A door pocket welding-free pressing device

Abstract

The application discloses a door pocket welding-free pressing device, and relates to the technical field of door pocket production, which comprises a fixed support, wherein the fixed support is provided with a frame-shaped bottom plate, a pair of horizontal plates are slidably assembled on the frame-shaped bottom plate, and the horizontal plates are provided with convex plates for placing door pocket panels; a fixed seat is installed on the top of the horizontal plate, a I-shaped sliding plate is slidably arranged in the fixed seat, and the sliding plate is connected with side pressing plates for abutting against the side surface of the door pocket panel; the fixed seat is further hingedly provided with an L-shaped pressing plate and a T-shaped pressing plate, the T-shaped pressing plate is used for pressing the top surface of the door pocket panel, and the door pocket is positioned in a welding-free pressing mode from the side and the top; the device is stable in linkage, can be self-adaptively adjusted and flexibly pressed, solves the problems of insufficient adaptability, easy damage to workpieces and low processing efficiency of traditional door pocket pressing, and is suitable for welding-free assembly of door pockets of various specifications.

Description

Technical Field

[0001] This invention relates to the field of door frame manufacturing technology, and in particular to a door frame pressing device that eliminates the need for welding. Background Technology

[0002] In the door frame manufacturing industry, weld-free assembly processes are gradually replacing traditional welding processes and becoming the mainstream method for precision door frame manufacturing. Early door frame pressing processes mostly used simple fixed fixtures, relying on manual positioning and single-point pressing and fixing. Subsequently, fixed pressing equipment was gradually developed, initially realizing mechanically assisted pressing, which improved the basic processing efficiency to a certain extent and was widely used in batch processing scenarios of small and medium-sized door frames.

[0003] Existing door frame pressing equipment still has many technical defects. Traditional equipment has poor adaptability in spacing adjustment and is difficult to adapt to the processing of door frames of various specifications. Most of them adopt rigid pressing structure, which is prone to door frame panel extrusion deformation and surface damage. Moreover, most of them are step-by-step unidirectional pressing methods, which cannot achieve synchronous pressing of the side and top. The process is cumbersome, the linkage is poor, the positioning is easy to be misaligned, and the processing yield is low, making it difficult to meet the needs of high-precision, mass production of weld-free door frames. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a door frame welding-free pressing device.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: A door frame welding-free pressing device includes a fixed bracket, a frame-shaped base plate fixedly mounted on the top surface of the fixed bracket, a pair of horizontally distributed horizontal plates slidably mounted on the front and rear sides of the top surface of the frame-shaped base plate, a convex plate fixedly mounted on the opposite side of the pair of horizontal plates, a door frame panel placed on the top surface of the pair of convex plates, and a plurality of equidistantly distributed fixing seats fixedly mounted on the top surface of the horizontal plates. The top surface of the fixed base is provided with an I-shaped sliding groove, and an I-shaped sliding plate is slidably fitted inside the I-shaped sliding groove. A T-shaped connecting plate is fixedly installed at the inner end of the I-shaped sliding plate, and a side pressure plate is slidably installed on the inner side of the T-shaped connecting plate. The pressing surface of the side pressure plate abuts against the side of the door frame panel. The inner side of the fixed base is fixedly provided with a pair of integrally formed positioning plates. The outer side of the positioning plates is hinged with L-shaped pressure plates. A T-shaped pressure plate is hinged between the top ends of each pair of L-shaped pressure plates. The pressing surface of the T-shaped pressure plate abuts against the top surface of the door frame panel, realizing the side and top welding-free pressing and positioning of the door frame panel.

[0006] Preferably, two pairs of parallel U-shaped rails are fixedly installed on both sides of the top surface of the frame-shaped base plate, and a pair of U-shaped sliding plates are fixedly installed on both sides of the bottom surface of the horizontal plate. A pair of T-shaped sliding plates are fixedly installed on the inner side walls of the U-shaped sliding plates respectively. The T-shaped sliding plates slide and engage with the corresponding U-shaped rails to form a front and rear sliding guide structure for the horizontal plate.

[0007] Preferably, axles are rotatably inserted at the four corners of the top surface of the frame-shaped base plate, and pulleys are fixedly sleeved at the top of the axles. Servo motors are fixedly installed at the left front and right front corners of the bottom surface of the frame-shaped base plate, and the motor shaft end of the servo motor is fixedly connected to the bottom end of the axle on the corresponding side.

[0008] Preferably, each pair of U-shaped rails is provided with parallel belts, the front and rear ends of the belts are fitted onto pulleys on the corresponding sides, and a pair of staggered connecting blocks are fixedly provided on the left and right sides of the belts. The top of the connecting blocks is fixedly connected to the inner top wall of the U-shaped sliding plate on the corresponding side, and the cross plate is driven to move relative to or opposite to each other through belt drive.

[0009] Preferably, a plurality of equidistantly distributed swing shafts are rotatably inserted on the top surface of the horizontal plate, and an L-shaped swing arm is fixedly sleeved on the top end of the swing shaft. A first elliptical pin hole is opened on the inner end of the L-shaped swing arm. A fixed connecting plate is fixedly installed on the outer end of the I-shaped slide plate, and a fixed pin is fixedly inserted on the outer end of the fixed connecting plate. The top end of the fixed pin is slidably inserted into the first elliptical pin hole on the corresponding side.

[0010] Preferably, a hydraulic telescopic cylinder is fixedly installed in the middle of the top surface of the horizontal plate, and a T-shaped seat is fixedly provided at the end of the telescopic rod of the hydraulic telescopic cylinder. A pair of hinged connecting rods are hinged to both ends of the T-shaped seat, and an extension connecting rod is hinged to the outer end of the hinged connecting rod. The extension connecting rod is sequentially hinged to the outer ends of several L-shaped swing arms on the same side to form a synchronous linkage structure of multiple sets of L-shaped swing arms.

[0011] Preferably, a pair of integrally formed fixing lugs are fixedly provided on both sides of the top surface of the fixing seat, a triangular connecting plate is hinged to the top of the fixing lugs, a driven connecting rod is hinged to the corner of the L-shaped pressure plate, and the outer end of the driven connecting rod is movably hinged to one end of the triangular connecting plate.

[0012] Preferably, a second elliptical pin hole is provided at the other end of the triangular connecting plate, and a widened ear seat is fixedly provided at the middle of the top surface of the I-shaped sliding plate. A through-distributed limiting pin is inserted at the top of the widened ear seat, and the two ends of the limiting pin are slidably inserted into the second elliptical pin hole on the corresponding side.

[0013] Preferably, a pair of limiting sliding holes are provided at both ends of the T-shaped connecting plate, and a pair of T-shaped sliding holes are provided on both sides of the fixing seat. A T-shaped sliding rod is slidably inserted into the limiting sliding hole, and the outer end of the T-shaped sliding rod is slidably inserted into the T-shaped sliding hole on the corresponding side. The inner end of the T-shaped sliding rod is fixedly connected to the side pressure plate, and a tension spring is sleeved on the inner section of the T-shaped sliding rod.

[0014] Preferably, a connecting horizontal shaft is fixedly inserted through the top of the T-shaped pressure plate, and the two ends of the connecting horizontal shaft are rotatably inserted into the top of a pair of corresponding L-shaped pressure plates. A pair of torsion springs are sleeved on both sides of the connecting horizontal shaft, and the two ends of the torsion springs are respectively fixed to the T-shaped pressure plate and the corresponding L-shaped pressure plate. Anti-slip grooves are provided on the inner side of the side pressure plate and the bottom surface of the T-shaped pressure plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the adaptively adjustable horizontal plate spacing structure, through the linkage of servo motor and belt drive components, drives the horizontal plate to move smoothly and accurately, which can adapt to the positioning and processing needs of door frame panels of different widths; the automated spacing adjustment mode replaces manual adjustment, with high adjustment accuracy and wide adaptability, effectively reducing the intensity of manual operation and improving the versatility of the device. 2. In this invention, a two-way elastic pressing structure with sides and top is adopted. The flexible pressing operation is achieved by relying on tension springs and torsion springs, which can effectively buffer the pressing pressure. It eliminates the door frame panel bumps and deformation damage problems that are easily caused by traditional rigid pressing methods. Combined with the anti-slip groove structure, it greatly improves the stability of workpiece pressing and positioning and the processing yield. 3. In this invention, multiple pressing components are synchronously linked through a hydraulic linkage structure, which can complete the synchronous pressing and positioning of the door frame panel on the side and top in one go; the various transmission structures are precisely matched and have strong linkage consistency, eliminating the step-by-step pressing operation mode, simplifying the processing procedures, and significantly improving the overall operation efficiency of the door frame welding-free pressing process; In summary, the present invention has excellent structural linkage and stability, and has multiple advantages such as adaptive adjustment, flexible pressing, and synchronous operation. It effectively solves the pain points of poor adaptability, easily damaged workpieces, and low efficiency of traditional door frame pressing processing. It is suitable for batch welding-free assembly processing of door frames of various specifications, and has extremely high practicality and promotion value. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the overall structure of the present invention (excluding the door frame panel); Figure 3 For the present invention Figure 2 Explosion-proof diagram of the structure; Figure 4 This is an exploded view of the frame-shaped base plate and two pairs of U-shaped translation plates of the present invention; Figure 5 This is an exploded view of the pair of horizontal plate structures of the present invention; Figure 6 This is an exploded view of a pair of fixed base structures of the present invention; In the diagram, the following are the item numbers: 100, Fixed bracket; 101, Frame-shaped base plate; 102, U-shaped rail; 103, U-shaped sliding plate; 104, T-shaped sliding plate; 105, Axle; 106, Pulley; 107, Belt; 108, Connecting block; 109, Servo motor; 110, Door frame panel; 200, Horizontal plate; 201, Protruding plate; 202, Hydraulic telescopic cylinder; 203, T-shaped seat; 204, Hinge connecting rod; 205, Swing shaft; 206, L-shaped swing arm; 207, First elliptical pin hole; 208, Extension. 209. Connecting rod; 210. Fixed connecting plate; 300. Fixed seat; 301. Fixed lug; 302. Positioning plate; 303. Triangular connecting plate; 304. Second elliptical pin hole; 305. Driven connecting rod; 306. L-shaped pressure plate; 307. Connecting horizontal shaft; 308. Torsion spring; 309. T-shaped pressure plate; 400. I-shaped sliding plate; 401. Widened lug; 402. Limiting pin; 403. T-shaped connecting plate; 404. Side pressure plate; 405. T-shaped sliding rod; 406. Tension spring. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Example: This example provides a door frame welding-free pressing device, see [link to example]. Figures 1 to 6 Specifically, the device includes a fixed bracket 100, on the top surface of which a frame-shaped base plate 101 is fixedly mounted. A pair of horizontally distributed horizontal plates 200 are slidably mounted on the front and rear sides of the top surface of the frame-shaped base plate 101. A convex plate 201 is fixedly mounted on the opposite side of the pair of horizontal plates 200. A door frame panel 110 is placed on the top surface of the pair of convex plates 201. Several equally spaced fixed seats 300 are fixedly mounted on the top surface of the horizontal plates 200. The fixed bracket 100 and the frame-shaped base plate 101 constitute the basic support structure of the device. The horizontal plates 200 can be slidably adjusted in spacing. The convex plates 201 can stably support the door frame panel 110. The fixed seats 300 are regularly distributed, providing a stable foundation for the subsequent installation of pressing components and workpiece positioning. The top surface of the fixed base 300 is provided with an I-shaped groove, and an I-shaped sliding plate 400 is slidably fitted inside the I-shaped groove. A T-shaped connecting plate 403 is fixedly installed at the inner end of the I-shaped sliding plate 400, and a side pressure plate 404 is slidably installed on the inner side of the T-shaped connecting plate 403. The pressing surface of the side pressure plate 404 abuts against the side of the door frame panel 110. The fixed base 300 can achieve stable displacement of the component by sliding with the I-shaped groove and the I-shaped sliding plate 400. With the T-shaped connecting plate 403 and the side pressure plate 404 installed, it can flexibly fit the side of the door frame panel 110 and complete the lateral precise pressing and positioning. The T-shaped connecting plate 403 has a pair of limiting sliding holes at both ends, and the fixing seat 300 has a pair of T-shaped sliding holes on both sides. A T-shaped sliding rod 405 is slidably inserted into the limiting sliding hole. The outer end of the T-shaped sliding rod 405 is slidably inserted into the T-shaped sliding hole on the corresponding side. The inner end of the T-shaped sliding rod 405 is fixedly connected to the side pressure plate 404. A tension spring 406 is sleeved on the inner section of the T-shaped sliding rod 405. The limiting sliding holes of the T-shaped connecting plate 403, the T-shaped sliding holes of the fixing seat 300, and the T-shaped sliding rod 405 slide in cooperation with the tension spring 406 to achieve flexible pressing of the side pressure plate 404, buffer the extrusion pressure, avoid damage to the door frame panel 110 under pressure, and ensure the pressing quality. A pair of integrally formed positioning plates 302 are fixedly installed on the inner side of the fixed base 300. An L-shaped pressure plate 306 is hinged to the outer side of the positioning plate 302. A T-shaped pressure plate 309 is hinged between the top ends of each pair of L-shaped pressure plates 306. The pressing surface of the T-shaped pressure plate 309 abuts against the top surface of the door frame panel 110, realizing the side and top welding-free pressing and positioning of the door frame panel 110. The positioning plate 302 of the fixed base 300 is hinged to the L-shaped pressure plate 306, and the pair of L-shaped pressure plates 306 are hinged to the T-shaped pressure plate 309, which can press the top of the door frame panel 110. With the side pressing structure, the workpiece can be positioned by two-way welding-free pressing and positioning on the side and top. A connecting horizontal shaft 307 is fixedly inserted through the top of the T-shaped pressure plate 309. The two ends of the connecting horizontal shaft 307 are rotatably inserted into the top of a pair of corresponding L-shaped pressure plates 306. A pair of torsion springs 308 are sleeved on both sides of the connecting horizontal shaft 307. The two ends of the torsion springs 308 are fixedly connected to the T-shaped pressure plate 309 and the corresponding L-shaped pressure plate 306, respectively. Anti-slip grooves are provided on the inner side of the side pressure plate 404 and the bottom surface of the T-shaped pressure plate 309. The connecting horizontal shaft 307 allows the T-shaped pressure plate 309 to rotate flexibly. The torsion springs 308 provide elastic buffering and restoring force. The anti-slip grooves of the side pressure plate 404 and the T-shaped pressure plate 309 effectively prevent the door frame panel 110 from shifting and slipping when pressed.

[0019] In the specific implementation process, such as Figure 3 and Figure 4As shown, two pairs of parallel U-shaped rails 102 are fixedly installed on both sides of the top surface of the frame-shaped base plate 101, and a pair of U-shaped sliding plates 103 are fixedly installed on both sides of the bottom surface of the horizontal plate 200. A pair of T-shaped sliding plates 104 are fixedly installed on the inner side walls of the U-shaped sliding plates 103 respectively. The T-shaped sliding plates 104 slide and engage with the corresponding U-shaped rails 102, forming a front-to-back sliding guide structure for the horizontal plate 200. The U-shaped rails 102 of the frame-shaped base plate 101 slide and engage with the U-shaped sliding plates 103 and T-shaped sliding plates 104 at the bottom of the horizontal plate 200 to form a precise guide structure, ensuring that the horizontal plate 200 slides smoothly back and forth without deviation, and improving the accuracy of spacing adjustment. Axles 105 are rotatably inserted at the four corners of the top surface of the frame-shaped base plate 101. A pulley 106 is fixedly sleeved at the top of the axle 105. A servo motor 109 is fixedly installed at the left front and right front corners of the bottom surface of the frame-shaped base plate 101. The motor shaft end of the servo motor 109 is fixedly connected to the bottom end of the axle 105 on the corresponding side. The corner axles 105 and pulleys 106 of the frame-shaped base plate 101, together with the servo motor 109, can provide a stable power source, provide power support for the automatic adjustment of the spacing of the horizontal plate 200, realize automated control, and reduce the intensity of manual operation. Each pair of U-shaped rails 102 is provided with parallel belts 107. The front and rear ends of the belts 107 are fitted onto the corresponding pulleys 106. A pair of staggered connecting blocks 108 are fixedly provided on the left and right sides of the belts 107. The top of the connecting blocks 108 is fixed to the inner top wall of the corresponding U-shaped sliding plate 103. The belts 107 drive the horizontal plate 200 to move relative to or in opposite directions. The belts 107 and pulleys 106 realize cyclic transmission. Through the staggered connecting blocks 108 and the linkage of the U-shaped sliding plate 103, the horizontal plate 200 can be precisely driven to move relative to or in opposite directions, which can meet the positioning requirements of door frame panels 110 of different widths.

[0020] In the specific implementation process, such as Figure 5 and Figure 6 As shown, a plurality of equidistantly distributed swing shafts 205 are rotatably inserted on the top surface of the horizontal plate 200. An L-shaped swing arm 206 is fixedly sleeved at the top end of the swing shaft 205. A first elliptical pin hole 207 is opened at the inner end of the L-shaped swing arm 206. A fixed connecting plate 209 is fixedly installed at the outer end of the I-shaped slide plate 400. A fixed pin 210 is fixedly inserted at the outer end of the fixed connecting plate 209. The top end of the fixed pin 210 is slidably inserted into the first elliptical pin hole 207 on the corresponding side. The swing shafts 205 and L-shaped swing arms 206 of the horizontal plate 200 cooperate with the fixed connecting plate 209 and fixed pin 210 through the first elliptical pin hole 207, which can convert the swing arm swing into linear tension, drive the I-shaped slide plate 400 to slide smoothly, and has strong transmission adaptability. A hydraulic telescopic cylinder 202 is fixedly installed in the middle of the top surface of the horizontal plate 200. A T-shaped seat 203 is fixedly installed at the end of the telescopic rod of the hydraulic telescopic cylinder 202. A pair of hinged connecting rods 204 are hinged to both ends of the T-shaped seat 203. An extension connecting rod 208 is hinged to the outer end of the hinged connecting rod 204. The extension connecting rod 208 is movably hinged to the outer ends of several L-shaped swing arms 206 on the same side, forming a synchronous linkage structure of multiple sets of L-shaped swing arms 206. The hydraulic telescopic cylinder 202, T-shaped seat 203, hinged connecting rod 204, and extension connecting rod 208 form a synchronous linkage structure, which can drive multiple sets of L-shaped swing arms 206 to move synchronously, ensuring the consistency of linkage of multiple sets of pressing components and improving the overall pressing efficiency. A pair of integrally formed fixed lugs 301 are fixedly installed on both sides of the top surface of the fixed base 300. A triangular connecting plate 303 is hinged to the top of the fixed lug 301. A driven connecting rod 305 is hinged to the corner of the L-shaped pressure plate 306. The outer end of the driven connecting rod 305 is movably hinged to one end of the triangular connecting plate 303. The fixed lug 301 is hinged to the triangular connecting plate 303. The triangular connecting plate 303 is linked to the L-shaped pressure plate 306 through the driven connecting rod 305 to form a stable transmission link. It can accurately drive the L-shaped pressure plate 306 to swing, providing stable transmission support for top pressing. The other end of the triangular connecting plate 303 is provided with a second elliptical pin hole 304. A widened ear seat 401 is fixedly provided in the middle of the top surface of the I-shaped slide plate 400. A through-type limiting pin 402 is inserted into the top of the widened ear seat 401. The two ends of the limiting pin 402 are slidably inserted into the second elliptical pin hole 304 on the corresponding side. The widened ear seat 401, the limiting pin 402 and the second elliptical pin hole 304 are slidably engaged, and can accurately limit the transmission with the displacement of the I-shaped slide plate 400, and synchronously trigger the top pressing structure to achieve synchronous linkage operation of side pressing and top pressing.

[0021] It should be noted that during the operation of this embodiment, the spacing of a pair of horizontal plates 200 is first adjusted according to the actual width of the door frame panel 110 to be processed. The specific adjustment process is as follows: the servo motors 109 installed at the left front and right front corners of the bottom surface of the frame-shaped base plate 101 are started. The motor shaft of the servo motor 109 drives the corresponding axle 105 and the pulley 106 fixedly sleeved on the top of the axle 105 to rotate synchronously, thereby driving the belt 107 sleeved on the pulley 106 and distributed in parallel to circulate.

[0022] Relying on the connecting blocks 108 that are staggered on the left and right sides of the belt 107, the transmission power of the belt 107 is transmitted to the U-shaped sliding plate 103 fixed at the top. This drives the U-shaped sliding plate 103 to slide smoothly along the U-shaped rails 102 fixed on both sides of the top surface of the frame base plate 101 through the T-shaped sliding plate 104 fixed on the inner side wall. This achieves the relative or opposite displacement of a pair of horizontal plates 200, accurately adapting to the installation and positioning requirements of door frame panels 110 of different widths. After the spacing adjustment is completed, the servo motor 109 is turned off.

[0023] After the spacing of the horizontal plates 200 is adjusted to the correct position, the door frame panel 110 to be pressed is placed stably on the top surface of the convex plate 201 fixedly set on the opposite side of the pair of horizontal plates 200, thus completing the initial bearing and positioning of the workpiece.

[0024] Then, the hydraulic telescopic cylinder 202, which is fixedly installed in the middle of the top surface of the horizontal plate 200, is activated. The telescopic rod of the hydraulic telescopic cylinder 202 extends, which drives the T-shaped seat 203 fixed at the end to move forward synchronously. The pair of hinged connecting rods 204 at both ends of the T-shaped seat 203 extend outward, thereby driving the extended connecting rod 208 at the outer end of the hinged connecting rod 204 to move synchronously.

[0025] By using the extended connecting rod 208 to engage with the movable hinged ends of several L-shaped swing arms 206 on the same side, multiple sets of L-shaped swing arms 206 can be synchronously hinged and swing around the swing axes 205 equidistantly distributed on the top surface of the horizontal plate 200. During the swinging process of the L-shaped swing arm 206, the first elliptical pin hole 207 opened at its inner end forms a sliding limit engagement with the fixed pin 210 fixedly inserted at the outer end of the fixed connecting plate 209. The fixed connecting plate 209 pulls the I-shaped slide plate 400, causing it to slide smoothly inward along the I-shaped slide groove opened on the top surface of the fixed seat 300.

[0026] When the I-shaped sliding plate 400 slides inward, it drives the T-shaped connecting plate 403 fixed at the inner end to move synchronously, thereby pushing the side pressure plate 404, which is slidably set on the inner side of the T-shaped connecting plate 403, to gradually fit and press against the side of the door frame panel 110, realizing the lateral positioning and pressing of the door frame panel 110. As the I-shaped sliding plate 400 continues to feed inward, the distance between the side pressure plate 404 and the T-shaped connecting plate 403 continues to decrease, driving the T-shaped sliding rod 405 to slide inward along the T-shaped sliding holes on both sides of the fixed seat 300 and the limiting sliding holes at both ends of the T-shaped connecting plate 403. This causes the tension spring 406 sleeved in the inner section of the T-shaped sliding rod 405 to undergo compression deformation. The elastic tension of the tension spring 406 is used to achieve lateral flexible pressing, avoiding rigid compression damage to the door frame panel 110. At the same time, the anti-slip groove opened on the inner side of the side pressure plate 404 can effectively improve the pressing anti-slip effect and prevent the workpiece from shifting.

[0027] As the I-shaped sliding plate 400 slides inward to complete the lateral pressing, the widened lug 401 fixed in the middle of its top surface moves synchronously with it. The limiting pin 402 inserted through the top of the widened lug 401 slides and limits the sliding inside the second elliptical pin hole 304 at the end of the triangular connecting plate 303 that is integrally formed on both sides of the top surface of the fixed base 300 and hinged to the top of the fixed lug 301. This pulls the triangular connecting plate 303 to rotate around the hinge point. During the rotation of the triangular connecting plate 303, the driven connecting rod 305 with the end hinged to the end drives the L-shaped pressure plate 306 to swing downward around the hinge point on the outside of the positioning plate 302.

[0028] When a pair of L-shaped pressure plates 306 swing downwards synchronously, they drive the T-shaped pressure plate 309, which is hinged at its top, to press down as a whole, so that the pressing surface of the T-shaped pressure plate 309 tightly abuts against the top surface of the door frame panel 110, completing the top pressing and positioning of the door frame panel 110. During the process, the torsion springs 308 sleeved on both sides of the connecting horizontal shaft 307 are fixedly connected at both ends to the T-shaped pressure plate 309 and the corresponding L-shaped pressure plate 306, respectively. The torsion of the torsion springs 308 realizes the elastic buffering and automatic reset of the top pressing. At the same time, the anti-slip groove opened on the bottom surface of the T-shaped pressure plate 309 further enhances the stability of the top pressing.

[0029] In summary, through the coordinated operation of various structures, this device can simultaneously complete the side and top bidirectional weld-free pressing and positioning of the door frame panel 110. The pressing process is flexible and controllable, with precise positioning and strong stability, effectively meeting the processing requirements of weld-free assembly of the door frame.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A door frame weld-free pressing device, comprising a fixed bracket (100), characterized in that: A frame-shaped base plate (101) is fixedly installed on the top surface of the fixed bracket (100). A pair of horizontal plates (200) are slidably installed on the front and rear sides of the top surface of the frame-shaped base plate (101). A convex plate (201) is fixedly installed on the opposite side of the pair of horizontal plates (200). A door frame panel (110) is placed on the top surface of the pair of convex plates (201). A number of fixed seats (300) are fixedly installed on the top surface of the horizontal plates (200). The top surface of the fixed base (300) is provided with an I-shaped groove, and an I-shaped sliding plate (400) is slidably fitted inside the I-shaped groove. A T-shaped connecting plate (403) is fixedly installed at the inner end of the I-shaped sliding plate (400). A side pressure plate (404) is slidably installed on the inner side of the T-shaped connecting plate (403). The pressing surface of the side pressure plate (404) abuts against the side of the door frame panel (110). A pair of positioning plates (302) are fixedly provided on the inner side of the fixed base (300). An L-shaped pressure plate (306) is hinged to the outer side of the positioning plate (302). A T-shaped pressure plate (309) is hinged between the top ends of each pair of L-shaped pressure plates (306). The pressing surface of the T-shaped pressure plate (309) abuts against the top surface of the door frame panel (110).

2. The door frame weld-free pressing device according to claim 1, characterized in that: Two pairs of U-shaped rails (102) are fixedly installed on both sides of the top surface of the frame-shaped base plate (101), and a pair of U-shaped sliding plates (103) are fixedly installed on both sides of the bottom surface of the horizontal plate (200). A pair of T-shaped sliding plates (104) are fixedly installed on the inner side walls of the U-shaped sliding plates (103), and the T-shaped sliding plates (104) slide and fit into the corresponding U-shaped rails (102).

3. The door frame weld-free pressing device according to claim 2, characterized in that: Axles (105) are rotatably inserted at the four corners of the top surface of the frame-shaped base plate (101). A pulley (106) is fixedly sleeved at the top of the axle (105). A servo motor (109) is fixedly installed at the left front and right front corners of the bottom surface of the frame-shaped base plate (101). The motor shaft end of the servo motor (109) is fixedly connected to the bottom end of the axle (105) on the corresponding side.

4. The door frame welding-free pressing device according to claim 3, characterized in that: A belt (107) is provided between each pair of U-shaped rails (102). The front and rear ends of the belt (107) are fitted onto the corresponding pulleys (106). A pair of staggered connecting blocks (108) are fixedly provided on the left and right sides of the belt (107). The top of the connecting block (108) is fixedly connected to the inner top wall of the U-shaped translation plate (103) on the corresponding side.

5. The door frame weld-free pressing device according to claim 1, characterized in that: A plurality of swing shafts (205) are rotatably inserted on the top surface of the horizontal plate (200). An L-shaped swing arm (206) is fixedly sleeved on the top end of the swing shaft (205). A first elliptical pin hole (207) is opened on the inner end of the L-shaped swing arm (206). A fixed connecting plate (209) is fixedly installed on the outer end of the I-shaped slide plate (400). A fixed pin (210) is fixedly inserted on the outer end of the fixed connecting plate (209). The top end of the fixed pin (210) is slidably inserted into the first elliptical pin hole (207).

6. The door frame weld-free pressing device according to claim 5, characterized in that: A hydraulic telescopic cylinder (202) is fixedly installed in the middle of the top surface of the horizontal plate (200). A T-shaped seat (203) is fixedly installed at the end of the telescopic rod of the hydraulic telescopic cylinder (202). A pair of hinged connecting rods (204) are hinged at both ends of the T-shaped seat (203). An extension connecting rod (208) is hinged at the outer end of the hinged connecting rod (204). The extension connecting rod (208) is movably hinged to the outer ends of several L-shaped swing arms (206) on the same side.

7. The door frame weld-free pressing device according to claim 1, characterized in that: A pair of fixed lugs (301) are fixedly provided on both sides of the top surface of the fixed base (300). A triangular connecting plate (303) is hinged to the top of the fixed lugs (301). A driven connecting rod (305) is hinged to the corner of the L-shaped pressure plate (306). The outer end of the driven connecting rod (305) is movably hinged to one end of the triangular connecting plate (303).

8. A door frame weld-free pressing device according to claim 7, characterized in that: The other end of the triangular connecting plate (303) is provided with a second elliptical pin hole (304). The top surface of the I-shaped sliding plate (400) is fixedly provided with a widened ear seat (401). The top end of the widened ear seat (401) is provided with a through-distributed limiting pin (402). The two ends of the limiting pin (402) are slidably inserted into the second elliptical pin hole (304) on the corresponding side.

9. A door frame weld-free pressing device according to claim 1, characterized in that: The two ends of the T-shaped connecting plate (403) are provided with a pair of limiting sliding holes, and the two sides of the fixed seat (300) are provided with a pair of T-shaped sliding holes. A T-shaped sliding rod (405) is slidably inserted into the limiting sliding hole. The outer end of the T-shaped sliding rod (405) is slidably inserted into the T-shaped sliding hole on the corresponding side. The inner end of the T-shaped sliding rod (405) is fixedly connected to the side pressure plate (404). A tension spring (406) is sleeved on the inner section of the T-shaped sliding rod (405).

10. A door frame weld-free pressing device according to claim 1, characterized in that: A connecting horizontal shaft (307) is fixedly inserted into the top of the T-shaped pressure plate (309). The two ends of the connecting horizontal shaft (307) are rotatably inserted into the top of a pair of corresponding L-shaped pressure plates (306). A pair of torsion springs (308) are sleeved on both sides of the connecting horizontal shaft (307). The two ends of the torsion springs (308) are respectively fixed to the T-shaped pressure plate (309) and the corresponding L-shaped pressure plate (306). Anti-slip grooves are provided on the inner side of the side pressure plate (404) and the bottom surface of the T-shaped pressure plate (309).

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