Dispensing and holding pressure system and holding pressure device with time traceability function

Abstract

This invention discloses a dispensing and pressure-holding system and a pressure-holding device with time traceability function, including a dispensing and pressure-holding fixture, a dispensing device, and a pressure-holding device for pressing a second workpiece onto a first workpiece on the dispensing and pressure-holding fixture. One side of the first workpiece has an identification mark. A first acquisition window is formed on the dispensing and pressure-holding fixture at a position corresponding to the identification mark. The system also includes a control system; a first acquisition unit for acquiring the identification mark on the first workpiece through the first acquisition window before or during the application of adhesive to the first workpiece, and sending the acquired identification mark and its first acquisition time to the control system; and a second acquisition unit for acquiring the identification mark on the first workpiece through the first acquisition window before applying pressure to the first and second workpieces, and sending the acquired identification mark and its second acquisition time to the control system.

Description

Technical Field

[0001] This invention relates to the field of dispensing and pressure holding processing of workpieces, and particularly to a dispensing and pressure holding system and pressure holding device with time traceability function. Background Technology

[0002] In the process of bonding the first workpiece to the second workpiece and fixing it under pressure, an adhesive dispensing device is used to apply adhesive to the bonding surface of the first workpiece. After adhesive application, the second workpiece is placed on the bonding surface of the first workpiece, and then the bonded first and second workpieces are placed in a pressure-holding device to ensure a firm bond. During the time between adhesive application and placement in the pressure-holding device, the curing characteristics of the adhesive vary depending on the time. If the placement in the pressure-holding device is delayed, it can easily affect the bonding stability of the first and second workpieces, leading to product defects and reduced product quality. To solve this technical problem, the traditional method involves manually using a stopwatch to check the time. This method is mechanical, wasteful of manpower, and prone to errors, resulting in the first and second workpieces being placed in the pressure-holding device after the specified time, thus reducing product quality. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a dispensing and pressure holding system and pressure holding device with time traceability function that improves the accuracy of time traceability, has a simple and reliable structure, saves manpower, and improves product quality.

[0004] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: providing a dispensing and pressure-holding system with time traceability function, including a dispensing and pressure-holding fixture, a dispensing device for applying glue to the bonding surface of a first workpiece on the dispensing and pressure-holding fixture, and a pressure-holding device for pressing a second workpiece onto the first workpiece on the dispensing and pressure-holding fixture, wherein an identification mark is formed on one side of the first workpiece; a first acquisition window is formed on the dispensing and pressure-holding fixture at a position corresponding to the identification mark; the dispensing and pressure-holding system with time traceability function further includes: a control system; and a first acquisition unit, disposed on the dispensing device, for acquiring the second workpiece through the first acquisition window before or at the time the glue is applied to the first workpiece. The system includes a first acquisition unit and a second acquisition unit, which are mounted on the pressure holding device. The first acquisition unit acquires the identification mark on the first workpiece through the first acquisition window before pressurizing the first and second workpieces, and sends the acquired identification mark and its second acquisition time to the control system. The control system compares the identification mark and its second acquisition time acquired by the second acquisition unit with the identification mark and its first acquisition time acquired by the first acquisition unit. If the identification marks are the same and the absolute value of the difference between the first acquisition time and the second acquisition time does not exceed a preset threshold, the pressure holding device is then set to work normally.

[0005] Furthermore, the control system is also used to control the pressure holding device to stop working when the identity identifiers are different or when the absolute value of the difference between the first acquisition time and the second acquisition time exceeds a preset threshold.

[0006] Furthermore, the first workpiece is a metal workpiece; the dispensing and pressure holding fixture includes a fixture table and a workpiece positioning table formed on the fixture table. The shape of the table surface of the workpiece positioning table is adapted to the shape of the first workpiece, and the workpiece positioning table has a plurality of receiving grooves spaced apart along its length direction. A magnetic suction element for adsorbing the first workpiece is fixed in the receiving groove, and the bottom surface of the magnetic suction element is not higher than the table surface of the workpiece positioning table.

[0007] Furthermore, the first workpiece has a semi-circular cross-section, with a flat surface and an arc surface. The arc surface serves as an adhesive surface and is bonded to the second workpiece. The identification mark is formed on the flat surface, which is placed on the workpiece positioning table. The second workpiece has an arc-shaped cross-section, with an arc-shaped top wall, a first side wall formed on one side of the arc-shaped top wall, and a second side wall formed on the other side of the arc-shaped top wall. The first side wall, the second side wall, and the arc-shaped top wall together form a U-shaped inner cavity. The bottom edges of the first side wall and the second side wall are lower than the flat surface. When the first workpiece is placed on the workpiece positioning table, the shapes of the first workpiece and the workpiece positioning table are adapted to the U-shaped inner cavity shape of the second workpiece.

[0008] Furthermore, the first workpiece includes a split first metal block, a second metal block, and a third metal block, which are placed on the surface of the workpiece positioning table along the length of the workpiece positioning table. A first positioning groove is formed on the workpiece positioning table at a position corresponding to the location between the first metal block and the second metal block, and a first positioning block with a height adapted to the height of the first metal block and the second metal block is provided in the first positioning groove. A second positioning groove is formed on the workpiece positioning table at a position corresponding to the location between the second metal block and the third metal block, and a second positioning block with a height adapted to the height of the second metal block and the third metal block is provided in the second positioning groove.

[0009] Furthermore, at least one first groove is provided on the jig table on the lateral side of the workpiece positioning table, and the first groove is connected to one side wall of the workpiece positioning table in the direction facing the workpiece positioning table; at least one second groove is provided on the jig table on the other lateral side of the workpiece positioning table, corresponding to the at least one first groove, and the at least one second groove is connected to the other side wall of the workpiece positioning table in the direction facing the other side of the workpiece positioning table.

[0010] Furthermore, a first recessed groove is formed on one side of the workpiece positioning stage, extending inward to the opposite side. The first recessed groove extends through the workpiece positioning stage from its height direction. A second recessed groove is formed on the other side of the workpiece positioning stage, extending inward to the opposite side. The second recessed groove extends through the workpiece positioning stage from its height direction. A first lower groove is formed on the fixture stage at a position corresponding to the first recessed groove. The first lower groove communicates with the first recessed groove to form a first mounting groove. A first elastic member and a first top member are sequentially arranged in the first mounting groove from bottom to top. The first top member is partially accommodated in the first recessed groove so that it can move along the height direction of the workpiece positioning stage in the first recessed groove under the action of the first elastic member. A second lower groove is formed on the fixture stage at a position corresponding to the second recessed groove. The second lower groove communicates with the second recessed groove to form a second mounting groove. A second elastic member and a second top member are sequentially arranged in the second mounting groove from bottom to top. The second top member is partially accommodated in the second recessed groove so that it can move along the height direction of the workpiece positioning stage in the second recessed groove under the action of the second elastic member.

[0011] Furthermore, the pressure holding device includes a worktable, a positioning module disposed on the worktable for positioning the dispensing pressure holding fixture, and a pressing module mounted on the worktable and located directly above the dispensing pressure holding fixture; a second acquisition window is formed on the worktable at a position corresponding to the first acquisition window of the dispensing pressure holding fixture, and the second acquisition unit sequentially acquires the identification mark on the first workpiece through the second acquisition window and the first acquisition window.

[0012] Furthermore, the pressure holding device also includes a first track and a linear drive mechanism disposed on the worktable. The positioning module is slidably disposed on the first track and connected to the output shaft of the linear drive mechanism. A portion of the first track is located directly below the pressing module to form a pressure holding working position, and the other portion of the first track outside the pressure holding working position forms a material loading position for the dispensing pressure holding fixture. The linear drive mechanism is used to drive the positioning module to reciprocate between the material loading position of the dispensing pressure holding fixture and the pressure holding working position. The position of the second acquisition window corresponds to the position of the first acquisition window on the dispensing pressure holding fixture at the material loading position of the dispensing pressure holding fixture.

[0013] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is: providing a pressure holding device with dispensing time traceability function, including a worktable, a positioning module disposed on the worktable, a dispensing and pressure holding fixture positioned on the positioning module, and a pressing module mounted above the worktable. The dispensing and pressure holding fixture has a first workpiece with adhesive applied to it and a second workpiece placed on the bonding surface of the first workpiece. A first acquisition window is formed on the dispensing and pressure holding fixture at a position corresponding to the identification mark on the first workpiece. The pressure holding device also includes a control system and a second acquisition unit. A second acquisition window is formed on the worktable at a position corresponding to the first acquisition window. The second acquisition unit is used to sequentially acquire the identification mark on the first workpiece through the second acquisition window and the first acquisition window. The control system is used to receive the identification mark and first acquisition time of the first workpiece sent by the dispensing device and to receive the identification mark and second acquisition time of the first workpiece acquired by the second acquisition unit, and to compare the two acquisition information. If the identification marks are the same and the absolute value of the difference between the first acquisition time and the second acquisition time does not exceed a preset threshold, the pressure holding device operates normally.

[0014] This invention relates to a dispensing and pressure-holding system and device with time-reversal functionality. It improves the dispensing and pressure-holding fixture to form a first acquisition window, creates an identification mark on the first workpiece corresponding to the first acquisition window, sets a first acquisition unit at the corresponding position of the dispensing device, sets a second acquisition unit and a second acquisition window at the corresponding position of the pressure-holding device, and establishes a control system at the pressure-holding device to receive the identification mark and corresponding acquisition time collected by the first and second acquisition units. The system calculates and compares the first acquisition of the dispensing time with the second acquisition of the time before the pressure-holding, obtaining a time value. This time value is then used to determine whether the pressure-holding exceeds a preset threshold. This preset threshold is set based on the adhesive curing time and is obtained through numerous DOE data verifications. Pressure-holding is performed within the time frame that does not exceed the preset threshold, ensuring the thrust stability after the first and second workpieces are bonded, thus improving production stability and quality requirements. This invention automatically traces the dispensing time of each bonded component (first and second workpieces), and uses the identification mark to match whether the two acquired workpieces are the same workpiece, ensuring the accuracy of time tracing and preventing workpiece confusion. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1This is a block diagram of one embodiment of the dispensing and pressure holding system with time traceability function of the present invention.

[0017] Figure 2 This is an exploded view of the first and second workpieces.

[0018] Figure 3 This is a cross-sectional view of the first and second workpieces after they have been bonded together.

[0019] Figure 4 This is an assembly diagram of the first and second workpieces assembled on the dispensing and pressure-holding fixture.

[0020] Figure 5 This is an assembly diagram of the first workpiece assembled onto the dispensing and pressure-holding fixture.

[0021] Figure 6 This is a schematic diagram of the dispensing and pressure-holding fixture.

[0022] Figure 7 This is a partial schematic diagram of the first mounting slot and the second top material unit.

[0023] Figure 8 This is a cross-sectional schematic diagram of the first and second top-loading units.

[0024] Figure 9 This is a schematic diagram of the pressure holding device with time traceability function of the present invention.

[0025] Figure 10 This is an assembly diagram of the positioning module and the pressing module.

[0026] The meanings of the labels in the attached diagram are as follows:

[0027] First data acquisition unit 101; Second data acquisition unit 201; Control system 202; Frame 210; Rollers 211; Telescopic support legs 212; Control box 213; Pressure holding operation box 214; Operation window 215; Safety light curtain 216; Dual control button 217; Temperature control unit 218; Warning unit 219; Workbench 221; Box 222; Second data acquisition window 223; First buffer sheet 224; Second buffer unit 225; Positioning module 230; Sliding base plate 231; heat insulation plate 232; positioning plate 233; third positioning block 2341; fourth positioning block 2342; positioning column 2343; pressing module 240; portal frame 241; pressing drive mechanism 242; first guide assembly 243; connecting plate 244; upper mold pad 245; mounting plate 246; pressure plate 247; second guide rod 248; third elastic element 249; linear drive mechanism 250; first guide rail 251; second guide rail 252;

[0028] Dispensing and pressure holding fixture 300; First acquisition window 301; Fixture table 310; Workpiece positioning table 320; First positioning stage 32a; Second positioning stage 32b; Third positioning stage 32c; Receiving groove 321; First positioning block 322; Second positioning block 323; Grip space 324; First groove 324a; Second groove 324b; Height positioning block 325; End guide positioning unit 327; First guide positioning block 3271; Second guide positioning block 3272; End positioning block 327 3; Mid-section guide positioning unit 328; Third guide positioning block 3281; Fourth guide positioning block 3282; First ejector unit 329a; Second ejector unit 329b; First mounting groove 3291; First lower groove 3291a; First inner groove 3291b; Second mounting groove 3292; Second lower groove 3292a; Second inner groove 3292b; First elastic element 3293; First ejector 3294; ​​Second elastic element 3295; Second ejector 3296; Grip handle 330;

[0029] First workpiece 410; Identification mark 411; Plane 412; Arc surface 413; First metal block 41a; Second metal block 41b; Third metal block 41c; Second workpiece 420; Arc-shaped top wall 421; First side wall 422; Second side wall 423; U-shaped inner cavity 424; End wall 425; Adhesive layer 430. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] Please see Figure 1 , Figure 1This is a block diagram of one embodiment of the pressure holding system with time traceability function of the present invention. The dispensing and pressure holding system with time traceability function of the present invention includes a dispensing device, a pressure holding device, a first acquisition unit 101 disposed on the dispensing device, a second acquisition unit 201 disposed on the pressure holding device, a control system 202 electrically connected to both the first acquisition unit 101 and the second acquisition unit 201, and a dispensing and pressure holding fixture 300 that shuttles back and forth between the dispensing device and the pressure holding device. The dispensing device is used to apply adhesive to the bonding surface of a first workpiece 410 on the dispensing and pressure holding fixture 300 to form an adhesive layer 430. The dispensing device can be any existing dispensing device structure; its structure will not be described in detail here.

[0034] After the first workpiece 410 is placed on the dispensing and pressure-holding fixture 300, it is sent to the dispensing device for positioning (to facilitate quick disassembly of the dispensing and pressure-holding fixture 300, positioning blocks, positioning pins, etc., are usually used to restrict the movement of the dispensing and pressure-holding fixture 300 on the dispensing device or pressure-holding device). The dispensing device applies glue to the bonding surface of the first workpiece 410, which is usually the upper surface of the first workpiece 410. After the dispensing device has finished applying the glue, the second workpiece 420 is placed on the bonding surface of the first workpiece 410, and the dispensing and pressure-holding fixture 300 is placed on the pressure-holding device for positioning. The pressure-holding device holds and presses the first workpiece 410 and the second workpiece 420 together, so that the first workpiece 410 and the second workpiece 420 are firmly bonded together. An identification mark 411 is pre-installed on the non-adhesive side of the first workpiece 410. To facilitate the acquisition by the first acquisition unit 101 and the second acquisition unit 201 and for reasonable installation layout, the identification mark 411 is pre-installed on the bottom surface (the side away from the adhesive surface) of the first workpiece 410 that contacts the upper surface of the dispensing and pressure holding fixture 300. The identification mark 411 of the first workpiece 410 is a unique identification mark 411 that can distinguish the current first workpiece 410 from other first workpieces 410. The identification mark 411 can be displayed on the first workpiece 410 in the form of a QR code or other display methods. The identification mark 411 can be sorted one by one by serial number so that after the first acquisition unit 101 and the second acquisition unit 201 acquire data, the unique identification mark 411 can be used to identify whether the two acquired workpieces are the same workpiece, ensuring the accuracy of dispensing time traceability. A first acquisition window 301 is formed on the dispensing and pressure holding fixture 300 at the position corresponding to the identification mark 411 of the first workpiece 410. The first acquisition window 301 vertically penetrates the dispensing and pressure holding fixture 300 so that the first acquisition unit 101 and the second acquisition unit 201 can acquire the identification mark 411 of the first workpiece 410 through the first acquisition window 301.

[0035] The first acquisition unit 101 can be set on the dispensing worktable of the dispensing device as needed. The first acquisition unit 101 acquires the identification mark 411 at the moment before glue application or at the first moment of glue application. For example, the first acquisition unit 101 can be set at the position where the dispensing pressure fixture 300 is positioned. When the dispensing pressure fixture 300 is positioned on it, the identification mark 411 of the first workpiece 410 can be acquired at the moment before glue application. Alternatively, the moment when the glue application drive mechanism of the dispensing device is activated can be considered the first moment of glue application, allowing the first acquisition unit 101 to be linked with the glue application drive mechanism of the dispensing device to acquire the identification mark 411 of the first workpiece 410 immediately. In this embodiment, the first acquisition unit 101 is a barcode scanner capable of acquiring the QR code. The barcode scanner is set on the worktable of the dispensing device at the position corresponding to the position where the dispensing pressure fixture 300 is positioned. The scanning end of the barcode scanner scans the QR code through the first acquisition window 301 to obtain the identification mark 411 of the first workpiece 410 and the first acquisition time. After the barcode scanner collects the identity identifier 411, it sends the identity identifier 411 and the first collection time to the control system 202, and the control system 202 stores the identity identifier 411 and the first collection time.

[0036] The second acquisition unit 201 is disposed on the pressure holding device and is used to acquire the identification mark 411 on the first workpiece 410 through the first acquisition window 301 before pressure holding the first workpiece 410 and the second workpiece 420, and send the acquired identification mark 411 and its second acquisition time to the control system 202. The second acquisition unit 201 is a barcode scanner with the same or similar structure or function as the first acquisition unit 101, and the barcode scanner is disposed on the worktable of the pressure holding device at the position where the dispensing and pressure holding fixture 300 is positioned.

[0037] The control system 202 is installed on the pressure-holding device and can be part of the control module of the pressure-holding device. The control system 202 is used to compare the identity identifier 411 and its second acquisition time collected by the second acquisition unit 201 with the identity identifier 411 and its first acquisition time collected by the first acquisition unit 101. If the identity identifier 411 is the same and the absolute value of the difference between the first acquisition time and the second acquisition time does not exceed a preset threshold, the pressure-holding device is allowed to operate normally. The control system 202 is also used to control the pressure-holding device to stop working when the identity identifier 411 is different or the absolute value of the difference between the first acquisition time and the second acquisition time exceeds the preset threshold. Allowing the pressure-holding device to operate normally means not interfering with the normal start-up, normal pressure holding, etc., of the pressure-holding device. Controlling the pressure-holding device to stop working can be pausing, stopping, or powering off the pressure device, so that the pressure-holding device cannot hold pressure on the first workpiece 410 and the second workpiece 420 exceeding the preset threshold.

[0038] This invention relates to a dispensing and pressure-holding system with time traceability. A traceable QR code is laser-engraved on a first workpiece. Barcode scanners are installed on both the dispensing and pressure-holding devices to scan the dispensing time and the time before pressure holding is required. The system compares the identity information by scanning two codes and the dispensing time by comparing the two scan times to see if they exceed a preset threshold. For the first and second workpieces that do not exceed the preset threshold, pressure holding is applied. This method accurately and automatically traces and detects the glue dispensing time of the same workpiece, clearly determining the time when the workpiece is sent to the pressure-holding device. Workpieces meeting the time requirements are sent to the pressure-holding device for pressure holding, ensuring the stability of the thrust force after the first and second workpieces are pressed together, improving product production stability and quality requirements, and enhancing the effective control of product production.

[0039] Please see Figure 2 and Figure 3 The present invention provides a dispensing and pressure-holding system and pressure-holding device with time traceability function, specifically as follows: Figure 2 and Figure 3 The first workpiece 410 and the second workpiece 420 shown are illustrated in detail as examples. Figure 2The first workpiece 410 shown is a strip or block-shaped metal part with a semi-circular cross-section. It has a flat surface 412 and an arc surface 413 (top surface). When the first workpiece 410 is placed on the dispensing and pressure-holding fixture 300, the flat surface 412 serves as the bottom surface, directly fixing or positioning it on the dispensing and pressure-holding fixture 300. The arc surface 413 serves as the top surface for bonding with the second workpiece 420; therefore, the arc surface 413 can also be called the bonding surface. When the first workpiece 410 is placed on the dispensing and pressure-holding fixture 300 and fed into the dispensing device for dispensing, the dispensing device applies glue to the arc surface 413 so that the second workpiece 420 can be bonded to the arc surface 413. In this embodiment, the first workpiece 410 is composed of three independent, separate metal blocks: a first metal block 41a, a second metal block 41b, and a third metal block 41c. The second workpiece 420 is an inverted U-shaped metal tubular structure. It has an arc-shaped top wall 421, a first side wall 422 formed on one side of the arc-shaped top wall 421, and a second side wall 423 formed on the other side of the arc-shaped top wall 421. The first side wall 422, the second side wall 423, and the arc-shaped top wall 421 together form a U-shaped inner cavity 424. When the second workpiece 420 is placed over the arc surface 413 of the first workpiece 410, the first workpiece 410 is entirely placed within the space enclosed by the arc-shaped top wall 421 of the second workpiece 420. The bottom edges of the first side wall 422 and the second side wall 423 of the second workpiece 420 are lower than the plane 412 (bottom surface) of the first workpiece 410. The second workpiece 420 has an end wall 425 at each end. The end wall 425 is formed by extending downward and outward from the arc-shaped top wall 421. The two sides of the end wall 425 are respectively connected to the corresponding end faces of the first side wall 422 and the second side wall 423.

[0040] Please see Figures 4 to 8 The dispensing and pressure-holding fixture 300 includes a fixture platform 310, a workpiece positioning stage 320 formed on the fixture platform 310, and a gripping handle 330 disposed on one side of the fixture platform 310. The first acquisition window 301 penetrates the fixture platform 310 and the workpiece positioning stage 320 along the height direction of the dispensing and pressure-holding fixture 300. The fixture platform 310 has a plurality of heating pipes (not shown) for heating gas to pass through, and the heating gas heats the workpiece on the fixture platform 310 from bottom to top through the heating pipes.

[0041] The workpiece positioning stage 320 is formed on the table surface of the fixture table 310. The shape of the table surface of the workpiece positioning stage 320 is adapted to the shape of the plane 412 of the first workpiece 410. When the first workpiece 410 is placed on the workpiece positioning stage 320, the overall height of the first workpiece 410 and the workpiece positioning stage 320 is adapted to the height of the second workpiece 420, and the overall shape of the first workpiece 410 and the workpiece positioning stage 320 is adapted to the shape of the U-shaped inner cavity 424 of the second workpiece 420. When the second workpiece 420 is placed on the bonding surface of the first workpiece 410, the first side wall 422, the second side wall 423, and the two end walls 425 of the second workpiece 420 are respectively attached to the corresponding outer walls of the workpiece positioning stage 320. The workpiece positioning table 320 has a plurality of accommodating grooves 321 spaced apart along its length. A magnetic suction element (not shown) for adsorbing the first workpiece 410 is fixed in the accommodating groove 321. The bottom surface of the magnetic suction element is not higher than the table surface of the workpiece positioning table 320.

[0042] The workpiece positioning stage 320 is divided into three independent positioning stages by a first positioning groove and a second positioning groove. The first metal block 41a, the second metal block 41b, and the third metal block 41c are respectively placed on the first to third positioning stages along the length of the workpiece positioning stage 320. The length of the first positioning stage 32a is adapted to the length of the first metal block 41a and is used to adsorb and position the first metal block 41a. The length of the second positioning stage 32b is adapted to the length of the second metal block 41b and is used to adsorb and position the second metal block 41b. The first positioning groove is located between the first positioning stage 32a and the second positioning stage 32b (corresponding to the position between the first metal block 41a and the second metal block 41b). The first positioning groove is provided with a first positioning block 322 whose height is adapted to the height of the first metal block 41a and the second metal block 41b. The first positioning block 322 is erected in the first positioning groove and protrudes from the table surface of the workpiece positioning stage 320. The second positioning groove is located between the second positioning platform 32b and the third positioning platform 32c (corresponding to the position between the second metal block 41b and the third metal block 41c). A second positioning block 323, with a height adapted to the heights of the second metal block 41b and the third metal block 41c, is provided within the second positioning groove. The second positioning block 323 stands upright in the second positioning groove and protrudes from the surface of the workpiece positioning platform 320. When installing the first metal block 41a, the second metal block 41b, and the third metal block 41c, their positions are determined by aligning the corresponding end faces of the first metal block 41a, the second metal block 41b, and the third metal block 41c with the corresponding positioning faces of the corresponding positioning blocks, making assembly convenient and quick.

[0043] A first groove 324a is provided on one lateral side of the workpiece positioning platform 320 on the fixture table 310. A second groove 324b, corresponding to the first groove 324a, is provided on the other lateral side of the workpiece positioning platform 320 on the fixture table 310. The first groove 324a communicates with one side wall of the workpiece positioning platform 320 in the direction facing the workpiece positioning platform 320; the second groove 324b communicates with the other side wall of the workpiece positioning platform 320 in the direction facing the other side of the workpiece positioning platform 320. The first groove 324a and the second groove 324b form a gripping space 324 for convenient gripping of the second workpiece 420 when picking up and putting down the workpiece. This design is because the height of the second workpiece 420 is adapted to the height of the workpiece positioning platform 320, that is, the bottom edge of the second workpiece 420 is almost in contact with the table surface of the fixture table 310. The two grooves on both lateral sides of the second workpiece 420 facilitate the lifting of the bottom edge of the second workpiece 420 from bottom to top, making it easy to pick up the second workpiece 420. There can be multiple sets of such gripping spaces 324, which are spaced apart along the length of the workpiece positioning stage 320.

[0044] The fixture platform 310 has at least two positioning holes (not shown) for quickly positioning the dispensing and pressure-holding fixture 300 onto the pressure-holding device. These two positioning holes extend through the bottom surface of the fixture platform 310. Several height positioning blocks 325 are provided on the surface of the fixture platform 310 at both sides of the workpiece positioning table 320 to limit the pressing height of the pressing module of the pressure-holding device. The fixture platform 310 also has a guide positioning structure for guiding and positioning the second workpiece 420 during installation. This guide positioning structure includes two end guide positioning units 327 located at both ends of the workpiece positioning table 320 and a middle section guide positioning unit 328 located in the middle section of the workpiece positioning table 320. The end guide positioning unit 327 includes an end positioning block 3273 disposed on the fixture table 310 and located on the outer side of the end of the workpiece positioning table 320, and a first guide positioning block 3271 and a second guide positioning block 3272 located on both sides of the workpiece positioning table 320 and near the end. The middle guide positioning unit 328 includes a third guide positioning block 3281 and a fourth guide positioning block 3282 disposed on the fixture table 310 and located on both sides of the workpiece positioning table 320 respectively. The spatial dimensions and shape between the end positioning block 3273 and the end wall of the workpiece positioning table 320 are adapted to the end wall 425 of the second workpiece 420, and the spatial dimensions and shapes between the first guide positioning block 3271, the second guide positioning block 3272, the third guide positioning block 3281, and the fourth guide positioning block 3282 and the workpiece positioning table 320 are adapted to the corresponding side walls of the second workpiece 420.

[0045] To facilitate material removal after the pressure holding period, a ejector mechanism is provided on the workpiece positioning table 320. This ejector mechanism allows the workpiece to be ejected a certain distance upwards for easy removal after the pressure holding device's lowering module returns to its upward position. The ejector mechanism includes a first ejector unit 329a located on one side of the workpiece positioning table 320's transverse direction and a second ejector unit 239b located on the other side of the workpiece positioning table 320's transverse direction. Multiple ejector mechanisms can be provided, spaced apart along the length of the workpiece positioning table 320.

[0046] The fixture table 310 is provided with a first mounting groove 3291 for mounting the first ejector unit 329a and a second mounting groove 3292 for mounting the second ejector unit 239b. The first mounting groove 3291 includes a first lower groove 3291a recessed downward from the table surface of the fixture table 310 and a first inner groove 3291b formed on one lateral side of the workpiece positioning table 320. The first lower groove 3291a is located on one lateral side of the workpiece positioning table 320. The first inner groove 3291b is recessed from one lateral side of the workpiece positioning table 320 to the opposite side, and the first inner groove 3291b extends through the workpiece positioning table 320 from the height direction. The first inner groove 3291b continues to be recessed downward so that its bottom surface is on the same plane as the bottom surface of the first lower groove 3291a. The first lower groove 3291a has a first communication opening that communicates with the first inner groove 3291b. On the horizontal projection plane, the first lower groove 3291a and the first inner groove 3291b are circular. The first ejector unit 329a includes a first elastic member 3293 and a first ejector member 3294 arranged sequentially from bottom to top in the first mounting groove 3291. The cross-sectional shape of the first ejector member 3294 is adapted to the cross-sectional shape of the first mounting groove 3291. A part of the first ejector member 3294 is accommodated in the first lower groove 3291a, and another part is accommodated in the first inner groove 3291b, so that it can move in the first inner groove 3291b along the height direction of the workpiece positioning stage 320 under the action of the first elastic member 3293, and then push the bottom edge of the first side wall 422 of the second workpiece 420 upward.

[0047] The second mounting groove 3292 includes a second lower groove 3292a recessed downward from the surface of the fixture table 310 and a second inner groove 3292b formed on the other lateral side of the workpiece positioning table 320. The second lower groove 3292a is located on the other lateral side of the workpiece positioning table 320, and the second inner groove 3292b is recessed from the other lateral side of the workpiece positioning table 320 towards the opposite lateral side. The second inner groove 3292b extends through the workpiece positioning table 320 in the height direction and continues to recess downward so that its bottom surface is on the same platform as the bottom surface of the first lower groove 3291a. The second lower groove 3292a has a second communication opening communicating with the second inner groove 3292b. On the horizontal projection plane, the second lower groove 3292a and the second inner groove 3292b are circular. The second ejector unit 239b includes a second elastic member 3295 and a second ejector 3296 arranged sequentially from bottom to top in the second mounting groove 3292. The cross-sectional shape of the second ejector 3296 is adapted to the cross-sectional shape of the second mounting groove 3292. A portion of the second ejector 3296 is accommodated in the second lower groove 3292a, and another portion is accommodated in the second inner groove 3292b, so that it can move in the second inner groove 3292b along the height direction of the workpiece positioning stage 320 under the action of the second elastic member 3295, and then push the bottom edge of the second side wall 423 of the second workpiece 420 upward so that the bonded parts (first workpiece 410 and second workpiece 420) are ejected upward by a certain distance.

[0048] Please see Figure 9 and Figure 10 The pressure-holding device includes a frame 210, rollers 211 at the bottom of the frame 210, retractable support legs 212, a control box 213 formed at the lower part of the frame 210, and a pressure-holding operation box 214 formed at the upper part of the frame 210. The retractable support legs 212 can be controlled to extend and retract using a hydraulic drive mechanism. When the pressure-holding device moves to the target position, the hydraulic drive mechanism controls the retractable support legs 212 to descend and support the device at the target position. When the pressure-holding device needs to be moved, the hydraulic drive mechanism controls the retractable support legs 212 to rise, and the rollers 211 roll in contact with the ground to facilitate the movement of the pressure-holding device. The control box 213 is used to install electrical control components such as the aforementioned control system 202. An operation window 215 is formed on the front side of the pressure holding operation box 214. Safety light curtains 216 electrically connected to the control system 202 are provided on both sides of the operation window 215. A dual control button 217 for operating the pressure holding device to start and stop is provided on the outside of the operation window 215.

[0049] The pressure-holding operation chamber 214 is equipped with a temperature control unit 218 for displaying and controlling the pressure-holding temperature and an alarm unit 219 for issuing warnings. Both the temperature control unit 218 and the alarm unit 219 are electrically connected to the control system 202. The alarm unit 219 may be, for example, a three-color light, an alarm sound output unit, and / or a display unit. When the control system 202 processes and finds that the identification identifiers 411 are the same and the absolute value of the difference between the first acquisition time and the second acquisition time does not exceed a preset threshold, the pressure-holding device is made to work normally, and the alarm unit 219 is controlled to emit a green passage light. When the control system 202 processes and finds that the identification identifiers 411 are different or the absolute value of the difference between the first acquisition time and the second acquisition time exceeds the preset threshold, the pressure-holding device is controlled to stop working, and the alarm unit 219 is controlled to emit a yellow light or a red light.

[0050] The pressure holding operation box 214 is equipped with a pressure holding workbench (hereinafter referred to as workbench 221), and a box 222 is arranged below the workbench 221. The second acquisition unit is arranged inside the box 222. The workbench 221 is provided with a positioning module 230 for positioning the dispensing and pressure-holding fixture 300. A pressing module 240 is mounted on the workbench 221 directly above the dispensing and pressure-holding fixture 300. A second acquisition window 223 is formed on the workbench 221 at the position corresponding to the first acquisition window 301 of the dispensing and pressure-holding fixture 300. The second acquisition unit 201 and the dispensing and pressure-holding fixture 300 are both set on the workbench 221 as part of the pressure-holding device. The dispensing and pressure-holding device is positioned on the positioning module 230 to cooperate with the pressing module 240 to hold and maintain pressure on the first workpiece 410 and the second workpiece 420. The second acquisition unit 201 is used to sequentially acquire the identification mark 411 on the first workpiece 410 through the second acquisition window 223 and the first acquisition window 301. To facilitate the installation and disassembly of the dispensing and pressure-holding device, provide a larger loading and unloading space, and provide a position for the second acquisition unit 201 to collect the identification mark 411, so that the second acquisition unit 201 can collect the identification mark 411 of the first workpiece 410 in an orderly manner, the pressure-holding device also includes a first track and a linear drive mechanism 250 on the worktable 221. The positioning module 230 is slidably disposed on the first track and connected to the output shaft of the linear drive mechanism 250. A part of the first track is located directly below the pressing module 240 to form a pressure-holding working position. The other part of the first track outside the pressure-holding working position forms the loading position (initial position) of the dispensing and pressure-holding fixture 300. The position of the second acquisition window 223 corresponds to the position of the first acquisition window 301 on the dispensing and pressure-holding fixture 300 at the loading position of the dispensing and pressure-holding fixture 300. The linear drive mechanism 250 is used to drive the positioning module 230 to reciprocate between the material loading position and the pressure holding position of the dispensing and pressure holding fixture 300. When the linear drive mechanism 250 drives the positioning module 230 to the material loading position of the dispensing and pressure holding fixture 300, the dispensing and pressure holding fixture 300 is positioned on the positioning module 230. When the linear drive mechanism 250 drives the dispensing and pressure holding fixture 300 to the pressure holding position, the pressing module 240 moves downward to press against the dispensing and pressure holding fixture 300, thereby cooperating with the dispensing and pressure holding fixture 300 to perform pressure holding.

[0051] The first track includes a first guide rail 251 and a second guide rail 252 spaced apart along the length or width direction of the worktable 221. The inner surfaces (opposite sides) of the first guide rail 251 and the second guide rail 252 are formed with mutually symmetrical grooves. The linear drive mechanism 250 can be a linear drive mechanism such as an electric actuator, a cylinder, or a linear module. The linear drive mechanism 250 is located on one side of the worktable 221 and its orientation is consistent with that of the first guide rail 251 and the second guide rail 252. The workbench 221 located between the first guide rail 251 and the second guide rail 252 forms the moving area 253 of the positioning module 230. The position of the moving area 253 near the first end of the first rail forms the pressure holding position together with the first end of the first rail. The position of the moving area 253 near the second end of the first rail forms the loading position of the dispensing pressure holding fixture 300 together with the second end of the second rail. The second acquisition window 223 is formed on the workbench 221 in the loading position area of ​​the dispensing pressure holding fixture 300. The second acquisition window 223 is specifically located in the loading position area of ​​the dispensing pressure holding fixture 300 at the position corresponding to the identification mark 411 of the first workpiece 410 on the positioning module 230. A first buffer unit 224 is formed on the worktable 221 near the pressure holding position, and a second buffer unit 225 is formed near the material loading position of the dispensing and pressure holding fixture 300. The first buffer unit 224 and the second buffer unit 225 are respectively near the two opposite edges of the worktable 221.

[0052] The positioning module 230 includes a sliding base plate 231, a heat insulation plate 232 disposed on the sliding base plate 231, and a positioning plate 233 disposed on the heat insulation plate 232. The sliding base plate 231 has sliders on both sides that slide in the grooves of the first guide rail 251 and the second guide rail 252. The positioning plate 233 is provided with a positioning structure for positioning the dispensing and pressure holding fixture 300 to prevent the dispensing and pressure holding fixture 300 from moving in the horizontal direction, and a heating pipe (not shown) for heating the workpiece on the dispensing and pressure holding fixture 300. The positioning structure includes a third positioning block 2341 and a fourth positioning block 2342 disposed on the positioning plate 233 for positioning the two corners of the dispensing and pressure-holding fixture 300. Both the third positioning block 2341 and the fourth positioning block 2342 are L-shaped positioning blocks. The positioning structure also includes two positioning posts 2343 erected on the positioning plate 233 at positions corresponding to the two positioning holes of the fixture platform 310. When positioning the dispensing and pressure-holding fixture 300, these posts ensure that the two corners of the dispensing and pressure-holding fixture 300 are positioned... The two L-shaped positioning blocks are aligned at an angle and moved downwards along the height direction of the L-shaped positioning blocks onto the positioning plate 233. The dispensing and pressure-holding fixture 300 quickly locates the positions of the two positioning posts 2343 through the two L-shaped positioning blocks. During the process of the dispensing and pressure-holding fixture 300 moving downwards onto the positioning plate 233, the two positioning holes pass through the two positioning posts 2343. This allows the dispensing and pressure-holding fixture 300 to be quickly positioned on the positioning module 230, preventing the dispensing and pressure-holding fixture 300 from moving in the horizontal direction.

[0053] The pressing module 240 is mounted on the workbench 221 via a portal frame 241 and is located directly above the pressure holding position, i.e., directly above the dispensing and pressure holding fixture 300 at the pressure holding position. The pressing module 240 includes a pressing drive mechanism 242 mounted on the portal frame 241, a first guide assembly 243 movably passing through the portal frame, and an upper module connected to the lower ends of the pressing drive mechanism 242 and the first guide assembly 243. The pressing drive mechanism 242 can be a motor, cylinder, hydraulic cylinder, etc., and its output axis passes downward through the portal frame 241 and connects to the upper end of the upper module. The first guide assembly 243 includes first guide rods respectively disposed on both sides of the pressing drive mechanism 242. The two first guide rods movably pass through the portal frame 241 and their lower ends are connected to the upper end of the upper module. The upper module includes a connecting plate 244, an upper mold pad 245, a mounting plate 246, and a pressure plate 247 arranged sequentially from top to bottom. The lower surface of the connecting plate 244 is also provided with a height-limiting post to restrict the upper module from moving further downward to prevent damage to the workpiece. The connecting plate 244 is connected to the output shaft of the downward pressing drive mechanism 242 and the lower end of the first guide rod. A plurality of second guide rods 248 and a third elastic element 249 are provided between the mounting plate 246 and the pressure plate 247. An elastic protective plate (such as a urethane rubber plate made of urethane rubber) is attached to the lower surface of the pressure plate 247.

[0054] The working principle of the dispensing and pressure holding system with time traceability function of this invention is as follows:

[0055] 1. Fabrication of a new dispensing and pressure holding fixture 300: A first vertically penetrating acquisition window 301 is opened on the new dispensing and pressure holding fixture 300 at the position of plane 412 corresponding to the first workpiece 410;

[0056] 2. Pre-set identification mark 411: Laser engrave a traceable QR code on the plane 412 of the first workpiece 410 at the position corresponding to the first acquisition window 301;

[0057] 3. Assemble the first workpiece 410: Assemble the first metal block 41a, the second metal block 41b and the third metal block 41c on the first positioning stage 32a, the second positioning stage 32b and the third positioning stage 32c respectively; During the assembly process, make the positioning surfaces of the corresponding metal blocks and the corresponding positioning blocks to find the correct positions, and quickly attract the corresponding metal blocks through the magnetic suction parts embedded in the workpiece positioning stage 320.

[0058] Fourth, the dispensing and pressure-holding fixture 300 carrying the first workpiece 410 is sent to the dispensing device for positioning. The barcode scanner (first acquisition unit 101) here acquires the QR code of the first workpiece 410 through the first acquisition window 301 and sends the identity identifier 411 corresponding to the QR code and the current acquisition time to the control system 202 at the pressure-holding fixture.

[0059] 5. The dispensing device applies glue to the bonding surface of the first workpiece 410. This step can refer to the existing dispensing process and will not be described in detail here.

[0060] 6. Take out the dispensing and pressure holding fixture 300 and send it to the positioning module 230 at the material position of the dispensing and pressure holding fixture 300 of the pressure holding device. The barcode scanner (second acquisition unit 201) here collects the QR code of the first workpiece 410 through the second acquisition window 223 and the first acquisition window 301, and then sends the identity identifier 411 corresponding to the QR code and the current acquisition time to the control system 202.

[0061] VII. The control system 202 processes the identity identifiers 411 and acquisition times collected twice. If the identity identifiers 411 are the same and the absolute value of the difference between the first acquisition time and the second acquisition time does not exceed a preset threshold, the pressure holding device is made to work normally. Pressing the dual control button causes the control system 202 to cause the linear drive mechanism 250 to bring the dispensing pressure holding fixture 300 to the pressure holding position according to the instruction issued by the dual control button, and causes the lower drive mechanism 242 to drive the upper module to move downward to press against the dispensing pressure holding fixture 300 for heating and pressure holding. If the identity identifiers 411 are not the same or the absolute value of the difference between the first acquisition time and the second acquisition time exceeds the preset threshold, the pressure holding device is controlled to stop working. In this state, the control system 202 does not respond to the instruction of the dual control button.

[0062] 8. After the pressure holding is completed, the lowering module 240 returns to its original position, and the ejector mechanism on the dispensing and pressure holding fixture 300 pushes the adhesive part upward. The dispensing and pressure holding fixture 300 and the adhesive part are then removed.

[0063] This invention relates to a dispensing and pressure-holding system and a pressure-holding device with time reversal function. It improves the dispensing and pressure-holding fixture to form a first acquisition window, forms an identification mark on the first workpiece corresponding to the first acquisition window position, sets a first acquisition unit at the corresponding position of the dispensing device, sets a second acquisition unit and a second acquisition window at the corresponding position of the pressure-holding device, and sets a control system at the pressure-holding device to receive the identification mark and corresponding acquisition time collected by the first and second acquisition units. The system calculates and compares the first acquisition time of dispensing time with the second acquisition time of pressure-holding time to obtain a time value. It then determines whether the pressure-holding exceeds a preset threshold, which is set based on the adhesive curing time and obtained through numerous DOE data verifications. Pressure-holding is performed within the time frame that does not exceed the preset threshold, ensuring the thrust stability after the first and second workpieces are bonded, thus improving production stability and quality requirements.

[0064] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention should be determined by the appended claims.

Claims

1. A dispensing and pressure-holding system with time traceability function, comprising a dispensing and pressure-holding fixture, a dispensing device for applying adhesive to the bonding surface of a first workpiece on the dispensing and pressure-holding fixture, and a pressure-holding device for pressing a second workpiece onto the first workpiece on the dispensing and pressure-holding fixture, characterized in that: An identification mark is formed on one side of the first workpiece; a first acquisition window is formed on the dispensing and pressure holding fixture at a position corresponding to the identification mark; The dispensing and pressure holding system with time traceability function also includes: Control system; The first acquisition unit is configured to acquire an identification mark on the first workpiece through the first acquisition window before or during the application of the adhesive to the first workpiece, and send the acquired identification mark and its first acquisition time to the control system; and The second acquisition unit is used to acquire the identification mark on the first workpiece through the first acquisition window before the first workpiece and the second workpiece are pressure-held, and to send the acquired identification mark and its second acquisition time to the control system. The control system is used to compare the identity identifier and its second acquisition time collected by the second acquisition unit with the identity identifier and its first acquisition time collected by the first acquisition unit. If the identity identifiers are the same and the absolute value of the difference between the first acquisition time and the second acquisition time does not exceed a preset threshold, the pressure holding device is made to work normally, and the workpieces collected in the two acquisitions are matched by the identity identifier to see if they are the same workpiece. The dispensing and pressure-holding fixture includes a fixture platform and a workpiece positioning platform formed on the fixture platform; the first workpiece has a semi-circular cross-section, with a flat surface and an arc surface, the arc surface serving as the bonding surface to adhere to the second workpiece, the flat surface being placed on the workpiece positioning platform, and the identification mark being formed on the flat surface via a QR code; the second workpiece has an arc-shaped cross-section, with an arc-shaped top wall, a first side wall formed on one side of the arc-shaped top wall, and a second side wall formed on the other side of the arc-shaped top wall, the first side wall, the second side wall, and the arc-shaped top wall forming a U-shaped inner cavity, the bottom edges of the first side wall and the second side wall being lower than the flat surface; when the first workpiece is placed on the workpiece positioning platform, the shapes of the first workpiece and the workpiece positioning platform are adapted to the U-shaped inner cavity shape of the second workpiece; A first recessed groove is formed on one side of the workpiece positioning stage, extending inwards towards the opposite side. The first recessed groove extends through the workpiece positioning stage from its height direction. A second recessed groove is formed on the other side of the workpiece positioning stage, extending inwards towards the opposite side. The second recessed groove extends through the workpiece positioning stage from its height direction. A first lower groove is formed on the fixture platform at a position corresponding to the first recessed groove. The first lower groove communicates with the first recessed groove to form a first mounting groove. A first elastic member and a first top member are sequentially arranged from bottom to top in the first mounting groove. The first top member is partially accommodated in the first recessed groove so that it can move along the height direction of the workpiece positioning stage within the first recessed groove under the action of the first elastic member. A second lower groove is formed on the fixture platform at a position corresponding to the second recessed groove. The second lower groove communicates with the second recessed groove to form a second mounting groove. A second elastic member and a second top member are sequentially arranged from bottom to top in the second mounting groove. The second top member is partially accommodated in the second recessed groove so that it can move along the height direction of the workpiece positioning stage within the second recessed groove under the action of the second elastic member.

2. The dispensing and pressure holding system with time traceability function as described in claim 1, characterized in that: The control system is also used to control the pressure holding device to stop working when the identity identifiers are different or when the absolute value of the difference between the first acquisition time and the second acquisition time exceeds a preset threshold.

3. The dispensing and pressure holding system with time traceability function as described in claim 1, characterized in that: The first workpiece is a metal workpiece; the shape of the workpiece positioning table is adapted to the shape of the first workpiece, and the workpiece positioning table has a plurality of accommodating grooves spaced apart along its length direction. A magnetic suction element for adsorbing the first workpiece is fixed in the accommodating groove, and the bottom surface of the magnetic suction element is not higher than the table surface of the workpiece positioning table.

4. The dispensing and pressure holding system with time traceability function as described in claim 1, characterized in that: The first workpiece includes a split first metal block, a second metal block, and a third metal block, which are placed on the surface of the workpiece positioning table along the length of the workpiece positioning table. A first positioning groove is formed on the workpiece positioning table at a position between the first metal block and the second metal block, and a first positioning block with a height adapted to the height of the first metal block and the second metal block is provided in the first positioning groove. A second positioning groove is formed on the workpiece positioning table at a position between the second metal block and the third metal block, and a second positioning block with a height adapted to the height of the second metal block and the third metal block is provided in the second positioning groove.

5. The dispensing and pressure holding system with time traceability function as described in claim 1, characterized in that: At least one first groove is provided on the jig platform on one lateral side of the workpiece positioning platform, and the first groove is connected to one side wall of the workpiece positioning platform in the direction facing the workpiece positioning platform; at least one second groove is provided on the jig platform on the other lateral side of the workpiece positioning platform, corresponding to the at least one first groove, and the at least one second groove is connected to the other side wall of the workpiece positioning platform in the direction facing the other side of the workpiece positioning platform.

6. The dispensing and pressure holding system with time traceability function as described in any one of claims 1 to 5, characterized in that: The pressure holding device includes a worktable, a positioning module disposed on the worktable for positioning the dispensing pressure holding fixture, and a pressing module mounted on the worktable and located directly above the dispensing pressure holding fixture; a second acquisition window is formed on the worktable at a position corresponding to the first acquisition window of the dispensing pressure holding fixture, and the second acquisition unit sequentially acquires the identification mark on the first workpiece through the second acquisition window and the first acquisition window.

7. The dispensing and pressure holding system with time traceability function as described in claim 6, characterized in that: The pressure holding device further includes a first track and a linear drive mechanism disposed on the worktable. The positioning module is slidably disposed on the first track and connected to the output shaft of the linear drive mechanism. A portion of the first track is located directly below the pressing module to form a pressure holding working position, and the other portion of the first track outside the pressure holding working position forms a material loading position for the dispensing pressure holding fixture. The linear drive mechanism is used to drive the positioning module to reciprocate between the material loading position for the dispensing pressure holding fixture and the pressure holding working position. The position of the second acquisition window corresponds to the position of the first acquisition window on the dispensing pressure holding fixture at the material loading position.

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