pins. Then, the drive mechanism drives the two connecting plates away from each other, causing the locking end of the locking pin to insert into the socket, fixing the position of the pin and thus securing the mold. During disassembly, the drive mechanism drives the two connecting plates closer together, causing the locking end of the locking pin to retract from the socket, after which the mold can be removed.

[0026] In implementation, the drive structure includes a pull rod 9 and four slide rods 10. Slide rods are fixedly installed at both ends of the connecting plate. Two slide seats 11 are fixedly installed in the mold base for each slide rod. The slide seats have sliding holes that slide with the slide rods. One end of the pull rod is rotatably connected to one of the connecting plates through a bearing. The other connecting plate has a clearance hole through the pull rod. The pull rod passes through the clearance hole and through the mold base and is fixedly attached to a handle 12. The mold base is fixed with a locking cylinder 13. The locking cylinder is sleeved on the outside of the pull rod. A fixing pin is fixed on the pull rod. The locking cylinder has an L-shaped locking groove 14. The fixing pin slides with the locking groove.

[0027] Two gear shafts are rotatably installed inside the mold base. Gears 15 are fixed on the gear shafts. Slide rods that are fixedly connected to the two connecting plates are set on both sides of the gears and racks 16 that mesh with the gears are fixedly installed on both sides.

[0028] In this way, when the drive structure is activated, rotating the handle drives the pull rod to rotate, causing the fixing pin to rotate to the side where the locking groove is aligned with the pull rod. Pulling the handle outwards moves a connecting plate, and due to the meshing of the gear and rack, the two connecting plates move closer together, causing the locking end of the locking pin to disengage from the insertion hole. At this point, the mold can be removed. A new mold is then placed on the mold base. After the pin is positioned, the pull rod is pushed inwards, causing the two connecting plates to move away from each other. The locking end of the locking pin inserts into the insertion hole. Then, rotating the handle drives the pull rod to rotate, causing the fixing pin to rotate to the other side of the locking groove, achieving position locking.

[0029] In practice, each slide rod is fitted with a compression spring 17, which is located between the pull plate and the slide block. The compression springs, when reset, push the locking end of the locking pin into the insertion hole, facilitating use.

[0030] In implementation, the pin positioning structure includes a positioning ring 18 fixedly installed on the mold base, a positioning block 19 fixed inside the positioning ring, and a positioning port 20 at the lower end of the pin that can be inserted and engaged with the positioning block. This facilitates locking the position of the pin so that the insertion hole is aligned with the locking end of the locking pin.

[0031] In practice, the lower end of the mold base is fixedly connected to the slider 21 by bolts. This facilitates installation. The slider fits onto the slide rail.

[0032] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A fixing mechanism for an automatic screw fastening machine, characterized in that, It includes a mold base (1) and a mold (2). The mold base has an installation groove with an opening at the top. A support ring (3) is fixedly installed in the circumferential direction of the installation groove. The mold has a downward protruding platform that abuts against the support ring. The mold has four stepped holes and the stepped holes (4) are located at the corner of the mold. A pin (5) is placed in the stepped hole. The upper end of the pin is located in the stepped hole. The lower end of the pin has a insertion hole (6). The mold base is provided with a pin positioning structure. The mold base is provided with two connecting plates (7), and locking pins (8) are fixedly installed at both ends of the connecting plates. The locking pins have locking ends that can be inserted into the sockets. The mold base is provided with a drive structure for driving the two connecting plates to move synchronously.

2. The fixing mechanism for an automatic screw fastening machine according to claim 1, characterized in that, The drive structure includes a pull rod (9) and four slide rods (10). Slide rods are fixedly installed at both ends of the connecting plate. Two slide seats (11) are fixedly installed in the mold base for each slide rod. The slide seats have sliding holes that slide with the slide rods. One end of the pull rod is rotatably connected to one of the connecting plates through a bearing. The other connecting plate has a clearance hole through the pull rod. The pull rod passes through the clearance hole and through the mold base and is fixed with a handle (12). The mold base is fixed with a locking cylinder (13). The locking cylinder is sleeved on the outside of the pull rod. A fixing pin is fixed on the pull rod. An L-shaped locking groove (14) is opened on the locking cylinder. The fixing pin slides with the locking groove. Two gear shafts are rotatably installed inside the mold base. Gears (15) are fixed on the gear shafts. Slide rods that are fixedly connected to the two connecting plates are set on both sides of the gears and are fixedly installed with racks (16) that mesh with the gears.

3. A fixing mechanism for an automatic screw fastening machine according to claim 2, characterized in that, Each slide rod is fitted with a compression spring (17), which is located between the pull plate and the slide block.

4. A fixing mechanism for an automatic screw fastening machine according to claim 3, characterized in that, The pin positioning structure includes a positioning ring (18) fixedly installed on the mold base, a positioning block (19) fixed inside the positioning ring, and a positioning port (20) at the lower end of the pin that can be inserted and cooperated with the positioning block.

5. A fixing mechanism for an automatic screw fastening machine according to claim 1, characterized in that, The lower end of the mold base is fixedly connected to the slider (21) by bolts.

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