A press fitting device for assembling a square tongue and a lock tongue plate

Abstract

This invention relates to the field of press-fitting technology and provides a press-fitting device for assembling square latch and locking tongue support plates. The device includes a press-fitting assembly, a limiting assembly mounted on the press-fitting assembly, and a pressure-applying assembly. The limiting assembly includes a buffer mechanism mounted on the press-fitting assembly. This device solves the problem that the positioning mold is unconstrained in the vertical direction, causing the support plate and square latch to warp or even deform during interference fit press-fitting due to the pressing force. Furthermore, relying on manual pressing for passive compensation at the pressing position presents problems such as insufficient pressing force to completely prevent warping, low long-term operating efficiency, and the safety risk of hand injury from the warped position. This device, by pressing the pressure plate, drives the baffle to form a vertical constraint at the assembly joint of the square latch and locking tongue support plate, replacing the passive compensation method of manual pressing. This effectively prevents the workpiece from warping during press-fitting, eliminates the risk of hand injury, and improves operational safety.

Description

Technical Field

[0001] This invention relates to the field of press-fitting technology, and more specifically, to a press-fitting device for assembling square tongue and locking tongue support plates. Background Technology

[0002] The bolt, latch, and bolt support plate are the core components of a door lock system, working together to ensure both the ease of closing and theft prevention. The bolt, due to its angled design, retracts automatically when pressed by the door frame when closing, and then extends out to temporarily secure the door after it has reached its final position, preventing accidental opening; however, it lacks pry resistance. The latch, with its square structure, needs to be manually extended and retracted using a key or an interior knob. It is the core of the anti-theft mechanism, resisting forced entry when inserted, and some models also feature a deadbolt function.

[0003] The assembly of the square tongue and the locking tongue support plate first requires placing the square tongue and the locking tongue support plate on the positioning mold respectively. Then, the worker uses clamps to press one end of the locking tongue support plate into the square tongue. After the square tongue and the locking tongue support plate are assembled, the worker puts the assembled square tongue and the locking tongue support plate into the pressing equipment for pressing operation.

[0004] However, because the latch plate and the square tongue are interference-fitted and ultimately connected by riveting, and because the positioning mold is not constrained in the vertical direction due to its specific design and for ease of handling by workers, if the end of the latch plate is deformed or misaligned during the interference fit, the pressing force will cause slight elastic deformation of the latch plate. The groove of the positioning mold cannot provide reverse support to offset such deformation, resulting in the latch plate and the square tongue lifting at the pressing position, or even greater deformation of the latch plate. Workers usually press the pressing position by hand to ensure that the plate and the square tongue are pressed in place, but the manual pressing force is small and cannot completely prevent lifting. Furthermore, temporarily locking the vertical freedom by hand is a passive compensation measure. Long-term manual operation is not only inefficient, but also poses a high safety risk as the worker's hand is easily squeezed by the lifted position. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a press-fitting device for assembling square tongue and locking tongue support plates.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a press-fitting device for assembling square tongue and locking tongue support plates, comprising a press-fitting assembly, a limiting assembly and a pressure-applying assembly mounted on the press-fitting assembly.

[0007] The limiting component includes a buffer mechanism mounted on the pressing assembly, the top of which is connected to a mold structure and an adjustment mechanism, the adjustment mechanism being located between the buffer mechanism and the mold structure.

[0008] The mold structure includes a mold body connected to a buffer mechanism and two protrusions symmetrically connected to the top of the mold body. Each of the two protrusions has a limiting groove in the middle of its top surface.

[0009] The adjustment mechanism includes a vertical plate connected to the top of the buffer mechanism. Two swing rods are symmetrically hinged to one side of the vertical plate. Each swing rod has a baffle hinged to its top. The two baffles are correspondingly arranged with two limiting slots. The baffles are slidably connected to the inside of the corresponding limiting slots. The two baffles have inclined surfaces on opposite sides.

[0010] The present invention is further configured such that: the pressing assembly includes a main frame and a drive mechanism and a worktable mounted on the top of the main frame; the limiting component and the pressure applying component are both mounted on the top of the worktable; the bottom of the drive mechanism is connected to a pressure head; and the pressure head is located above the limiting component.

[0011] The invention is further configured such that: the buffer mechanism includes a fixed plate installed on the top of the workbench, fixed blocks are connected to the four corners of the top surface of the mold body, a spring rod is installed on the top of the fixed block, and the top of the spring rod is connected to the bottom surface of the mold body.

[0012] The invention is further configured such that: a positioning post is connected to the top of each of the two protrusions; a positioning hole adapted to the positioning post is opened on the bottom surface of the pressure head; the positioning post is adapted to the positioning hole; and a stop block is installed on the top of the mold body, the stop block being located between the two protrusions.

[0013] The invention is further configured such that: protruding rods are connected to the bottom of the two swing rods on the side away from the upright plate; a connecting plate is provided below the mold body; two elongated holes are symmetrically opened on the side wall of the connecting plate; the two protruding rods are correspondingly arranged with the two elongated holes; the protruding rods are inserted into the corresponding elongated holes; each elongated hole is inclined; the top of the elongated hole is located near the end of the connecting plate; the bottom of the elongated hole extends towards the middle of the connecting plate; two pressure plates are installed on the side wall of the connecting plate; the ends of the pressure plates extend towards the pressure application component.

[0014] The present invention is further configured such that: each of the baffles is connected to two sliding pillars on both sides, and two sliding grooves are symmetrically opened on the side wall of each limiting groove. The sliding pillars on the side wall of the baffle are correspondingly arranged with the sliding grooves on the side wall of the corresponding limiting groove. The sliding pillars are inserted into the interior of the corresponding sliding grooves. Two top pillars are connected to the top of the upright plate. Two placement holes are opened at the bottom of the mold body. The top pillars are inserted into the interior of the placement holes.

[0015] The present invention is further configured such that: a locking mechanism is installed on the top of the fixing plate, and the top of the locking mechanism is connected to the bottom of the mold body.

[0016] The invention is further configured such that: the locking mechanism includes a column installed on the top of the fixed plate, a slider is sleeved on the outer side wall of the column, a compression spring is connected between the bottom of the slider and the top of the fixed plate, and the compression spring is sleeved on the outer side wall of the column.

[0017] The invention is further configured such that: two through slots are symmetrically opened on the outer side wall of the column, and a wedge is slidably connected inside each through slot; the wedge-shaped parts of the two wedges are arranged opposite to each other; a guide hole is horizontally opened in the middle of the wedge; a positioning rod is horizontally connected between the inner walls of the two through slots; the two ends of the positioning rod are respectively inserted into the guide holes on the wedges; an auxiliary spring is connected between the side walls of the two through slots and the side walls of the corresponding wedges; and the auxiliary spring is sleeved on the outer wall of the positioning rod.

[0018] The top of the column is fitted with a sleeve, which is connected to the bottom of the mold body. Two inclined parts are symmetrically opened at the bottom of the sleeve, and the two inclined parts are corresponding to two wedges. The inclination angle of the inclined parts is the same as that of the wedges.

[0019] The invention is further configured such that: the pressure application component includes a bracket installed on the top of the workbench and a base plate installed on the top of the bracket, a limiting seat is installed on the top of the base plate, a top rod is passed through the inside of the limiting seat, a swing arm is hinged to the top of the base plate, and a hinge plate is hinged between the side wall of the swing arm and one end of the top rod.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] (1) By setting up a connecting plate, swing rod, baffle and pressure plate, the operator can drive the baffle to form a vertical restriction at the assembly and insertion point of the tongue and locking tongue support plate by pressing the pressure plate, which replaces the passive compensation method of manual pressing, effectively preventing the workpiece from lifting during pressing, while eliminating the risk of hand squeezing and improving operation safety.

[0022] (2) By setting a locking mechanism including wedges, auxiliary springs and sliders, the wedges can automatically pop out and lock the slider after pressing the pressure plate to maintain the constraint state of the baffle. There is no need for the staff to continuously press the plate, so as to achieve the effect of assembling the square tongue and the locking tongue support plate by operating the pressure components simultaneously.

[0023] (3) When the staff presses the pressure plate and locks it with the locking mechanism, the baffle remains in a restricted state, and the staff can remove their hands. They do not need to keep their hands in the pressing area for a long time, thus achieving the purpose of staying away from the pressing components and reducing the risk of their hands being squeezed.

[0024] (4) By setting a sleeve and an inclined part that are linked with the mold structure and the press head, the sleeve can be driven to squeeze the wedge block to unlock when the press head moves down, and the baffle can be triggered to release the constraint after the press head moves up, so that the restriction can be released without manual operation and the workpiece removal process after pressing is simplified. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a press-fitting device for assembling square tongue and locking tongue support plates according to the present invention.

[0026] Figure 2 This is a schematic diagram of the working table, limiting component, and pressure application component working together in this invention.

[0027] Figure 3 This is a schematic diagram of the pressure application component structure in this invention.

[0028] Figure 4 This is a schematic diagram of the limiting component structure in this invention.

[0029] Figure 5 This is a schematic diagram of the overall mold structure in this invention.

[0030] Figure 6 This is a schematic diagram of the mold structure and buffer mechanism working together in this invention.

[0031] Figure 7 This is a schematic diagram of the mold structure and adjustment mechanism working together in this invention.

[0032] Figure 8 for Figure 7 A schematic diagram of the front view structure.

[0033] Figure 9 This is a schematic diagram of the adjustment mechanism in this invention.

[0034] Figure 10 This is a schematic diagram of the locking mechanism in this invention.

[0035] Figure 11 for Figure 10 A schematic diagram of the front view structure.

[0036] Figure 12 for Figure 11 Schematic diagram of the structure cut along the AA section line.

[0037] Explanation of reference numerals in the attached drawings: 1. Pressing assembly; 11. Main frame; 12. Drive mechanism; 13. Press head; 14. Worktable;

[0038] 2. Limiting component; 21. Buffer mechanism; 211. Fixing plate; 212. Fixing block; 213. Spring rod;

[0039] 22. Mold structure; 221. Mold body; 222. Protrusion; 223. Restricting groove; 224. Slide groove; 225. Positioning pin; 226. Abutment;

[0040] 23. Adjustment mechanism; 231. Vertical plate; 232. Swing rod; 233. Protruding rod; 234. Connecting plate; 235. Long hole; 236. Baffle; 237. Pressure plate;

[0041] 238. Locking mechanism; 2381. Slider; 2382. Column; 2383. Compression spring; 2384. Wedge; 2385. Sleeve; 2386. Inclined part; 2387. Through groove; 2388. Positioning rod; 2389. Auxiliary spring;

[0042] 239. Top column; 2301. Sliding column;

[0043] 3. Pressure application component; 31. Bracket; 32. Base plate; 33. Top rod; 34. Swing arm; 35. Hinge plate; 36. Limit seat. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0046] Please see Figures 1-12 The present invention provides the following technical solutions:

[0047] Example 1, see Figure 1 and Figure 2 A press-fitting device for assembling square tongue and locking tongue support plates includes a press-fitting assembly 1. The press-fitting assembly 1 is used to press-fit the square tongue and locking tongue support plates. The press-fitting assembly 1 includes a main frame 11 and a drive mechanism 12 and a worktable 14 installed on the top of the main frame 11. The bottom of the drive mechanism 12 is connected to a press head 13, which is located above the limiting assembly 2. The main frame 11, the drive mechanism 12 and the worktable 14 form the existing eccentric press structure, that is, the rotational motion of the motor is converted into the reciprocating linear motion of the slider along the guide rail through the eccentric mechanism (eccentric shaft and eccentric gear). The specific details are not described here.

[0048] The pressure head 13 is connected to the slider of the eccentric press structure. When the drive mechanism 12 is running, the pressure head 13 can move up and down in the vertical direction, and then the pressure head 13 is used to perform pressing operations on the tongue and locking tongue support plate.

[0049] The top of the workbench 14 is equipped with a limiting component 2 and a pressing component 3. The limiting component 2 is used to position the square tongue and the locking tongue support plate, while the pressing component 3 is used to press one end of the locking tongue support plate into the interior of the square tongue. After pressing, the pressing head 13 is used to press the square tongue and the locking tongue support plate into place. This setting eliminates the need for workers to repeatedly pick up and drop the square tongue and the locking tongue support plate. After the square tongue and the locking tongue support plate are assembled, the pressing operation can be performed directly, which greatly improves the assembly and pressing efficiency.

[0050] The specific structure of component 2 is as follows:

[0051] The limiting component 2 includes a buffer mechanism 21 installed on the pressing component 1. The top of the buffer mechanism 21 is connected to a mold structure 22. An adjustment mechanism 23 is located between the buffer mechanism 21 and the mold structure 22. The mold structure 22 is used to position the square tongue and the locking tongue support plate to facilitate subsequent assembly and pressing operations. After the square tongue and the locking tongue support plate are placed on the mold structure 22, the pressing component 3 is used to assemble the square tongue and the locking tongue support plate. After the assembly is completed, the press head 13 moves down to squeeze the square tongue, thereby realizing the pressing of the square tongue and the locking tongue support plate.

[0052] The specific structures of the buffer mechanism 21 and the mold structure 22 are as follows:

[0053] The mold structure 22 includes a mold body 221 connected to the buffer mechanism 21 and two protrusions 222 symmetrically connected to the top of the mold body 221. A placement gap is provided between the two protrusions 222 for placing the square tongue and the locking tongue support plate. The top of each of the two protrusions 222 is connected to a positioning post 225. The bottom surface of the pressure head 13 is provided with a positioning hole that matches the positioning post 225. The positioning post 225 matches the positioning hole. A stop block 226 is installed on the top of the mold body 221. The stop block 226 is located between the two protrusions 222. After the square tongue is placed between the two protrusions 222, the square tongue fits against the side wall of the stop block 226. Then, the locking tongue support plate is placed between the two protrusions 222, and one side of the locking tongue support plate fits against the side wall of the square tongue. After placement, the operator operates the pressure application component 3 to apply pressure to the locking tongue support plate. The locking tongue support plate slides between the two protrusions 222 and squeezes the square tongue until one side of the locking tongue support plate is inserted into the interior of the square tongue.

[0054] The buffer mechanism 21 includes a fixed plate 211 installed on the top of the workbench 14. Fixed blocks 212 are connected to the four corners of the top surface of the mold body 221. A spring rod 213 is installed on the top of the fixed block 212. The top of the spring rod 213 is connected to the bottom surface of the mold body 221. When one side of the locking tongue support plate is inserted into the square tongue, the pressure head 13 begins to move down. The pressure head 13 fits against the top of the square tongue and pushes the square tongue to continue to move down. At this time, the mold structure 22 moves down as a whole and squeezes the spring rod 213. The spring rod 213 is compressed by force. At the same time, the positioning hole on the pressure head 13 is fitted onto the outside of the positioning post 225, thereby realizing the auxiliary positioning of the pressure head 13 and the mold structure 22. After the pressing is completed, the pressure head 13 moves up, and the spring rod 213 pushes the mold structure 22 to reset again. The operator can then remove the pressed square tongue and locking tongue support plate and place the next set of square tongue and locking tongue support plates.

[0055] The specific structure of pressure application component 3 is as follows:

[0056] The pressure application assembly 3 includes a bracket 31 mounted on the top of the workbench 14 and a base plate 32 mounted on the top of the bracket 31. A limiting seat 36 is mounted on the top of the base plate 32, and a top rod 33 passes through the inside of the limiting seat 36. A swing arm 34 is hinged to the top of the base plate 32, and a hinge plate 35 is hinged between the side wall of the swing arm 34 and one end of the top rod 33.

[0057] After the square tongue and the locking tongue support plate are placed between the two protrusions 222, the worker holds the swing arm 34 and pushes it forward. The swing arm 34 pushes the hinge plate 35 and the push rod 33 forward, causing the push rod 33 to extend horizontally forward after being limited and guided by the limit seat 36. The push rod 33 presses against the side wall of the locking tongue support plate, so that the locking tongue support plate moves forward along the gap between the two protrusions 222 to connect with the square tongue and complete the assembly. After the assembly is completed, the square tongue is pressed down by the pressure head 13 to achieve the pressing operation of the locking tongue support plate and the square tongue.

[0058] In Example 2, since the support plate and the square tongue are interference-fitted and ultimately connected, and because the positioning mold is designed for easy handling by workers, it is not constrained in the vertical direction. Therefore, when the support plate is pressed into the square tongue, if there is deformation at the end of the support plate or misalignment during interference pressing, the pressing force will cause slight elastic deformation of the support plate. The groove of the positioning mold cannot provide reverse support force to offset the deformation, which will eventually cause the support plate and the square tongue to lift up at the pressing position, or even cause the support plate to deform. Workers usually press the pressing position with their hands to ensure that the support plate and the square tongue are pressed in place, but the manual pressing force is small and cannot completely achieve the purpose of preventing lifting. Moreover, temporarily locking the vertical degree of freedom by manpower is a passive compensation measure. Long-term manual operation is not only inefficient, but also makes it easy for the hands to be squeezed by the lifting position, which poses a high safety risk.

[0059] If a limiting plate is installed above the square tongue and locking tongue support plates, it can achieve the purpose of restricting the square tongue and locking tongue support plates in the vertical direction. However, if the limiting plate is positioned by bolts, it is not convenient to remove the square tongue and locking tongue support plates after assembly. If the limiting plate is made to be slidable, although it can achieve the effect of easy handling, the worker's hands will still be in the pressing position. That is, before assembly, the worker needs to slide the limiting plate into place, and then carry out the assembly and pressing operations. Afterwards, the worker still needs to release the limiting plate's restrictive state, and then remove the pressed square tongue and locking tongue support plates. The whole process is very cumbersome.

[0060] Therefore, an adjustment mechanism 23 is connected to the top of the buffer mechanism 21. The adjustment mechanism 23 is used to restrict the square tongue and the locking tongue support plate. That is, after the square tongue and the locking tongue support plate are placed between the two protrusions 222, the adjustment mechanism 23 restricts the vertical direction of the assembly and insertion point of the square tongue and the locking tongue support plate. That is, during the subsequent process of pushing the locking tongue support plate into the square tongue by the pressure component 3, the square tongue and the locking tongue support plate are restricted by the adjustment mechanism 23 and cannot be tilted upward, thereby achieving the purpose of assembly.

[0061] The specific structure of adjustment mechanism 23 is as follows:

[0062] The adjustment mechanism 23 includes a limiting groove 223 opened on the top of two protrusions 222. Each limiting groove 223 is slidably connected to a baffle 236. The two baffles 236 are provided with an inclined surface on their opposite sides. When the square tongue and the locking tongue support plate are both placed on the top of the protrusions 222, the sliding baffles 236 are used to limit the square tongue and the locking tongue support plate. Furthermore, the inclined surface is used to fit the sides of the square tongue and the locking tongue support plate to further improve the adaptability of the limitation.

[0063] The adjustment mechanism 23 includes a vertical plate 231 connected to the top of the buffer mechanism 21. Two swing rods 232 are symmetrically hinged to one side of the vertical plate 231. The two swing rods 232 are correspondingly arranged with two baffles 236. The top of the swing rods 232 is hinged to the corresponding baffles 236. The bottom of the two swing rods 232 away from the vertical plate 231 is connected with a protruding rod 233. A connecting plate 234 is arranged below the mold body 221. Two elongated holes 235 are symmetrically opened on the side wall of the connecting plate 234. The two protruding rods 233 are correspondingly arranged with the two elongated holes 235. The protruding rods 233 are inserted into the interior of the corresponding elongated holes 235. Each elongated hole 235 is inclined. The top of the elongated hole 235 is located near the end of the connecting plate 234. The bottom of the elongated hole 235 extends towards the middle of the connecting plate 234. Two pressure plates 237 are installed on the side wall of the connecting plate 234. The ends of the pressure plates 237 extend towards the pressure application component 3.

[0064] Each baffle 236 has a sliding post 2301 connected to both sides. Each limiting groove 223 has two symmetrical sliding grooves 224 on its side wall. The sliding post 2301 on the side wall of the baffle 236 is correspondingly set with the sliding groove 224 on the side wall of the limiting groove 223. The sliding post 2301 is inserted into the corresponding sliding groove 224. During the sliding process, the baffle 236 is guided by the sliding post 2301 and the sliding groove 224 to prevent the baffle 236 from detaching inside the corresponding limiting groove 223.

[0065] With the above setup, when the operator places the square tongue and locking tongue support plate between the two protrusions 222, the operator only needs to press the pressure plate 237. The pressure plate 237 drives the connecting plate 234 to move down. The elongated hole 235 on the connecting plate 234, which is inclined, restricts and squeezes the protruding rod 233, causing the protruding rod 233 to move. At this time, the swing rod 232 changes angle in conjunction, that is, the bottom ends of the two swing rods 232 separate from each other, while the top ends move closer to each other. During this process, the top end of the swing rod 232 pushes the baffle 236 to slide towards the square tongue and locking tongue support plate, causing the baffle 236 to limit the position of the square tongue and locking tongue support plate.

[0066] Then, the staff only needs to use the pressure component 3 to apply a pushing force to the latch support plate, so that one side of the latch support plate is inserted into the square tongue to complete the assembly operation. After the assembly is completed, the pressure head 13 is used to perform the pressing operation.

[0067] After pressing is completed, the worker lifts the pressing plate 237, and the connecting plate 234 and the elongated hole 235 move upwards simultaneously. The protruding rod 233 moves in the opposite direction due to the tilt angle of the elongated hole 235. The bottom ends of the two swing rods 232 move closer to each other, while the top ends separate from each other. The baffle 236 is pulled away from the square tongue and locking tongue support plate, which makes it easier for the worker to take out the pressed square tongue and locking tongue support plate. The worker does not need to make repeated adjustments to the two baffles 236 separately, achieving the purpose of quick adjustment while ensuring easy access.

[0068] The top of the upright plate 231 is connected to two top posts 239, and the bottom of the mold body 221 has two placement holes, in which the top posts 239 are inserted.

[0069] Before the square tongue and locking tongue support plates are placed between the two protrusions 222, the operator first places the pin in the placement hole opened on the top of the mold body 221, and the pin rests on the top of the top post 239. When the pressure head 13 presses the square tongue downward, the square tongue and the mold structure 22 move down as a whole. In this state, the top post 239 moves relatively in the placement hole, thereby pushing the pin upward into the pin hole, thus realizing the pressing operation of the square tongue and locking tongue support plates.

[0070] In Example 3, the assembly and pressing processes are integrated into the same pressing equipment. However, simply combining the assembly structure and the pressing structure cannot achieve efficient and continuous operation. After integration, the assembly stage requires vertical constraint on the tongue and locking tongue support plates to prevent them from tilting. However, without a locking mechanism, the operator needs to continuously press the pressure plate 237 to maintain the constraint. This not only makes it impossible to operate the pressure component 3 simultaneously to complete the assembly, but also causes the hands to be in the pressing area for a long time, significantly increasing the safety risk. On the other hand, simple integration does not have an automatic reset and unlocking mechanism. After pressing, the constraint needs to be manually released before the part can be removed, which greatly reduces the efficiency of integration.

[0071] For this purpose, a locking mechanism 238 is installed on the top of the fixed plate 211. The top of the locking mechanism 238 is connected to the bottom of the mold body 221. When the square tongue and the locking tongue support plate need to be assembled, the operator first presses the pressure plate 237, causing the connecting plate 234 to move downward. Then, through the linkage of the elongated hole 235, the protruding rod 233 and the swing rod 232, the baffle 236 restricts the square tongue and the locking tongue support plate. While the connecting plate 234 moves downward, it drives the locking mechanism 238 to adjust to the pressing and locking state. At this time, even if the operator releases the pressure plate 237, the baffle 236 can remain in the restricted state.

[0072] When the pressure head 13 pushes the square tongue and mold structure 22 downward as a whole, the locking mechanism 238 is unlocked but remains in a restricted state. When the pressure head 13 moves upward, the locking mechanism 238 is released and reset simultaneously. This eliminates the need for the operator to repeatedly press the pressure plate 237, allowing the operator's hands to stay away from the pressing component 1 during the pressing process, thus improving the operator's safety.

[0073] The specific structure of the locking mechanism 238 is as follows:

[0074] The locking mechanism 238 includes a column 2382 installed on the top of the fixed plate 211. A slider 2381 is sleeved on the outer wall of the column 2382. A compression spring 2383 is connected between the bottom of the slider 2381 and the top of the fixed plate 211. The compression spring 2383 is sleeved on the outer wall of the column 2382. When the operator presses the pressure plate 237, the connecting plate 234 moves downward, causing the slider 2381 to slide on the outer wall of the column 2382 and compressing the compression spring 2383. At this time, the baffle 236 is adjusted to the limiting state. When the operator releases the pressure plate 237, the compression spring 2383 pushes the slider 2381 and the connecting plate 234 upward, and the baffle 236 can be released from the limiting state.

[0075] Based on this, two through slots 2387 are symmetrically opened on the outer side wall of the column 2382. A wedge block 2384 is slidably connected inside each through slot 2387. The wedge-shaped parts of the two wedge blocks 2384 are set opposite to each other. A guide hole is horizontally opened in the middle of the wedge block 2384. A positioning rod 2388 is horizontally connected between the inner walls of the two through slots 2387. The two ends of the positioning rod 2388 are respectively inserted into the guide holes on the wedge block 2384. An auxiliary spring 2389 is connected between the side wall of the two through slots 2387 and the side wall of the corresponding wedge block 2384. The auxiliary spring 2389 is sleeved on the outer wall of the positioning rod 2388.

[0076] In the initial state, the slider 2381 is in a compressive state to the wedge 2384, and the wedge 2384 is retracted inside the corresponding through groove 2387. The auxiliary spring 2389 is also in a compressive state. When the connecting plate 234 moves down, the slider 2381 slides on the outer wall of the column 2382 and compresses the compression spring 2383. The slider 2381 slides to the bottom of the through groove 2387. At this time, the wedge 2384 is in a released state. The compression spring 2383 pushes the corresponding wedge 2384 to slide out from inside the through groove 2387. At this time, the bottom of the wedge 2384 is in contact with the top of the slider 2381, and the wedge 2384 is in a blocking state to the slider 2381. At the same time, the baffle 236 restricts the square tongue and the locking tongue support plate. At this time, the operator can use the pressure application component 3 to apply pressure to the locking tongue support plate to complete the assembly of the square tongue and the locking tongue support plate.

[0077] The top of the column 2382 is fitted with a sleeve 2385, which is connected to the bottom of the mold body 221. The bottom of the sleeve 2385 has two symmetrically opened inclined parts 2386, which are correspondingly arranged with two wedges 2384. The inclination angle of the inclined parts 2386 is the same as that of the wedges 2384.

[0078] When the pressure head 13 presses against the square tongue, pressing the square tongue and locking tongue support plate together, the mold structure 22 moves downwards synchronously. At this time, the mold body 221 drives the sleeve 2385 to move downwards. The sleeve 2385 slides on the outer wall of the column 2382. When the sleeve 2385 moves downwards, the inclined part 2386 fits against the inclined surface of the wedge block 2384. As the sleeve 2385 continues to move downwards, the wedge block 2384 is compressed and shrinks into the interior of the through groove 2387. At this time, the wedge block 238... 4. Release the restriction on slider 2381. Compression spring 2383 pushes slider 2381 upward to fit against the bottom of sleeve 2385. When pressure head 13 moves upward, mold structure 22 and sleeve 2385 move upward synchronously. At this time, compression spring 2383 continues to apply upward thrust to slider 2381. Slider 2381 then re-restricts wedge block 2384. When slider 2381 moves upward, baffle 236 releases the restriction state of the tongue and locking tongue support plate.

[0079] Specifically, by setting up a locking mechanism 238, the operator presses the pressure plate 237, which drives the connecting plate 234 to move down, causing the slider 2381 to slide along the column 2382 and compress the compression spring 2383. After the slider 2381 slides to below the through groove 2387, the wedge block 2384 pops out from the through groove 2387 under the action of the auxiliary spring 2389. The bottom of the wedge block 2384 is attached to the top of the slider 2381 and blocks the slider 2381 from sliding up, thereby maintaining the restrictive state of the baffle 236 on the tongue and the locking tongue support plate.

[0080] When the pressure head 13 pushes the mold structure 22 downward, the sleeve 2385 moves downward synchronously with the mold body 221. Its inclined part 2386 squeezes the wedge block 2384, causing it to retract back into the through groove 2387, thus releasing the restriction on the slider 2381. The compression spring 2383 pushes the slider 2381 upward and it fits against the bottom of the sleeve 2385. After the pressure head 13 moves upward, the mold structure 22 and the sleeve 2385 move upward synchronously. The slider 2381 resets under the action of the compression spring 2383 and re-restricts the wedge block 2384. The baffle 236 is released from restriction. This achieves the effect of automatically maintaining and releasing the restriction state without the need for the operator to repeatedly press the pressure plate 237, and also keeps the operator's hands away from the pressing assembly 1, thus improving the safety of operation.

[0081] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A press fitting apparatus for fitting of a square tongue and a lock tongue plate, characterized by: The utility model provides a press -fitting assembly (1), limit component (2) and pressure applying component (3) are installed on press -fitting assembly (1); The press -fitting assembly (1) includes a main frame (11), a drive mechanism (12) and a workbench (14) installed on the top of the main frame (11), the limit component (2) and the pressure applying component (3) are both installed on the top of the workbench (14), the bottom of the drive mechanism (12) is connected with a pressure head (13), and the pressure head (13) is located above the limit component (2); The limit component (2) includes a buffer mechanism (21) installed on the press -fitting assembly (1), a die structure (22) and an adjusting mechanism (23) connected to the top of the buffer mechanism (21), and the adjusting mechanism (23) is located between the buffer mechanism (21) and the die structure (22); The die structure (22) includes a die main body (221) connected with the buffer mechanism (21) and two protrusions (222) symmetrically connected to the top of the die main body (221), and a limiting groove (223) is formed in the middle of the top surface of each of the two protrusions (222); The top of each of the two protrusions (222) is connected with a positioning column (225), the bottom surface of the pressure head (13) is provided with a positioning hole matched with the positioning column (225), the positioning column (225) is matched with the positioning hole, the top of the die main body (221) is provided with a stop block (226), and the stop block (226) is located between the two protrusions (222); The adjusting mechanism (23) includes a vertical plate (231) connected to the top of the buffer mechanism (21), two swing rods (232) symmetrically hinged to one side of the vertical plate (231), a baffle (236) hinged to the top end of each swing rod (232), two baffles (236) arranged correspondingly to the two limiting grooves (223), the baffle (236) slidingly connected to the inside of the corresponding limiting groove (223), and an inclined surface arranged on the side opposite to each of the two baffles (236); The side, away from the vertical plate (231), of each of the two swing rods (232) is connected with a convex rod (233), the lower side of the die main body (221) is provided with a connecting plate (234), two long holes (235) are symmetrically formed in the side wall of the connecting plate (234), the two convex rods (233) are correspondingly arranged in the two long holes (235), the convex rod (233) is inserted into the corresponding long hole (235), each long hole (235) is inclined, the top of the long hole (235) is arranged close to the end of the connecting plate (234), the bottom of the long hole (235) extends towards the middle of the connecting plate (234), and two pressing plates (237) are installed on the side wall of the connecting plate (234), and the end of the pressing plate (237) extends towards the pressure applying component (3). The pressing assembly (3) comprises a support (31) installed on the top of the workbench (14) and a bottom plate (32) installed on the top of the support (31), the top of the bottom plate (32) is provided with a limiting seat (36), the inside of the limiting seat (36) is provided with a top rod (33), the top of the bottom plate (32) is hinged with a swing arm (34), and the side wall of the swing arm (34) is hinged with a hinge plate (35) at one end of the top rod (33).

2. A press fitting apparatus for assembling a square tongue and a lock tongue support plate according to claim 1, characterized in that: The buffer mechanism (21) comprises a fixed plate (211) installed on the top of the workbench (14), and the top surface of the mold body (221) is connected with a fixed block (212) at each corner.

3. A press fitting apparatus for square tongue and lock tongue plate assembly according to claim 1, characterized in that: Both sides of each baffle (236) are connected with a sliding column (2301), and the side wall of each limiting groove (223) is symmetrically provided with two sliding grooves (224). The sliding column (2301) on the side wall of the baffle (236) is correspondingly arranged on the side wall of the corresponding limiting groove (223), the sliding column (2301) is inserted into the corresponding sliding groove (224), the top of the vertical plate (231) is connected with two top columns (239), the bottom of the mold body (221) is provided with two placing holes, and the top column (239) is inserted into the placing hole.

4. A press fitting apparatus for square tongue and lock tongue plate assembly according to claim 2, characterized in that: The top of the fixed plate (211) is provided with a lock catch mechanism (238), and the top of the lock catch mechanism (238) is connected with the bottom of the mold body (221).

5. A press fitting apparatus for square tongue and lock tongue plate assembly according to claim 4, characterized in that: The lock catch mechanism (238) comprises a vertical column (2382) installed on the top of the fixed plate (211), the outer side wall of the vertical column (2382) is sleeved with a sliding block (2381), the bottom of the sliding block (2381) and the top of the fixed plate (211) are connected with a compression spring (2383), and the compression spring (2383) is sleeved on the outer side wall of the vertical column (2382).

6. A press fitting apparatus for square tongue and lock tongue plate assembly according to claim 5, characterized in that: The outer side wall of the vertical column (2382) is symmetrically provided with two through grooves (2387), each through groove (2387) is slidably connected with a wedge block (2384), the wedge-shaped parts of the two wedge blocks (2384) are arranged away from each other, the middle part of the wedge block (2384) is horizontally provided with a guide hole, and the inner wall between the two through grooves (2387) is horizontally connected with a positioning rod (2388). The two ends of the positioning rod (2388) are respectively inserted into the guide holes on the wedge blocks (2384), the side walls between the two through grooves (2387) and the corresponding wedge blocks (2384) are connected with auxiliary springs (2389), and the auxiliary springs (2389) are sleeved on the outer wall of the positioning rod (2388). The top end of the column (2382) is sleeved with a sleeve (2385), the sleeve (2385) is connected to the bottom of the mold body (221), the bottom of the sleeve (2385) is symmetrically provided with two inclined portions (2386), the two inclined portions (2386) are correspondingly arranged with the two wedge blocks (2384), and the inclination angles of the inclined portions (2386) are same as the inclination angles of the wedge blocks (2384).

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