Door body closing height automatic detection system

Abstract

A door body closing height automatic detection system disclosed by the present invention comprises a bearing frame and a detection frame, the bearing frame comprises a lower protection plate and an upper protection plate, the lower protection plate is hinged to one side of the upper protection plate, the other side of the lower protection plate is connected with the other side of the upper protection plate through a locking assembly, and a clamping space for clamping a foaming mold is formed between the lower protection plate and the upper protection plate; the detection frame is provided with a first cross arm and a second cross arm which are suspended above the upper guard plate, the first cross arm is provided with a plurality of first sensors, and the second cross arm is provided with a second sensor and a third sensor which are matched to form a group. According to the invention, the plurality of sensors are arranged, the first sensor can irradiate the first detection area to detect the deformation of the middle part of the foaming mold, and the second sensor and the third sensor respectively irradiate the second detection area and the third detection area to detect the deformation of the corners of the foaming mold and the change of the height difference; therefore, follow-up researchers can conveniently adjust and improve the foaming mold.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to an automatic detection system for the closing height of a door. Background Art

[0002] A refrigerator door consists of three parts: the door assembly, the door lining, and the foam. The door needs to be filled with foam to provide insulation, a process known as foaming. The door foaming mold consists of an upper and lower mold. During foaming, the upper and lower molds are secured by a clamp. However, foaming causes the mold to expand, and the clamp's closing height indirectly affects the door foam thickness. To understand how the foaming process affects the door's closing height, a detection system is used to measure the door's closing height.

[0003] Patent document CN218646281U, published on March 17, 2023, discloses a tool for measuring the closed height of a refrigerator door foaming clamp, comprising a base; a resistance device comprising a contact and a sliding rod, the sliding rod being vertically arranged and slidably mounted on the base; the upper end of the sliding rod being above the base; the contact being arranged at the upper end of the sliding rod; a reset device configured to cause the sliding rod to move upward; a measuring device configured to detect the amount of downward movement of the contact and obtain a height value based on the movement; and a display device arranged on the base and electrically connected to the measuring device to display the height value. This measuring tool measures values accurately, has a quick measurement process, and is easy to read. It can accurately and quickly obtain the closed height of the refrigerator door foaming clamp, thereby improving the production efficiency of the refrigerator door foaming process.

[0004] However, during the actual foaming process, the expansion of the foaming mold manifests differently in different areas of the foaming mold, such as bulges in the middle and bending at the corners. The existing technology is unable to separately detect the above types of deformation of the foaming mold. Therefore, an automatic door closing height detection system is urgently needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a door closing height automatic detection system to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A door closing height automatic detection system includes a supporting frame and a detection frame, the supporting frame includes a lower guard plate and an upper guard plate, the lower guard plate and the upper guard plate are hinged on one side, and are connected by a locking assembly on the other side, and a clamping space for clamping a foaming mold is formed between the lower guard plate and the upper guard plate; the detection frame is provided with a first cross arm and a second cross arm suspended above the upper guard plate, a plurality of first sensors are provided on the first cross arm, and a first detection area matching the first sensor is provided on the top surface of the upper guard plate; a second sensor and a third sensor are provided in a group on the second cross arm, a second detection area matching the second sensor is provided at the top surface corner of the upper guard plate, and a third detection area matching the third sensor is provided at the top surface corner of the lower guard plate in the same direction.

[0008] Preferably, the first sensor, the second sensor and the third sensor are laser displacement sensors.

[0009] Preferably, the locking assembly includes a plurality of swing arms hinged on one side of the upper guard plate, a hook body is provided at the lower end of the swing arm, and a lock buckle that matches the hook body is rotatably provided on the lower guard plate.

[0010] Preferably, the plurality of swing arms are connected via a connecting plate, a support member is provided on the connecting plate, and a support platform matching the support member is fixedly provided on the lower guard plate.

[0011] Preferably, a support plate is provided above the lower guard plate for lifting movement, an expansion and contraction bag is provided between the lower guard plate and the support plate, and an interactive tube connecting the expansion and contraction bag is provided on the side wall of the lower guard plate.

[0012] Preferably, a pressure detection component is provided on the interactive tube, and the rotation of the lock is linked to the pressure detection component. When the pressure detection component detects that the pressure starts to rise from the lowest position, the lock rotates to hook the hook body. When the pressure detection component detects that the pressure drops to the lowest position, the lock reverses to disengage from the hook body.

[0013] Preferably, the pressure detection component includes a pressure platform arranged on the interaction tube, a pressure chamber connected to the interaction tube is arranged in the pressure platform, a pressure rod is elastically provided in the pressure chamber for lifting and lowering, the lock is rotatably arranged on the upper end of the pressure platform, and the pressure rod is connected to the lock through a spiral transmission assembly.

[0014] Preferably, the lower end of the pressure rod is spirally connected to a pressure head, the outer wall of the pressure head slides in contact with the inner wall of the pressure chamber, the pressure rod is rotatable, and a rotary block is sleeved on the outer side for synchronous rotation, the outer wall of the rotary block is connected to the inside of the pressure platform through a torque piece, and a pressure gauge is provided on the outer wall of the pressure platform, and the rotation of the torque piece is linked to the pointer of the pressure gauge.

[0015] Preferably, the spiral transmission assembly includes a support rod arranged at the upper end of the pressure platform, an undulating member is arranged in the support rod for lifting and lowering movement, the upper end of the pressure rod is rotatably connected to the undulating member, a lifting column is fixedly arranged on the undulating member, a first spiral wire is arranged on the outer wall of the lifting column, a first cavity matching the lifting column is arranged at the center of the rotating shaft of the lock buckle, and a first spiral groove slidingly connected to the first spiral wire is arranged in the first cavity.

[0016] Preferably, the axis of the pressure head is provided with a second cavity matching the pressure rod, the outer wall of the lower end of the pressure rod is provided with a second spiral wire, and the inner wall of the second cavity is provided with a second spiral groove matching the second spiral wire.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The automatic detection system for the door closing height is equipped with multiple sensors. Under the positioning of the supporting frame and the detection frame, and the clamping and fixation of the foaming mold by the lower and upper guard plates of the supporting frame, the system can smoothly detect the deformation of the middle part of the foaming mold by illuminating the first detection area with the first sensor, and detect the deformation and height difference changes at the corners of the foaming mold by illuminating the second and third detection areas with the second and third sensors respectively. In this way, relevant data on the door closing height can be comprehensively obtained, which is convenient for subsequent researchers to adjust and improve the foaming mold.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 A schematic diagram of the front structure provided by an embodiment of the present invention;

[0025] Figure 4 A schematic side view of the structure provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a top view of the structure provided by an embodiment of the present invention;

[0027] Figure 6 A schematic structural diagram of a lower guard plate and an upper guard plate provided in an embodiment of the present invention;

[0028] Figure 7 A schematic side cross-sectional view of the lower guard plate and the upper guard plate provided in an embodiment of the present invention;

[0029] Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0030] Description of reference numerals:

[0031] 1. Carrying frame; 2. Detection frame; 3. Lower guard plate; 4. Upper guard plate; 5. First cross arm; 6. Second cross arm; 7. First sensor; 8. Second sensor; 9. Third sensor; 10. Swing arm; 11. Hook; 12. Lock; 13. Connecting plate; 14. Support member; 15. Support platform; 16. Support plate; 17. Expansion bag; 18. Interchange tube; 19. Pressure platform; 20. Pressure chamber; 21. Pressure rod; 22. Pressure head; 23. Rotary block; 24. Torque member; 25. Pressure gauge; 26. Support rod; 27. Up and down member; 28. Lifting column; 29. First cavity; 30. First spiral wire; 31. First spiral groove; 32. Second cavity; 33. Second spiral wire; 34. Second spiral groove. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] See also Figure 1-8An embodiment of the present invention provides an automatic detection system for the closing height of a door body, including a supporting frame 1 and a detection frame 2. The supporting frame 1 includes a lower guard plate 3 and an upper guard plate 4. The lower guard plate 3 is hinged to the upper guard plate 4 on one side and is connected by a locking assembly on the other side. A clamping space for clamping the foaming mold is formed between the lower guard plate 3 and the upper guard plate 4; the detection frame 2 is provided with a first cross arm 5 and a second cross arm 6 suspended above the upper guard plate 4, a plurality of first sensors 7 are provided on the first cross arm 5, and a first detection area matching the first sensor 7 is provided on the top surface of the upper guard plate 4; a second sensor 8 and a third sensor 9 are provided in a group on the second cross arm 6, a second detection area matching the second sensor 8 is provided at the top corner of the upper guard plate 4, and a third detection area matching the third sensor 9 is provided at the top corner of the lower guard plate 3 in the same direction.

[0034] Specifically, the carrier 1 is used to horizontally support the foaming mold, and the lower guard plate 3 and the upper guard plate 4 are parallel and locked by a locking assembly to form a clamping space to clamp the foaming mold; the bottom of the carrier 1 is provided with legs, and a roller group can be provided for easy movement. The detection frame 2 can be set at a fixed point, and the height of each cross arm it supports is higher than the overall height of the carrier 1. Specifically, after the upper guard plate 4 is parallel and covers the lower guard plate 3 and is locked, the height of the carrier 1 is sufficient to move to the bottom of each cross arm; there are preferably two first cross arms 5, which are symmetrically arranged on both sides of the second cross arm 6; there are preferably two first sensors 7 on the same first cross arm 5; the combination of the second sensor 8 and the third sensor 9 is preferably two groups, corresponding to the two corners on the same side of the carrier 1; the first cross arm 5 and the second cross arm 6 on one side can form a group of detection areas, and the detection areas on both sides respectively detect the deformation data during the foaming process and the deformation data after foaming. The switching of the use of the two detection areas is achieved by moving the carrier 1. Preferably, four first detection areas are set in a rectangular array on the upper surface of the upper guard plate 4; the second detection area is set at the four corners of the upper surface of the upper guard plate 4; and the third detection area is set at the four corners of the upper surface of the lower guard plate 3. In actual use, this technical solution, by setting multiple sensors, under the positioning of the support frame 1 and the detection frame 2, and the clamping and fixing of the foaming mold by the lower guard plate 3 and the upper guard plate 4 of the support frame 1, can smoothly detect the deformation of the middle part of the foaming mold by irradiating the first detection area through the first sensor 7, and detect the deformation of the corners of the foaming mold and the change in height difference by irradiating the second detection area and the third detection area respectively through the second sensor 8 and the third sensor 9, thereby comprehensively obtaining relevant data on the closing height of the door body, which is convenient for subsequent researchers to adjust and improve the foaming mold.

[0035] Compared with the prior art, an automatic detection system for the closing height of a door body proposed in an embodiment of the present invention sets up multiple sensors. Under the positioning of the supporting frame 1 and the detection frame 2 and the clamping and fixing of the foaming mold by the lower guard plate 3 and the upper guard plate 4 of the supporting frame 1, the first sensor 7 can be used to illuminate the first detection area to detect the deformation of the middle part of the foaming mold, and the second sensor 8 and the third sensor 9 can be used to illuminate the second detection area and the third detection area respectively to detect the deformation and height difference changes at the corners of the foaming mold, thereby comprehensively obtaining relevant data on the closing height of the door body, which is convenient for subsequent researchers to adjust and improve the foaming mold.

[0036] As the preferred technical solution of this embodiment, the first sensor 7, the second sensor 8 and the third sensor 9 are laser displacement sensors. Specifically, the detection light beams of the first sensor 7 and the second sensor 8 can be emitted straight downward and correspond to the first detection area or the second detection area; the detection light beam of the third sensor 9 is emitted at an angle to avoid the upper guard plate 4 and illuminate the third detection area; each sensor detects and obtains data in the vertical direction.

[0037] As the preferred technical solution of this embodiment, the locking assembly includes a plurality of swing arms 10 hinged on one side of the upper guard plate 4, a hook body 11 is provided at the lower end of the swing arm 10, and a lock buckle 12 matching the hook body 11 is rotatably provided on the lower guard plate 3. Specifically, the axial direction of the rotating shaft of the swing arm 10 is parallel to the axial direction of the hinge axis between the lower guard plate 3 and the upper guard plate 4; the swing arm 10 is arranged on the opposite side of the hinge axis of the lower guard plate 3 and the upper guard plate 4; after the lower guard plate 3 covers the upper side of the upper guard plate 4 in parallel, the swing arm 10 hangs down freely so that the lower end hook body 11 corresponds horizontally to the lock buckle 12; the lock buckle 12 is hooked with the hook body 11 by rotating toward one side of the hook body 11, and the hook shape of the hook body 11 is bent upward toward the inside of the clamping space, and a rounded corner is provided on the inner side of the end of the hook body 11 to avoid interference with the rotation of the lock buckle 12 and to ensure that the hooking gap between the hook body 11 and the lock buckle 12 is small enough.

[0038] As the preferred technical solution of this embodiment, multiple swing arms 10 are connected by a connecting plate 13, a support member 14 is provided on the connecting plate 13, and a support platform 15 matching the support member 14 is fixedly provided on the lower guard plate 3. Specifically, the setting of the connecting plate 13 enables each swing arm 10 to move synchronously; the support member 14 is covered above the lower guard plate 3 by the upper guard plate 4 and the swing arm 10 is free to hang down, and the support member 14 can correspond to the support platform 15, and when the support member 14 is supported on the support platform 15, its support height for the upper guard plate 4 does not exceed the parallel height of the upper guard plate 4 and the lower guard plate 3.

[0039] In another embodiment proposed by the present invention, a support plate 16 is provided above the lower guard plate 3 for lifting and lowering, an expansion bag 17 is provided between the lower guard plate 3 and the support plate 16, and an interactive tube 18 connected to the expansion bag 17 is provided on the side wall of the lower guard plate 3. Specifically, the lower guard plate 3 is connected to the support plate 16 through a plurality of symmetrically arranged telescopic columns, which have a minimum support height for the support plate 16 and meet the arrangement of the minimum volume of the expansion bag 17; the expansion bag 17 can be filled with water for expansion; the expansion bag 17 is flat; after the foaming mold is loaded into the clamping space, the expansion bag 17 is used to fill with water to pressurize the foaming mold from below, thereby applying pre-tightening force to the mold.

[0040] As a preferred technical solution of this embodiment, a pressure detection component is provided on the interactive tube 18, and the rotation of the lock buckle 12 is linked to the pressure detection component. When the pressure detection component detects that the pressure starts to rise from the lowest position, the lock buckle 12 rotates to hook the hook body 11. When the pressure detection component detects that the pressure drops to the lowest position, the lock buckle 12 reverses to disengage from the hook body 11. Specifically, after the foaming mold is loaded into the clamping space, when the support plate 16 applies a pre-tightening force to the foaming mold, that is, water is filled into the expansion bag 17 through the interactive tube 18, the expansion bag 17 expands to apply pressure to the foaming mold, and at the same time, the internal water pressure increases, thereby triggering the pressure detection component. When the pressure rises from the lowest position, the linkage lock buckle 12 rotates toward the hook body 11 to hook the hook body 11, thereby achieving automatic connection between the hook body 11 and the lock buckle 12; then foaming molding is carried out in the foaming mold, and the mold is gradually expanded, and the mold is supported by contact The lower guard plate 3 and the upper guard plate 4, the hook body 11 and the lock buckle 12 are tightly hooked. Until the foaming is finalized, the hook body 11 and the lock buckle 12 are still tightly hooked. At this time, it is difficult to unlock the hook body 11 and the lock buckle 12, and there is a risk of the hook body 11 popping out suddenly; however, under the action of the pressure detection component, to unlock the hook body 11 and the lock buckle 12, the water of the expansion bag 17 can be directly released slowly through the interactive pipe 18 to reduce the internal pressure of the expansion bag 17, thereby triggering the pressure detection component to detect the pressure gradually decreasing until the pressure drops to the lowest level. The support plate 16 drops to a certain height to cancel the pre-tightening force and also relieve the expansion of the foaming mold, thereby relaxing the hook body 11 and the lock buckle 12. Then the pressure detection component triggers the lock buckle 12 to reverse and disengage from the hook body 11, that is, the automatic disengagement of the hook body 11 and the lock buckle 12 is achieved, and the risk of the hook body 11 popping out suddenly by accident can also be avoided.

[0041] As a preferred technical solution of this embodiment, the pressure detection component includes a pressure platform 19 arranged on the interactive tube 18, a pressure chamber 20 connected to the interactive tube 18 is provided in the pressure platform 19, and a pressure rod 21 is elastically provided in the pressure chamber 20 for lifting and lowering. The lock buckle 12 is rotatably provided at the upper end of the pressure platform 19, and the pressure rod 21 is connected to the lock buckle 12 through a spiral transmission component. Specifically, the interactive tube 18 is provided on the side close to the locking assembly on the lower guard plate 3, and is correspondingly provided at the middle position of the side of the lower guard plate 3; the pressure platform 19 is vertically provided above the interactive tube 18; the pressure chamber 20 is connected to the interactive tube 18 to form a three-way shape; a shoulder is provided on the top surface of the pressure chamber 20, and a pressure rod 21 is provided at The ring body moves in the pressure chamber 20, and a spring is provided on the inner side of the shoulder. The upper and lower ends of the spring respectively abut against the top surface of the pressure chamber 20 and the ring body, so that the lower end of the pressure rod 21 remains close to the inner side of the interaction tube 18 when no external force is applied, and when the lower end of the pressure rod 21 is pushed by an external force, the maximum height to which the pressure rod 21 rises causes the ring body to abut against the shoulder; the lower end of the pressure rod 21 is used to withstand water pressure; the lifting and lowering of the pressure rod 21 drives the lock buckle 12 to rotate through the spiral transmission assembly; the rotation range of the lock buckle 12 is 90°, that is, at both ends of the rotation range of the lock buckle 12, one end makes its free end parallel to the side of the clamping space to completely avoid the hook body 11, and the other side makes its free end point to and close to the hook body 11 to form a hook connection.

[0042] The cam 23 is connected to the pressure plate 19 by a screw 24 and the cam 25 is connected to the pressure plate 19 by a screw 24. The cam 23 is connected to the pressure plate 19 by a screw 24. The cam 23 is connected to the pressure plate 19 by a screw 24. The cam 23 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The cam 25 is connected to the pressure plate 19 by a screw 24. The axis is provided with a second cavity 32 matching the pressure rod 21, the outer wall of the lower end of the pressure rod 21 is provided with a second spiral wire 33, and the inner wall of the second cavity 32 is provided with a second spiral groove 34 matching the second spiral wire 33; under the influence of the continuously rising water pressure, the pressure rod 21 rises to the highest position of the lifting stroke, and then, the pressure-bearing head 22 continues to withstand the effect of the rising water pressure, and begins to rise relative to the pressure rod 21 and triggers the spiral transmission, thereby causing the pressure rod 21 to rotate against the elastic force of the torsion member 24; the pointer transmission of the rotary block 23 and the pressure gauge 25 is specifically as follows: the rotary block 23 is coaxially connected to the first bevel gear, and the pointer shaft of the pressure gauge 25 is coaxially connected to the second bevel gear meshing with the first bevel gear. Thus, the rotation of the pressure rod 21 can be proportionally fed back to the rotation of the pointer of the pressure gauge 25. Furthermore, a dial corresponding to the transmission ratio needs to be installed in the pressure gauge 25 to accurately limit the detected real-time water pressure.

[0043] As the preferred technical solution of this embodiment, the spiral transmission assembly includes a support rod 26 arranged at the upper end of the pressure platform 19, and an undulating member 27 is arranged in the support rod 26 for lifting and lowering movement. The upper end of the pressure rod 21 is rotatably connected to the undulating member 27, and a lifting column 28 is fixedly arranged on the undulating member 27. The outer wall of the lifting column 28 is provided with a first spiral wire 30, and the center of the rotating shaft of the lock buckle 12 is provided with a first cavity 29 matching the lifting column 28, and the first spiral groove 31 slidably connected to the first spiral wire 30 is provided in the first cavity 29. Specifically, the support rod 26 is arranged horizontally, and both ends extend to correspond to each hook body 11. The lock buckles 12 corresponding to the hook body 11 are correspondingly arranged on the support rod 26; the undulating member 27 only moves up and down inside the support rod 26, and the upper end of the pressure rod 21 is rotatably connected to the undulating member 27, so that the two are lifted and lowered synchronously without affecting the rotation of the pressure rod 21; the lifting column 28 is arranged vertically and coaxial with the rotating shaft of the lock buckle 12. In actual use of this technical solution, when the interactive tube 18 starts to fill water into the expansion and contraction bag 17, the water pressure gradually increases, and the pressure-bearing head 22 is pushed, first driving the pressure rod 21 to rise synchronously, and the pressure rod 21 drives the lifting column 28 to rise synchronously through the undulating member 27, and the lifting column 28 triggers the spiral transmission with the lock buckle 12 through the first spiral wire 30 and the first spiral groove 31, so that the lock buckle 12 can rotate toward the hook body 11 to form a connection with the hook body 11. This occurs when the water pressure starts to rise, that is, when the pre-tightening force is applied to the foaming mold. During this process, the hook body 11 will not be separated from the position corresponding to the lock buckle 12, and the hook body 11 and the lock buckle 12 can be smoothly hooked, and finally the pressure rod 21 rises to the highest position of the lifting stroke; thereafter, during the foaming process, the expansion and contraction bag 17 Due to the reaction force generated by the clamping space, the water pressure therein continues to rise, and the pressure-bearing head 22 continues to rise, triggering the spiral transmission with the pressure rod 21 through the second spiral wire 33 and the second spiral groove 34, so that the pressure rod 21 starts to rotate, and drives the rotary block 23 to resist the elastic force of the torsion piece 24, and the rotary block 23 can be linked to the pointer of the pressure gauge 25 to rotate to display the real-time water pressure; finally, when the interactive pipe 18 is draining, the water pressure gradually decreases, and the torsion piece 24 forces the pressure rod 21 to rotate, thereby linking the pressure-bearing head 22 to descend, then, the pressure on the pressure-bearing head 22 continues to decrease, the pressure rod 21 elastically recovers and moves downward, driving the undulating member 27 and the lifting column 28 to descend, and the lifting column 28 then spirally links the lock buckle 12, causing the lock buckle 12 to rotate to disengage from the hook body 11.

[0044] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A door closing height automatic detection system, comprising a carrier frame (1) and a detection frame (2), characterized in that: The carrier frame (1) comprises a lower guard plate (3) and an upper guard plate (4); the lower guard plate (3) and the upper guard plate (4) are hinged on one side and connected on the other side via a locking assembly; a clamping space for clamping the foaming mold is formed between the lower guard plate (3) and the upper guard plate (4); The detection frame (2) is provided with a first transverse arm (5) and a second transverse arm (6) suspended above the upper guard plate (4); a plurality of first sensors (7) are provided on the first transverse arm (5); a first detection area matching the first sensor (7) is provided on the top surface of the upper guard plate (4); a second sensor (8) and a third sensor (9) are provided on the second transverse arm (6); a second detection area matching the second sensor (8) is provided at a corner of the top surface of the upper guard plate (4); and a third detection area matching the third sensor (9) is provided at a corner of the top surface of the lower guard plate (3) in the same direction.

2. The door closing height automatic detection system according to claim 1 is characterized in that: The first sensor (7), the second sensor (8) and the third sensor (9) are laser displacement sensors.

3. The door closing height automatic detection system according to claim 1, characterized in that: The locking assembly comprises a plurality of swing arms (10) hinged to one side of the upper guard plate (4), a hook body (11) being provided at the lower end of the swing arm (10), and a lock buckle (12) matching the hook body (11) being rotatably provided on the lower guard plate (3).

4. The door closing height automatic detection system according to claim 3 is characterized in that: The plurality of swing arms (10) are connected via a connecting plate (13), a support member (14) is provided on the connecting plate (13), and a support platform (15) matching the support member (14) is fixedly provided on the lower guard plate (3).

5. The door closing height automatic detection system according to claim 3 is characterized in that: A support plate (16) is provided above the lower guard plate (3) for lifting movement, an expansion bag (17) is provided between the lower guard plate (3) and the support plate (16), and an interactive pipe (18) communicating with the expansion bag (17) is provided on the side wall of the lower guard plate (3).

6. The door closing height automatic detection system according to claim 5, characterized in that: The interactive tube (18) is provided with a pressure detection component, and the rotation of the lock (12) is linked to the pressure detection component. When the pressure detection component detects that the pressure starts to rise from the lowest position, the lock (12) rotates to hook the hook body (11). When the pressure detection component detects that the pressure drops to the lowest position, the lock (12) reverses to disengage from the hook body (11).

7. The door closing height automatic detection system according to claim 6, characterized in that: The pressure detection assembly includes a pressure platform (19) arranged on the interactive tube (18), a pressure chamber (20) connected to the interactive tube (18) is arranged in the pressure platform (19), a pressure rod (21) is elastically movable in the pressure chamber (20), the lock (12) is rotatably arranged on the upper end of the pressure platform (19), and the pressure rod (21) is connected to the lock (12) through a spiral transmission assembly.

8. The door closing height automatic detection system according to claim 7, characterized in that: The lower end of the pressure rod (21) is spirally connected to a pressure head (22), and the outer wall of the pressure head (22) is fitted and slid with the inner wall of the pressure chamber (20). The pressure rod (21) is rotatable, and a rotary block (23) is sleeved on the outer side for synchronous rotation. The outer wall of the rotary block (23) is connected to the inside of the pressure platform (19) through a torsion piece (24). A pressure gauge (25) is provided on the outer wall of the pressure platform (19), and the rotation of the torsion piece (24) is linked to the pointer of the pressure gauge (25).

9. The door closing height automatic detection system according to claim 7, characterized in that: The spiral transmission assembly includes a support rod (26) provided at the upper end of a pressure platform (19), an undulating member (27) is provided in the support rod (26) for lifting and lowering movement, the upper end of the pressure rod (21) is rotatably connected to the undulating member (27), a lifting column (28) is fixedly provided on the undulating member (27), a first spiral wire (30) is provided on the outer wall of the lifting column (28), a first cavity (29) matching the lifting column (28) is provided at the center of the rotating shaft of the lock buckle (12), and a first spiral groove (31) slidably connected to the first spiral wire (30) is provided in the first cavity (29).

10. The door closing height automatic detection system according to claim 8, characterized in that: The axis of the pressure head (22) is provided with a second cavity (32) matching the pressure rod (21), the outer wall of the lower end of the pressure rod (21) is provided with a second spiral wire (33), and the inner wall of the second cavity (32) is provided with a second spiral groove (34) matching the second spiral wire (33).

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