Dispensing mylar pasting device

Abstract

The utility model discloses an adhesive dispensing and mylar pasting device, which belongs to the technical field of automation equipment and comprises a main bearing rack, a feeding structure, a material guiding structure, a cutting execution structure, an adhesive dispensing mechanism and an attaching execution mechanism, the feeding structure is arranged on the main bearing rack, and the material guiding structure is connected to the bearing rack between the feeding structure and the cutting execution structure. The cutting execution structure is arranged on the side face of the main bearing rack, and the dispensing mechanism is located above the material guiding structure and connected with the main bearing rack. And the attaching execution mechanism is adjacent to the cutting execution mechanism and the dispensing mechanism and is arranged at the end part of the material guide structure. The adhesive dispensing and mylar pasting device solves the technical problem of how to carry out adhesive dispensing and mylar pasting processes at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to a glue-dotting and mylar-pasting device. Background Technique

[0002] Mylar sheet, also known as PET insulation sheet or polyester film sheet, is a material with adhesiveness; it is usually transparent or semi-transparent, soft and easy to process. Due to its good adhesiveness, uniform thickness and strong temperature resistance, mylar sheet is widely used in the electronic manufacturing industry.

[0003] Specifically, glue-dotting and mylar-pasting is a common operation in the electronic manufacturing industry, mainly used for fixing and protecting surface-mounted electronic components. First, the mylar sheet is pasted on the electronic component by glue-dotting, which can effectively fix the component and prevent it from falling off or shifting due to vibration or collision during transportation or use; second, the mylar sheet can prevent the electronic component from being polluted and corroded by the external environment, such as dust, moisture, etc., thus prolonging the service life of the component; third, the mylar sheet has excellent insulation performance, which can ensure the electrical isolation between electronic components and prevent the occurrence of faults such as short circuits.

[0004] Generally speaking, the process of glue-dotting and mylar-pasting includes the following steps: first, prepare tools and materials such as mylar sheet or roll stock, glue-dotting machine, glue, etc.; then, use the glue-dotting machine to apply an appropriate amount of glue at the predetermined position of the electronic component; then, cover the mylar sheet on the glue-dotted electronic component and gently press it to make the mylar sheet closely fit with the electronic component; finally, according to the characteristics of the glue, certain curing treatment may be required, such as heat curing or natural drying, etc. Currently, these steps are usually carried out manually by operators, and in large-scale production applications, the process efficiency is not high.

[0005] Based on this, Chinese Patent CN209241413U discloses a mylar-pasting module, which includes a feeding component, a collecting component, a punching and pasting component, a moving component, and also includes an installation vertical plate vertically installed on an installation bottom plate. The feeding component, the collecting component and the punching and pasting component are all installed on the side of the installation vertical plate. The moving component is installed on the installation bottom plate and is located below the punching and pasting component. The punching and pasting component includes a punching cylinder arranged in the vertical direction. The driving end of the punching cylinder is installed with a punching head. The punching head passes through a punching bearing seat and is hollow. A plurality of vacuum suction holes are evenly opened at the punching end of the punching head. The vacuum suction holes are communicated with the inside of the punching head. A suction nozzle connected to an external vacuum suction device is also arranged on the punching head; the punching bearing seat is provided with a receiving groove for passing through the mylar tape in the horizontal direction. This technical solution can replace the manual operation of operators and improve the working efficiency and product yield of mylar-pasting.

[0006] However, the above-disclosed tape module still has the technical problem that the processes of dispensing glue and attaching the tape cannot be carried out simultaneously. Specifically, in some actual mounting production applications, users expect to apply glue in advance at the attaching position of the mylar sheet so that the mylar sheet can achieve a better adhesion life with the product to be attached. In the prior art, the dispensing station and the tape attaching station often operate independently. Operators often need to apply glue to the product to be attached at the dispensing station first, and then transfer it to the tape attaching station to cooperate with the subsequent attaching process. During the transfer process, the product that has completed dispensing glue needs to control the transfer time to prevent the position where the glue is applied from being contaminated or cured in advance; and it also needs to control the transfer distance of the product to avoid generating excessive assisting human resources. Therefore, production is time-consuming and laborious, which is not conducive to the realization of the process of dispensing glue and attaching the tape in large quantities. Summary of the Invention

[0007] Based on this, it is necessary to provide a dispensing and tape attaching device for solving the technical problem that the existing tape module cannot carry out the processes of dispensing glue and attaching the tape simultaneously.

[0008] A dispensing and tape attaching device includes: a main supporting frame, a feeding structure, a guiding structure, a cutting execution structure, a dispensing mechanism, and an attaching execution mechanism; the feeding structure is arranged on the main supporting frame, and the guiding structure is connected to the supporting frame between the feeding structure and the cutting execution structure; the cutting execution structure is arranged on the side of the main supporting frame, the dispensing mechanism is connected to the main supporting frame above the guiding structure; the attaching execution mechanism is arranged at the end of the guiding structure adjacent to the cutting execution structure and the dispensing mechanism.

[0009] Further, the feeding structure has a reel shaft, a storage turntable, a reel tensioning structure, a position sensor, and a feeding roller structure.

[0010] Furthermore, the reel shaft is connected to the main supporting frame, the storage turntable is movably connected to the reel shaft, and the reel tensioning structure is connected to the storage turntable; the position sensor is arranged between the storage turntable and the feeding roller structure, and the feeding roller structure is movably arranged on the main supporting frame.

[0011] Furthermore, the guiding structure has an adsorption part, a guiding support part, and a guiding roller structure; the adsorption part and the guiding support part are oppositely arranged on the side of the main supporting frame, and the guiding roller structure is movably arranged on the side of the main supporting frame at the ends of the adsorption part and the guiding support part.

[0012] Further, the cutting execution structure includes a cutting machine frame, a lateral transfer cylinder, a lateral moving block, a cutting connection frame, a pressing execution cylinder, a downward pressing telescopic block, a downward pressing linkage block, and a cutter structure.

[0013] Further, the cutting machine frame is connected to the main bearing frame, the lateral transfer cylinder is connected to the cutting machine frame, and the lateral transfer cylinder is drivingly connected to the lateral moving block.

[0014] Further, the cutting connection frame is connected to the lateral moving block, the pressing execution cylinder is connected to the cutting connection frame, the pressing execution cylinder is drivingly connected to the downward pressing telescopic block, and the downward pressing linkage block is connected to the downward pressing telescopic block; one side of the cutter structure is connected to the lower part of the cutting connection frame, and the other side of the cutter structure is connected to the downward pressing linkage block.

[0015] Further, the dispensing mechanism includes a dispensing machine frame, a dispensing driving cylinder, a dispensing telescopic rod, and a dispensing execution part; the dispensing machine frame is connected to the main bearing frame, the dispensing driving cylinder is connected to the side of the dispensing machine frame, the dispensing driving cylinder is drivingly connected to the dispensing telescopic rod, and the dispensing execution part is connected to the dispensing telescopic rod.

[0016] Further, the attaching execution mechanism includes an attaching driving cylinder, an attaching telescopic block, an attaching connection part, and an attaching rolling roller.

[0017] Further, the attaching driving cylinder is arranged on the side of the cutting machine frame, the attaching driving cylinder is drivingly connected to the attaching telescopic block, the attaching connection part is connected under the attaching telescopic block, and the attaching rolling roller is movably arranged at the bottom of the attaching connection part.

[0018] In summary, the dispensing and attaching mylar device of the present invention is respectively provided with a main bearing frame, a feeding structure, a guiding structure, a cutting execution structure, a dispensing mechanism, and an attaching execution mechanism; the feeding structure is arranged on the main bearing frame, the guiding structure is connected to the supporting frame between the feeding structure and the cutting execution structure; the cutting execution structure is arranged on the side of the main bearing frame, the dispensing mechanism is connected to the main bearing frame above the guiding structure; the attaching execution mechanism is arranged at the end of the guiding structure adjacent to the cutting execution structure and the dispensing mechanism. Thus, the dispensing and attaching mylar device of the present invention can solve the technical problem that the existing mylar attaching module cannot perform the processes of dispensing and attaching mylar simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a dispensing and attaching mylar device of the present invention;

[0020] Figure 2 This is a schematic structural view of another direction of a glue - dispensing and mylar - pasting device of the present utility model;

[0021] Figure 3 This is a schematic structural view of another direction of a glue - dispensing and mylar - pasting device of the present utility model;

[0022] Figure 4 This is a schematic structural view of a partial structure of another direction of a glue - dispensing and mylar - pasting device of the present utility model. Detailed implementation manners

[0023] To make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counter - clockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0026] In the present utility model, unless otherwise clearly defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0029] Please refer to Figures 1 to 4 , a dispensing and attaching mylar device of the present utility model includes: a main support frame 1, a feeding structure 2, a guiding structure 3, a cutting execution structure 4, a dispensing mechanism 5 and an attaching execution mechanism 6; the feeding structure 2 is disposed on the main support frame 1, and the guiding structure 3 is connected to the support frame 1 between the feeding structure 2 and the cutting execution structure 4; the cutting execution structure 4 is disposed on the side of the main support frame 1, the dispensing mechanism 5 is connected to the main support frame 1 above the guiding structure 3; the attaching execution mechanism 6 is disposed at the end of the guiding structure 3 adjacent to the cutting execution structure 4 and the dispensing mechanism 5.

[0030] Specifically, when the dispensing and attaching mylar device of the present utility model is in the working process, the mylar roll material is pre-stored and received in the feeding structure 2. When the processes of dispensing and attaching start, the feeding structure 2 can output the mylar tape to the guiding structure 3 under the drive of an external traction action mechanism; after guiding and correcting the shape of the mylar tape through the guiding structure 3, it is output from the end of the guiding structure 3 to the lower part of the cutting execution structure 4. At this time, the dispensing mechanism 5 is activated and adhesives such as glue are conveyed to the preset position of the product to be attached and processed; thereafter, the cutting execution structure 4 operates to cut the mylar roll material into mylar sheets of a preset length; then, the attaching execution mechanism 6 attaches the cut mylar sheet to the position where glue has been dispensed on the product and performs a rolling pressure-holding process on the attached mylar sheet to enable the mylar sheet to be fully adhered to the glue. It can be seen that the dispensing and attaching mylar device of the present utility model can solve the technical problem that the existing mylar attaching module cannot perform the processes of dispensing and attaching mylar simultaneously.

[0031] Furthermore, the feeding structure 2 has a material tray rotating shaft 201, a storage turntable 202, a material tray tensioning structure 203, a position sensor 204, and a feeding roller structure 205; the material tray rotating shaft 201 is connected to the main bearing frame 1, the storage turntable 202 is movably connected to the material tray rotating shaft 201, and the material tray tensioning structure 203 is connected to the storage turntable 202; the position sensor 204 is arranged between the storage turntable 202 and the feeding roller structure 205, and the feeding roller structure 205 is movably arranged on the main bearing frame 1.

[0032] Specifically, when the mylar roll material is placed on the storage turntable 202, the material tray tensioning structure 203 can tension and limit the mylar roll material. Moreover, under the action of an external traction mechanism, when the storage turntable 202 rotates, it can release the mylar tape in segments. More specifically, the material tray tensioning structure 203 can have a tensioning turntable 203a and a number of pneumatic claws 203b; a number of the pneumatic claws 203b are evenly distributed along the circumference of the tensioning turntable 203a. Thus, when external compressed gas enters the tensioning turntable 203a under the action of a cylinder assembly, each pneumatic claw 203b can be opened or contracted. When opened, it tensions and limits the inner circle of the mylar roll material, and when contracted, it can release the inner circle of the roll material to facilitate the user to remove the roll material again.

[0033] Further, the feeding roller structure 205 can rotate on the side of the main bearing frame 1 to facilitate guiding the tape to the feeding structure 2; and the position sensor 204 can sense the position of the Mylar tape when it travels from the storage turntable 202 to the feeding structure 2; thus, it is convenient for the subsequent feeding structure 2 to correct its position.

[0034] Further, the guiding structure 3 has an adsorption part 301, a guiding support part 302 and a guiding roller structure 303; the adsorption part 301 and the guiding support part 302 are oppositely arranged on the side of the main bearing frame 1, and the guiding roller structure 303 is movably arranged at the end of the adsorption part 301 and the guiding support part 302 on the side of the main bearing frame 1. Specifically, the tape output from the feeding roller structure 205 can enter between the adsorption part 301 and the guiding support part 302, and the adsorption part 301 is connected to an external air source; thus, the tape located between the two can be lifted or lowered through adsorption, and thus, in cooperation with the position sensor 204, the position of the tape can be adjusted; it is also beneficial for the tape to flow out from the ends of the two and enter the guiding roller structure 303, so as to lift or lower the tape and enable the cutting execution structure 4 to perform cutting processing on it.

[0035] Further, the cutting execution structure 4 has a cutting frame 401, a lateral transfer cylinder 402, a lateral moving block 403, a cutting connection frame 404, a pressing execution cylinder 405, a downward pressing telescopic block 406, a downward pressing linkage block 407 and a cutter structure 408; the cutting frame 401 is connected to the main bearing frame 1, the lateral transfer cylinder 402 is connected to the cutting frame 401, and the lateral transfer cylinder 402 is drivingly connected to the lateral moving block 403; the cutting connection frame 404 is connected to the lateral moving block 403, the pressing execution cylinder 405 is connected to the cutting connection frame 404, the pressing execution cylinder 405 is drivingly connected to the downward pressing telescopic block 406, and the downward pressing linkage block 407 is connected to the downward pressing telescopic block 406; one side of the cutter structure 408 is connected to the lower part of the cutting connection frame 404, and the other side of the cutter structure 408 is connected to the downward pressing linkage block 407.

[0036] Specifically, the cutter structure 408 can be a scissor-shaped cutting edge structure, one leg of which is connected to the cutting connection frame 404, and the other leg of which is connected to the downward pressing linkage block 407. Thus, when the material lifted and output from the export roller structure 303 needs to be cut, the lateral transfer cylinder 402 is activated and drives the lateral moving block 403 to a preset position. At this time, the cutting connection frame 404 drives the cutter structure 408 connected to its lower part so that the position of the tape to be cut is located between the cutting edges of the cutter structure 408. At this time, the pressing execution cylinder 405 is activated and drives the downward pressing telescopic block 406 to drive the downward pressing linkage block 407 downward. Thus, the downward pressing linkage block 407 presses the cutter structure 408. At this time, the cutting edges of the cutter structure 408 are closed, and the mylar tape is cut and processed. After one cutting is completed, all components are reset.

[0037] Further, the dispensing mechanism 5 includes a dispensing machine frame 501, a dispensing drive cylinder 502, a dispensing telescopic rod 503, and a dispensing execution part 504. The dispensing machine frame 501 is connected to the main bearing frame 1. The dispensing drive cylinder 502 is movably connected to the side of the dispensing machine frame 501. The dispensing drive cylinder 502 is drivingly connected to the dispensing telescopic rod 503. The dispensing execution part 504 is connected to the dispensing telescopic rod 503. Specifically, the dispensing drive cylinder 502 can rotate as required along its connection with the dispensing machine frame 501. When dispensing is required at a preset position of the product, the dispensing drive cylinder 502 is activated and drives the dispensing telescopic rod 503 to extend, thereby pushing the dispensing execution part 504 to a preset position so that the dispensing execution part 504 performs a dispensing process on this position. After one dispensing operation is completed, the dispensing drive cylinder 502 can drive the dispensing execution part 504 to reset.

[0038] Further, the attaching actuator 6 includes an attaching driving cylinder 601, an attaching telescopic block 602, an attaching connecting part 603, and an attaching rolling roller 604; the attaching driving cylinder 601 is arranged on the side of the cutting frame 401, the attaching driving cylinder 601 is drivingly connected to the attaching telescopic block 602, the attaching connecting part 603 is connected under the attaching telescopic block 602, and the attaching rolling roller 604 is movably arranged at the bottom of the attaching connecting part 603. Specifically, when it is necessary to attach the cut mylar sheet onto the position where dispensing is completed, the attaching driving cylinder 601 is activated and drives the attaching telescopic block 602 to move downward, so that the attaching rolling roller 604 arranged under the attaching connecting part 603 presses the corresponding mylar sheet to above the dispensing position. Since the attaching driving cylinder 601 can be inclinedly arranged on the side of the cutting frame 401, when the attaching telescopic block 602 drives the attaching connecting part 603 to move downward, the moving track of the attaching rolling roller 604 is obliquely downward and forward at the same time. Thus, the action of attaching and rolling the mylar sheet onto the surface of the dispensed product can be achieved. After a single attaching action is completed, the attaching driving cylinder 601 drives each component to reset.

[0039] In summary, the dispensing and mylar attaching device of the present utility model respectively includes a main supporting frame 1, a feeding structure 2, a guiding structure 3, a cutting actuator 4, a dispensing mechanism 5, and an attaching actuator 6; the feeding structure 2 is arranged on the main supporting frame 1, the guiding structure 3 is connected to the supporting frame 1 between the feeding structure 2 and the cutting actuator 4; the cutting actuator 4 is arranged on the side of the main supporting frame 1, the dispensing mechanism 5 is connected to the main supporting frame 1 above the guiding structure 3; the attaching actuator 6 is arranged at the end of the guiding structure 3 adjacent to the cutting actuator 4 and the dispensing mechanism 5. Thus, the dispensing and mylar attaching device of the present utility model can solve the technical problem that the existing mylar attaching module cannot perform the processes of dispensing and mylar attaching simultaneously.

[0040] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0041] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A dispensing and attaching mylar device, characterized in that, It includes: a main bearing frame (1), a feeding structure (2), a guiding structure (3), a cutting execution structure (4), a dispensing mechanism (5), and an attaching execution mechanism (6); the feeding structure (2) is arranged on the main bearing frame (1), the guiding structure (3) is connected to the main bearing frame (1) between the feeding structure (2) and the cutting execution structure (4); the cutting execution structure (4) is arranged on the side of the main bearing frame (1), the dispensing mechanism (5) is connected to the main bearing frame (1) above the guiding structure (3); the attaching execution mechanism (6) is arranged at the end of the guiding structure (3) adjacent to the cutting execution structure (4) and the dispensing mechanism (5).

2. The dispensing and attaching mylar device according to claim 1, wherein: The feeding structure (2) has a tray rotating shaft (201), a storage turntable (202), a tray tensioning structure (203), a position sensor (204), and a feeding roller structure (205).

3. The dispensing and attaching mylar device according to claim 2, characterized in that: The tray rotating shaft (201) is connected to the main bearing frame (1), the storage turntable (202) is movably connected to the tray rotating shaft (201), and the tray tensioning structure (203) is connected to the storage turntable (202); the position sensor (204) is arranged between the storage turntable (202) and the feeding roller structure (205), and the feeding roller structure (205) is movably arranged on the main bearing frame (1).

4. A dispensing and attaching mylar device according to claim 3, wherein: The guiding structure (3) has a suction part (301), a guiding support part (302), and a guiding roller structure (303); the suction part (301) and the guiding support part (302) are oppositely arranged on the side of the main bearing frame (1), and the guiding roller structure (303) is movably arranged on the side of the main bearing frame (1) at the ends of the suction part (301) and the guiding support part (302).

5. The dispensing and attaching mylar device according to claim 4, characterized in that: The cutting execution structure (4) has a cutting frame (401), a transverse transfer cylinder (402), a transverse moving block (403), a cutting connection frame (404), a pressing execution cylinder (405), a downward pressing telescopic block (406), a downward pressing linkage block (407), and a cutter structure (408).

6. The dispensing and attaching mylar device according to claim 5, characterized in that: The cutting frame (401) is connected to the main bearing frame (1), the transverse transfer cylinder (402) is connected to the cutting frame (401), and the transverse transfer cylinder (402) is drivingly connected to the transverse moving block (403).

7. The dispensing and attaching mylar device according to claim 6, characterized in that: The cutting connection frame (404) is connected to the transverse moving block (403), the pressing execution cylinder (405) is connected to the cutting connection frame (404), the pressing execution cylinder (405) is drivingly connected to the downward pressing telescopic block (406), and the downward pressing linkage block (407) is connected to the downward pressing telescopic block (406); one side of the cutter structure (408) is connected to the lower part of the cutting connection frame (404), and the other side of the cutter structure (408) is connected to the downward pressing linkage block (407).

8. The dispensing and attaching mylar device according to claim 7, wherein: The dispensing mechanism (5) includes a dispensing machine frame (501), a dispensing drive cylinder (502), a dispensing telescopic rod (503), and a dispensing execution part (504); the dispensing machine frame (501) is connected to the main bearing frame (1), the dispensing drive cylinder (502) is connected to the side of the dispensing machine frame (501), the dispensing drive cylinder (502) is drivingly connected to the dispensing telescopic rod (503), and the dispensing execution part (504) is connected to the dispensing telescopic rod (503).

9. The dispensing and attaching mylar device according to claim 8, characterized in that: The attaching execution mechanism (6) includes an attaching drive cylinder (601), an attaching telescopic block (602), an attaching connecting part (603), and an attaching rolling roller (604).

10. A dispensing and attaching mylar device according to claim 9, wherein: The attaching drive cylinder (601) is arranged on the side of the cutting machine frame (401), the attaching drive cylinder (601) is drivingly connected to the attaching telescopic block (602), the attaching connecting part (603) is connected under the attaching telescopic block (602), and the attaching rolling roller (604) is movably arranged at the bottom of the attaching connecting part (603).

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