Special functional hot melt film and online quality detection equipment thereof

Abstract

The invention provides a special functional hot melt film and online quality detection equipment thereof, and belongs to the field of hot melt films. Comprising a hot melt adhesive matrix, phase change microcapsules and a phase change material, the phase change microcapsules are uniformly dispersed in the hot melt adhesive matrix, the phase change material is wrapped in the phase change microcapsules, and the phase change material is octadecane. According to the invention, the nanoscale phase-change microcapsules are uniformly dispersed in the hot melt adhesive matrix, and the solid-liquid phase change of the octadecane phase-change material at 30-60 DEG C is utilized to realize efficient buffering of the environment temperature. The specific surface area of the phase-change material is remarkably increased due to the nanoscale size, so that the phase-change material can quickly exchange heat with the outside, and compared with a traditional macroscopic phase-change material, the temperature response speed is increased, the environment temperature fluctuation range can be effectively reduced, and the strict requirements of scenes such as heat dissipation of electronic equipment on temperature stability are effectively met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot melt film, in particular to a special functional hot melt film and an online quality detection equipment thereof. BACKGROUND

[0002] The hot melt film is a functional film with thermoplastic polymer material as the main component, which is usually made of polymer, tackifying resin, antioxidant and other additives by melt extrusion casting process. In current industrial production and daily life, the hot melt film is widely used as an important functional material.

[0003] In the traditional field of hot melt film, its function is mainly limited to basic bonding, and lacks the ability of self-adaptive adjustment to complex environment. In the process of electronic device packaging, with the development of 5G and artificial intelligence technology, the integration and operation speed of chips and other electronic components are greatly improved, and the heat generated during operation increases sharply. The ordinary hot melt film cannot adjust the temperature in time, often leading to performance degradation and shortening of service life of electronic components due to overheating, which is not conducive to the use of hot melt film. Moreover, the existing hot melt film detection equipment has single function, and lacks comprehensive detection equipment capable of detecting the mechanical properties and temperature response characteristics of hot melt film with special function at the same time, which is difficult to guarantee the stability and reliability of product quality, and seriously restricts the development of high-performance hot melt film industry.

[0004] Based on the above reasons, the present application provides a special functional hot melt film and an online quality detection equipment thereof, which can effectively meet the needs of temperature adjustment of hot melt film and realize the needs of online detection of temperature adjustment and reliability of the special functional hot melt film. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a special functional hot melt film and an online quality detection equipment thereof with the advantages of stable adjustment and multifunctional detection.

[0006] To solve the above technical problems, the present application provides the following technical solutions: A special functional hot melt film, comprising a hot melt adhesive matrix, characterized in that phase change microcapsules are uniformly dispersed in the hot melt adhesive matrix, the phase change microcapsules encapsulate phase change materials, and the phase change materials are octadecane.

[0007] Preferably, the particle size of the phase change microcapsules is 50-100 nanometers, and the phase change microcapsules are made of polycaprolactone material.

[0008] Preferably, the phase change temperature of the phase change material is set to 30-60 degrees Celsius.

[0009] The utility model provides an online quality detection equipment of special functional hot melt film, including the top surface of mounting shell is equipped with a plurality of through -hole, and the bottom surface of mounting shell is fixedly connected with fixed pipe, the mounting shell is evenly distributed and is equipped with a plurality of mutually staggered through -groove, the through -groove is movably connected with movable shell, the top surface of each movable shell is fixedly connected with temperature sensor and camera, and control module is installed in movable shell inner chamber, the bottom surface of a plurality of movable shell is fixedly connected with same bottom plate, the bottom plate is fixedly connected with first electric push rod, and first electric push rod is fixedly connected with mounting shell, the upside of mounting shell is provided with movable plate, height adjusting assembly is arranged between mounting shell and movable plate, a plurality of multifunctional quality inspection subassembly are evenly arranged on movable plate, and auxiliary assembly is arranged on the front and back side walls of movable plate.

[0010] Preferably, the height adjusting assembly includes a side plate, the left and right side walls of the mounting shell and the movable plate are fixedly connected with a side plate, the side plate is symmetrically and movably connected with two threaded rods in front and back, the bottom end of the threaded rod penetrates the lower side plate and is threadedly connected with the lower side plate, the top end of the threaded rod is fixedly connected with a belt pulley, the same belt is sleeved between the four belt pulleys, the top end of one of the threaded rods penetrates the belt pulley and is fixedly connected with a motor, the motor is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with the side plate.

[0011] Preferably, the multifunctional quality inspection subassembly includes a vertical shell, a distance measuring device is fixedly connected to the top surface of the vertical shell, and a spring is fixedly connected to the inner chamber of the vertical shell, the other end of the spring is fixedly connected with a vertical plate, the bottom surface of the vertical plate extends out of the vertical shell and is fixedly connected with a horizontal plate, a heating module is fixedly connected to the bottom surface of the horizontal plate, the same section adjacent two vertical shells are fixedly connected with the same top plate at the top surface, a second electric push rod is fixedly connected to the center of the top plate, and the second electric push rod is fixedly connected with the movable plate.

[0012] Preferably, the auxiliary assembly includes a connecting plate, the left and right side walls of the movable plate are fixedly connected with a connecting plate, the connecting plate is arranged in an L shape, and the same side two connecting plates are movably connected with the same circular shaft, and a circular roller is fixedly connected to the circular shaft.

[0013] Preferably, a plurality of support frames are fixedly connected to the side walls of the mounting shell, the support frames are concave and have mounting holes in the bottom surface, and support plates are fixedly connected between adjacent support frames.

[0014] Preferably, a light supplementing lamp is fixedly connected to the top surface of the movable shell, the light supplementing lamp is arranged in a ring array and is a cold light lamp.

[0015] Preferably, a sliding groove is provided on the inner wall of each through groove, and a sliding plate is fixedly connected to the outer wall of the movable shell, and the sliding plate is movably connected to the sliding groove.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: This invention achieves efficient buffering of ambient temperature by uniformly dispersing nanoscale phase change microcapsules in a hot melt adhesive matrix and utilizing the solid-liquid phase change of octadecane phase change material at 30-60℃. Furthermore, the nanoscale size significantly increases the specific surface area of ​​the phase change material, enabling rapid heat exchange with the external environment. Compared to traditional macroscopic phase change materials, this improves the temperature response speed, effectively reduces the range of ambient temperature fluctuations, and effectively meets the stringent temperature stability requirements of scenarios such as heat dissipation in electronic devices. This invention uses two electric push rods to move the top plate, which in turn moves the vertical shell, which in turn moves the vertical plate inside. This ensures that the horizontal plate on the bottom surface of the vertical plate makes full contact with the special functional hot melt film. At this time, by controlling the temperature of the heating module, gradient heating is achieved in the direction of hot melt film conveying. The temperature of the hot melt film is monitored in real time by a temperature sensor, which allows for online detection of the temperature regulation performance of the special functional hot melt film. Furthermore, by pushing the second electric push rod, the horizontal plate is pressed tightly onto the hot melt film. The distance between the horizontal plate and the vertical plate is measured by a distance measuring device, and the pressure on the hot melt film can be calculated by converting the spring compression. The deformation of the hot melt film is captured by a camera, enabling online detection of the compressive strength of the special functional hot melt film. This invention has the advantage of multiple detection functions. This invention drives the motor to rotate four threaded rods that mesh with the threads of the lower side plate, thereby changing the height of the movable plate. This meets the installation requirements of the monitoring equipment on the hot melt film production line. The hot melt film is pushed by the rollers on both sides, and the special functional hot melt film can be stably unfolded under the movable plate, facilitating accurate testing of the special functional hot melt film. Moreover, the rotation of the rollers ensures stable conveying of the special functional hot melt film during production, facilitating online testing. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0018] Figure 1 This is a schematic diagram of the internal structure of the special functional hot melt film of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the quality testing equipment of the present invention; Figure 3is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application; Figure 4 is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application; Figure 5 is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application; Figure 6 is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application; Figure 7 is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application; Figure 8 is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application; Figure 9 is a schematic view of a lateral cross-section structure of the quality detection equipment of the present application.

[0019] Reference signs: 100, hot melt adhesive matrix; 200, phase change microcapsule; 300, phase change material; 1, mounting shell; 2, through hole; 3, fixed tube; 4, through slot; 5, movable shell; 6, temperature sensor; 7, camera; 8, control module; 9, bottom plate; 10, first electric push rod; 11, movable plate; 12, height adjusting assembly; 13, multifunctional quality inspection assembly; 14, side plate; 15, threaded rod; 16, belt pulley; 17, belt; 18, motor; 19, mounting plate; 20, auxiliary assembly; 21, vertical shell; 22, distance measuring device; 23, spring; 24, vertical plate; 25, horizontal plate; 26, heating module; 27, top plate; 28, second electric push rod; 29, connecting plate; 30, circular shaft; 31, circular roller; 32, support frame; 33, mounting hole; 34, support plate; 35, fill light; 36, sliding groove; 37, sliding plate.

[0020] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in this specific structure, device and environment, and those skilled in the art can adjust or modify these devices and environment according to specific needs, and the adjustment or modification still includes in the scope of the appended claims. DETAILED DESCRIPTION

[0021] The special functional hot melt film and the on-line quality detection equipment thereof provided by the present application are described in detail below in combination with the drawings and specific embodiments. It should be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be adopted by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0022] It should be noted that the terms "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments", etc. in the description indicate that the described embodiments can include a specific feature, structure or characteristic, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it should be within the knowledge of those skilled in the related art to implement such a feature, structure or characteristic in combination with other embodiments (whether or not explicitly described).

[0023] Generally, the terms can be understood at least in part from the context in which they are used. For example, the term "one or more" as used herein, depending at least in part upon the context in which it is used, can be used to describe any feature, structure, or characteristic in a singular sense or can be used to describe combinations of features, structures or characteristics in a plural sense. In addition, the term "based on" can be understood as not necessarily requiring a set of exclusive factors, but instead, can allow for existence of additional or even a concurrent factor, depending at least in part on the context in which the phrase is used.

[0024] It can be understood that the meanings of "on", "over", and "above" in the present disclosure should be interpreted in the broadest way, such that "on" not only means "directly on" something, but also includes the meaning of "on" something with intervening features or layers therebetween, and "over" or "above" not only means the meaning of "over" or "above" something, but also can include the meaning of "over" or "above" something without intervening features or layers therebetween.

[0025] In addition, spatially relative terms such as "under", "below", "lower", "over", "upper" and the like can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein can be interpreted accordingly.

[0026] As Figure 1As shown, the embodiment of the present application provides a special functional hot melt film, comprising a hot melt adhesive matrix 100, a phase change microcapsule 200 is uniformly dispersed in the hot melt adhesive matrix 100, a phase change material 300 is wrapped in the phase change microcapsule 200, the phase change material 300 is octadecane, the particle size of the phase change microcapsule 200 is 50-100 nanometers, and the phase change microcapsule 200 is made of polycaprolactone material, and the phase change temperature of the phase change material 300 is set to 30-60 degrees Celsius. By uniformly dispersing the nanoscale phase change microcapsule in the hot melt adhesive matrix, the solid-liquid phase change of the octadecane phase change material at 30-60℃ is utilized to realize efficient buffering of the environment temperature. And the nanoscale size significantly improves the specific surface area of the phase change material, so that it can quickly exchange heat with the outside world, compared with the traditional macroscopic phase change material, the temperature response speed is improved, the environmental temperature fluctuation range is effectively reduced, and the strict requirements of electronic equipment heat dissipation and other scenes on temperature stability are effectively met.

[0027] As shown, Figures 2-9 As shown, the embodiment of the present application provides an online quality detection equipment for special functional hot melt film, comprising a mounting shell 1, a plurality of through holes 2 are formed on the top surface of the mounting shell 1, and a fixing pipe 3 is fixedly connected to the bottom surface of the mounting shell 1, when positioning detection of the special functional hot melt film is needed, the fixing pipe 3 can be connected with an external negative pressure equipment, negative pressure is extracted in the mounting shell 1 by the negative pressure equipment, so that the special functional hot melt film can be adsorbed and fixed at the through hole 2, and positioning operation of the special functional hot melt film is realized. Further, a plurality of support frames 32 are fixedly connected to the side wall of the mounting shell 1, the support frames 32 are concave and have mounting holes 33 on the bottom surface, support plates 34 are fixedly connected between adjacent support frames 32, the mounting holes 33 can be used for fixing and installing the device on the hot melt film production line, and the stability of the equipment during detection can be effectively improved by the support plates 34 and the support frames 32. A plurality of through grooves 4 are uniformly distributed and formed on the mounting shell 1, the through grooves 4 are movably connected with movable shells 5, temperature measuring sensors 6 and cameras 7 are fixedly connected to the top surface of each movable shell 5, a control module 8 is installed in the movable shell 5, a bottom plate 9 is fixedly connected to the bottom surface of the plurality of movable shells 5, a first electric push rod 10 is fixedly connected to the bottom plate 9, the first electric push rod 10 is fixedly connected with the mounting shell 1, a fill light 35 is fixedly connected to the top surface of the movable shell 5, the fill light 35 is arranged in a ring array and is a cold light lamp. In the technical scheme of the embodiment, the temperature sensor 6 can be used to monitor the temperature of the hot melt film during detection, the camera 7 can be used to take pictures of the damage and compression deformation of the hot melt film, the light supplement lamp 35 can be used to supplement light at the through groove 4, improve the clarity of the camera 7, and during the detection operation, the first electric push rod 10 can drive the bottom plate 9 to move, the bottom plate 9 drives the movable shell 5 to move, and the movable shell 5 is adjusted to an appropriate height, so that the temperature sensor 6 and the camera 7 can better monitor the operation, and the detection accuracy is improved. Further, the inner wall of each through groove 4 is provided with a sliding groove 36, and the outer side wall of the movable shell 5 is fixedly connected with a sliding plate 37 which is movably connected with the sliding groove 36, so that the movable shell 5 can stably move in the through groove 4. The upper side of the mounting shell 1 is provided with a movable plate 11, and a plurality of multifunctional quality inspection assemblies 13 are uniformly distributed on the movable plate 11. The multifunctional quality inspection assembly 13 comprises a vertical shell 21, a distance measuring device 22 is fixedly connected to the top surface of the vertical shell 21, a spring 23 is fixedly connected in the inner cavity of the vertical shell 21, one end of the spring 23 is fixedly connected with a vertical plate 24, the bottom surface of the vertical plate 24 extends out of the vertical shell 21 and is fixedly connected with a horizontal plate 25, a heating module 26 is fixedly connected to the bottom surface of the horizontal plate 25, and the same section adjacent two vertical shells 21 are fixedly connected with the same top plate 27, a second electric push rod 28 is fixedly connected to the center of the top plate 27, and the second electric push rod 28 is fixedly connected with the movable plate 11. In the technical scheme of the embodiment, when detecting the special functional hot melt film, the second electric push rod 28 drives the top plate 27 to move, the top plate 27 drives the vertical shell 21 to move, and the vertical shell 21 drives the vertical plate 24 inside it to move, so that the horizontal plate 25 on the bottom surface of the vertical plate 24 is in full contact with the special functional hot melt film. At this time, the heating module 26 is controlled in temperature, the gradient heating in the conveying direction of the hot melt film is realized, the temperature of the hot melt film is monitored in real time by the temperature sensor 6, the online detection operation of the temperature adjustment performance of the special functional hot melt film is completed, the second electric push rod 28 is pushed, the horizontal plate 25 is pressed on the hot melt film, the distance between the vertical plate 24 is measured by the distance measuring device 22, the pressure on the hot melt film is calculated by the compression amount of the spring 23, the deformation of the hot melt film is taken by the camera 7, the online compression performance detection of the special functional hot melt film is realized, and the detection function is various. A height adjusting assembly 12 is arranged between the mounting shell 1 and the movable plate 11, and the height adjusting assembly 12 comprises side plates 14, the left and right side walls of the mounting shell 1 and the movable plate 11 are fixedly connected with the side plates 14, the upper side plates 14 are movably connected with two screw rods 15 which are symmetrically movably connected front and back, the bottom ends of the screw rods 15 penetrate through the lower side plates 14 and are threadedly connected with the lower side plates 14, the top ends of the screw rods 15 are fixedly connected with belt pulleys 16, the same belt 17 is arranged between the four belt pulleys 16, the top end of one of the screw rods 15 penetrates through the belt pulley 16 and is fixedly connected with a motor 18, the motor 18 is fixedly connected with a mounting plate 19, and the mounting plate 19 is fixedly connected with the side plate 14. In the technical scheme of the embodiment, when the special functional hot melt film is produced, the motor 18 is started, the motor 18 drives the screw rod 15 to rotate, the screw rod 15 drives the belt pulley 16 to rotate, the transmission between the belt pulley 16 and the belt 17 can drive the four screw rods 15 to rotate together, the screw rods 15 are in threaded engagement with the lower side plates 14 and rotate, and the movable plate 11 can be driven to change in height, so that the installation of the monitoring equipment on the hot melt film production line and the detection requirement can be met. The front and back side walls of the movable plate 11 are provided with auxiliary assemblies 20, the auxiliary assemblies 20 comprise connecting plates 29, the left and right side walls of the movable plate 11 are symmetrically fixedly connected with the connecting plates 29, the connecting plates 29 are arranged in an L shape, and the same circular shaft 30 is movably connected between the two connecting plates 29 on the same side, and the circular shaft 30 is fixedly connected with a circular roller 31. In the technical scheme of the embodiment, when the height of the movable plate 11 is adjusted, the two circular rollers 31 on the sides can push the hot melt film, the special functional hot melt film can be stably unfolded on the lower side of the movable plate 11 by the two circular rollers 31, the accurate detection operation of the special functional hot melt film is facilitated, and the transmission stability of the special functional hot melt film production can be ensured by the rotation of the circular roller 31, so that the online detection operation is facilitated.

[0028] The present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application. In order for the public to have a thorough understanding of the present application, specific details are described in the following preferred embodiments of the present application, and the present application can also be completely understood without the description of these details by those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0029] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiment methods can be completed by programs instructing related hardware, and the programs can be stored in computer readable storage medium, such as ROM / RAM, magnetic disc, optical disc, etc.

[0030] The above merely preferred embodiments of the present application, it should be noted that for those of ordinary skill in the art, without departing from the principles of the present application, can also be made several improvements and refinements, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. A special functional hot melt film, comprising a hot melt adhesive matrix (100), characterized in that, Phase change microcapsules (200) are uniformly dispersed within the hot melt adhesive matrix (100), and each phase change microcapsule (200) encapsulates a phase change material (300), wherein the phase change material (300) is octadecane.

2. The special functional hot melt film according to claim 1, characterized in that, The phase change microcapsules (200) have a particle size of 50-100 nanometers and are made of polycaprolactone material.

3. The special functional hot melt film according to claim 1, characterized in that, The phase change temperature of the phase change material (300) is set at 30-60 degrees Celsius.

4. An online quality inspection device for special functional hot melt films, used to inspect the special functional hot melt films according to any one of claims 1-3, characterized in that, The system includes a mounting shell (1), on the top surface of which are provided several through holes (2), and a fixing tube (3) is fixedly connected to the bottom surface of which is the mounting shell (1). Several intersecting through slots (4) are evenly distributed on the mounting shell (1), and movable shells (5) are movably connected within each through slot (4). A temperature sensor (6) and a camera (7) are fixedly connected to the top surface of each movable shell (5), and a control module (8) is installed inside the movable shell (5). The system includes several movable shells (5)... A base plate (9) is fixedly connected to the bottom surface. A first electric push rod (10) is fixedly connected to the base plate (9). The first electric push rod (10) is fixedly connected to the mounting shell (1). A movable plate (11) is provided on the upper side of the mounting shell (1). A height adjustment component (12) is provided between the mounting shell (1) and the movable plate (11). Several multi-functional quality inspection components (13) are evenly distributed on the movable plate (11). Auxiliary components (20) are provided on the front and rear side walls of the movable plate (11).

5. The online quality inspection equipment for a special functional hot melt film according to claim 4, characterized in that, The height adjustment assembly (12) includes a side plate (14). The side plates (14) are fixedly connected to the left and right side walls of the mounting shell (1) and the movable plate (11). The side plates (14) are symmetrically connected to two threaded rods (15). The bottom end of the threaded rod (15) passes through the lower side plate (14) and is threadedly connected to the lower side plate (14). The top end of each threaded rod (15) is fixedly connected to a pulley (16). The four pulleys (16) are fitted with the same belt (17). The top end of one of the threaded rods (15) passes through the pulley (16) and is fixedly connected to a motor (18). The motor (18) is fixedly connected to a mounting plate (19). The mounting plate (19) is fixedly connected to the side plate (14).

6. The online quality inspection equipment for a special functional hot melt film according to claim 5, characterized in that, The multifunctional quality inspection component (13) includes a vertical shell (21), a ranging device (22) is fixedly connected to the top surface of the vertical shell (21), and a spring (23) is fixedly connected to the inner cavity of the vertical shell (21). A vertical plate (24) is fixedly connected to the other end of the spring (23). The bottom surface of the vertical plate (24) extends out of the vertical shell (21) and is fixedly connected to a horizontal plate (25). A heating module (26) is fixedly connected to the bottom surface of the horizontal plate (25). The same top plate (27) is fixedly connected to the top surface of two adjacent vertical shells (21) at the same cross section. A second electric push rod (28) is fixedly connected to the center of the top plate (27). The second electric push rod (28) is fixedly connected to the movable plate (11).

7. The online quality inspection equipment for a special functional hot melt film according to claim 6, characterized in that, The auxiliary component (20) includes a connecting plate (29). The connecting plates (29) are symmetrically fixedly connected to the left and right side walls of the movable plate (11). The connecting plates (29) are L-shaped, and the same round shaft (30) is movably connected between the two connecting plates (29) on the same side. A round roller (31) is fixedly connected to the round shaft (30).

8. The online quality inspection equipment for a special functional hot melt film according to claim 7, characterized in that, A number of support frames (32) are evenly distributed and fixedly connected on the side wall of the mounting shell (1). The support frames (32) are concave and have mounting holes (33) on their bottom surfaces. Support plates (34) are fixedly connected between adjacent support frames (32).

9. The online quality inspection equipment for a special functional hot melt film according to claim 8, characterized in that, A supplementary light (35) is fixedly connected to the top surface of the movable shell (5). The supplementary light (35) is arranged in a ring array and is a cold light.

10. The online quality inspection equipment for a special functional hot melt film according to claim 9, characterized in that, Each of the through slots (4) has a sliding groove (36) on its inner wall, and a sliding plate (37) is fixedly connected to the outer wall of the movable shell (5). The sliding plate (37) and the sliding groove (36) are movably connected.

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