A supporting device for the tailor-welding of a carriage of a forklift truck

Abstract

The application discloses a support device for the tailor welding of a forklift carrier, comprising a base, a positioning bending plate installed on the base and used for positioning an upper plate in the forklift carrier, an outer hinged plate fixing positioning unit and an outer hinged plate movable positioning unit installed on the base and used for positioning an outer hinged plate in the forklift carrier, a plurality of positioning plates, positioning turning plates and cushion block assemblies installed on the base and used for adapting to different models of forklift carriers, a plurality of middle and inner hinged plate positioning units in sliding connection with the base and used for positioning a middle hinged plate and an inner hinged plate in the forklift carrier, and an adjustable clamping assembly in sliding connection with the base and used for clamping the forklift carrier. The application realizes the accurate positioning of each component of the forklift carrier, improves the welding quality, can adapt to the tailor welding of different specifications of carriers, improves the product quality and work efficiency, and reduces the labor intensity of operators.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fork loader, and particularly relates to a supporting device for fork loader bracket tailor welding. BACKGROUND

[0002] In the prior art, when the fork loader bracket is tailor welded, manual tailor welding is adopted on the welding platform without fixture positioning. When the bracket frame is tailor welded, it is difficult to guarantee the size requirement and perpendicularity of the workpiece, thereby affecting the product quality. In addition, the work intensity is high and the efficiency is low due to the heavy workpiece.

[0003] The fork loader bracket is mainly composed of an upper plate, a sealing plate, a cross support plate, a reinforcing plate, an outer hinge plate, a middle hinge plate, an inner hinge plate and a bottom plate, and is a frame type structure. The process requires that the upper plate, the cross support plate, the bottom plate and the middle hinge plate are first line tailor welded, and then the inner and outer hinge plates, the sealing plate and the reinforcing plate are line tailor welded. There are four most commonly used brackets, and the batch of each bracket is small. Therefore, for the brackets of the same modeling style but different size specifications, a universal fixture needs to be developed to realize accurate positioning, improve the welding quality, require the fixture to have a certain flexibility, quickly switch the fixture for different brackets and improve the work efficiency. SUMMARY

[0004] To solve the problems in the prior art, the present application provides a supporting device for fork loader bracket tailor welding, which realizes accurate positioning of each component of the fork loader bracket, improves the welding quality, is suitable for tailor welding of brackets of different specifications, improves the product quality and work efficiency and reduces the labor intensity of the operator.

[0005] To achieve the above object, the technical scheme adopted by the present application is as follows: a supporting device for fork loader bracket tailor welding, comprising: a base; a positioning bending plate installed on the base and used for positioning an upper plate in the fork loader bracket; an outer hinge plate fixed positioning unit and an outer hinge plate movable positioning unit installed on the base and used for positioning an outer hinge plate in the fork loader bracket; a plurality of positioning plates, positioning turn plates and cushion block assemblies installed on the base and used for adapting to different models of fork loader brackets; a plurality of middle and inner hinge plate positioning units in sliding connection with the base and used for positioning a middle hinge plate and an inner hinge plate in the fork loader bracket; and an adjustable clamping assembly in sliding connection with the base and used for clamping the fork loader bracket.

[0006] Further, the outer hinge plate fixed positioning unit comprises: a support installed on the base; a spacer sleeve, a sealing plate one installed on the support; and a door plate in clamping connection with the spacer sleeve.

[0007] Further, the outer hinged plate movable positioning unit comprises: a cylinder support two mounted on the base; a three-axis cylinder mounted on the cylinder support two; a positioning plate two mounted on the output end of the three-axis cylinder; a limiting rod with one end connected with the positioning plate two and the other end slidingly connected with the cylinder support two, and an adjusting sleeve mounted on the other end of the limiting rod.

[0008] Further, the positioning plate comprises: a sliding block three slidingly connected with a guide rail three mounted on the base; a sliding block mounting plate, and a turnover limiting block one mounted on the sliding block mounting plate.

[0009] Further, the positioning plate comprises: a sliding block three slidingly connected with a guide rail three mounted on the base; a sliding block mounting plate, and a turnover limiting block one mounted on the sliding block mounting plate.

[0010] Further, the cushion block assembly comprises: fixed cushion blocks mounted on the base and replaceable cushion blocks slidingly connected with the base; the fixed cushion blocks and the replaceable cushion blocks are used for height positioning of corresponding components in the forklift carriage.

[0011] Further, the inner hinged plate positioning unit comprises: positioning module one, positioning module three, positioning module five and positioning module six with the same configuration; and positioning module two, positioning module four, positioning module seven and positioning module eight with the same configuration; the positioning module one comprises a connecting block one, a middle hinged plate limiting block one and a sealing plate support column one mounted on the connecting block one; the connecting block one is slidingly connected with a guide rail one mounted on the base through a sliding block one; the positioning module two comprises a connecting block two, a middle hinged plate limiting block two and a sealing plate support column two mounted on the connecting block two; the connecting block two is slidingly connected with the guide rail one mounted on the base through the sliding block one.

[0012] Further, the adjustable clamping assembly comprises: a cylinder support one slidingly connected with the base through a sliding block two slidingly connected with a guide rail two mounted on the base; a pressing cylinder and a pressing bolt mounted on the cylinder support one; a pressing plate mounted on the output end of the pressing cylinder; and an adjusting block mounted on the base and clamped with the pressing bolt.

[0013] Further, the control assembly is further provided for controlling the three-axis cylinder in the outer hinged plate movable positioning unit and the pressing cylinder in the adjustable clamping assembly.

[0014] Compared with the prior art, the present application has the beneficial effects that: the present application is installed on the base, the positioning bending plate for positioning the upper plate in the forklift carrier, the outer hinged plate fixing positioning unit and the outer hinged plate movable positioning unit for positioning the outer hinged plate in the forklift carrier, a plurality of positioning plates for adapting to different models of forklift carriers, the positioning turning plate and the cushion block assembly are used, which are in sliding connection with the base, a plurality of middle and inner hinged plate positioning units for positioning the middle hinged plate and the inner hinged plate in the forklift carrier, and the adjustable clamping assembly for clamping the forklift carrier, so that the accurate positioning of each component of the forklift carrier is realized, the welding quality is improved, the splicing welding of different specifications of carriers can be adapted, the product quality and work efficiency are improved, and the labor intensity of the operator is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a forklift carrier in the embodiment of the present application;

[0016] Figure 2 is a whole structural schematic diagram of a support device (including a forklift frame) for splicing and welding of a forklift carrier provided by the embodiment of the present application;

[0017] Figure 3 is a schematic diagram of the relative position relationship of each guide rail assembly in the embodiment of the present application;

[0018] Figure 4 is a structural schematic diagram of the outer hinged plate fixing positioning unit in the embodiment of the present application, wherein (a) is an assembly drawing, and (b) is an explosion view of (a);

[0019] Figure 5 is a structural schematic diagram of the positioning plate in the embodiment of the present application;

[0020] Figure 6 is a structural schematic diagram of the positioning turning plate in the embodiment of the present application;

[0021] Figure 7 is a distribution schematic diagram of the cushion block assembly in the embodiment of the present application;

[0022] Figure 8 is a schematic diagram of the position relationship of each positioning module in the middle and inner hinged plate positioning unit in the embodiment of the present application;

[0023] Figure 9 is Figure 8 a structural schematic diagram of the positioning module one in the middle and inner hinged plate positioning unit;

[0024] Figure 10 is Figure 8 a structural schematic diagram of the positioning module two in the middle and inner hinged plate positioning unit;

[0025] Figure 11 is a structural schematic diagram of the adjustable clamping assembly in the embodiment of the present application;

[0026] Figure 12 is Figure 11 is a structural schematic view of a cylinder support one in the embodiment of the present application;

[0027] Figure 13 is a structural schematic view of an outer hinged plate movable positioning unit in the embodiment of the present application;

[0028] Figure 14 is Figure 13 is a structural schematic view of a cylinder support two in the embodiment of the present application;

[0029] Figure 15 is a whole structural schematic view of a support device (not including a forklift frame) for a forklift carriage tailor-welding provided by the embodiment of the present application;

[0030] In the figure: 1, upper plate; 2, sealing plate; 3, cross bracing plate; 4, reinforcing plate; 5, outer hinged plate; 6, middle hinged plate; 7, inner hinged plate; 8, bottom plate; 9, base; 10, slide rail assembly; 101, guide rail one; 102, guide rail two; 103, guide rail three; 104, slide block one; 105, limiting block; 11, positioning bent plate; 12, outer hinged plate fixed positioning unit; 121, support; 122, door plate; 123, spacer sleeve; 124, sealing plate one; 13, positioning plate; 131, slide block three; 132, slide block mounting plate; 133, stop block; 134, first flip limiting block; 14, positioning flip plate; 141, flip plate; 142, fixed block; 143, connecting pin; 15, cushion block assembly; 151, outer hinged plate cushion block; 152, reinforcing plate cushion block; 153, bottom plate cushion block; 154, cross bracing plate cushion block one; 155, cross bracing plate cushion block two; 156, upper plate cushion block; 16, middle and inner hinged plate positioning unit; 161, first positioning module; 1611, first sealing plate support column; 1612, middle hinged plate limiting block one; 1613, first connecting block; 162, second positioning module; 1621, second sealing plate support column; 1622, middle hinged plate limiting block two; 1623, second connecting block; 163, third positioning module; 164, fourth positioning module; 165, fifth positioning module; 166, sixth positioning module; 167, seventh positioning module; 168, eighth positioning module; 169, flip limiting block; 17, adjustable jacking assembly; 171, cylinder support one; 1711, upper cover plate; 1712, cylinder mounting seat; 1713, vertical plate one; 1714, base plate one; 172, pressing cylinder; 173, pressing plate; 174, pressing bolt; 175, slide block two; 176, adjusting block; 18, outer hinged plate movable positioning unit; 181, cylinder support two; 1811, vertical plate two; 1812, rib plate; 1813, base plate two; 182, three-axis cylinder; 183, adjusting sleeve; 184, limiting rod; 185, second positioning plate; 19, control assembly. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0032] like Figures 1-15 As shown, a support device for welding forklift carriers includes: a base 9; a positioning bend 11 mounted on the base 9 for positioning the upper plate 1 in the forklift carrier; an outer hinge plate fixing positioning unit 12 and an outer hinge plate movable positioning unit 18 mounted on the base 9 for positioning the outer hinge plate 5 in the forklift carrier; several positioning plates 13, positioning flaps 14 and pad assemblies 15 mounted on the base 9 for adapting to different models of forklift carriers; several middle and inner hinge plate positioning units 16 slidably connected to the base 9 for positioning the middle hinge plate 6 and inner hinge plate 7 in the forklift carrier; and an adjustable clamping assembly 17 slidably connected to the base 9 for clamping the forklift carrier.

[0033] like Figure 1 As shown, the forklift carrier in this invention is a frame structure composed of an upper plate 1, a sealing plate 2, a cross brace plate 3, a reinforcing plate 4, an outer hinge plate 5, a middle hinge plate 6, an inner hinge plate 7, and a bottom plate 8, which are sequentially spliced ​​together.

[0034] like Figure 2 , Figure 3 As shown, the present invention also includes a slide rail assembly 10, which includes multiple guide rails disposed on the base 9, including guide rail one 101, guide rail two 102, and guide rail three 103, etc., with limit blocks 105 disposed at both ends of each guide rail. When slider one 104 slides on guide rail one 101, the limit blocks 105 are used to limit the extreme position of slider one 104 on guide rail one 101. Each guide rail and limit block 105 is mounted on the base 9 by bolts.

[0035] like Figure 2 , Figure 4 As shown, the external hinge plate fixing and positioning unit 12 of the present invention includes: a support 121 that is bolted to the base 9; a spacer 123 and a sealing plate 124 that are bolted to the support 121; and a door panel 122 that is engaged with the spacer 123. When different slots on the door panel 122 are engaged with the spacer 123, they are suitable for positioning external hinge plates 5 of different specifications.

[0036] like Figure 2 , Figure 5As shown in the drawings, the positioning plate 13 in the present application comprises: a sliding block three 131 slidingly connected with the guide rail three 103 installed on the base 9; a sliding block mounting plate 132, a flip limiting block one 134 installed on the sliding block mounting plate 132; and a stopper 133 installed on the sliding block mounting plate 132. The positioning plate 13 is used for positioning corresponding components such as the cross brace plate 6. When the stopper 133 slides along the guide rail three 103 to a set position, the position of the stopper 133 is locked by the flip limiting block one 134, so that the present application can be applied to the tailor-welding of the carriers of different specifications of the forklifts.

[0037] As shown in the drawings, Figure 2 , Figure 6 As shown in the drawings, the positioning plate 13 in the present application comprises: a sliding block three 131 slidingly connected with the guide rail three 103 installed on the base 9; a sliding block mounting plate 132, a flip limiting block one 134 installed on the sliding block mounting plate 132; and a stopper 133 installed on the sliding block mounting plate 132. The positioning plate 13 is used for positioning corresponding components such as the cross brace plate 6. When the stopper 133 slides along the guide rail three 103 to a set position, the position of the stopper 133 is locked by the flip limiting block one 134, so that the present application can be applied to the tailor-welding of the carriers of different specifications of the forklifts.

[0038] As shown in the drawings, Figure 2 , Figure 7 As shown in the drawings, the positioning plate 13 in the present application comprises: a sliding block three 131 slidingly connected with the guide rail three 103 installed on the base 9; a sliding block mounting plate 132, a flip limiting block one 134 installed on the sliding block mounting plate 132; and a stopper 133 installed on the sliding block mounting plate 132. The positioning plate 13 is used for positioning corresponding components such as the cross brace plate 6. When the stopper 133 slides along the guide rail three 103 to a set position, the position of the stopper 133 is locked by the flip limiting block one 134, so that the present application can be applied to the tailor-welding of the carriers of different specifications of the forklifts.

[0039] As shown in the drawings, Figure 2 , Figures 8-10 As shown in the drawings, the positioning plate 13 in the present application comprises: a sliding block three 131 slidingly connected with the guide rail three 103 installed on the base 9; a sliding block mounting plate 132, a flip limiting block one 134 installed on the sliding block mounting plate 132; and a stopper 133 installed on the sliding block mounting plate 132. The positioning plate 13 is used for positioning corresponding components such as the cross brace plate 6. When the stopper 133 slides along the guide rail three 103 to a set position, the position of the stopper 133 is locked by the flip limiting block one 134, so that the present application can be applied to the tailor-welding of the carriers of different specifications of the forklifts.

[0040] The positioning module one 161 comprises a connecting block one 1613, a middle hinge plate limiting block one 1612 and an end plate support column one 1611 installed on the connecting block one 1613. The connecting block one 1613 is slidingly connected with the guide rail one 101 installed on the base 9 through a sliding block one 104. When the connecting block one 1613 slides along the guide rail one 101 to a set position, it is fixed by a flip limiting block 169.

[0041] Positioning module two 162 includes connecting block two 1623 and mounting in connecting block two 1623 Middle hinge plate limiting block two 1622, sealing plate support column two 1621;Connecting block two 1623 is slidably connected with the guide rail one 101 mounted on the base 9 through the slider one 104, and is fixed through the turnover limiting block 169.

[0042] As Figure 2 、 Figures 11-12 Indicated, the adjustable top assembly 17 in the application includes: cylinder support one 171, cylinder support one 171 is slidably connected with the base 9 through the slider two 175 slidably connected with the guide rail two 102 mounted on the base 9;Mounting on the cylinder support one 171 pressing cylinder 172 and pressing bolt 174;Pressing plate 173 mounted on the output end of pressing cylinder 172;Mounting on the base 9 and with the pressing bolt 174 clamping adjusting block 176.When the cylinder support one 171 is slid along the guide rail two 102 to the set position, the pressing bolt 174 is slid along the long circular hole on the cylinder support one 171 to the corresponding U-shaped groove on the adjusting block 176, the cylinder support one 171 is locked relative to the adjusting block 176, and the preliminary adjustment of the cylinder in different positions is realized.

[0043] Cylinder support one 171 is a frame structure welded by upper cover plate 1711, cylinder mounting seat 1712, vertical plate one 1713 and base plate one 1714.

[0044] As Figure 2 、 Figures 13-14 Indicated, the outer hinge plate movable positioning unit 18 in the application includes: cylinder support two 181 mounted on the base 9;Three-axis cylinder 182 mounted on the cylinder support two 181;Positioning plate two 185 mounted on the output end of three-axis cylinder 182;Limiting rod 184 connected with the positioning plate two 185 at one end and slidably connected with the cylinder support two 181 at the other end, the other end of the limiting rod 184 is provided with adjusting sleeve 183.Positioning of the positioning plate two 185 is realized through the limiting rod 184, and positioning of another position of the positioning plate two 185 is realized through the adjusting sleeve 183.

[0045] Cylinder support two 181 is a frame structure welded by vertical plate two 1811, web plate 1812 and base plate two 1813.

[0046] The control assembly 19 mounted on the base 9 is used for controlling the three-axis cylinder 182 in the outer hinge plate movable positioning unit 18 and the pressing cylinder 172 in the adjustable top assembly 17.

[0047] Next, taking a five-ton forklift bracket as an example, the use method of the support device for forklift bracket welding according to the application is further described.

[0048] Positioning modules 161, 162, 163, and 164 in the sliding inner hinge plate positioning unit 16 ensure that the position is in the middle of the sliding hinge plate positioning unit 16. Figure 8 At the indicated position, rotate the flip-type limit block 169 to lock the various positioning devices, and slide the remaining positioning devices to the front end of the slide rail. Adjust each pad in the pad assembly 15 to accommodate a five-ton product. Install the upper plate 1 in the forklift carrier so that it is close to the corresponding pad in the pad assembly 15, the positioning bend 11 (the positioning bend 11 has mutually perpendicular planes for positioning the upper plate 1), and the positioning flip plate 14. Install the middle hinge plate 6 and the cross brace plate 3. The lower part of the middle hinge plate 6 is supported by the corresponding pad in the pad assembly 15, and its left and right positions are defined by the middle inner hinge plate positioning unit and the positioning flip plate 14. The position of the cross brace plate 3 is defined by the grooves of the upper plate 1 and the middle hinge plate 6. Adjust the position of the door panel 122 in the outer hinge plate fixing positioning unit 12 so that it is in the correct position. Figure 4 The position is determined by manipulating the control assembly 19, which extends the three-axis cylinder 182 of the outer hinge plate movable positioning unit 18 outwards. The cylinder stops when the limit rod 184 touches the cylinder support 181. Then, the outer hinge plate 5, inner hinge plate 7, sealing plate 2, reinforcing plate 4, and base plate 8 are installed. The control assembly 19 is then manipulated to extend the clamping cylinder 172 of the adjustable clamping assembly 17 outwards, causing the pressure plate 173 to clamp the forklift carrier. After all the components of the forklift carrier are installed, spot welding is performed. After welding is completed, the control assembly 19 is manipulated to retract the cylinders in the outer hinge plate movable positioning unit 18 and the adjustable clamping assembly 17 inwards. The door plate 122 in the outer hinge plate fixed positioning unit 12 is adjusted so that the spacer 123 is in the right groove position, and the carrier is removed from the support device.

[0049] This invention uses a positioning bend plate 11 to position the front of the forklift carrier, an outer hinge plate fixed positioning unit 12 to position the left side of the forklift carrier, an outer hinge plate movable positioning unit 18 to position the right side of the forklift carrier, an inner hinge plate positioning unit 16 to position the inner hinge plate, and an adjustable clamping assembly 17 to clamp the forklift carrier from the rear. This controls the workpiece dimensions and geometric tolerances, improving workpiece quality.

[0050] The present invention can adapt to the positioning requirements of different specifications of forklift carriers by adjusting the position of the second positioning plate 185, by loading and unloading the adjusting sleeve 183, and by sliding the positioning modules of the inner hinge plate positioning unit 16 on the slide rail assembly 10.

[0051] This invention has good versatility and a certain degree of flexibility, and can be applied to various forklift carriers in the same series, reducing the time for changing tooling, improving work efficiency, and reducing labor intensity.

[0052] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A support device for the tailor welding of a fork carriage of a forklift, characterized in that, It comprises: a base (9); a positioning bent plate (11) installed on the base (9) for positioning the upper plate (1) in the forklift carrier; an outer hinged plate fixed positioning unit (12) and an outer hinged plate movable positioning unit (18) installed on the base (9) for positioning the outer hinged plate (5) in the forklift carrier; a plurality of positioning plates (13), positioning turn plates (14) and cushion block assemblies (15) installed on the base (9) for adapting to different models of forklift carriers; a plurality of middle and inner hinged plate positioning units (16) in sliding connection with the base (9) for positioning the middle hinged plate (6) and the inner hinged plate (7) in the forklift carrier; an adjustable clamping assembly (17) in sliding connection with the base (9) for clamping the forklift carrier; The positioning turn plate (14) comprises: a fixed block (142) installed on the base (9); a turn plate (141) hinged to the fixed block (142) through a connecting pin (143); The forklift carrier is a frame structure composed of an upper plate (1), an enclosing plate (2), a cross support plate (3), a reinforcing plate (4), an outer hinged plate (5), a middle hinged plate (6), an inner hinged plate (7) and a bottom plate (8).

2. The support device for the butt welding of a fork-lift carriage according to claim 1, characterized in that, The outer hinged plate fixed positioning unit (12) comprises: a support (121) installed on the base (9); a spacer sleeve (123), an enclosing plate I (124) installed on the support (121); a door plate (122) in clamping connection with the spacer sleeve (123).

3. The support device for the butt welding of a fork-lift carriage according to claim 1, characterized in that, The outer hinged plate movable positioning unit (18) comprises: a second air cylinder support (181) installed on the base (9); a three-axis air cylinder (182) installed on the second air cylinder support (181); a second positioning plate (185) installed on the output end of the three-axis air cylinder (182); a limiting rod (184) in sliding connection with the second air cylinder support (181) at one end and connected with the second positioning plate (185) at the other end, and an adjusting sleeve (183) is installed at the other end of the limiting rod (184).

4. The support device for the butt welding of a fork-lift carriage according to claim 1, characterized in that, The positioning plate (13) comprises: a sliding block three (131) in sliding connection with a guide rail three (103) installed on the base (9); a sliding block mounting plate (132), a flip limiting block I (134) installed on the sliding block three (131); a stop block (133) installed on the sliding block mounting plate (132).

5. The support device for the spliced welding of a forklift carriage according to claim 1, characterized in that, The cushion block assembly (15) comprises: fixed cushion blocks installed on the base (9) and replaceable cushion blocks in sliding connection with the base (9); the fixed cushion blocks and the replaceable cushion blocks are used for height positioning of corresponding components in the forklift carrier.

6. The support apparatus for the butt welding of a forklift carriage according to claim 1, characterized in that, The middle and inner hinged plate positioning unit (16) comprises: positioning module one (161), positioning module three (163), positioning module five (165) and positioning module six (166) with the same configuration; and positioning module two (162), positioning module four (164), positioning module seven (167) and positioning module eight (168) with the same configuration. The positioning module one (161) comprises a connecting block one (1613) and a middle hinged plate limiting block one (1612) and an enclosing plate support column one (1611) installed on the connecting block one (1613); the connecting block one (1613) is slidably connected with a guide rail one (101) installed on the base (9) through a sliding block one (104); The positioning module two (162) comprises a connecting block two (1623) and a middle hinged plate limiting block two (1622) and an enclosing plate support column two (1621) installed on the connecting block two (1623); the connecting block two (1623) is slidably connected with a guide rail one (101) installed on the base (9) through a sliding block one (104).

7. The support apparatus for the mule carriage tailor welding according to claim 1, wherein The adjustable clamping assembly (17) comprises: A cylinder support one (171) slidably connected with the base (9) through a sliding block two (175) slidably connected with a guide rail two (102) installed on the base (9); A pressing cylinder (172) and a pressing bolt (174) installed on the cylinder support one (171); A pressing plate (173) installed on the output end of the pressing cylinder (172); An adjusting block (176) installed on the base (9) and clamped with the pressing bolt (174).

8. The support device for the spliced welding of the carriage of a forklift according to claim 3 or 7, characterized in that, Further comprising a control assembly (19) for controlling the three-axis cylinder (182) in the outer hinged plate movable positioning unit (18) and the pressing cylinder (172) in the adjustable clamping assembly (17).

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