Dispensing equipment for cooling fin of computer mainboard

Abstract

The utility model discloses computer mainboard radiating fin dispensing equipment, which relates to the technical field of dispensing equipment and comprises a conveying belt mechanism, a fixing frame is slidably connected to the left side and the right side of the conveying belt mechanism, a plurality of handle mechanisms are fixedly connected above the conveying belt mechanism, and a clamping plate mechanism is arranged above the handle mechanisms. A rotating mechanism is arranged above the front side of the right side of the conveying belt mechanism, and the front portion of the right side of the fixing frame is in threaded connection with the lower portion of the rear side of the rotating mechanism. After a handle rod in the handle mechanism is rotated backwards to enable an S-shaped double-semicircle splicing block to slide and open square clamping blocks I on the two sides in the clamping plate mechanism, the clamping plate assembly fixes the two sides of a cooling fin, and the handle rod is rotated to clamp the cooling fin; the cooling fins of different sizes can be clamped and prevented from inclining in the placing process, through cooperation of the rotating mechanism and the fixing frame, the dispensing mechanism is driven to ascend and descend, and adjustment is conducted according to the actual height of the cooling fins.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of dispensing equipment technical field, specifically to a kind of computer mainboard cooling fin dispensing equipment. BACKGROUND

[0002] With the rapid development of electronic technology, the performance of computer is continuously improved, and the heat dissipation problem of computer mainboard, as one of the core components of computer, is increasingly concerned. The role of computer mainboard cooling fin is to quickly dissipate the heat on the mainboard to ensure the normal operation of the mainboard.

[0003] The dispensing equipment on the market cannot be adjusted according to the actual height of the cooling fin, ensuring that various different specifications of cooling fin can be accurately dispensed, and the clamping device of the cooling fin cannot be clamped according to the cooling fin of different sizes, and the clamping device will be inclined when clamping. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of computer mainboard cooling fin dispensing equipment, effectively solve that dispensing equipment cannot be adjusted according to the actual height of the cooling fin, and clamping device cannot be adapted to the cooling fin of different sizes, and the clamping device will be inclined when clamping.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] A kind of computer mainboard cooling fin dispensing equipment, including conveying belt mechanism, the conveying belt mechanism left and right side slidingly connected with fixed frame, the conveying belt mechanism upper side is fixedly connected with several mobile phone mechanisms, the mobile phone mechanism upper side is provided with clamping plate mechanism, the fixed frame middle part lower side rear side is fixedly connected with dispensing mechanism, the conveying belt mechanism right side front side upper side is provided with rotating mechanism, the fixed frame right side front side and rotating mechanism rear side lower side are screw-connected.

[0007] The further improvement of the technical scheme of the utility model is that: the conveying belt mechanism includes two square plates one, the middle part of the front and rear side of the two square plates one is rotatably connected with rotating column, the outer wall of the two rotating columns on the front and rear side is frictionally rotatably connected with conveying belt, the two rotating columns on the left and right sides pass through the far side of the square plate one to the outside, the middle part of the far side of the two square plates one is fixedly connected with concave block assembly, the right side of the square plate one is fixedly connected with fixed seat two on the right side front side upper side, the right end of the rotating column on the rear side is fixedly connected with motor one, the right side of the square plate one is fixedly connected with fixed seat one on the right side near motor one lower side.

[0008] The further improvement of the utility model technical scheme lies in that the concave block assembly comprises two concave blocks one, square grooves one are formed in the left and right sides of the middle part of one side of the concave block one facing the square plate one, a circular groove one is formed in the lower side of the square groove one on the right front side and penetrates to the upper side of the concave block one, and the opposite sides of the two concave blocks one are fixedly connected with the sides away from the two square plates one.

[0009] The further improvement of the utility model technical scheme lies in that the fixing frame comprises a concave block one, L-shaped blocks one are fixedly connected with the front and back sides of the lower sides of the left and right sides of the concave block one, a square fixing plate is fixedly connected with the inner wall of the middle part of the concave block one, a threaded hole penetrating to the outside below is formed in the upper side of the L-shaped block one on the right front side, and the outer wall of the L-shaped block one is slidably connected with the inner wall of the square groove one.

[0010] The further improvement of the utility model technical scheme lies in that the glue dispensing mechanism comprises a glue dispensing cylinder, a fixing plate is fixedly connected with the front side of the glue dispensing cylinder, a glue barrel is fixedly connected with the rear side of the glue dispensing cylinder, a glue head is fixedly connected with the lower side of the glue dispensing cylinder, and the front side of the fixing plate is fixedly connected with the lower side of the rear side of the square fixing plate.

[0011] The further improvement of the utility model technical scheme lies in that the rotating mechanism comprises a threaded rod one, a toothed gear one is fixedly connected with the upper side of the threaded rod one, a meshing chain is meshingly connected with the outer wall of the toothed gear one, a meshing wheel two is meshingly connected with the front side of the inner wall of the meshing chain, a motor two is fixedly connected with the lower side of the meshing wheel two, the lower side of the motor two is fixedly connected with the upper side of a fixing base two, the outer wall of the threaded rod one is threadedly connected with the inner wall of the threaded hole, and the outer wall of the threaded rod one is rotatably connected with the inner wall of the circular groove one.

[0012] The further improvement of the utility model technical scheme lies in that the handle mechanism comprises a square fixing block, T-shaped grooves are formed in the front and back sides of the upper side of the square fixing block, a square groove two is formed in the front side of the upper side of the square fixing block, a circular groove two penetrating to the lower side of the square groove two is formed in the middle part of the upper side of the square fixing block, a rotating block assembly is rotatably connected with the inner wall of the circular groove two, and the lower side of the square fixing block is fixedly connected with the upper side of a conveying belt.

[0013] The further improvement of the utility model technical scheme lies in that the rotating block assembly comprises a cylinder one, an S-shaped double-semicircle splicing block is fixedly connected with the upper side of the cylinder one, a handle rod is fixedly connected with the front right side of the cylinder one, the outer wall of the handle rod is slidably connected with the inner wall of the square groove two, and the S-shaped double-semicircle splicing block is slidably connected with the upper side of the square fixing block.

[0014] The further improvement in the technical scheme of the utility model lies in that the clamping plate assembly comprises a concave clamping block one, a handle is fixedly connected above the concave clamping block one, L-shaped sliding blocks two are fixedly connected to the front and rear sides of the side of the concave clamping block one far away from each other, spring two is fixedly connected below the L-shaped sliding blocks two, the spring two is fixedly connected with the inner wall of the L-shaped recess below, and the outer wall of the L-shaped sliding blocks two is slidably connected with the inner wall of the L-shaped recess.

[0015] The further improvement in the technical scheme of the utility model lies in that the clamping plate assembly comprises a concave clamping block one, a handle is fixedly connected above the concave clamping block one, L-shaped sliding blocks two are fixedly connected to the front and rear sides of the side of the concave clamping block one far away from each other, spring two is fixedly connected below the L-shaped sliding blocks two, the spring two is fixedly connected with the inner wall of the L-shaped recess below, and the outer wall of the L-shaped sliding blocks two is slidably connected with the inner wall of the L-shaped recess.

[0016] Thanks to the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0017] 1. The motor two drives the meshing wheel two to mesh and drive the meshing chain, the mesh gear one and the threaded rod one, so that the threaded rod one drives the inverted concave block one to make the glue dispensing mechanism ascend and descend, and the actual height of the heat dissipation fin is adjusted to ensure that the glue dispensing operation can be accurately performed on heat dissipation fins of various specifications.

[0018] 2. The two sides of the square clamping block one are slidably opened by grabbing the rotating block assembly and rotating, different sizes of conventional heat dissipation fins can be placed and clamped, and the heat dissipation fins can be clamped after the clamping plate assembly is moved upward to prevent tilting during placement. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a sectional structure schematic view of the utility model;

[0021] Figure 3 It is a conveying belt mechanism structure schematic view of the utility model;

[0022] Figure 4The utility model discloses a fixed frame structure schematic diagram;

[0023] Figure 5 The utility model discloses a point gum mechanism structure schematic diagram;

[0024] Figure 6 The utility model discloses a rotating mechanism structure schematic diagram;

[0025] Figure 7 The utility model discloses a handle mechanism structure schematic diagram;

[0026] Figure 8 The utility model discloses a clamping plate mechanism structure schematic diagram;

[0027] Figure 9 The utility model discloses a clamping plate mechanism structure schematic diagram.

[0028] In the drawing: 1, conveying belt mechanism, 2, fixed frame, 3, point gum mechanism, 4, rotating mechanism, 5, handle mechanism, 6, clamping plate mechanism, 11, square board one, 12, rotating column, 13, conveying belt, 14, motor one, 15, fixed seat one, 16, fixed seat two, 17, concave block assembly, 171, concave block one, 172, circular recess one, 173, square recess one, 21, inverted concave block one, 22, square fixed plate, 23, L-shaped block one, 24, screw hole, 31, point gum cylinder, 32, fixed plate, 33, point gum head, 34, glue barrel, 41, threaded rod one, 42, cogwheel one, 43, meshing chain, 44, meshing wheel two, 45, motor two, 51, square fixed block, 52, square recess two, 53, T-shaped recess, 54, circular recess two, 55, rotating block assembly, 551, S-shaped double half circle splicing block, 552, cylinder one, 553, handle rod, 61, square clamping block one, 62, T-shaped sliding block, 63, spring assembly, 64, clamping plate assembly, 65, fixed plate two, 66, L-shaped recess, 631, fixed column two, 632, fixed ring, 633, circular fixed block, 634, spring, 641, concave clamping block one, 642, handle, 643, L-shaped sliding block two, 644, spring two. DETAILED DESCRIPTION

[0029] In order to make the technical means, the creation features, the purposes and the effects of the utility model easy to understand, the following further describes the utility model in connection with the specific implementation:

[0030] For example, Figures 1-2The utility model provides a computer mainboard fin point gum equipment, including conveying belt mechanism 1, the left and right sides of conveying belt mechanism 1 are slidably connected with fixed frame 2, and a plurality of handle mechanisms 5 are fixedly connected above conveying belt mechanism 1, and the upper portion of handle mechanism 5 is provided with clamping plate mechanism 6, and the rear lower portion of the middle part of fixed frame 2 is fixedly connected with point gum mechanism 3, and the upper portion of the right front side of conveying belt mechanism 1 is provided with rotating mechanism 4, and the right front side of fixed frame 2 is screw connected with the lower rear side of rotating mechanism 4.

[0031] By rotating after holding the handle rod 553 in handle mechanism 5, make S-shaped double half circle splicing block 551 slide and prop open two side square clamping blocks one 61 in clamping plate mechanism 6, hold clamping plate assembly 64 and move upwards to place the fin on fixed plate two 65, then loosen the fixation on the two sides of the fin, rotate handle rod 553 to clamp the fin, different size conventional fins can be placed and clamped, and the inclination during placing is prevented, motor two 45 in rotating mechanism 4 drives threaded rod one 41 to move in screw thread with inverted recess block one 21 in fixed frame 2, so as to drive point gum mechanism 3 to ascend and descend, the actual height of the fin is adjusted, and the point gum operation on various different specifications of fins can be accurately ensured.

[0032] As Figure 3 The utility model provides a technical scheme: conveying belt mechanism 1 includes two square plates one 11, and the middle part of the front and rear sides of two square plates one 11 is rotatably connected with rotating column 12, and the outer wall of two rotating columns 12 is frictionally rotatably connected with conveying belt 13, and the left and right two rotating columns 12 pass through the one side of square plate one 11 far away from each other to the outside, and the middle part of the one side of two square plates one 11 far away from each other is fixedly connected with recess block assembly 17, and the upper portion of the right front side of right square plate one 11 is fixedly connected with fixed seat two 16, and the right end of rear rotating column 12 is fixedly connected with motor one 14, and the lower portion of right square plate one 11 right side close to motor one 14 is fixedly connected with fixed seat one 15, and recess block assembly 17 includes two recess blocks one 171, and the middle part of the one side of recess block one 171 facing square plate one 11 is provided with square recess one 173 on the left and right sides, and the lower portion of right front side square recess one 173 is provided with circular recess one 172 penetrating to the upper portion of recess block one 171, and the opposite surface of two recess blocks one 171 is fixedly connected with the one side of two square plates one 11 far away from each other.

[0033] As Figures 4-6The utility model provides a technical scheme: fixed frame 2 includes inverted concave block one 21, the front and back side of inverted concave block one 21 left and right side below all are fixedly connected with L shaped piece one 23, the inside wall of inverted concave block one 21 middle part is fixedly connected with square fixed plate 22, the right front side L shaped piece one 23 top is provided with the threaded hole 24 that goes through to the outside below, the outer wall of L shaped piece one 23 is connected with the inside wall of square recess one 173 slidingly, point gum mechanism 3 includes point gum cylinder 31, point gum cylinder 31 front side fixedly connected with fixed plate 32, point gum cylinder 31 rear side fixedly connected with glue barrel 34, point gum cylinder 31 below fixedly connected with point gum head 33, the front side of fixed plate 32 is fixedly connected with the rear side below of square fixed plate 22, rotating mechanism 4 includes threaded rod one 41, threaded rod one 41 top fixedly connected with gear one 42, the outer wall of gear one 42 is connected with meshing chain 43, the inside wall of meshing chain 43 front side is connected with meshing wheel two 44, meshing wheel two 44 below fixedly connected with motor two 45, motor two 45 below with fixed seat two 16 top fixedly connected, the outer wall of threaded rod one 41 is connected with the inside wall of threaded hole 24 threadedly, the outer wall of threaded rod one 41 is connected with the inside wall of circular recess one 172 rotationally.

[0034] Rotating mechanism 4 makes fixed frame 2 and point gum mechanism 3 lift, when using, through motor two 45 output end drive meshing wheel two 44, make it drive meshing chain 43, gear one 42, make threaded rod one 41 rotate through thread drive threaded hole 24, inverted concave block one 21 rear, square fixed plate 22 drive fixed plate 32, point gum cylinder 31, glue barrel 34 lift, according to the actual height of fin, adjust, ensure that can accurately to various different specifications of fin point gum operation.

[0035] As Figures 7-9The utility model provides a technical scheme: the mobile phone constructs 5 includes square fixed block 51, is equipped with T shaped recess 53 on square fixed block 51 upper front and back sides, is equipped with square recess two 52 on square fixed block 51 front upper side, is equipped with circular recess two 54 that penetrates to square recess two 52 below on square fixed block 51 upper middle part, rotating block subassembly 55 is rotatively connected in circular recess two 54 inner wall, square fixed block 51 below and the upper fixed connection of conveyer belt 13, rotating block subassembly 55 includes cylinder one 552, cylinder one 552 upper fixed connection has S shaped double half circle splicing block 551, cylinder one 552 front right side fixed connection has handle bar 553, cylinder one 552 outer wall and circular recess two 54 inner wall rotatively connected, handle bar 553 outer wall and square recess two 52 inner wall slidingly connected, S shaped double half circle splicing block 551 below and square fixed block 51 upper slidingly connected, the clamping plate mechanism 6 includes two square clamping blocks one 61, square clamping block one 61 below front side rear all fixed connection has T shaped sliding block 62, square clamping block one 61 front and back sides middle part all fixed connection has spring subassembly 63, two square clamping blocks one 61 opposite surface below and S shaped double half circle splicing block 551 upper position all fixed connection has fixed plate two 65, two square clamping blocks one 61 opposite surface front and back sides all are equipped with L shaped recess 66, L shaped recess 66 inner wall slidingly connected has clamping plate subassembly 64, T shaped sliding block 62 outer wall and T shaped recess 53 inner wall slidingly connected, spring subassembly 63 includes four fixed column two 631, and fixed column two 631 away from the outer wall of square clamping block one 61 fixed connection has fixed ring 632, and front and back sides fixed ring 632 opposite surface all fixed connection has circular fixed block 633, and front and back sides circular fixed block 633 opposite surface all fixed connection has spring 634, and left and right side fixed column two 631 opposite surface and the middle part of the face that square clamping block one 61 is far away from one side fixed connection, clamping plate subassembly 64 includes concave clamping block one 641, and concave clamping block one 641 upper fixed connection has handle 642, and left and right side concave clamping block one 641 far away from one side front and back sides all fixed connection has L shaped sliding block two 643, and L shaped sliding block two 643 below fixed connection has spring two 644, and spring two 644 below and L shaped recess 66 inner wall below fixed connection, and L shaped sliding block two 643 outer wall and L shaped recess 66 inner wall slidingly connected.

[0036] The handle mechanism 5 and the clamping plate mechanism 6 can clamp different heat dissipation fins and prevent them from tilting when placed, and when in use, the handle rod 553 is gripped and rotated, the cylinder 552 drives the S-shaped double-semicircle splicing block 551 to rotate, the S-shaped double-semicircle splicing block 551 slides against the opposite side of the two side square clamping blocks 61, the two side square clamping blocks 61 are stretched, the L-shaped sliding block 643 is gripped and moved upward, the spring 644 is stretched, the heat dissipation fin is placed on the fixed plate 65, the handle 642 is released, the two side surfaces of the heat dissipation fin are clamped, the two side square clamping blocks 61 are moved to the middle by the spring 634, and the heat dissipation fin is clamped.

[0037] The working principle of the dispensing equipment is described as follows: the rotating mechanism 4 drives the fixed frame 2 and the dispensing mechanism 3 to ascend and descend, the meshing wheel 44 is driven by the motor 45 to drive the meshing chain 43 and the mesh gear 42, the threaded rod 41 is rotated to drive the threaded hole 24 and the inverted recess block 21, the square fixed plate 22 drives the fixed plate 32, the dispensing cylinder 31 and the glue barrel 34 to ascend and descend, the actual height of the heat dissipation fin is adjusted, and the dispensing operation on heat dissipation fins of various specifications can be accurately ensured.

[0038] The handle mechanism 5 and the clamping plate mechanism 6 can clamp different heat dissipation fins and prevent them from tilting when placed, and when in use, the handle rod 553 is gripped and rotated, the cylinder 552 drives the S-shaped double-semicircle splicing block 551 to rotate, the S-shaped double-semicircle splicing block 551 slides against the opposite side of the two side square clamping blocks 61, the two side square clamping blocks 61 are stretched, the L-shaped sliding block 643 is gripped and moved upward, the spring 644 is stretched, the heat dissipation fin is placed on the fixed plate 65, the handle 642 is released, the two side surfaces of the heat dissipation fin are clamped, the two side square clamping blocks 61 are moved to the middle by the spring 634, and the heat dissipation fin is clamped, the above can clamp different sizes of conventional heat dissipation fins and clamp the two sides of the heat dissipation fin to prevent tilting during placement.

[0039] The above is a general description of the present application, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, without departing from the spirit of the present application, the modifications or improvements are within the scope of the present application.

Claims

1. A computer mainboard fin dispensing equipment, comprising a conveying belt mechanism (1), characterized in that: The conveying belt mechanism (1) is slidably connected with the fixing frame (2) on the left and right sides, a plurality of mobile phone mechanisms (5) are fixedly connected above the conveying belt mechanism (1), the clamping plate mechanism (6) is arranged above the mobile phone mechanism (5), the point gluing mechanism (3) is fixedly connected below the rear side of the middle part of the fixing frame (2), the rotating mechanism (4) is arranged above the front side of the right side of the conveying belt mechanism (1), and the fixing frame (2) is screwedly connected with the rear side and the lower side of the rotating mechanism (4) on the right side and the front side.

2. The computer mainboard fin dispensing equipment according to claim 1, characterized in that: The conveying belt mechanism (1) comprises two square plates (11), rotating columns (12) are rotatably connected to the middle parts of the front and rear sides of the two square plates (11), conveying belts (13) are frictionally rotatably connected to the outer walls of the two rotating columns (12), the rotating columns (12) are arranged to be away from each other through the outer walls of the two rotating columns (12), recessed block assemblies (17) are fixedly connected to the middle parts of the two square plates (11) that are away from each other, a fixed seat two (16) is fixedly connected to the upper side of the right side and the front side of the right square plate (11), a motor one (14) is fixedly connected to the right end of the rear rotating column (12), and a fixed seat one (15) is fixedly connected to the lower side of the right square plate (11) and close to the motor one (14).

3. The computer mainboard fin dispensing equipment according to claim 2, characterized in that: The recessed block assembly (17) comprises two recessed blocks (171), square recesses (173) are formed in the middle parts of the left and right sides of the side of the recessed block (171) that faces the square plate (11), a circular recess (172) is formed in the lower side of the right side and the front side of the square recess (173) and extends to the upper side of the recessed block (171), and the opposite sides of the two recessed blocks (171) are fixedly connected to the two square plates (11) that are away from each other.

4. The computer mainboard fin dispensing equipment according to claim 3, characterized in that: The fixing frame (2) comprises a recessed block (21), L-shaped blocks (23) are fixedly connected to the front and rear sides of the lower sides of the left and right sides of the recessed block (21), a square fixed plate (22) is fixedly connected to the middle inner wall of the recessed block (21), screw holes (24) are formed in the upper side of the L-shaped block (23) and extend to the lower side and the outside, and the outer wall of the L-shaped block (23) is slidably connected with the inner wall of the square recess (173).

5. The computer mainboard fin dispensing equipment according to claim 4, characterized in that: The point gluing mechanism (3) comprises a point gluing cylinder (31), a fixed plate (32) is fixedly connected to the front side of the point gluing cylinder (31), a glue barrel (34) is fixedly connected to the rear side of the point gluing cylinder (31), a point gluing head (33) is fixedly connected to the lower side of the point gluing cylinder (31), and the front side of the fixed plate (32) is fixedly connected with the lower side of the rear side of the square fixed plate (22).

6. The computer mainboard fin dispensing equipment according to claim 3, characterized in that: The rotating mechanism (4) includes a threaded rod (41), the threaded rod (41) is fixedly connected with a gear (42), the gear (42) is connected with a meshing chain (43), the meshing chain (43) is connected with a meshing wheel (44), the meshing wheel (44) is fixedly connected with a motor (45), the motor (45) is fixedly connected with a fixed seat (16), the threaded rod (41) is connected with a threaded hole (24), and the threaded rod (41) is rotatably connected with a circular groove (172).

7. The computer mainboard fin dispensing equipment according to claim 2, characterized in that: The handle mechanism (5) includes a square fixed block (51), the square fixed block (51) is provided with a T-shaped groove (53), the square fixed block (51) is provided with a square groove (52), the square fixed block (51) is provided with a circular groove (54), the circular groove (54) is rotatably connected with a rotating block assembly (55), and the square fixed block (51) is fixedly connected with a conveying belt (13).

8. The computer mainboard fin dispensing equipment according to claim 7, characterized in that: The rotating block assembly (55) includes a cylinder (552), the cylinder (552) is fixedly connected with an S-shaped double-semicircle splicing block (551), the cylinder (552) is fixedly connected with a handle rod (553), the cylinder (552) is rotatably connected with the circular groove (54), the handle rod (553) is slidably connected with the square groove (52), and the S-shaped double-semicircle splicing block (551) is slidably connected with the square fixed block (51).

9. The computer mainboard fin dispensing apparatus according to claim 8, wherein: The clamping plate mechanism (6) includes two square clamping blocks (61), the square clamping blocks (61) are fixedly connected with T-shaped sliding blocks (62), the square clamping blocks (61) are fixedly connected with spring assemblies (63), the square clamping blocks (61) are fixedly connected with fixed plates (65), the square clamping blocks (61) are provided with L-shaped grooves (66), the L-shaped grooves (66) are slidably connected with clamping plate assemblies (64), the T-shaped sliding blocks (62) are slidably connected with the T-shaped groove (53), the spring assemblies (63) include four fixed columns (631), the fixed columns (631) are fixedly connected with fixed rings (632), the fixed rings (632) are fixedly connected with circular fixed blocks (633), the circular fixed blocks (633) are fixedly connected with springs (634), and the fixed columns (631) are fixedly connected with the square clamping blocks (61).

10. The computer mainboard fin dispensing apparatus according to claim 9, wherein: The clamping plate assembly (64) includes a concave clamping block one (641), the concave clamping block one (641) is fixedly connected with a handle (642) above, and the left and right concave clamping blocks one (641) are fixedly connected with L-shaped sliding blocks two (643) on the side away from each other, the L-shaped sliding blocks two (643) are fixedly connected with springs two (644) below, the springs two (644) are fixedly connected with the lower inner wall of the L-shaped recess (66) below, and the outer wall of the L-shaped sliding blocks two (643) is in sliding connection with the inner wall of the L-shaped recess (66).

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