A cleaning mechanism for applying adhesive to automotive rubber strips

Abstract

This utility model belongs to the field of automotive adhesive strip coating technology, specifically a cleaning mechanism for automotive adhesive strip coating, including a base plate and a cross rail; multiple layers of cylinders slide on the cross rail; a first clamping cylinder is provided at the output end of the multiple layers of cylinders; a second clamping cylinder is fixedly connected to the base plate by a fixing post; a first loop frame is fixedly connected to the base plate, and the first loop frame is located directly below the clamping claw of the second clamping cylinder; a scissor-type cylinder is fixedly connected to the base plate by a fixing post; a second loop frame is fixedly connected to the base plate; the second loop frame is located below the scissors of the scissor-type cylinder; a winding component is provided inside the second loop frame; an adhesive component is provided on the base plate; this utility model provides a cleaning mechanism for automotive adhesive strip coating to solve the problem of needing to frequently add volatile liquids, which also leads to a large amount of liquid waste.

Description

Technical Field

[0001] This utility model belongs to the field of automotive rubber strip coating technology, specifically a cleaning mechanism for automotive rubber strip coating. Background Technology

[0002] When automotive rubber strips are operated semi-automatically by mechanical devices, the rubber strips need to be placed manually on the clamps, and then the clamps are moved. After cleaning, wiping and drying, the adhesive backing is applied. Cleaning is to ensure the adhesive backing adheres firmly.

[0003] In the existing technology, when applying adhesive to automotive rubber strips, volatile liquids such as xylene or alcohol are generally used for cleaning. However, the volatile liquid is usually placed in a gaiwan, but because the volatile liquid will completely evaporate within a few hours, it needs to be added frequently, which also leads to a lot of waste of liquid. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a cleaning mechanism for applying adhesive to automotive rubber strips, thereby solving the problem of excessive waste of cleaning fluid before applying adhesive to automotive rubber strips as mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A cleaning mechanism for applying adhesive to automotive adhesive strips, comprising a base plate and a horizontal rail; a multi-layer cylinder slides on the horizontal rail; a first clamping cylinder is provided at the output end of the multi-layer cylinder; a second clamping cylinder is fixedly connected to the base plate via a fixing post; a first loop frame is fixedly connected to the base plate, and the first loop frame is located directly below the clamping claw of the second clamping cylinder; a scissor-type cylinder is fixedly connected to the base plate via a fixing post; a second loop frame is fixedly connected to the base plate; the second loop frame is located below the scissors of the scissor-type cylinder; a winding component is provided inside the second loop frame; and an adhesive component is provided on the base plate.

[0006] Preferably, the winding component includes pressure rollers; a set of symmetrically distributed pressure rollers are rotatably connected to the second spiral frame; a first through groove is provided on the base plate, and the first through groove and the bottom end of the second spiral frame are connected to each other; a pair of symmetrically distributed fixing plates are fixedly connected to the base plate, and a wheel-releasing unit is provided in the fixing plate.

[0007] Preferably, the unloading unit includes a winding wheel; the winding wheel is provided between a pair of fixed plates; a first through hole is provided in the middle of the winding wheel; a first threaded rod is provided on one side of the fixed plate, and the end of the first threaded rod passes through the pair of fixed plates and the first through hole and is threadedly connected to a nut.

[0008] Preferably, the viscous component includes an L-shaped plate; a second through groove is formed on the base plate; an L-shaped plate is fixedly connected to the base plate; a support column is fixedly connected to the L-shaped plate; a fixing column is fixedly connected to the support column; a first cavity is formed inside the fixing column; a piston is slidably connected to the first cavity, and a downward pressure column is fixedly connected to the top of the piston. The top of the downward pressure column extends out of the fixing column, passes through the second through groove, and is fitted with an arc-shaped cover. The top surface of the downward pressure column and the bottom of the middle part of the arc-shaped cover are flush with each other. The downward pressure column is installed on the top of the fixing column through an elastic unit. Liquid enters the first cavity through an inlet unit. Liquid enters the arc-shaped cover through an outlet unit. A vent hole is formed at the top of the first cavity.

[0009] Preferably, the elastic unit includes an annular plate; the annular plate is fixedly connected to the outer wall of the pressing column; the bottom end of the annular plate is fixedly connected to the top of the fixed column by a pressing spring.

[0010] Preferably, the liquid inlet unit includes a liquid inlet hose; a liquid tank is fixedly connected to the L-shaped plate; a liquid inlet pipe is fixedly connected to the outer wall of the liquid tank; the liquid tank is interconnected with the bottom end of the first cavity through the liquid inlet hose; and a one-way valve is provided inside the liquid inlet hose.

[0011] Preferably, the liquid outlet unit includes a second cavity; the pressure column has a second cavity inside; the top of the pressure column has a set of leakage holes, and the second cavity and the leakage holes are interconnected; the bottom side wall of the first cavity is interconnected with the second cavity through a liquid outlet hose; the liquid outlet hose is equipped with a one-way valve.

[0012] Preferably, the center points of the arc-shaped cover and the lower pressure column, the center point of the scissor of the scissor-type cylinder, the center point of the clamping claw of the first clamping cylinder, and the center point of the clamping claw of the second clamping cylinder coincide with each other.

[0013] The advantages of this utility model, which differ from existing technologies, are as follows:

[0014] 1. The cleaning mechanism for applying adhesive to automotive adhesive strips according to this utility model first clamps the non-woven fabric from the winding component using a first clamping cylinder, then cuts it using a scissor-type cylinder, then impregnates the non-woven fabric with an adhesive component, and then cleans the moving adhesive strip (using existing clamping and moving operations). After cleaning, the clamped non-woven fabric is placed in the clamping position of a second clamping cylinder, then the first clamping cylinder is released, and the second clamping cylinder clamps the non-woven fabric again. Then the first clamping cylinder moves upward through a multi-layer cylinder to remove the non-woven fabric. The above operation is repeated to complete the impregnation operation of the non-woven fabric.

[0015] 2. The cleaning mechanism for applying adhesive to automotive adhesive strips according to this utility model involves winding non-woven fabric onto a roller, placing the roller between a pair of fixed plates via a first threaded rod and a nut, then guiding the non-woven fabric through a first through groove into a second spiral frame, and finally pulling it out between a pair of pressure rollers, so that the non-woven fabric is in a relatively vertical state, which facilitates the cutting by the scissor-type cylinder and the clamping by the first clamping cylinder. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the cleaning mechanism for applying adhesive to automotive rubber strips according to this utility model;

[0018] Figure 2 It is a 3D view of the wound component;

[0019] Figure 3 This is a cross-sectional view of the reel;

[0020] Figure 4 This is a cross-sectional view of the viscous component;

[0021] Figure 5 yes Figure 4 Enlarged view of a portion of point A in the middle;

[0022] Figure 6 It is a 3D view of the viscous component.

[0023] In the diagram: 1. Base plate; 11. Horizontal rail; 12. Multi-layer cylinder; 13. First clamping cylinder; 14. Second clamping cylinder; 15. First loop frame; 16. Scissor-type cylinder; 17. Second loop frame; 2. Pressure roller; 22. Fixing plate; 23. Roller; 24. First through hole; 25. First threaded rod; 26. Nut; 3. L-shaped plate; 31. Arc-shaped cover; 32. Support column; 33. Fixing column; 34. First cavity; 35. Downward pressure column; 36. Piston; 37. Annular plate; 38. Downward pressure spring; 4. Liquid inlet hose; 41. Liquid tank; 42. Liquid inlet pipe; 43. Second cavity; 44. Leakage hole; 45. Liquid outlet hose. Detailed Implementation

[0024] To illustrate in detail the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this utility model, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this utility model and are therefore intended to limit the scope of protection of this utility model.

[0025] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0026] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0027] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0028] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0029] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0030] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0031] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0032] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0033] like Figures 1 to 6As shown, the cleaning mechanism for applying adhesive to automotive rubber strips according to this utility model includes a base plate 1 and a horizontal rail 11; a multi-layer cylinder 12 slides on the horizontal rail 11; a first clamping cylinder 13 is provided at the output end of the multi-layer cylinder 12; a second clamping cylinder 14 is fixedly connected to the base plate 1 by a fixing post 33; a first loop frame 15 is fixedly connected to the base plate 1, and the first loop frame 15 is located directly below the clamping claw of the second clamping cylinder 14; a scissor-type cylinder 16 is fixedly connected to the base plate 1 by a fixing post 33. A second loop frame 17 is fixedly connected to the base plate 1; the second loop frame 17 is located below the scissors of the scissor-type cylinder 16; a winding component is provided inside the second loop frame 17; an adhesive component is provided on the base plate 1; in the prior art, when applying adhesive to automotive rubber strips, volatile liquids such as xylene or alcohol are generally used for cleaning. However, the volatile liquid is usually placed in a gaiwan, but because the volatile liquid will completely evaporate within a few hours, it needs to be added frequently. This can also lead to a large waste of liquid. Therefore, in operation, the multi-layer cylinder 12 slides on the horizontal rail 11 using existing technology, which will not be described in detail. When cleaning the adhesive strip, the first clamping cylinder 13 clamps the non-woven fabric from the winding part, and then the scissor-type cylinder 16 cuts it. Then, the non-woven fabric is soaked in the adhesive component, and then the moving adhesive strip is cleaned (using existing clamping and moving operations). After cleaning, the clamped non-woven fabric is placed in the second clamping part. The first clamping cylinder 13 is released from the clamping position of the cylinder 14, and then the nonwoven fabric is clamped by the second clamping cylinder 14. Then the first clamping cylinder 13 moves upward through the multi-layer cylinder 12 to remove the nonwoven fabric. The above operation is repeated to complete the dyeing operation of the nonwoven fabric (where the multi-layer cylinder 12, the first clamping cylinder 13, the second clamping cylinder 14, the scissor cylinder 16 and the horizontal rail 11 are all existing technologies, such as the scissor cylinder 16 can be MHC2-20D or MHC2-25D).

[0034] The winding component includes a pressure roller 2; a set of symmetrically distributed pressure rollers 2 are rotatably connected to the second spiral frame 17; a first through groove is provided on the base plate 1, and the first through groove and the bottom end of the second spiral frame 17 are connected to each other; a pair of symmetrically distributed fixing plates 22 are fixedly connected to the base plate 1, and a wheel release unit is provided in the fixing plate 22.

[0035] The unloading unit includes a winding wheel 23; the winding wheel 23 is provided between a pair of fixed plates 22; a first through hole 24 is provided in the middle of the winding wheel 23; a first threaded rod 25 is provided on one side of the fixed plate 22, and the end of the first threaded rod 25 passes through the pair of fixed plates 22 and the first through hole 24 and is threadedly connected to a nut 26;

[0036] During operation, nonwoven fabric is wound onto the roller 23, and then the roller 23 is placed between a pair of fixed plates 22 via the first threaded rod 25 and the nut 26. The nonwoven fabric then enters the second loop frame 17 through the first through groove, and is then pulled out between a pair of pressure rollers 2, so that the nonwoven fabric is in a relatively vertical state, which facilitates the cutting by the scissor-type cylinder 16 and the clamping by the first clamping cylinder 13. The pair of pressure rollers 2 also perform a clamping operation on the nonwoven fabric.

[0037] The viscous component includes an L-shaped plate 3; a second through groove is provided on the base plate 1; the L-shaped plate 3 is fixedly connected to the base plate 1; a support column 32 is fixedly connected to the L-shaped plate 3; a fixing column 33 is fixedly connected to the support column 32; a first cavity 34 is provided inside the fixing column 33; a piston 36 is slidably connected to the first cavity 34, and a pressing column 35 is fixedly connected to the top of the piston 36. The top of the pressing column 35 extends out of the fixing column 33, passes through the second through groove, and is fitted with an arc-shaped cover 31. The top surface of the pressing column 35 and the bottom of the middle part of the arc-shaped cover 31 are flush with each other; the pressing column 35 is installed on the top of the fixing column 33 through an elastic unit; liquid enters the first cavity 34 through an inlet unit; liquid enters the arc-shaped cover 31 through an outlet unit; a vent hole is provided at the top of the first cavity 34.

[0038] The elastic unit includes an annular plate 37; the annular plate 37 is fixedly connected to the outer wall of the pressing column 35; the bottom end of the annular plate 37 is fixedly connected to the top end of the fixed column 33 by a pressing spring 38;

[0039] The liquid inlet unit includes a liquid inlet hose 4; a liquid tank 41 is fixedly connected to the L-shaped plate 3; a liquid inlet pipe 42 is fixedly connected to the outer wall of the liquid tank 41; the liquid tank 41 is interconnected with the bottom end of the first cavity 34 through the liquid inlet hose 4; a one-way valve is provided inside the liquid inlet hose 4.

[0040] The liquid outlet unit includes a second cavity 43; the pressure column 35 has a second cavity 43 inside; the top of the pressure column 35 has a set of leakage holes 44, and the second cavity 43 and the leakage holes 44 are interconnected; the bottom side wall of the first cavity 34 is interconnected with the second cavity 43 through a liquid outlet hose 45; a one-way valve is provided inside the liquid outlet hose 45;

[0041] During operation, the first clamping cylinder 13 clamps the non-woven fabric and moves it to directly above the arc-shaped cover 31. Then, the multi-layer cylinder 12 is activated, causing the clamping claws of the first clamping cylinder 13 to press down on the non-woven fabric, fitting it against the middle of the arc-shaped cover 31 and the pressing column 35. The arc-shaped cover 31 and the pressing column 35 then move downwards, pressing down on the pressing spring 38. The downward movement of the pressing column 35 causes the piston 36 to move downwards, allowing the liquid in the first cavity 34 to enter the second cavity 43 through the liquid outlet hose 45. Finally, the liquid flows out through the drain hole 44. The nonwoven fabric is impregnated and dyed. Then, the first clamping cylinder 13 and the nonwoven fabric move upward. At the same time, the arc-shaped cover 31 and the lower pressure column 35 move upward through the lower pressure spring 38, and the piston 36 moves upward. The liquid enters the first cavity 34 through the liquid inlet pipe 42. The above operation is repeated so that the liquid in the liquid tank 41 can enter the arc-shaped cover 31 intermittently to complete the impregnation and dyeing of the nonwoven fabric. At the same time, the liquid is prevented from being exposed to the air. The above operation not only improves the impregnation and dyeing efficiency, but also avoids the waste caused by the volatile liquid being exposed to the air.

[0042] The center points of the arc-shaped cover 31 and the lower pressure column 35, the center point of the scissor of the scissor cylinder 16, the center point of the clamping claw of the first clamping cylinder 13, and the center point of the clamping claw of the second clamping cylinder 14 coincide with each other.

[0043] Working principle: When cleaning the adhesive strip, the non-woven fabric is first clamped from the winding component by the first clamping cylinder 13, and then cut by the scissor-type cylinder 16. The non-woven fabric is then soaked in an adhesive component, and the moving adhesive strip is cleaned (using existing clamping and moving mechanisms). After cleaning, the clamped non-woven fabric is placed in the clamping position of the second clamping cylinder 14. The first clamping cylinder 13 is then released, and the second clamping cylinder 14 clamps the non-woven fabric again. The first clamping cylinder... 13. The nonwoven fabric is removed by moving the multi-layer cylinder 12 upwards. The above operation is repeated to complete the nonwoven fabric impregnation operation. The nonwoven fabric is wound onto the roller 23, and then the roller 23 is placed between a pair of fixing plates 22 through the first threaded rod 25 and the nut 26. The nonwoven fabric then enters the second loop frame 17 through the first through groove, and is then pulled out between a pair of pressure rollers 2, so that the nonwoven fabric is in a relatively vertical state, which facilitates the cutting by the scissor-type cylinder 16 and the clamping by the first clamping cylinder 13. The first clamping cylinder 13 clamps the nonwoven fabric and moves it to directly above the arc-shaped cover 31. Then, the multi-layer cylinder 12 is activated, causing the clamping claws of the first clamping cylinder 13 to press down on the nonwoven fabric, fitting it against the middle of the arc-shaped cover 31 and the pressing column 35. The arc-shaped cover 31 and the pressing column 35 then move downwards, pressing down the pressing spring 38. The downward movement of the pressing column 35 causes the piston 36 to move downwards, allowing the liquid in the first cavity 34 to enter the second cavity 43 through the liquid outlet hose 45. The liquid then flows out through the leakage hole 44, affecting the nonwoven fabric. The fabric is immersed in dye. Then, the first clamping cylinder 13 and the nonwoven fabric move upward. At the same time, the arc-shaped cover 31 and the lower pressure column 35 move upward through the lower pressure spring 38, and the piston 36 moves upward. The liquid enters the first cavity 34 through the liquid inlet pipe 42. The above operation is repeated so that the liquid in the liquid tank 41 can enter the arc-shaped cover 31 intermittently to complete the immersion of the nonwoven fabric. At the same time, the liquid is prevented from being exposed to the air. The above operation not only improves the immersion efficiency, but also avoids the waste caused by the volatile liquid being exposed to the air.

[0044] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cleaning mechanism for applying adhesive to automotive rubber strips, characterized in that, The device includes a base plate and a horizontal rail; multiple layers of cylinders slide on the horizontal rail; a first clamping cylinder is provided at the output end of each multi-layer cylinder; a second clamping cylinder is fixedly connected to the base plate via a fixing post; a first loop frame is fixedly connected to the base plate, and the first loop frame is located directly below the clamping claw of the second clamping cylinder; a scissor-type cylinder is fixedly connected to the base plate via a fixing post; a second loop frame is fixedly connected to the base plate; the second loop frame is located below the scissors of the scissor-type cylinder; a winding component is provided inside the second loop frame; and a viscous component is provided on the base plate.

2. The cleaning mechanism for applying adhesive to a rubber strip of a vehicle according to claim 1, wherein The winding component includes pressure rollers; a set of symmetrically distributed pressure rollers are rotatably connected to the second spiral frame; a first through groove is provided on the base plate, and the first through groove and the bottom end of the second spiral frame are connected to each other; a pair of symmetrically distributed fixing plates are fixedly connected to the base plate, and a wheel-releasing unit is provided in the fixing plate.

3. The cleaning mechanism for applying adhesive to automotive rubber strips according to claim 2, characterized in that, The unloading unit includes a winding wheel; a winding wheel is provided between a pair of fixed plates; a first through hole is provided in the middle of the winding wheel; a first threaded rod is provided on one side of the fixed plate, and the end of the first threaded rod passes through the pair of fixed plates and the first through hole and is threadedly connected to a nut.

4. The cleaning mechanism for applying adhesive to a rubber strip of a vehicle according to claim 3, wherein The viscous component includes an L-shaped plate; a second through groove is formed on the base plate; an L-shaped plate is fixedly connected to the base plate; a support column is fixedly connected to the L-shaped plate; a fixed column is fixedly connected to the support column; a first cavity is formed inside the fixed column; a piston is slidably connected to the first cavity, and a downward pressure column is fixedly connected to the top of the piston. The top of the downward pressure column extends out of the fixed column, passes through the second through groove, and is fitted with an arc-shaped cover. The top surface of the downward pressure column and the bottom of the middle part of the arc-shaped cover are flush with each other. The downward pressure column is installed on the top of the fixed column through an elastic unit. Liquid enters the first cavity through an inlet unit. Liquid enters the arc-shaped cover through an outlet unit. A vent hole is formed at the top of the first cavity.

5. The cleaning mechanism for applying adhesive to a rubber strip of a vehicle according to claim 4, wherein The elastic unit includes an annular plate; the annular plate is fixedly connected to the outer wall of the pressing column; the bottom end of the annular plate is fixedly connected to the top of the fixed column by a pressing spring.

6. The cleaning mechanism for applying adhesive to a rubber strip of a vehicle according to claim 5, wherein The liquid inlet unit includes a liquid inlet hose; a liquid tank is fixedly connected to the L-shaped plate; a liquid inlet pipe is fixedly connected to the outer wall of the liquid tank; the liquid tank is interconnected with the bottom of the first cavity through the liquid inlet hose; and a one-way valve is provided inside the liquid inlet hose.

7. The cleaning mechanism for applying adhesive to a rubber strip of a vehicle according to claim 6, wherein The liquid outlet unit includes a second cavity; the pressure column has a second cavity inside; the top of the pressure column has a set of leakage holes, and the second cavity and the leakage holes are interconnected; the bottom side wall of the first cavity is interconnected with the second cavity through a liquid outlet hose; the liquid outlet hose is equipped with a one-way valve.

8. A cleaning mechanism for applying adhesive to automotive rubber strips according to claim 7, characterized in that, The center points of the arc-shaped cover and the lower pressure column, the center point of the scissor cylinder, the center point of the clamping claw of the first clamping cylinder, and the center point of the clamping claw of the second clamping cylinder coincide with each other.

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