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CN-122002710-A - Device for reinforcing screw tooth fastening of circuit board pressing and sliding block and application method of device

CN122002710ACN 122002710 ACN122002710 ACN 122002710ACN-122002710-A

Abstract

The invention discloses a device for reinforcing screw teeth of a circuit board pressing and sliding block and a use method thereof, and particularly relates to the field of circuit board pressing and sliding block, wherein a fixing mechanism comprises a lower plate, a flat cup screw, an upper plate, a connecting structure and a connecting structure, wherein the top end of the lower plate is provided with a plurality of groups of connecting grooves I, the bottom of the lower plate is provided with a connecting groove II corresponding to the connecting groove II, a connecting hole is formed between the connecting groove I and the connecting groove II, a fixing sleeve is arranged in the connecting groove II and welded on the surface of a bearing plate, screw teeth are arranged on the inner wall of the fixing sleeve, the flat cup screw is arranged in the fixing sleeve, the surface of the flat cup screw is in threaded connection with the screw teeth on the inner wall of the fixing sleeve, the upper plate is arranged above the lower plate, a plurality of groups of countersunk hole sites corresponding to the connecting groove I are formed at the bottom of the upper plate and the lower plate, and the connecting structure is arranged between the upper plate and the lower plate.

Inventors

  • LIANG XINHONG

Assignees

  • 东莞钧钰精密金属制造有限公司

Dates

Publication Date
20260508
Application Date
20260226

Claims (10)

  1. 1. The utility model provides a device that circuit board pressfitting hinders slider to strengthen screw fastening which characterized in that, fixed establishment contains: the lower plate is provided with a plurality of groups of first connecting grooves at the top end, a second connecting groove is arranged at the corresponding position of the bottom, and a connecting hole is arranged between the first connecting groove and the second connecting groove; The flat cup screw is arranged in the fixed sleeve, and the surface of the flat cup screw is in threaded connection with the screw teeth on the inner wall of the fixed sleeve; The upper plate is arranged above the lower plate, and the bottom of the upper plate is provided with a plurality of groups of countersunk head hole sites corresponding to the first connecting groove and used for protecting the flat cup screw and fixing the flat cup screw in the first connecting groove; the connecting structure is arranged between the upper plate and the lower plate and is used for firmly connecting the upper plate and the lower plate.
  2. 2. The device for reinforcing the screw teeth by the circuit board pressing and sliding block according to claim 1, wherein the screw teeth on the inner wall of the fixing sleeve are precisely machined, and the screw pitch and the tooth angle of the fixing sleeve are optimally designed so as to ensure higher fastening force and loosening resistance when in threaded connection with the surface of the flat cup screw.
  3. 3. The device for reinforcing screw teeth by pressing and sliding blocks of circuit boards according to claim 1, wherein the flat cup screws are made of high-strength alloy steel, and the hardness and wear resistance of the flat cup screws are improved through a heat treatment process so as to adapt to thermal expansion and cold contraction stress caused by repeated temperature rise and reduction in a working environment of a hot working die.
  4. 4. The device for reinforcing screw teeth by pressing and blocking the sliding block of the circuit board according to claim 1, wherein the connecting structure between the upper plate and the lower plate is a detachable structure, and particularly a bolt and nut combination or a quick clamp is adopted, so that the upper plate and the lower plate can be quickly installed and detached.
  5. 5. The device for reinforcing screw teeth by pressing and blocking the sliding blocks of the circuit board according to claim 1, wherein a plurality of groups of groove bodies are arranged on the surface of the fixing mechanism, the fixing sleeve is welded in the groove bodies, the cross section area of a nut at one end of a flat cup screw is larger than that of the groove bodies, a placing groove is arranged at the bottom of the groove bodies, the bottom of the placing groove and the bottom of the nut are positioned on the same horizontal line, and an elastic buffer layer is arranged on the side wall of the groove bodies so as to reduce the influence of vibration and impact on the fixing mechanism.
  6. 6. The device for reinforcing screw teeth by pressing and sliding blocks of circuit boards according to claim 1, wherein springs are arranged between the upper plate and the lower plate and near the connecting structure, and are high-elasticity springs, so that more effective buffering can be provided when the bearing plate expands with heat and contracts with cold, and stress caused by the expansion with heat and the contraction with cold is relieved.
  7. 7. The device for reinforcing screw teeth by pressing and blocking the sliding block of the circuit board according to claim 1, wherein a plurality of groups of positioning protrusions are arranged on the surface of the bearing plate, and positioning grooves matched with the positioning protrusions are arranged at the bottom of the fixing mechanism, so that the fixing mechanism can be positioned and installed on the surface of the bearing plate quickly.
  8. 8. The device for reinforcing screw teeth by pressing and blocking the sliding block of the circuit board according to claim 1, wherein the welding part of the fixed sleeve and the bearing plate is provided with reinforcing ribs which are distributed in a triangle or trapezoid shape so as to improve the connection strength and stability between the fixed sleeve and the bearing plate.
  9. 9. The device for reinforcing the screw thread fastening by the circuit board pressing and sliding block according to claim 1, wherein the surface of the nut of the flat cup screw is provided with anti-slip lines, so that the tightening and loosening operations can be conveniently performed by using a tool, and the operation efficiency and the safety are improved.
  10. 10. The method for using the circuit board pressing and sliding block reinforcing screw fastener according to claim 1, which is characterized by comprising the following steps: s1, assembling: welding the fixed sleeve in the second connecting groove to ensure that the welding quality meets the standard requirement; Placing the bolt into the fixed sleeve, enabling the screw thread on the surface of the bolt to be matched with the screw tooth on the inner wall of the fixed sleeve, and performing preliminary screwing; The assembled lower plate with the fixing sleeve and the bolt is placed on the surface of the bearing plate, and the positioning protrusion and the positioning groove are utilized for quick positioning, so that the fixing sleeve is movably arranged in a groove body formed on the surface of the bearing plate, a nut at one end of the bolt is placed in a placing groove at the bottom of the groove body, and the bottom of the nut and the bottom of the placing groove are positioned on the same horizontal line; placing the upper plate above the lower plate, enabling countersunk hole sites at the bottom of the upper plate to correspond to the first connecting grooves respectively, firmly connecting the upper plate with the lower plate through the connecting structure, protecting flat cup screws by the countersunk hole sites, fixing the flat cup screws in the first connecting grooves, and finally screwing the connecting structure by using a tool; S2, in the working environment of the hot working die as the pressing jig, when the bearing plate expands with heat and contracts with cold due to repeated heating and cooling, the inner wall of the fixed sleeve is in tight threaded connection with the surface of the bolt through the screw teeth, and the buffer function of the spring resists the stress caused by the expansion with heat and contraction with cold of the bearing plate, so that the screw teeth are prevented from being damaged or loosened; s3, in the maintenance and disassembly step, when the device needs maintenance or replacement of the parts, a tool is used for loosening the connecting structure, the upper plate is separated from the lower plate, then the flat cup screw parts are disassembled and replaced, and if the fixing sleeve or the bearing plate is found to be damaged, corresponding repair or replacement operation can be carried out.

Description

Device for reinforcing screw tooth fastening of circuit board pressing and sliding block and application method of device Technical Field The invention relates to the field of circuit board pressing and blocking blocks, in particular to a device for reinforcing screw tooth fastening of a circuit board pressing and blocking block and a using method thereof. Background Under the condition that the traditional slide block fixing mode is positively locked, the bearing plate can generate so-called thermal expansion and contraction in the thickness direction of the Z direction, the bearing plate is mainly used for a hot working die, the main workload is required to repeatedly heat and cool at the temperature of about 200 to 250 ℃ every day under the condition that the hot working die is used as a pressing fixture, and the traditional slide block device still has certain problems and defects, namely: The existing anti-sliding block screw locks the anti-sliding block lower plate, the expansion of the lower plate in the Z direction is carried out every day in the thickness direction of 10-20 mm, and the screw can be stretched in material by tightening the screw, so that the screw teeth are easy to damage or loosen; The existing slide block blocking device is easy to fall off the screw or damage the screw teeth under the condition that the screw needs to be twisted frequently if the screw is loosened, and has higher cost of re-punching and tapping after the screw is damaged. The existing slide-blocking block uses screws to lock the bearing plate, and the force of the slide-blocking block is limited to the fastening force of the screws opened by the thickness of the bearing plate. 4. The existing hot working die has relatively high strength and hardness due to the need of high-temperature creep resistance, the difficulty of processing tapping on a bearing plate is quite high, and the cost of labor and materials is high due to the easiness of broken screw cones; Therefore, a device for reinforcing screw tightening of a circuit board pressing and sliding block and a using method thereof are provided for solving the above problems. Disclosure of Invention In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a device for reinforcing screw tightening of a circuit board pressing block and a method for using the same, so as to solve the above-mentioned problems in the prior art. In order to achieve the purpose, the invention provides the following technical scheme that the device for reinforcing screw tooth fastening by the circuit board pressing and sliding block and the using method thereof, wherein the fixing mechanism comprises: the lower plate is provided with a plurality of groups of first connecting grooves at the top end, a second connecting groove is arranged at the corresponding position of the bottom, and a connecting hole is arranged between the first connecting groove and the second connecting groove; The flat cup screw is arranged in the fixed sleeve, and the surface of the flat cup screw is in threaded connection with the screw teeth on the inner wall of the fixed sleeve; The upper plate is arranged above the lower plate, and the bottom of the upper plate is provided with a plurality of groups of countersunk head hole sites corresponding to the first connecting groove and used for protecting the flat cup screw and fixing the flat cup screw in the first connecting groove; the connecting structure is arranged between the upper plate and the lower plate and is used for firmly connecting the upper plate and the lower plate. Preferably, the inner wall screw teeth of the fixing sleeve are formed by precision machining, and the screw pitch and the tooth angle of the fixing sleeve are optimally designed so as to ensure higher fastening force and anti-loosening performance when in threaded connection with the surface of the flat cup screw. Preferably, the flat cup screw is made of high-strength alloy steel, and the hardness and the wear resistance of the flat cup screw are improved through a heat treatment process so as to adapt to thermal expansion and cold contraction stress caused by repeated temperature rise and reduction in a working environment of a hot working die. Preferably, the connection structure between the upper plate and the lower plate is a detachable structure, and particularly adopts a bolt and nut combination or a quick clamp, so that the upper plate and the lower plate can be quickly installed and detached. Preferably, the surface of the fixing mechanism is provided with a plurality of groups of groove bodies, the fixing sleeve is welded in the groove bodies, the cross section area of a screw cap at one end of the flat cup screw is larger than that of the groove bodies, the bottom of the groove bodies is provided with a placing groove, the bottom of the placing groove and the bottom of the screw cap are positioned on the same horizontal