Refrigerator back plate press-fitting device

Abstract

The application discloses a refrigerator back plate press-fitting device, which comprises a rack for bearing a refrigerator cabinet, the rack comprising a top support and a side support, and further comprises a lifting mechanism, a conveying assembly, a positioning assembly, a plurality of edge pressing assemblies and a suction and lifting assembly, the lifting mechanism being installed on the top of the rack and used for driving the lifting movement of a lifting frame, the conveying assembly being arranged in the rack and used for conveying and initial positioning, the positioning assembly comprising a transverse positioning assembly and a longitudinal movement support arranged on the bottom of the lifting frame and capable of fixing refrigerator cabinets of different specifications, the plurality of edge pressing assemblies being connected to the longitudinal movement support and capable of reciprocating along the long axis of the longitudinal movement support and used for pressing the back plate into a clamping groove, and the suction and lifting assembly being used for adsorbing and lifting one side of the back plate. Through positioning, suction and lifting and press-fitting operations, the back plate entry angle is optimized, automatic adaptation and press-fitting of cabinet bodies of different sizes are realized, the problems of press-fitting difficulty, uneven assembly and low efficiency in the prior art are solved, and the assembly precision and quality are improved.

Description

A refrigerator back panel pressing device Technical Field

[0001] This invention relates to the field of electrical appliance assembly technology, and specifically to a refrigerator back panel pressing device. Background Technology

[0002] Currently, refrigerator back panels are typically assembled manually or semi-automatically. In actual production, refrigerator cabinets themselves have inherent dimensional errors; different batches or models of cabinets do not have completely consistent external dimensions, slot positions, and assembly gaps. Precise positioning is required during the back panel pressing process; otherwise, the back panel is prone to misalignment, tilting, or difficulty in fitting into the slot. Furthermore, some refrigerator models have inconsistent cabinet depths, varying slot heights, or complex structures, making it difficult to press the back panel smoothly into the slot in certain areas.

[0003] When switching between different refrigerator cabinet models, the positioning and pressing mechanisms of existing pressing equipment are often fixed or have limited adjustability. Changing models requires extensive adjustments, impacting production cycle time. Furthermore, because the pressing components cannot move flexibly along the longitudinal direction, the pressing force and position on the back panel are difficult to distribute evenly across its entire length, leading to uneven pressing and localized areas that cannot fit into the slots, requiring rework or manual assistance. Summary of the Invention

[0004] In order to overcome the technical defects of existing technologies, such as difficulty in positioning due to refrigerator cabinet size errors, difficulty in switching between different refrigerator cabinet models, and difficulty in pressing the back panel into the slot due to uneven pressing, the present invention provides a refrigerator back panel pressing device.

[0005] To solve the above problems, the present invention is implemented according to the following technical solution:

[0006] The first aspect of the present invention provides a refrigerator back panel pressing device, comprising a frame for supporting a refrigerator cabinet, the frame including a top support and side supports, and further comprising:

[0007] A lifting mechanism is installed on the top support. The lifting mechanism includes a lifting top plate and a lifting movable frame. The lifting movable frame is located below the lifting top plate. The lifting top plate is used to drive the lifting movable frame to move up and down in its vertical direction.

[0008] A conveying assembly is disposed within the frame assembly. The conveying assembly includes a conveyor line and a blocking mechanism. The blocking mechanism is located at the front end of the conveyor line and is used to initially position the refrigerator cabinet conveyed to the pressing position.

[0009] The positioning component includes several horizontal positioning components and vertical positioning components. The horizontal positioning components are arranged opposite each other on the side support, and the vertical positioning components are arranged on opposite sides of the conveyor line. The vertical positioning component includes a vertical moving support arranged at the bottom of the lifting moving frame. The vertical moving support can move along the internal direction of the frame for vertical positioning of the refrigerator cabinet.

[0010] Multiple edge pressing components are connected to the longitudinal moving bracket and can reciprocate along the long axis of the longitudinal moving bracket. Each edge pressing component is used to press the refrigerator back panel into the slot of the refrigerator cabinet.

[0011] A lifting assembly is provided at the bottom of the lifting and moving frame. The lifting assembly is used to adhere to the back panel of the refrigerator and lift one side of the back panel of the refrigerator before pressing.

[0012] In conjunction with the first aspect, the present invention also provides a first specific embodiment of the first aspect, wherein the lateral positioning component includes a lateral positioning cylinder, a lateral push plate and a lateral push pad, the lateral positioning cylinder is mounted on the side bracket, and the lateral push plate moves toward the conveyor line to perform lateral positioning of the refrigerator cabinet.

[0013] In conjunction with the first aspect, the present invention also provides a second specific embodiment of the first aspect, wherein the longitudinal positioning component further includes a longitudinal fixing bracket, a longitudinal moving screw, and a longitudinal moving servo. The longitudinal fixing bracket is disposed on both sides of the bottom of the lifting moving frame. The longitudinal moving screw is driven by the longitudinal moving servo and extends in the longitudinal direction. The longitudinal moving bracket is threadedly connected to the longitudinal moving screw and moves in the inner direction of the frame.

[0014] In conjunction with the first aspect, the present invention also provides a third specific embodiment of the first aspect, wherein the longitudinal moving bracket is a strip structure and has a sliding mating surface along its longitudinal direction, the sliding mating surface being used to install multiple pressing components and guide the reciprocating motion of the multiple pressing components.

[0015] In conjunction with the first aspect, the present invention also provides a fourth specific embodiment of the first aspect, wherein the pressing assembly includes a pressing reciprocating cylinder, a pressing telescopic cylinder, and a pressing roller;

[0016] The pressing reciprocating cylinder is mounted on the longitudinal moving bracket and mates with the sliding mating surface; the pressing telescopic cylinder is connected to the output end of the pressing reciprocating cylinder; and the pressing roller is connected to the output end of the pressing telescopic cylinder.

[0017] The output end of the pressing reciprocating cylinder is set toward the length direction of the refrigerator back panel, and is used to drive the pressing telescopic cylinder and the pressing roller to reciprocate along the long axis of the longitudinal moving bracket.

[0018] The output end of the pressing and telescopic cylinder is arranged towards the refrigerator cabinet, and is used to drive the pressing roller to move closer to or away from the refrigerator back panel in the vertical direction.

[0019] In conjunction with the first aspect, the present invention also provides a fifth specific embodiment of the first aspect, wherein the lifting mechanism includes a lifting servo, a lifting reducer and a lifting lead screw, the lifting reducer is connected to the output shaft of the lifting servo, and the lifting lead screw is connected to the output end of the lifting reducer;

[0020] The lifting screw is arranged vertically along the frame, and the screw nut of the lifting screw is fixedly connected to the lifting top plate, so that the lifting servo drives the lifting top plate and the lifting moving frame below it to rise and fall vertically.

[0021] In conjunction with the first aspect, the present invention also provides a sixth specific embodiment of the first aspect, wherein the suction lifting assembly includes a suction lifting cylinder, a suction cup mounting plate, a plurality of flexible joints and a suction cup disposed below the flexible joints;

[0022] The extension and retraction direction of the suction lifting cylinder is arranged towards the conveyor line, and it is used to drive the suction cup mounting plate and the suction cup to rise and fall in the vertical direction.

[0023] In conjunction with the first aspect, the present invention also provides a seventh specific embodiment of the first aspect, which further includes:

[0024] The control module is connected to the lifting mechanism, conveying component, lateral positioning component, longitudinal positioning component, suction lifting component and multiple pressing components, and is used to control the action of each component.

[0025] In conjunction with the first aspect, the present invention also provides an eighth specific embodiment of the first aspect, wherein the pressing step is performed according to the control module, as follows:

[0026] The refrigerator cabinet is conveyed to the blocking mechanism via a conveyor line. The control module drives the lateral positioning component to position the refrigerator cabinet laterally; drives the longitudinal movement servo to move the longitudinal movement bracket inward to position the refrigerator cabinet longitudinally; controls the lifting component to adsorb the back panel and lift one side of it; controls multiple pressing components installed on the longitudinal movement bracket to reciprocate in the longitudinal direction; and causes the pressing roller to press the back panel into the slot of the refrigerator cabinet.

[0027] In conjunction with the first aspect, the present invention also provides a ninth specific embodiment of the first aspect, wherein when the refrigerator back panel is pressed into the middle section of the slot, the suction lifting assembly is controlled to disengage from the back panel.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] This invention discloses a refrigerator back panel pressing device. By incorporating a lifting mechanism, a conveying assembly, lateral and longitudinal positioning components, a reciprocating pressing edge assembly, and a lifting suction assembly, it achieves automatic positioning, angle adjustment, and uniform pressing of the refrigerator back panel. The lateral positioning assembly and the longitudinal moving bracket, which can move along the internal direction of the frame, enable automatic positioning of refrigerator cabinets of different sizes, adapting to different cabinet models and improving assembly compatibility. The combination of the longitudinal moving bracket and multiple pressing edge components allows the pressing edge assembly to reciprocate along the length of the back panel, achieving uniform pressing along the entire groove, avoiding localized pressing difficulties, and improving pressing consistency. The lifting suction assembly can lift one side of the back panel before pressing, making the insertion angle of the back panel more suitable for entering the groove, which helps reduce back panel deformation and pressing resistance. The lifting mechanism drives the entire pressing structure to move vertically, making the pressing height controllable, further improving pressing stability and assembly accuracy. Overall, this invention offers precise positioning, strong adaptability, and high pressing quality, effectively solving the pressing difficulties and uneven assembly problems in existing technologies. Attached Figure Description

[0030] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0031] Figure 1 is a perspective view of a refrigerator back panel pressing device according to the present invention;

[0032] Figure 2 is a side view of a refrigerator back panel pressing device according to the present invention;

[0033] Figure 3 is a side view of a refrigerator back panel pressing device according to the present invention;

[0034] Figure 4 is a side view of the refrigerator back panel pressing device of the present invention during pressing.

[0035] Figure 5 is a side view of the refrigerator back panel pressing device of the present invention during pressing.

[0036] Figure 6 is a flowchart of a refrigerator back panel pressing method according to the present invention;

[0037] In the diagram: 1-Frame assembly, 2-Conveying and blocking assembly, 3-Transverse positioning assembly, 4-Refrigerator, 5-Vertical positioning assembly, 6-Edge pressing assembly, 7-Suction lifting assembly, 11-Side bracket, 12-Top bracket, 13-Lifting servo, 14-Lifting reducer, 15-Lifting screw, 16-Guide column and guide sleeve, 17-Lifting top plate, 18-Lifting moving frame, 21-Conveyor line, 22-Blocking mechanism, 31-Transverse positioning cylinder, 32-Transverse push plate, 33-Transverse push pad, 51-Vertical push pad, 52-Vertical push beam, 53-Vertical moving bracket, 54-Vertical moving servo, 55-Vertical moving screw, 56-Vertical fixed bracket, 61-Edge pressing reciprocating cylinder, 62-Edge pressing telescopic cylinder, 63-Edge pressing roller, 71-Suction lifting cylinder, 72-Suction cup mounting plate, 73-Flexible joint, 74-Suction cup. Detailed Implementation

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] Example 1

[0040] As shown in Figures 1 to 5;

[0041] The first aspect of the present invention provides a refrigerator back panel pressing device, including a frame for supporting the refrigerator cabinet, the frame including a top support and side supports, and further comprising:

[0042] The lifting mechanism is mounted on the top support and includes a lifting top plate and a lifting movable frame. The lifting movable frame is located below the lifting top plate, and the lifting top plate is used to drive the lifting movable frame to move up and down in its vertical direction.

[0043] The conveying assembly is located inside the frame and includes a conveyor line and a blocking mechanism. The blocking mechanism is located at the front end of the conveyor line and is used to initially position the refrigerator cabinet that is conveyed to the pressing position.

[0044] The positioning component includes several horizontal positioning components and vertical positioning components. The horizontal positioning components are arranged opposite each other on the side support, and the vertical positioning components are arranged on opposite sides of the conveyor line. The vertical positioning component includes a vertical moving support arranged at the bottom of the lifting moving frame. The vertical moving support can move along the internal direction of the frame to vertically position the refrigerator cabinet.

[0045] Multiple edge pressing components are connected to the longitudinal moving bracket and can reciprocate along the long axis of the longitudinal moving bracket. Each edge pressing component is used to press the refrigerator back panel into the slot of the refrigerator cabinet.

[0046] The suction lifting component is located at the bottom of the lifting and moving frame. The suction lifting component is used to suction the back panel of the refrigerator and lift one side of the back panel of the refrigerator before pressing.

[0047] As shown in Figures 1 and 2, this embodiment provides a refrigerator back panel pressing device, which mainly includes a frame 1, a conveying assembly 2, a transverse positioning assembly 3, a longitudinal positioning assembly 5, a pressing edge assembly 6, and a lifting assembly 7.

[0048] The frame 1 serves as the main support for the entire device, supporting the refrigerator cabinet 4. The frame 1 specifically includes a top support 12 and side supports 11. The side supports 11 are distributed on both sides of the frame 1 and support the top support 12, together forming a frame structure.

[0049] The lifting mechanism is mounted on the top bracket 12 and is used to drive the overall lifting and lowering of the pressing and positioning mechanism below. Specifically, the lifting mechanism includes a lifting servo 13, a lifting reducer 14, a lifting screw 15, a lifting top plate 17, and a lifting moving frame 18. The lifting servo 13 drives the lifting screw 15 to rotate via the lifting reducer 14, and the nut end of the lifting screw 15 is connected to the lifting top plate 17. The lifting moving frame 18 is located below the lifting top plate 17 and is connected to the lifting top plate 17 via guide columns and guide sleeves 16. Driven by the lifting servo 13, the lifting top plate 17 drives the lifting moving frame 18 to move vertically, thereby adapting to the pressing requirements of refrigerator cabinets 4 at different heights.

[0050] The conveying assembly 2 is located inside the lower part of the frame 1 and mainly includes a conveyor line 21 and a blocking mechanism 22. The conveyor line 21 is used to convey the refrigerator cabinet 4 to the pressing station. The blocking mechanism 22 is located at the front end of the conveyor line 21. When the refrigerator cabinet 4 reaches the predetermined position, the blocking mechanism 22 blocks it to achieve preliminary longitudinal positioning.

[0051] The positioning assembly is used to securely fix the refrigerator cabinet 4 before pressing. It includes several lateral positioning components 3 and longitudinal positioning components 5. The lateral positioning components 3 are arranged opposite each other on the side supports 11 of the frame 1, and the refrigerator cabinet 4 is positioned laterally by pushing inward from both sides. The longitudinal positioning components 5 are arranged on opposite sides of the conveyor line 21 (usually the front and rear sides of the pressing position). In this embodiment, the key component of the longitudinal positioning assembly 5, the longitudinal moving bracket 53, is located at the bottom of the lifting moving frame 18. This means that the longitudinal moving bracket 53 both rises and falls with the lifting moving frame 18 and can move horizontally relative to the lifting moving frame 18. Specifically, the longitudinal moving bracket 53 can move along the internal direction (i.e., longitudinally) of the frame 1 to accommodate refrigerator cabinets 4 of different lengths or depths and to accurately position them longitudinally.

[0052] Multiple edge-pressing components 6 are provided; in this embodiment, there are specifically two edge-pressing components 6, which are connected to the longitudinal moving bracket 53. Since the edge-pressing components 6 are mounted on the longitudinal moving bracket 53, their positions can be adjusted along with the longitudinal moving bracket 53. Simultaneously, each edge-pressing component 6 is designed to reciprocate along the long axis of the longitudinal moving bracket 53. During operation, the edge-pressing components 6 (typically including edge-pressing rollers 63) are used to press the edge of the refrigerator back panel into the slots of the refrigerator cabinet 4.

[0053] The lifting assembly 7 is located at the bottom of the lifting and moving frame 18. Situated between two sets of longitudinal positioning assemblies, the lifting assembly 7 is used to adhere the refrigerator back panel. Its unique feature is that, before or during the pressing process, the lifting assembly 7 adheres to the back panel and lifts it upwards, causing one side of the refrigerator back panel to tilt upwards. This, in conjunction with the pressing assembly 6 on the other side, creates an angle conducive to the back panel cutting into the slot, solving the problem of difficulty in aligning and pressing the back panel.

[0054] In conjunction with the first aspect, the present invention also provides a first specific embodiment of the first aspect, wherein the lateral positioning component includes a lateral positioning cylinder, a lateral push plate and a lateral push pad, the lateral positioning cylinder is mounted on a side bracket, and the lateral push plate moves toward the conveyor line to perform lateral positioning of the refrigerator cabinet.

[0055] In this embodiment, the lateral positioning component 3 mainly consists of a lateral positioning cylinder 31 for driving components, a lateral push plate 32 for actuating components, and a lateral push pad 33 for contact buffer components.

[0056] Specifically, the transverse positioning cylinder 31 is fixedly mounted on the side bracket 11 of the frame 1. To ensure the balance and accuracy of positioning, the transverse positioning cylinder 31 is usually provided on both opposite sides of the side bracket 11. The output end of the transverse positioning cylinder 31 is fixedly connected to the transverse push plate 32. The transverse push pad 33 is provided on the front vertical surface of the transverse push plate 32, that is, on the side of the transverse push plate 32 facing the conveyor line 21 and the refrigerator cabinet 4.

[0057] The working process is as follows: When the refrigerator cabinet 4 reaches the pressing station, the lateral positioning cylinder 31 installed on the side bracket 11 is activated, driving the lateral push plate 32 to move horizontally towards the conveyor line 21 (i.e., towards the inside of the frame 1). As the lateral push plate 32 advances, the lateral push pad 33 contacts the side wall of the refrigerator cabinet 4. Through the coordinated action of the lateral positioning components 3 on both sides (or pushing against the reference surface on one side), the refrigerator cabinet 4 is corrected and limited on the predetermined center line, thereby achieving precise lateral positioning of the refrigerator cabinet 4 and ensuring the accuracy of the subsequent pressing position.

[0058] In conjunction with the first aspect, the present invention also provides a second specific embodiment of the first aspect, wherein the longitudinal positioning component further includes a longitudinal fixed bracket, a longitudinal moving screw, and a longitudinal moving servo. The longitudinal fixed bracket is disposed on both sides of the bottom of the lifting moving frame, the longitudinal moving screw is driven by the longitudinal moving servo and extends in the longitudinal direction, and the longitudinal moving bracket is threadedly connected to the longitudinal moving screw and moves in the inner direction of the frame 1.

[0059] To achieve compatibility with refrigerator cabinets of different sizes and adjust the pressing position, the longitudinal positioning component 5 adopts a high-precision servo screw drive mechanism. Specifically, it includes a longitudinal fixed bracket 56, a longitudinal movement servo 54, a longitudinal movement screw 55, and the aforementioned longitudinal movement bracket 53.

[0060] In terms of spatial layout, the longitudinal fixed bracket 56 serves as the mounting base for this component and is securely mounted on both sides of the bottom of the lifting and moving frame 18. This design allows the entire longitudinal positioning component to move up and down as a whole, following the lifting and moving frame 18. The longitudinal movement servo 54 is mounted on the longitudinal fixed bracket 56, and its output end is connected to and drives the longitudinal movement screw 55. The longitudinal movement screw 55 extends horizontally along the longitudinal direction of the frame 1 (i.e., the depth direction of the refrigerator's entry and exit).

[0061] The longitudinal moving bracket 53 is provided with a threaded hole or screw nut that mates with the longitudinal moving lead screw 55, thereby achieving a threaded connection. Simultaneously, the longitudinal moving bracket 53 is typically equipped with a guide rail to ensure smooth movement.

[0062] The working principle is as follows: When the system receives a changeover command or a press-fit positioning command, the control module drives the longitudinal movement servo 54 to rotate. The rotational motion of the servo motor is converted into linear motion through the longitudinal movement lead screw 55, which drives the longitudinal movement bracket 53, which is threadedly connected to the lead screw, to reciprocate along the inner (longitudinal) direction of the frame 1. Since the pressing assembly 6 is installed on the longitudinal movement bracket 53, this movement process not only achieves the longitudinal positioning of the refrigerator cabinet 4 (by pushing), but also moves the pressing assembly 6 to the pressing starting position suitable for the current refrigerator specifications, thereby realizing automatic adjustment and convenient changeover of the equipment.

[0063] In conjunction with the first aspect, the present invention also provides a third specific embodiment of the first aspect, wherein the longitudinal moving bracket is a strip structure and has a sliding mating surface along its longitudinal direction, the sliding mating surface being used to install and guide the reciprocating motion of multiple pressing components.

[0064] In this embodiment, in order to continuously and uniformly roll the refrigerator back panel, the longitudinal moving bracket 53 is designed as a strip structure of a certain length (e.g., a long strip profile or machined part). The length of the strip structure typically covers or exceeds the length range of the refrigerator back panel to be pressed.

[0065] To enable the movement of the pressure plate assembly 6, a sliding mating surface is machined or installed on the side or top surface of the longitudinal moving bracket 53 along its longitudinal direction (i.e., the long axis direction). In practical engineering applications, the sliding mating surface is usually composed of a high-precision linear guide, a slide groove, or a dovetail groove.

[0066] Multiple pressing components 6 are mounted on the sliding mating surface via sliders or adapters. This mating method establishes a sliding pair relationship: on the one hand, the longitudinal moving bracket 53 provides a stable mounting base for the pressing components 6 and withstands the reaction force during pressing; on the other hand, the sliding mating surface plays a key guiding role, restricting the degree of freedom of the pressing components 6, so that they can only reciprocate along the long axis of the longitudinal moving bracket 53.

[0067] During the pressing process, the pressing assembly 6 (and its pressing roller 63) does not only press down at a fixed point, but can also roll and press along the sliding mating surface along the edge of the refrigerator back panel under the action of a drive device (such as the pressing reciprocating cylinder 61). This structure ensures that the pressing roller can smoothly and continuously press the edge of the back panel into the slot, avoiding gaps or wavy deformation that may occur during multi-point segmented pressing.

[0068] In conjunction with the first aspect, the present invention also provides a fourth specific embodiment of the first aspect, wherein the pressing assembly includes a pressing reciprocating cylinder, a pressing telescopic cylinder, and a pressing roller;

[0069] The pressing reciprocating cylinder is mounted on the longitudinal moving bracket and mates with the sliding mating surface; the pressing telescopic cylinder is connected to the output end of the pressing reciprocating cylinder; and the pressing roller is connected to the output end of the pressing telescopic cylinder.

[0070] The output end of the pressing reciprocating cylinder is set towards the length direction of the refrigerator back panel, and is used to drive the pressing telescopic cylinder and the pressing roller to reciprocate along the long axis of the longitudinal moving bracket.

[0071] The output end of the pressing and telescopic cylinder is arranged towards the refrigerator cabinet, and is used to drive the pressing roller to move towards or away from the refrigerator back panel in a vertical direction.

[0072] In this embodiment, the pressing assembly 6 adopts a multi-stage drive structure to achieve complex pressing actions, which mainly includes a pressing reciprocating cylinder 61 that provides horizontal power, a pressing telescopic cylinder 62 that provides vertical pressure, and a pressing roller 63 that directly contacts the workpiece.

[0073] In terms of installation, the pressing reciprocating cylinder 61, as the first-stage driving component, is mounted on the longitudinal moving bracket 53. It is in close contact with the sliding mating surface mentioned in the previous embodiment, thereby utilizing the guiding effect of the sliding mating surface to ensure the straightness of the movement trajectory. The output end (or slider end) of the pressing reciprocating cylinder 61 is set towards the length direction of the refrigerator back panel (i.e., the longitudinal direction of the frame 1), and its main function is to drive the entire pressing actuator to reciprocate along the long axis of the longitudinal moving bracket 53, thereby covering the entire side of the refrigerator back panel.

[0074] The edge-pressing telescopic cylinder 62, as a second-stage drive component, is suspended and mounted at the bottom (or moving end) of the edge-pressing reciprocating cylinder 61. This means that the edge-pressing telescopic cylinder 62 is not directly fixed to the bracket, but moves horizontally along with the edge-pressing reciprocating cylinder 61. The output end of the edge-pressing telescopic cylinder 62 is arranged vertically toward the refrigerator cabinet 4 (i.e., vertically downward).

[0075] The pressing roller 63 is rotatably mounted on the output end of the pressing telescopic cylinder 62.

[0076] When pressing is required, the pressing telescopic cylinder 62 extends, driving the pressing roller 63 to move vertically towards the refrigerator back panel until sufficient downward pressure is applied to press the edge of the back panel into the slot. Simultaneously or subsequently, the pressing reciprocating cylinder 61 actuates, dragging the pressing telescopic cylinder 62 and the pressing roller 63 along the edge of the back panel, thereby completing the continuous rolling operation. After pressing is completed, the pressing telescopic cylinder 62 retracts, driving the pressing roller 63 away from the refrigerator back panel for resetting or starting the next cycle.

[0077] In conjunction with the first aspect, the present invention also provides a fifth specific embodiment of the first aspect, wherein the lifting mechanism includes a lifting servo, a lifting reducer and a lifting lead screw, the lifting reducer is connected to the output shaft of the lifting servo, and the lifting lead screw is connected to the output end of the lifting reducer;

[0078] The lifting screw is arranged vertically along the frame 1, and the screw nut of the lifting screw is fixedly connected to the lifting top plate, so that the lifting servo drives the lifting top plate and the lifting moving frame below it to rise and fall vertically.

[0079] In this embodiment, the lifting mechanism, as the core power unit driving the entire pressing head to move up and down, adopts a "servo motor + reducer + lead screw" transmission combination. Specifically, it includes a power source lifting servo 13, a torque amplification component lifting reducer 14, and a transmission execution component lifting lead screw 15.

[0080] In terms of connection, the lifting reducer 14 is directly connected to the output shaft of the lifting servo 13 to reduce the speed and increase the output torque. The top end of the lifting screw 15 is coaxially connected to the output end of the lifting reducer 14. In terms of spatial layout, the lifting screw 15 is arranged vertically along the vertical direction (Z-axis direction) of the frame 1.

[0081] To achieve motion transmission, the lead screw nut of the lifting lead screw 15 is fixedly connected to the lifting top plate 17. The aforementioned lifting moving frame 18 is then securely installed below the lifting top plate 17.

[0082] When the pressing height needs to be adjusted or a pressing action is required, the lifting servo 13 starts to rotate. After being reduced in speed by the lifting reducer 14, it drives the lifting screw 15 to rotate. Since the screw nut is fixed on the lifting top plate 17, restricting its rotational freedom, the rotational movement of the screw forces the screw nut to drive the lifting top plate 17 to move linearly along the screw axis. In turn, the lifting top plate 17 drives the lifting moving frame 18 below it (and all pressing and positioning components installed on the moving frame) to move smoothly and accurately in the vertical direction, thereby realizing the feed and return of the pressing station.

[0083] In conjunction with the first aspect, the present invention also provides a sixth specific embodiment of the first aspect, wherein the suction lifting assembly includes a suction lifting cylinder, a suction cup mounting plate, a plurality of flexible joints and a suction cup disposed below the flexible joints;

[0084] The extension and retraction direction of the suction lifting cylinder is arranged towards the conveyor line, and it is used to drive the suction cup mounting plate and the suction cup to rise and fall in the vertical direction.

[0085] In this embodiment, the suction lifting assembly 7 is designed to perform "adsorption-lifting". The core structure includes a power component suction lifting cylinder 71 and an execution component combination suction cup mounting plate 72, flexible joint 73 and suction cup 74.

[0086] In terms of spatial arrangement, the lifting cylinder 71 is installed at the bottom of the lifting frame, and its telescopic output end is designed to face the conveyor line 21 (i.e., vertically downward). This arrangement ensures that the cylinder's axis of motion is perpendicular to the plane of the refrigerator back panel, enabling it to directly drive the components below for feeding.

[0087] The suction cup mounting plate 72 is fixedly connected to the output end of the suction lifting cylinder 71, serving as a support platform for the suction cup. Below the suction cup mounting plate 72, multiple flexible joints 73 (e.g., spring buffer rods or universal joints) are evenly distributed. The suction cup 74 is correspondingly mounted at the ends of these flexible joints 73.

[0088] Once the refrigerator back panel is in position, the lifting cylinder 71 extends, driving the suction cup mounting plate 72 and suction cup 74 to descend vertically towards the back panel. At this point, the flexible joint 73 plays a crucial role, not only buffering the impact of the suction cup contacting the back panel, but more importantly, automatically compensating for the angular deviation between the suction cup and the tilted back panel during the subsequent lifting process, preventing air leakage or detachment. Afterward, the lifting cylinder 71 retracts, causing one side of the back panel to tilt, creating conditions for the subsequent insertion of the edge-pressing components.

[0089] In conjunction with the first aspect, the present invention also provides a sixth specific embodiment of the first aspect, which further includes:

[0090] The control module is connected to the lifting mechanism, conveying assembly, lateral positioning assembly, longitudinal positioning assembly, suction lifting assembly, and multiple pressing assemblies, and is used to control the movement of each assembly. By controlling the movement of these structures through signals, an automated pressing process is achieved.

[0091] Example 2

[0092] A second aspect of the present invention provides a pressing method applied to the refrigerator back panel pressing device of the first aspect of the present invention, characterized in that the following steps are executed according to the control module:

[0093] S1 transports the refrigerator cabinet to the blocking mechanism via the conveyor line;

[0094] The S2 drive lateral positioning component enables the refrigerator cabinet to be positioned laterally.

[0095] The S3 drive longitudinal movement servo moves the longitudinal movement bracket inward to the inside of the frame, thus positioning the refrigerator cabinet longitudinally.

[0096] S4 controls the suction lifting component to adhere to the back panel and lift one side of it;

[0097] S5 controls multiple pressing components mounted on the longitudinal moving bracket to reciprocate in the longitudinal direction, causing the pressing rollers to press the back panel into the slot of the refrigerator cabinet.

[0098] In this embodiment, the method involves the equipment's control module (e.g., PLC or industrial computer) issuing commands to coordinate the sequential actions of each actuator. The specific workflow is as follows:

[0099] Perform the S1 conveying step. The control module starts the conveying assembly 2, drives the conveyor line 21 to operate, and smoothly conveys the refrigerator cabinet 4 to be assembled to the pressing station. When the sensor detects that the refrigerator cabinet 4 has reached the predetermined position, the blocking mechanism 22 located at the front end of the conveyor line is activated (raised or blocked) to block the refrigerator cabinet 4, thereby completing the initial positioning and longitudinal coarse positioning.

[0100] Then, the S2 lateral positioning step is executed. After the refrigerator cabinet 4 is in place, the control module controls the lateral positioning component 3 installed on the side bracket to move. Specifically, the lateral positioning cylinders 31 on the left and right sides extend synchronously or sequentially, pushing the lateral push plate 32 and the lateral push pad 33 towards the center. The lateral push pad 33 flexibly contacts the side wall of the refrigerator cabinet 4, correcting and fixing the refrigerator cabinet 4 on the center line of the conveyor line.

[0101] Next, the S3 longitudinal positioning step is executed. The control module drives the longitudinal movement servo 54 to rotate, and through the transmission of the longitudinal movement screw 55, drives the longitudinal movement bracket 53 to move along the inner side of the frame. The longitudinal push beam 52 and the longitudinal push pad 51 installed on the longitudinal movement bracket 53 move accordingly and press against the front and rear sides of the refrigerator cabinet 4. At this time, combined with the lateral positioning in S2, the refrigerator cabinet 4 is "clamped" in both the length and width directions, and is in a fixed and firm state, eliminating the influence of cabinet looseness on the pressing accuracy.

[0102] After positioning is complete, the S4 lifting step is executed. The control module controls the lifting cylinder 71 of the lifting assembly 7 to extend, causing the suction cup 74 to descend until it contacts the surface of the refrigerator back panel. The vacuum system is activated, allowing the suction cup 74 to firmly adhere to the back panel. Subsequently, the lifting cylinder 71 retracts (rises), causing one side of the back panel to lift upwards (i.e., tilt). At this time, the back panel is tilted, and the edge of the side not adhered to naturally aligns downwards, creating the optimal guide angle for entry into the slot.

[0103] Finally, the S5 pressing step is performed. While maintaining the back panel in a tilted state, the control module controls the pressing assembly 6 mounted on the longitudinal moving bracket 53 to start working. First, the pressing telescopic cylinder 62 extends, causing the pressing roller 63 to press down and contact the edge of the back panel. Then, the pressing reciprocating cylinder 61 starts, driving the pressing roller 63 to reciprocate and press along the longitudinal direction (i.e., the slot direction). Under the guidance and pressure of the roller, the edge of the back panel smoothly slides into the slot of the refrigerator cabinet 4.

[0104] As a preferred control logic, when the pressing roller 63 travels along the slot to the middle section (such as when the stroke reaches two-thirds), the control module will control the lifting assembly 7 to break the vacuum and release the back plate, so that the back plate can be completely flattened and pressed into the slot by its own weight and roller pressure, thereby completing the entire pressing cycle.

[0105] Example 3

[0106] To further improve the pressing quality and adaptability, this embodiment provides an adaptive control module as an additional function of the device and control module, specifically including:

[0107] The three-dimensional vision module is used to acquire three-dimensional image data of the refrigerator cabinet and back panel, and to identify the actual position, posture angle and size deviation of the refrigerator cabinet and back panel based on the three-dimensional image data.

[0108] The pressing trajectory generation module is connected to the three-dimensional vision module and is used to automatically generate the target trajectory for backplate pressing based on the identified dimensional deviation and actual position.

[0109] A real-time feedback control module, connected to a pressure sensor and a displacement sensor, is used to collect roller pressing pressure and displacement data in real time during the pressing process, and to dynamically adjust the target trajectory based on the real-time data.

[0110] The model switching module is used to store the pressing parameters of multiple refrigerator cabinet models, and automatically adjusts the initial position parameters of the horizontal positioning, vertical positioning and pressing edge components when a model switching command is received.

[0111] The learning optimization module, connected to the real-time feedback control module, is used to record pressure data, displacement data, and trajectory adjustment amounts during multiple pressing processes, and to optimize and update the pressing parameters based on the historical data.

[0112] 3D vision module: used to identify the actual position, angle, and dimensional deviation of the refrigerator cabinet and back panel;

[0113] Pressing trajectory generation module: Automatically generates the most suitable pressing path based on the recognition results;

[0114] Real-time feedback control module: Monitors the pressure and position of the pressing roller in real time through pressure and displacement sensors, and dynamically adjusts the pressing speed and stroke;

[0115] Model switching module: After inputting parameters for different cabinet models, the system automatically adjusts the horizontal and vertical positioning travel range and the initial position of the edge pressing components, without the need for manual adjustment;

[0116] Learning optimization module: By recording past pressing data, it automatically optimizes pressing parameters, thereby optimizing the control strategy step by step.

[0117] This system enables: automatic recognition of back panel deformation, automatic matching of pressing trajectory, real-time adjustment of pressing pressure, and one-click switching of cabinet models. It improves pressing consistency and avoids over- or under-pressing.

[0118] For 3D vision modules

[0119] The 3D vision module includes a depth camera, a structured light projector, or a laser scanning component, used to construct point cloud data for the front and back panels of the refrigerator cabinet.

[0120] The 3D vision module further includes a pose calculation unit, which is used to obtain the offset ΔX, ΔY, ΔZ and rotation angle Δθ of the back panel relative to the refrigerator cabinet slot based on point cloud data.

[0121] The 3D vision module captures and identifies the actual feature points of the refrigerator cabinet slots. The system calculates the amount of deviation that needs to be compensated by comparing the "actual coordinates" with the "theoretical reference coordinates".

[0122] Let the coordinates of the theoretical reference point be (X0, Y0), and the coordinates of the actual point recognized by vision be (X1, Y1).

[0123] The positional deviations (ΔX, ΔY) calculated by the system are as follows:

[0124] ΔX = X1 - X0

[0125] ΔY = Y1 - Y0

[0126] For the angular deviation Δθ, the system selects two feature points A and B on the edge of the slot and calculates the difference between the actual slope of the line connecting them and the theoretical slope:

[0127]

[0128] Execution logic: The control module sends ΔX to the lateral positioning cylinder for push plate position compensation, and sends ΔY to the longitudinal movement servo to adjust the starting point of pressing.

[0129] in,

[0130] Δθ: Represents the angular deviation value. That is, the rotational offset of the actual posture of the refrigerator cabinet (or back panel) relative to the theoretical standard posture. The control module will control the pressing mechanism (or workpiece adjustment mechanism) to rotate by the corresponding angle to compensate based on this value.

[0131] X A1 : Represents the actual lateral coordinate value of the first feature point (point A). This value is the X-axis coordinate of one end of the slot (such as the left reference point) extracted in the established spatial coordinate system after the vision module scans and processes the image.

[0132] Y A1 : Represents the actual longitudinal coordinate value of the first feature point (point A). This value is the Y-axis coordinate of the same end (point A) of the card slot extracted by the vision module.

[0133] X B1 : Represents the actual lateral coordinate value of the second feature point (point B). This value is the X-axis coordinate of the other end of the slot (such as the right reference point) extracted by the vision module.

[0134] Y B1: Represents the actual longitudinal coordinate value of the second feature point (point B). This value is the Y-axis coordinate of the same end (point B) of the card slot extracted by the vision module.

[0135] arctan: Represents the arctangent trigonometric function. Used to calculate the arctangent trigonometric function from point A(X). A1 Y A1 ) and point B (X) B1 Y B1 The slope of the straight line connecting the two lines corresponds to the tilt angle (i.e., the actual absolute angle of the workpiece).

[0136] θ ref : Indicates the theoretical reference angle (baseline angle). This is a standard parameter preset in the "Model Switching Module," representing the angle that the refrigerator cabinet should maintain under ideal transport conditions (e.g., if the transport line is also horizontal, then θ). ref (Usually set to 0°).

[0137] For the trajectory generation module

[0138] The pressing trajectory generation module is used to generate a pressing trajectory based on the offset identified by 3D vision. The pressing trajectory includes at least two parameters: the longitudinal movement path of the pressing component and the pressing depth of the roller. The pressing trajectory generation module generates the pressing path through interpolation algorithm, curve fitting algorithm or path planning algorithm based on optimization objective.

[0139] To prevent damage to the backplate or insufficient pressure that results in failure to press in, the system presets a pressure threshold based on the physical parameters of the pressing rollers.

[0140] The formula for estimating the theoretically required pressing force F is as follows:

[0141]

[0142] in:

[0143] The positive pressure generated by the interference fit when the backplate is embedded in the slot (based on the design interference amount) And the material's elastic modulus E is estimated, that is ).

[0144] The coefficient of sliding friction between the back plate and the slot (usually taken as 0.3~0.4).

[0145] The back panel is sucked up and bent to generate the required elastic deformation force.

[0146] Safety factor (usually taken as 1.2~1.5).

[0147] Execution logic: The system sets the calculated F as the target pressure value. Fmax = 1.2F is set as the alarm upper limit, and Fmin = 0.8F as the minimum effective pressure.

[0148] For real-time feedback control, the real-time feedback control module is used to monitor the real-time pressure and displacement data of the pressing assembly. When abnormal pressure, sudden force change, or displacement deviation exceeding the threshold is detected, the pressing trajectory is dynamically adjusted.

[0149] Dynamic adjustments include: reducing pressing speed, correcting pressing depth, adjusting the contact angle between the pressing roller and the back plate, and triggering partial retraction or re-pressing.

[0150] A pressure threshold is incorporated into the real-time feedback control module, which includes a pressure threshold judgment unit. This unit compares the real-time pressure with a preset pressure range. When the real-time pressure exceeds the upper limit threshold, a pressure reduction or reversal action is performed. When the real-time pressure is below the lower limit threshold, a pressure replenishment action is performed.

[0151] The model switching module includes a model parameter library, which stores the reference dimensions, slot depth, horizontal positioning reference, vertical positioning reference, and initial coordinates of the pressing components for different refrigerator models. After receiving the model selection command, the model switching module automatically sets the initial pressing position according to the model parameter library, without the need for manual adjustment.

[0152] The learning optimization module uses pressure-displacement curve data from historical pressing processes to correct the parameters in the pressing trajectory generation module through statistical analysis or machine learning algorithms, making subsequent pressing processes closer to the theoretically optimal pressing conditions.

[0153] The learning optimization module employs one of the following algorithms: gradient descent-based parameter optimization algorithm, historical weight-based linear regression algorithm, decision tree-based segmented optimization algorithm, or convolutional neural network-based local path adaptation algorithm.

[0154] The 3D vision module, pressing trajectory generation module, real-time feedback control module, and learning optimization module work together in the following order: visual recognition → trajectory generation → real-time feedback correction → data writing to the learning module → pressing parameter update.

[0155] The host computer runs an image processing algorithm (template matching + feature point detection + depth estimation) to extract: back plate edge coordinates, card slot center line, and local convex / deformation positions.

[0156] Calculate the actual deviations ΔX, ΔY, and Δθ (lateral, longitudinal, and angle) and the target coordinates, and generate compensation values ​​that are directly sent to the longitudinal positioning servo and the lateral cylinder.

[0157] Adaptive pressing trajectory generation: Based on the visually detected slot depth and local obstacles (such as outward protrusions and resistance areas), the trajectory generation module generates segmented pressing paths: the start and end positions of each segment, the roller feed pressure setting, and the pushing speed.

[0158] The path generation uses constrained optimization (e.g., minimizing the quadratic objective of maximum pressure and pressing time), and the initial parameters are sourced from the model library and can be adjusted online.

[0159] Control and safety shutdown: The pressure roller reads the force sensor in real time during the movement of the pressure roller, and the control (PID or active disturbance rejection control ADT) ensures that the roller pressing force does not exceed the maximum set Fmax and is not lower than the minimum effective force Fmin.

[0160] If a force abnormally changes (exceeds the threshold or the trend is repetitive), a local retraction of 5–20 mm is triggered and the process is retried. If the retry exceeds N times (e.g., 2 times), an alarm is triggered and the workstation is kept in place for manual intervention.

[0161] The model library with automatic model switching includes the initial horizontal / vertical positioning values, edge pressing segment lengths, and initial roller force values ​​for each model. The host computer can switch models with a single click.

[0162] The learning module records the force curve and success / failure labels for each press-fitting operation, and uses simple linear regression or tree models to fine-tune the parameters (such as adjusting the initial roller force by ±5–10%) to achieve adaptive performance that becomes more accurate with use.

[0163] If the vision module is blocked or the lighting is abnormal, the system switches to the backup sensor (force sensor dominant) and performs pressing according to a conservative strategy (reducing speed and adding pause points).

[0164] Key actions (such as suction cup detachment and longitudinal movement into position) are subject to dual confirmation (vision + encoder / limit) to prevent erroneous actions.

[0165] In summary, the refrigerator back panel pressing device provided by the present invention effectively solves the technical problems of low efficiency, high labor intensity, and difficulty in aligning the back panel with the slot due to the looseness of the refrigerator cabinet in the prior art by using a coordinated operation mode of positioning, lifting, and pressing.

[0166] By combining the horizontal and vertical positioning components, the originally loose refrigerator cabinet is forcibly straightened and fixed into a solid state, providing a stable benchmark for high-precision press-fitting.

[0167] The process of pressing one side and lifting the other side: The lifting component is used to lift one side of the back panel, and the pressing component is used to roll the other side, creating the best assembly guide angle, reducing the resistance of the back panel entering the slot, and avoiding damage or arching deformation of the back panel.

[0168] Combining a servo-driven lifting mechanism and a longitudinal positioning mechanism, as well as an optional three-dimensional vision adaptive control module, this device can automatically adapt to different models and sizes of refrigerator cabinets, achieving one-click model changeover and improving production efficiency and equipment utilization.

[0169] The working principle of the refrigerator back panel pressing device of the present invention is as follows:

[0170] Feeding and initial positioning stage: The refrigerator cabinet is transported into the pressing station by the conveyor line. When the photoelectric sensor detects the arrival signal, the blocking mechanism is activated to stop the cabinet from moving forward, completing the longitudinal coarse positioning.

[0171] Positioning and Cabinet Fixing Stage: The control module issues a command to extend the lateral positioning cylinders on both sides. The lateral push plate moves the lateral push pads to clamp the sides of the cabinet, eliminating lateral positional deviations. Next, the longitudinal movement servo drives the longitudinal movement screw to rotate, moving the longitudinal movement bracket (and its pressing components) along the inner side of the frame until the longitudinal push pads press against the end face of the cabinet. At this point, the refrigerator cabinet is completely positioned in both length and width dimensions, changing from a loose state to a rigid, fixed, ready-to-operate state.

[0172] Lifting and Insertion Stage: The lifting mechanism (lifting servo) first adjusts the overall height to a position suitable for the current model. Then, the lifting assembly activates, with the lifting cylinder driving the suction cup to descend and adhere to the refrigerator back panel surface. After vacuum is established, the cylinder retracts (rises), lifting one edge of the back panel upwards, creating an angle between the back panel and the cabinet slot plane. This action causes the unlifted edge of the back panel to naturally face downwards and align with the entrance of the cabinet slot.

[0173] Roll forming assembly stage: While maintaining the lifting state, the pressing assembly begins operation. The pressing telescopic cylinder extends, causing the pressing roller to press down and contact the side of the back plate to be pressed. Subsequently, the pressing reciprocating cylinder (or following the movement of the longitudinal moving bracket) drives the roller to roll along the groove direction. The pressure of the roller forces the edge of the back plate to smoothly slide into the groove. When the roller has traveled to the predetermined stroke, the system determines that the back plate has been mostly inserted into the groove and its posture is stable. At this time, the lifting assembly breaks the vacuum to release the back plate, and the pressing assembly continues to complete the remaining pressing stroke.

[0174] Reset and Cyclic Phase: After pressing is completed, each cylinder and servo motor is reset, the positioning components are released, the blocking mechanism is released, the conveyor line transports the assembled refrigerator out, and at the same time prepares for the entry of the next refrigerator.

[0175] During this process, if an adaptive control module is provided, the 3D vision module will monitor the relative position of the back plate and the slot in real time, and fine-tune the motion trajectory of the servo motor and the pressure of the cylinder through real-time feedback control module to ensure that a perfect pressing effect can be achieved even when there are small tolerances in the material.

[0176] Other structures of the refrigerator back panel pressing device described in this invention are available in the prior art.

[0177] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A refrigerator back panel pressing device, comprising a frame for supporting the refrigerator cabinet, the frame including a top support and side supports, characterized in that, Also includes: A lifting mechanism, mounted on the top support, includes a lifting top plate and a lifting movable frame. The lifting movable frame is positioned below the lifting top plate, and the lifting top plate drives the lifting movable frame to move vertically. A conveying assembly, located within the frame, includes a conveyor line and a blocking mechanism. The blocking mechanism is located at the front end of the conveyor line and is used for initial positioning of the refrigerator cabinet conveyed to the pressing position. A positioning assembly includes several horizontal positioning components and several vertical positioning components. The horizontal positioning components are arranged opposite each other on the side support. The positioning components are disposed on opposite sides of the conveyor line. The longitudinal positioning component includes a longitudinal moving bracket disposed at the bottom of the lifting moving frame. The longitudinal moving bracket can move along the internal direction of the frame for longitudinal positioning of the refrigerator cabinet. The longitudinal positioning component also includes a longitudinal fixed bracket, a longitudinal moving screw, and a longitudinal moving servo. The longitudinal fixed bracket is disposed on both sides of the bottom of the lifting moving frame. The longitudinal moving screw is driven by the longitudinal moving servo and extends in the longitudinal direction. The longitudinal moving bracket is threadedly connected to the longitudinal moving screw and moves along the internal direction of the frame. A longitudinal push beam and a longitudinal moving crossbeam are mounted on the longitudinal moving bracket. The longitudinal push pad moves accordingly and presses against the front and rear sides of the refrigerator cabinet; multiple pressing components are connected to the longitudinal moving bracket and can reciprocate along the long axis of the longitudinal moving bracket. Each pressing component is used to press the refrigerator back panel into the slot of the refrigerator cabinet. The longitudinal moving bracket is a strip structure with a sliding mating surface along its longitudinal direction. The sliding mating surface is used to install multiple pressing components and guide the reciprocating movement of the multiple pressing components; the pressing component includes a pressing reciprocating cylinder, a pressing telescopic cylinder, and a pressing roller; the pressing reciprocating cylinder is installed on the longitudinal moving bracket and engages with the sliding mating surface, and the pressing telescopic cylinder... The cylinder is connected to the output end of the pressing reciprocating cylinder, and the pressing roller is connected to the output end of the pressing telescopic cylinder. The output end of the pressing reciprocating cylinder is positioned towards the length direction of the refrigerator back panel, and is used to drive the pressing telescopic cylinder and the pressing roller to reciprocate along the long axis of the longitudinal moving bracket. The output end of the pressing telescopic cylinder is positioned towards the refrigerator cabinet, and is used to drive the pressing roller to move closer to or away from the refrigerator back panel in the vertical direction. The pressing assembly is installed on the longitudinal moving bracket, realizing the longitudinal positioning of the refrigerator cabinet, and also driving the pressing assembly to move to the pressing starting position suitable for the current refrigerator specifications, thereby realizing automatic adjustment and convenient changeover of the equipment.A lifting assembly is located at the bottom of the lifting and moving frame. This assembly is used to adhere to the refrigerator back panel and lift one side of the back panel before pressing. The lifting assembly includes a lifting cylinder, a suction cup mounting plate, multiple flexible joints, and suction cups positioned below the flexible joints. The lifting cylinder's extension and retraction direction faces the conveyor line, driving the suction cup mounting plate and suction cups to move vertically.

2. The refrigerator back panel pressing device according to claim 1, characterized in that: The lateral positioning assembly includes a lateral positioning cylinder, a lateral push plate, and a lateral push pad. The lateral positioning cylinder is installed on the side bracket, and the lateral push plate moves toward the conveyor line to perform lateral positioning of the refrigerator cabinet.

3. The refrigerator back panel pressing device according to claim 1, characterized in that: The lifting mechanism includes a lifting servo, a lifting reducer, and a lifting screw. The lifting reducer is connected to the output shaft of the lifting servo, and the lifting screw is connected to the output end of the lifting reducer. The lifting screw is arranged along the vertical direction of the frame, and the screw nut of the lifting screw is fixedly connected to the lifting top plate, so that the lifting servo drives the lifting top plate and the lifting moving frame below it to move up and down in the vertical direction.

4. The refrigerator back panel pressing device according to claim 1, characterized in that, Also includes: The control module is connected to the lifting mechanism, conveying component, lateral positioning component, longitudinal positioning component, suction lifting component and multiple pressing components, and is used to control the action of each component.

5. The refrigerator back panel pressing device according to claim 4, characterized in that: The pressing steps are performed according to the control module as follows: the refrigerator cabinet is conveyed to the blocking mechanism via the conveyor line; the control module drives the horizontal positioning component to position the refrigerator cabinet horizontally; the vertical movement servo drives the vertical movement bracket to move inward to the inside of the frame to position the refrigerator cabinet vertically; the lifting component is controlled to adsorb the back panel and lift one side of it; multiple pressing components installed on the vertical movement bracket are controlled to reciprocate in the vertical direction; and the pressing rollers press the back panel into the slot of the refrigerator cabinet.

6. The refrigerator back panel pressing device according to claim 5, characterized in that: When the refrigerator back panel is pressed into the middle of the slot, the suction lifting assembly is controlled to disengage from the back panel.

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