A double-sided crimping device

Abstract

This invention provides a double-sided crimping device, comprising: a platform unit having a bearing surface for placing the product to be tested, the bearing surface being divided into multiple independent adsorption areas, the multiple adsorption areas being configured in different combinations to adapt to products of different specifications; a crimping unit including two sets of crimping actuators symmetrically arranged on opposite sides of the platform unit, each set of crimping actuators including a driving component in at least one direction, a Z-axis lifting component, and a crimping component, the driving component and the Z-axis lifting component respectively driving the crimping component to move in at least one direction and to rise and fall along the Z-axis direction; the crimping component including multiple pressure heads on the same horizontal plane with adjustable spacing, the crimping surface of the pressure heads being arranged opposite to the crimping surface of the product to be tested. By dividing the platform unit into multiple independent and controllable adsorption areas and arranging multi-dimensional crimping actuators on both sides, compatible fixing of products of different specifications and precise crimping operations at multiple angles and positions are achieved.

Description

Technical Field

[0001] This utility model relates to the field of automatic crimping technology, and in particular to a double-sided crimping device. Background Technology

[0002] In current production practices, customers commonly use manual crimping fixtures for production operations. This traditional method suffers from low efficiency, high labor intensity, and difficulty in controlling human error, resulting in limited production output and unstable crimping success rates. With the gradual introduction of automated production lines, there is an urgent need to replace manual crimping with automated crimping technology to achieve both improved production efficiency and quality. However, existing automated crimping technologies still have shortcomings in product specification adaptability, crimping position accuracy, and automation control, making it difficult to meet the high-efficiency, high-precision crimping requirements of diverse products. Therefore, developing a double-sided crimping device that can flexibly adapt to different specifications of products, achieve precise crimping positioning, and possess automated control functions has become a pressing technical problem to be solved. Utility Model Content

[0003] In order to solve all or part of the problems of the prior art, this utility model provides a double-sided pressing device. By dividing the platform unit into multiple independent and controllable adsorption areas and configuring independently driven multi-dimensional motion pressing actuators on both sides, it realizes the compatible fixing of products of different specifications and precise pressing operations at multiple angles and positions.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A double-sided crimping device, comprising:

[0006] The stage unit has a bearing surface for placing the product to be tested, the bearing surface being divided into multiple independent adsorption areas, the multiple adsorption areas being configured in different combinations to accommodate products of different specifications.

[0007] The crimping unit includes two sets of crimping actuators symmetrically arranged on opposite sides of the platform unit. Each set of crimping actuators includes a driving component in at least one direction, a Z-axis lifting assembly, and a crimping assembly. The driving component and the Z-axis lifting assembly respectively drive the crimping assembly to move in at least one direction and to rise and fall along the Z-axis direction. The crimping assembly includes multiple pressure heads on the same horizontal plane with adjustable spacing. The crimping surface of the pressure head is arranged opposite to the crimping surface of the product to be tested.

[0008] The crimping unit also includes a Y-axis drive mechanism, and each group of crimping actuators is slidably connected to the Y-axis drive mechanism via a separate slider; the drive component includes an X-axis drive assembly and a θ-axis rotation assembly connected in sequence, and the X-axis drive assembly and the θ-axis rotation assembly respectively drive the crimping assembly to move in the X-axis direction and rotate around the θ-axis.

[0009] It also includes a machine base; the Y-axis drive mechanism is mounted on the machine base, the platform unit is disposed above the Y-axis drive mechanism and is fixedly connected to the machine base through a support structure; the two sets of pressing actuators are respectively disposed at both ends of the Y-axis drive mechanism and configured to move synchronously or independently along the Y-axis direction under the drive of the Y-axis drive mechanism to move closer to or further away from the platform unit.

[0010] The layout of the multiple adsorption regions includes: a central adsorption region located at the center of the bearing surface, which, when used alone, is configured to adsorb the smallest size of the test product; and multiple extension regions arranged around the central adsorption region, each of which consists of multiple adsorption regions. The central adsorption region and one or more adsorption regions in the extension regions are combined to adapt to adsorb test products of different size ranges.

[0011] Some or all of the adsorption regions within the extended region are composed of two or more physically separated but interconnected sub-regions, and the sub-regions are arranged according to a preset rule within each extended region; the shape of the sub-regions is one of rectangle, circle or polygon.

[0012] The pressing assembly includes a mounting base, a first mounting plate, a second mounting plate, an adjusting base, and multiple pressing heads connected in sequence. The mounting base is connected to the Z-axis lifting assembly. The adjusting base is provided with a guide rail groove extending in the horizontal direction. The spacing between the pressing heads is adjustable within the guide rail groove, and the pressing surfaces of the pressing heads are on the same horizontal plane.

[0013] The mounting base is connected to the first mounting plate via a rotation adjustment structure. The first mounting plate, the second mounting plate, the adjustment base, and the pressure head rotate synchronously around the mounting base via the rotation adjustment structure, and their rotation axis is parallel to the bearing surface of the platform unit.

[0014] The rotation adjustment structure includes a connecting part and a rotating part. The connecting part is configured to selectively fix or separate the first mounting plate from the mounting base. The rotating part includes a rotating shaft that is vertically fixed to the upper center position of the mounting base, and a bearing assembly that is disposed at the corresponding position of the first mounting plate and rotates with the rotating shaft. The axis of the rotating shaft is parallel to the bearing surface of the platform unit.

[0015] The connecting part includes at least two elongated through holes on both sides of the mounting base, a threaded countersunk hole at the corresponding position of the first mounting plate, and an adjusting bolt that passes through the elongated through holes and engages with the threaded countersunk hole. The adjusting bolt is configured to slide within the elongated through holes to adjust the position of the first mounting plate and to lock the first mounting plate by tightening.

[0016] The mounting base is symmetrically provided with horizontal adjustment structures on both sides. The horizontal adjustment structure includes a support base, an adjusting nut fixed in the support base, and a fine-tuning screw that forms a threaded pair with the adjusting nut. The top surface of the fine-tuning screw abuts against the bottom surface of the first mounting plate. By rotating the fine-tuning screw, the first mounting plate can be rotated around the rotation axis. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a double-sided crimping device according to an embodiment of the present invention.

[0019] Figure 2 This is a top view of a double-sided crimping device according to an embodiment of the present invention.

[0020] Figure 3 This is a side view of a double-sided crimping device according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of a double-sided crimping device without the platform unit, according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the platform unit in a double-sided crimping device according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the crimping component in a double-sided crimping device according to an embodiment of the present invention.

[0024] Figure 7 This is a side view of a crimping assembly in a double-sided crimping device according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the structure of the second mounting plate in a double-sided crimping device according to an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the structure of the adjusting base in a double-sided crimping device according to an embodiment of the present invention.

[0027] Reference numerals: 1. Platform unit; 101. Central adsorption area; 2. Pressing unit; 3. Y-axis drive mechanism; 4. Pressing actuator; 5. Pressing assembly; 501. Mounting base; 502. First mounting plate; 503. Second mounting plate; 504. Adjusting base; 5041. Guide rail groove; 505. Pressing head; 506. Rotation adjustment structure; 5061. Connecting part; 5062. Rotating part; 507. Horizontal adjustment structure. Detailed Implementation

[0028] The technical solutions in specific embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] This utility model embodiment provides a double-sided crimping device, in conjunction with reference to the following reference. Figures 1 to 9 As shown, the device includes a stage unit 1 and a pressing unit 2. The stage unit 1 has a bearing surface for placing the product to be tested. The bearing surface is divided into multiple independently controlled adsorption areas. These adsorption areas can be combined in different ways to adapt to different specifications of the product to be tested, achieving adaptability and positioning for products of different specifications. The pressing unit 2 includes a Y-axis drive mechanism 3 and two sets of pressing actuators 4 symmetrically arranged on opposite sides of the stage unit 1. Each set of pressing actuators 4 is slidably connected to the Y-axis drive mechanism 3 via a separate slider to achieve synchronous or independent movement along the Y-axis. Each set of pressing actuators 4 is sequentially configured with an X-axis drive assembly, a θ-axis rotation assembly, a Z-axis lifting assembly, and a pressing assembly 5. The X-axis drive assembly drives the pressing assembly 5 to perform linear displacement in the horizontal direction (X-axis direction), the θ-axis rotation assembly can drive the pressing assembly 5 to adjust its angle around the vertical axis (θ-axis), and the Z-axis lifting assembly realizes the lifting movement of the pressing assembly 5 along the vertical direction (Z-axis). The crimping assembly 5 is equipped with multiple adjustable-pitch crimping heads 505. The crimping surface of each crimping head 505 is positioned opposite to the product to be tested on the bearing surface of the stage unit 1. The mechanism design ensures that the crimping surface of the crimping assembly 5 remains parallel to the bearing surface of the stage throughout the entire crimping process, thereby ensuring the uniformity and accuracy of the crimping action.

[0030] The device also includes a machine base, which serves as the basic support structure of the device. Its top surface has a horizontal mounting reference surface, on which the Y-axis drive mechanism 3 is fixedly mounted via bolts. The platform unit 1 is supported above the Y-axis drive mechanism 3 by symmetrically distributed support columns or a frame-type support structure. Its bottom is rigidly connected to the machine base body via positioning pins and fastening bolts, ensuring the horizontal accuracy of the bearing surface. Two sets of pressing actuators 4 are arranged symmetrically at the left and right ends of the Y-axis drive mechanism 3. The bottom of each actuator slides into the guide rail assembly of the Y-axis drive mechanism 3 via sliders. The sliders are rigidly connected to the lead screw nut seat or motor mover of the drive mechanism. Driven by a servo motor or stepper motor, they can achieve synchronous linkage or independent single-action along the Y-axis direction, thereby precisely adjusting the horizontal distance between the actuator and the platform unit 1 according to the pressing process requirements, meeting the double-sided pressing operation space requirements of different product specifications.

[0031] The layout of multiple adsorption areas adopts a modular combination design, specifically including a central adsorption area 101 located at the geometric center of the bearing surface, and multiple extended areas distributed radially or in an array around the central adsorption area 101. The outline dimensions of the central adsorption area 101 are adapted to the smallest size of the product under test (6 inches), and this type of product can be fixed by vacuum adsorption when used alone. Each extended area consists of multiple independently controlled adsorption areas, and the adsorption areas of each extended area can be selectively combined with the central adsorption area 101 to form adsorption patterns of different sizes and shapes, thereby adapting to different size ranges of products under test (6-22 inches). Furthermore, some or all of the adsorption areas within the extended areas adopt a sub-region segmentation design, with each adsorption area consisting of two or more physically separated but interconnected sub-regions through internal flow channels or external pipelines. These sub-regions are arranged in each extended area according to a preset matrix, concentric ring, or grid pattern, and their shapes include, but are not limited to, rectangles, circles, or polygons. This design allows for precise adjustment of the adsorption force distribution within the adsorption area based on the product's edge contour. This ensures adsorption stability while reducing vacuum leakage in non-contact areas, thereby improving adsorption efficiency and energy utilization. To further enhance adsorption performance and energy efficiency, the micropores within each adsorption area employ a differentiated density distribution design, specifically following a distribution rule that gradually decreases from the center of the supporting surface outwards. Based on the product's adsorption force characteristics, this design densely arranges micropores in the central region of the supporting surface, enabling the accumulation of more negative pressure channels within a limited space, forming a high-intensity adsorption force to ensure precise positioning and stable fixation of the product's center. Meanwhile, the micropore density is appropriately reduced in the outer region of the supporting surface. This avoids stress concentration damage to the product edges due to excessive adsorption force and reduces the leakage area of ​​negative pressure gas, creating a dynamic balance where "gas adsorption exceeds leakage." This significantly reduces negative pressure gas consumption and improves system energy efficiency while maintaining adsorption effectiveness. It should be noted that the region division method, the number and shape of sub-regions, and the distribution of micropore density in the above layout can be flexibly set according to the actual application scenario, and this utility model does not impose a unique limitation on these aspects.

[0032] The crimping assembly 5 includes a mounting base 501, a first mounting plate 502, a second mounting plate 503, an adjusting base 504, and multiple pressing heads 505 connected in sequence, wherein the mounting base 501 is fixedly connected to the output end of the Z-axis lifting assembly.

[0033] The mounting base 501 and the first mounting plate 502 are connected by a rotation adjustment structure 506. This structure includes a connecting part 5061 for positioning and fixing and a rotating part 5062 for adjusting the angle. It can realize the angle adjustment and locking of the first mounting plate 502 relative to the mounting base 501, and ensure that the first mounting plate 502, the second mounting plate 503, the adjusting base 504 and the pressure head 505 rotate synchronously about an axis parallel to the bearing surface of the platform. The rotating part 5062 includes a cylindrical rotating shaft that is vertically fixed to the upper center of the mounting base 501. The axis of the rotating shaft is parallel to the bearing surface of the platform unit 1. A bearing assembly that rotates with the rotating shaft is embedded at the corresponding position of the first mounting plate 502. Through the interference fit between the inner ring of the bearing and the rotating shaft and the clearance fit between the outer ring of the bearing and the mounting plate, a hinged connection that can rotate 360° is formed. The connecting part 5061 is disposed on both sides of the mounting base 501, specifically including: at least two elongated through holes formed on the side of the mounting base 501, threaded countersunk holes disposed at corresponding positions on the first mounting plate 502, and adjusting bolts passing through the elongated through holes and engaging with the threaded countersunk holes; when the adjusting bolts are loosened, the first mounting plate 502 can rotate slightly around the rotation axis, and the sliding range of the adjusting bolts within the elongated through holes limits the angle adjustment range; when the bolts are tightened, the angular position of the first mounting plate 502 can be locked by the friction between the bolt head and the surface of the mounting base 501. To achieve high-precision angle fine adjustment, horizontal adjustment structures 507 are also symmetrically arranged on both sides of the mounting base 501, which are used in conjunction with the rotation adjustment structure 506. This structure includes a support fixed to the side of the mounting base 501, an adjusting nut embedded in the support, and a fine-tuning screw forming a threaded pair with the adjusting nut. The top surface of the fine-tuning screw abuts against the bottom surface of the first mounting plate 502 via a pad. The outer surface of the screw is provided with a thousand-level thread scale. By rotating the fine-tuning screw clockwise or counterclockwise, the first mounting plate 502 can be precisely rotated around the rotation axis by the small feed amount of the thread drive. With the bolt locking of the connecting part 5061, the angle adjustment of the crimping assembly 5 can be realized within a certain range.

[0034] When there is a parallelism deviation between the pressing surface of the pressure head 505 and the bearing surface of the platform, the angle can be compensated by the rotation adjustment structure 506 and the horizontal adjustment structure 507 between the mounting base 501 and the first mounting plate 502. The specific adjustment process is as follows: First, loosen the adjusting bolts of the connecting part 5061 to release the locking state between the first mounting plate 502 and the mounting base 501. At this time, the first mounting plate 502 can rotate slightly around the rotation axis (which is parallel to the bearing surface of the platform) that is vertically fixed to the mounting base 501. Simultaneously rotate the fine-tuning screws in the horizontal adjustment structures 507 on both sides, and use the thousand-level thread scale on the outer surface of the screw to make precise angle fine-tuning. When the fine-tuning screw is rotated clockwise or counterclockwise, the pad on the bottom surface of the first mounting plate 502 is pushed through the thread pair transmission, thereby driving the entire pressing assembly 5 to rotate around the rotation axis until the parallelism between the pressing surface and the bearing surface of the platform meets the process requirements. Finally, tighten the adjusting bolts, and lock the angle position of the first mounting plate 502 through the friction between the elongated through hole and the bolt head, so that the pressing surface of the pressing assembly 5 always remains parallel to the bearing surface of the platform during the pressing process. This adjustment mechanism achieves high-precision calibration of the parallelism of the pressing surface through the linkage design of the mechanical structure, effectively avoiding uneven pressing pressure or positional deviation caused by angular deviation.

[0035] The top surface of the mounting base 501 is provided with a wire fixing part, which includes an elastic pressure plate assembly. Specifically, one end of the elastic pressure plate is rotatably connected to a hinge seat on the top surface of the mounting base 501 via a cylindrical pin, allowing the elastic pressure plate to rotate within a 0-180° range around the pin axis. The other end of the elastic pressure plate is provided with a hook portion, forming a detachable locking structure with a corresponding annular buckle fixed on the mounting base 501. The main body of the elastic pressure plate is made of 65Mn spring steel after quenching and tempering. A high-elasticity silicone buffer layer of a certain thickness is adhered and fixed to its inner surface facing the wire. The surface of this buffer layer has a grid-like anti-slip texture, which can effectively prevent displacement or surface scratches of the wire due to vibration during crimping. When it is necessary to secure the wire, press down on the free end of the elastic clamping plate to engage the hook into the locking groove of the annular buckle for fixation. The clamping force generated by the deformation of the elastic clamping plate itself presses the wire firmly onto the positioning plane of the mounting base 501. To release the fixation, pull up on the free end of the elastic clamping plate to disengage the hook from the locking groove. This wire fixing part achieves reliable positioning of the input and output wires during crimping operations through a dual fixing mechanism of elastic clamping and self-locking buckle. At the same time, the silicone buffer layer takes into account both wire protection and anti-slip requirements.

[0036] The upper surface of the adjusting base 504 has at least one parallel extending guide groove 5041 along its length. The guide groove 5041 adopts a dovetail groove structure with a trapezoidal or rectangular cross-section. A slider that can slide along its extension direction is correspondingly provided in each guide groove 5041. The pressure head 505 is detachably connected to the slider through a locking member. Specifically, the locking member is a fastening bolt that penetrates the pressure head 505, and the end of the bolt forms a threaded pair with the threaded hole on the top of the slider. When the fastening bolt is tightened, an axial preload is generated between the fixing part and the slider, so that the top surface of the slider is tightly fitted with the top of the guide groove 5041. At the same time, the side of the slider forms a line contact or surface contact with the side wall of the guide groove 5041. The frictional locking force generated between the contact surfaces fixes the slider in the set position of the guide groove 5041, thereby locking the position of the pressure head 505 on the adjusting base 504. This structural design allows the spacing of the pressure head 505 to be adjusted along the guide groove 5041 according to the crimping point layout of the product to be tested, and to be quickly fixed by a single bolt locking method, ensuring the stability of the position of the pressure head 505 during the crimping operation.

[0037] The adjusting base 504 and the pressure head 505 thereon are detachably mounted on the lower surface of the second mounting plate 503 via a quick-positioning structure. This structure includes multiple U-shaped positioning grooves evenly distributed along one edge of the second mounting plate 503, with their openings facing the adjusting base 504. It also includes T-shaped positioning blocks correspondingly disposed on the upper surface of the adjusting base 504, the neck width of which forms a clearance fit with the opening width of the U-shaped positioning groove. Each U-shaped positioning groove has a locking knob on its side. The locking knob includes an adjusting bolt passing through the second mounting plate 503, with a matching threaded hole at a corresponding position on the adjusting base 504. The upper end of the adjusting bolt has a handle. The locking knob also includes a compression spring sleeved on the adjusting bolt, located between the upper surface of the second mounting plate 503 and the handle. When the handle is pressed down and rotated, the compression spring generates an axial preload, causing the second mounting plate 503 to fit tightly against the adjusting base 504. With the above structure, the adjusting base 504 can be quickly positioned and fixed on the second mounting plate 503. The cooperation between the T-shaped positioning block and the U-shaped positioning groove ensures the installation accuracy, while the compression spring design of the locking knob provides a stable preload, ensuring the reliability of the connection. The side wall of the guide rail groove 5041 of the adjusting base 504 is also provided with positioning scale to indicate the position of the pressure head 505 in the guide rail groove 5041.

[0038] The first mounting plate 502 is provided with multiple threaded countersunk holes, and the second mounting plate 503 is provided with bolt through holes at corresponding positions. The two are fixedly connected to the threaded countersunk holes by fastening bolts that pass through the bolt through holes.

[0039] The double-sided pressing device of this utility model also includes a drive control unit and a pneumatic control unit, both of which are mounted on the top of the machine base via a rotatable bracket. The rotatable bracket adopts a structure in which a vertical bearing seat and a rotating shaft cooperate. The bearing seat is fixed to the surface of the machine base, and the rotating shaft vertically passes through the inner ring of the bearing seat and is fixedly connected to the mounting base of the control unit. This allows the drive control unit and the pneumatic control unit to rotate freely within a range of 0-360° around an axis perpendicular to the machine base, facilitating equipment debugging and maintenance by operators from different positions. The drive control unit has a built-in multi-axis motion controller, servo driver, and electrical control circuit. It is electrically connected to the servo motor of the Y-axis drive mechanism 3, the linear module of the X-axis drive assembly, the rotary motor of the θ-axis rotation assembly, and the lead screw stepper motor of the Z-axis lifting assembly via shielded cables. It can receive control commands sent by the host computer and drive each axis to achieve precise linear displacement, angular rotation, and lifting movements based on preset motion parameters. The pneumatic control unit includes a negative pressure source, a negative pressure pipeline independently connected to each adsorption area, and a control valve installed on each negative pressure pipeline. The control valve is used to independently adjust the vacuum level of the corresponding adsorption area. After receiving a control command, the control valve can independently control the opening and closing of the negative pressure pipeline in the corresponding area, so as to achieve precise adsorption or rapid release of the product to be tested.

[0040] It should be noted that, for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A double-sided crimping device, characterized by, include: The stage unit has a bearing surface for placing the product to be tested, the bearing surface being divided into multiple independent adsorption areas, the multiple adsorption areas being configured in different combinations to accommodate products of different specifications. The crimping unit includes two sets of crimping actuators symmetrically arranged on opposite sides of the platform unit. Each set of crimping actuators includes a driving component in at least one direction, a Z-axis lifting assembly, and a crimping assembly. The driving component and the Z-axis lifting assembly respectively drive the crimping assembly to move in at least one direction and to rise and fall along the Z-axis direction. The crimping assembly includes multiple pressure heads on the same horizontal plane with adjustable spacing. The crimping surface of the pressure head is arranged opposite to the crimping surface of the product to be tested.

2. The apparatus of claim 1, wherein, The crimping unit also includes a Y-axis drive mechanism, and each group of crimping actuators is slidably connected to the Y-axis drive mechanism via a separate slider; the drive component includes an X-axis drive assembly and a θ-axis rotation assembly connected in sequence, and the X-axis drive assembly and the θ-axis rotation assembly respectively drive the crimping assembly to move in the X-axis direction and rotate around the θ-axis.

3. The apparatus according to claim 2, characterized in that, It also includes a machine base; the Y-axis drive mechanism is mounted on the machine base, the platform unit is disposed above the Y-axis drive mechanism and is fixedly connected to the machine base through a support structure; the two sets of pressing actuators are respectively disposed at both ends of the Y-axis drive mechanism and configured to move synchronously or independently along the Y-axis direction under the drive of the Y-axis drive mechanism to move closer to or further away from the platform unit.

4. The apparatus according to claim 1, characterized in that, The layout of the multiple adsorption regions includes: a central adsorption region located at the center of the bearing surface, which, when used alone, is configured to adsorb the smallest size of the test product; and multiple extension regions arranged around the central adsorption region, each of which consists of multiple adsorption regions. The central adsorption region and one or more adsorption regions in the extension regions are combined to adapt to adsorb test products of different size ranges.

5. The apparatus according to claim 4, characterized in that, Some or all of the adsorption regions within the extended region are composed of two or more physically separated but interconnected sub-regions, and the sub-regions are arranged according to a preset rule within each extended region; the shape of the sub-regions is one of rectangle, circle or polygon.

6. The apparatus according to claim 1, characterized in that, The pressing assembly includes a mounting base, a first mounting plate, a second mounting plate, an adjusting base, and multiple pressing heads connected in sequence. The mounting base is connected to the Z-axis lifting assembly. The adjusting base is provided with a guide rail groove extending in the horizontal direction. The spacing between the pressing heads is adjustable within the guide rail groove, and the pressing surfaces of the pressing heads are on the same horizontal plane.

7. The apparatus according to claim 6, characterized in that, The mounting base is connected to the first mounting plate via a rotation adjustment structure. The first mounting plate, the second mounting plate, the adjustment base, and the pressure head rotate synchronously around the mounting base via the rotation adjustment structure, and their rotation axis is parallel to the bearing surface of the platform unit.

8. The apparatus according to claim 7, characterized in that, The rotation adjustment structure includes a connecting part and a rotating part. The connecting part is configured to selectively fix or separate the first mounting plate from the mounting base. The rotating part includes a rotating shaft that is vertically fixed to the upper center position of the mounting base, and a bearing assembly that is disposed at the corresponding position of the first mounting plate and rotates with the rotating shaft. The axis of the rotating shaft is parallel to the bearing surface of the platform unit.

9. The apparatus according to claim 8, characterized in that, The connecting part includes at least two elongated through holes on both sides of the mounting base, a threaded countersunk hole at the corresponding position of the first mounting plate, and an adjusting bolt that passes through the elongated through holes and engages with the threaded countersunk hole. The adjusting bolt is configured to slide within the elongated through holes to adjust the position of the first mounting plate and to lock the first mounting plate by tightening.

10. The apparatus according to claim 8, characterized in that, The mounting base is symmetrically provided with horizontal adjustment structures on both sides. The horizontal adjustment structure includes a support base, an adjusting nut fixed in the support base, and a fine-tuning screw that forms a threaded pair with the adjusting nut. The top surface of the fine-tuning screw abuts against the bottom surface of the first mounting plate. By rotating the fine-tuning screw, the first mounting plate can be rotated around the rotation axis.

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