A TCP structure CNC flame plasma cutting machine for pipe fittings

Abstract

The present invention discloses a TCP structure type CNC flame plasma cutting machine for pipe fittings, and relates to the relevant fields of plasma cutting machines, including a feed box, a receiving frame being slidably mounted on the feed box, two pairs of guide rods being symmetrically mounted on the receiving frame, two claw plates arranged opposite to each other being slidably mounted on the guide rods, a plurality of rollers and a bidirectional screw rod are mounted on the claw plates, the bidirectional screw rod passes through the receiving frame and is rotatably connected thereto, the bidirectional screw rod is sleeved with two symmetrically arranged threaded sleeves which are threadedly matched with the bidirectional screw rod, a first motor is fixedly mounted on the receiving frame, the output shaft of the first motor is coaxially fixed with the bidirectional screw rod, an assembly slot, a feeding piece is mounted on the inner side of the assembly slot, and a U-shaped plate is fixedly mounted on both ends of the feeding piece, a limiting slot is provided on the inner wall of the feed box, and the U-shaped plate is slidably mounted in the limiting slot.

Description

Technical Field

[0001] The present invention relates to the field of plasma cutting machines, in particular to a TCP-structured numerically controlled flame plasma cutting machine for pipes. Background Art

[0002] Plasma arc cutting machine is a machine that processes metal materials with the help of plasma cutting technology.

[0003] Plasma cutting is a processing method that uses the heat of a high-temperature plasma arc to partially or locally melt (and evaporate) the metal at the workpiece incision, and uses the momentum of high-speed plasma to remove the molten metal to form an incision.

[0004] The existing technology is a parallelogram mechanical structure. This structure has large process gaps and poor mechanical precision. In addition, the parallelogram structure is not suitable for fully automatic cutting of large pipes and large-sized profiles. In addition, the clamping structure used for feeding usually requires manual assistance to load the material, and then the pipe fittings are clamped by a clamp, and the loading process is relatively cumbersome.

[0005] In the processing of some metal pipe fittings, the loading and clamping of pipe fittings is a procedure with high work intensity. Long-term high-intensity work will have a certain impact on the health of the workers.

[0006] To this end, we propose a TCP structure CNC flame plasma cutting machine for pipe fittings. Summary of the Invention

[0007] The object of the present invention is to provide a TCP structured CNC flame plasma cutting machine for pipes to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a TCP-structured CNC flame plasma cutting machine for pipes, comprising:

[0009] A feeding box, a receiving frame is slidably mounted on the feeding box, two pairs of guide rods are symmetrically mounted on the receiving frame, two claw plates arranged opposite to each other are slidably mounted on the guide rods, and a plurality of rollers are mounted on the claw plates;

[0010] A bidirectional screw rod passes through the receiving frame and is rotatably connected thereto, the bidirectional screw rod is sleeved with two symmetrically arranged threaded sleeves that are threadably matched with the bidirectional screw rod, a first motor is fixedly mounted on the receiving frame, and an output shaft of the first motor is coaxially fixed to the bidirectional screw rod;

[0011] An assembly slot is provided, a feeding piece is installed inside the assembly slot, a U-shaped plate is fixedly installed at both ends of the feeding piece, a limiting slot is provided on the inner wall of the feeding box, the U-shaped plate is slidably installed in the limiting slot, and a cylinder is fixedly installed on both sides of the feeding box, and the movable rod of the cylinder is fixed to the U-shaped plate;

[0012] A blocking piece is fixed on the bottom of the feeding piece.

[0013] Preferably, a second motor is fixedly mounted on the supporting frame, and an output shaft of the second motor is connected to a transmission wheel rotatably mounted on the supporting frame through a third transmission belt.

[0014] Preferably, first gears are rotatably mounted on both sides of the feed box, and the first gears are engaged with racks provided on the U-shaped plate;

[0015] A first transmission rod is rotatably mounted on the bottom of the feed box, and a rotating shaft of the first transmission rod is connected to the first gear through a first transmission belt. A second transmission rod perpendicular to the first transmission rod is also rotatably mounted on the bottom of the feed box, and the second transmission rod is connected to the first transmission rod through a bevel gear set. A fourth gear is coaxially fixed on the second transmission rod, and the fourth gear cooperates with an incomplete gear rotatably mounted on the feed box;

[0016] A third gear is also rotatably mounted on the feed box, and the third gear cooperates with a second gear rotatably mounted on the receiving frame. The second gear is connected to the bidirectional screw rod through a second transmission belt, and the third gear is connected to the incomplete gear through a fourth transmission belt.

[0017] Preferably, the diameter of the feeding member is the same as the diameter of the material, and the arc length of the feeding member is less than half of the length of the material.

[0018] Preferably, a base plate is provided on one side of the feed box, a lifting member is fixedly mounted on the base plate, a crossbeam is slidably mounted on the lifting member, a transmission member is slidably mounted on the crossbeam, an adjustment member is rotatably mounted on the transmission member, and a gun head is detachably mounted on the adjustment member;

[0019] A power supply box and a cooling box are also fixedly mounted on the base plate.

[0020] Preferably, an arc surface is symmetrically provided on the inner side of the feed box.

[0021] Preferably, a protective cover is detachably mounted on one side of the feed box at the position of the incomplete gear, and the height of the protective cover is located at two-thirds of the third gear.

[0022] Preferably, the blocking members are arranged in multiple layers, and the innermost blocking member is solid.

[0023] Preferably, it further comprises a square tube clamping structure provided on one side of the lifting member;

[0024] The square tube clamping structure includes a slide plate, the clamping member is symmetrically installed on the sliding plate, the clamping member includes a support member, the support member is provided with a ring-shaped mounting groove, a rotating member in the mounting groove, the rotating member is circular and has a square groove in the center, positioning plates are slidably installed on the four sides of the square, and the positioning plates are connected to the telescopic member fixed on the rotating member.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention drives the roller to move accordingly to clamp the material by driving the relative movement of the two claw discs, and drives the feeding piece to rise upright when the two claw discs move relative to each other, drives the single material to move by the feeding piece, and quickly resets after the end of the feeding piece's stroke, and receives the material through the two claw discs. As the two claw discs continue to move, the material is clamped and abuts against the roller, thereby completing the effect of automatic feeding and clamping, greatly improving the processing efficiency and reducing the workload of the relevant personnel;

[0026] After clamping is completed, the material can be rotated by driving the transmission wheel, and the material can be pushed by driving the horizontal movement of the receiving frame;

[0027] Secondly, the present application can adjust the height of the crossbeam by driving the vertical movement of the crossbeam, adjust the position of the gun head by driving the horizontal movement of the transmission part, and adjust the angle of the gun head by driving the rotation of the adjustment part and the L-shaped plate. Compared with the parallelogram design of the prior art, the present application is more solid, more precise, and relatively more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the adjusting member and the L-shaped plate in the present invention.

[0030] Figure 3 It is a schematic diagram of part of the structure of the present invention.

[0031] Figure 4 for Figure 3 Exploded view of part of the structure.

[0032] Figure 5 for Figure 4 A magnified view of the structure at point A in the middle.

[0033] Figure 6 for Figure 3 An exploded diagram of another part of the structure.

[0034] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0035] Figure 8 It is a cross-sectional view of the feed box and the blocking member in the present invention.

[0036] Figure 9 It is a plan view of the feeding member in the present invention.

[0037] In the figure: 1. lifting member; 2. crossbeam; 3. transmission member; 4. L-shaped plate; 5. adjustment member; 6. gun head; 7. feed box; 8. power box; 9. cooling box; 10. receiving frame; 11. first motor; 12. counterweight; 13. first gear; 14. first transmission belt; 15. U-shaped plate; 16. blocking member; 17. second transmission belt; 18. second gear; 19. guide groove; 20. guide block; 21. guide rod; 22. transmission wheel; 23. third transmission belt; 24. second motor; 25. bidirectional screw; 26. threaded sleeve; 27. claw plate; 28. roller; 29. ​​feeding member; 30. third gear; 31. fourth transmission belt; 32. incomplete gear; 33. bevel gear set; 34. first transmission rod; 35. second transmission rod; 36. fourth gear. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] See also Figure 1-9 The present invention provides a technical solution: a TCP structure CNC flame plasma cutting machine for pipe fittings, comprising a feed box 7, at least four legs fixed to the bottom of the feed box 7, a receiving frame 10 slidably mounted on the feed box 7, two pairs of guide rods 21 symmetrically mounted on the receiving frame 10, two claw plates 27 arranged oppositely slidably mounted on the guide rods 21, a plurality of rollers 28 mounted on the claw plates 27, and an arc surface symmetrically arranged on the inner side of the feed box 7.

[0040] Furthermore, when the material is added into the feed box 7, it will roll into the feed piece 29 driven by the arc surface, so that the material will not stagnate inside the feed box 7, and the capacity of the feed box 7 is improved to a certain extent relative to the inclined surface.

[0041] A bidirectional screw rod 25 passes through the support frame 10 and is rotatably connected thereto. Two symmetrically arranged threaded sleeves 26 are sleeved on the bidirectional screw rod 25 and threadably engage with the bidirectional screw rod 25. A first motor 11 is fixedly mounted on the support frame 10, and an output shaft of the first motor 11 is coaxially fixed to the bidirectional screw rod 25.

[0042] An assembly groove is provided, a feeding piece 29 is installed inside the assembly groove, and a U-shaped plate 15 is fixedly installed at both ends of the feeding piece 29. A limiting groove is provided on the inner wall of the feeding box 7, and the U-shaped plate 15 is slidably installed in the limiting groove. A cylinder is fixedly installed on both sides of the feeding box 7, and the movable rod of the cylinder is fixed to the U-shaped plate 15;

[0043] The diameter of the feeding member 29 is the same as the diameter of the material, and the arc length of the feeding member 29 is less than half of the length of the material.

[0044] Furthermore, when the material is lifted to the highest point by the feeding member 29, the material is concentric with the center of the circle after the two claw discs 27 are closed;

[0045] When the two claw plates 27 move relative to each other until they are about to contact the feeding piece 29, the feeding piece 29 quickly returns to its original position and is received by the claw plates 27. At this time, the material is between the two claw plates 27 but is not clamped. As the two claw plates 27 move relative to each other, the material is clamped and driven to abut against the roller 28.

[0046] Among them, when the distance between the two gripping discs 27 is smaller than the diameter of the material, they do not contact the feeding member 29. At this time, the feeding member 29 is reset. Since the distance between the two claw discs 27 is smaller than the diameter of the material, the material is received by the claw discs after 29 is reset.

[0047] A blocking member 16 is fixed to the bottom of the feeding member 29 . The blocking members 16 are arranged in multiple layers, and the innermost blocking member 16 is solid.

[0048] When the feeding member 29 rises, it drives the blocking member 16 to extend to prevent the remaining material from entering the assembly groove;

[0049] A guide block 20 is fixed to the bottom of the receiving frame 10, and the guide block 20 slides with the guide groove 19 provided on the receiving frame 10. The guide block 20 and the guide groove 19 are both arranged in a "T" shape, and the receiving frame 10 is limited and guided by the sliding cooperation between the guide block 20 and the guide groove 19.

[0050] Furthermore, when the first motor 11 is working, the output shaft drives the bidirectional screw 25 to rotate. When the bidirectional screw 25 rotates, the two threaded sleeves 26 are driven to rotate relative to or oppositely through the threaded engagement of the two threaded sleeves 26, thereby driving the two claw plates 27 and the rollers 28 mounted on the claw plates 27 to rotate relative to or oppositely through the two threaded sleeves 26.

[0051] When the cylinder is working, it drives the two U-shaped plates 15 to rise vertically. When the U-shaped plates 15 rise, the feeding piece 29 rises. When the feeding piece 29 rises, it drives the single material in the guide groove 19 to rise vertically. When the two claw plates 27 move relative to each other, the roller 28 supports the material, and at this time, the material can rotate;

[0052] The counterweight 12 is fixedly mounted on the U-shaped plate 15 .

[0053] The horizontal position of the receiving frame 10 can be achieved through the cooperation of a rodless cylinder or a screw rod and a threaded sleeve. The specific driving method can be selected according to actual production and is not specifically limited in this application.

[0054] A second motor 24 is also fixedly mounted on the support frame 10 , and an output shaft of the second motor 24 is connected to a transmission wheel 22 rotatably mounted on the support frame 10 via a third transmission belt 23 .

[0055] Furthermore, when the material is in contact with the transmission wheel 22 after the support is completed, when the second motor 24 is working, the output shaft drives the transmission wheel 22 to rotate through the third transmission belt 23, and the transmission wheel 22 can drive the material to rotate;

[0056] The surface of the transmission wheel 22 is provided with an elastic anti-skid layer to ensure the transmission stability between the transmission wheel 22 and the material.

[0057] A first gear 13 is rotatably mounted on both sides of the feed box 7, and the first gear 13 is engaged with a rack provided on the U-shaped plate 15;

[0058] A first transmission rod 34 is rotatably mounted on the bottom of the feed box 7. The rotating shaft of the first transmission rod 34 is connected to the first gear 13 through a first transmission belt 14. A second transmission rod 35 perpendicular to the first transmission rod 34 is also rotatably mounted on the bottom of the feed box 7. The second transmission rod 35 is connected to the first transmission rod 34 through a bevel gear set 33. A fourth gear 36 is coaxially fixed on the second transmission rod 35. The fourth gear 36 cooperates with the incomplete gear 32 rotatably mounted on the feed box 7.

[0059] A third gear 30 is also rotatably mounted on the feed box 7, and the third gear 30 cooperates with the second gear 18 rotatably mounted on the receiving frame 10. The second gear 18 is connected to the bidirectional screw rod 25 through a second transmission belt 17, and the third gear 30 is connected to the incomplete gear 32 through a fourth transmission belt 31.

[0060] When the second gear 18 rotates, the second gear 18 is driven to rotate by the fourth gear 36, and the third gear 30 is driven to rotate by the fourth gear 36. When the third gear 30 rotates, the incomplete gear 32 is driven to rotate by the fourth gear 36. When the toothed portion of the incomplete gear 32 meshes with the fourth gear 36, the second transmission rod 35 is driven to rotate by the fourth gear 36. When the second transmission rod 35 rotates, the first transmission rod 34 is driven to rotate by the bevel gear set 33. The rotation of the first transmission rod 34 drives the two first gears 13 to rotate synchronously through the first transmission belt 14, so that when the first gear 13 rotates, the U-shaped plate 15 is driven to rise by meshing with the rack therewith. When the toothless portion of the bevel gear set 33 faces the fourth gear 36, the bevel gear set 33 and the fourth gear 36 are disengaged, thereby losing the transmission relationship.

[0061] With the counterweight 12 present, the driving force disappears, and the U-shaped plate 15 is lifted up and lowered to its original position under the force of the weight. At this time, the fourth gear 36 and the incomplete gear 32 are no longer in transmission relationship, so there is no interference in the lifting and lowering of the U-shaped plate 15.

[0062] It should be noted that when the second gear 18 is meshed with the third gear 30, the claw plate 27 is in an open state. When the two claw plates 27 are driven to move relative to each other, the U-shaped plate 15 is driven to rise. When the U-shaped plate 15 moves to the end of its stroke, it immediately disengages from the transmission relationship and descends upright, being clamped by the claw plate 27 and the roller 28.

[0063] It should also be noted that the transmission ratio between the incomplete gear 32 and the fourth gear 36 is 1:8, and the transmission ratio between the bevel gear set 33 and the third gear 30 is also 1:8. Of course, the present invention only expresses that the incomplete gear 32 is a large gear, and the fourth gear 36 and the third gear 30 are small gears. The transmission ratio between them is not absolutely limited in this application and can be adjusted according to actual production needs.

[0064] A base plate is provided on one side of the feed box 7, on which a lifting member 1 is fixedly mounted, a crossbeam 2 is slidably mounted on the lifting member 1, a transmission member 3 is slidably mounted on the crossbeam 2, an adjustment member 5 is rotatably mounted on the transmission member 3, and a gun head 6 is detachably mounted on the adjustment member 5;

[0065] A power supply box 8 and a cooling box 9 are also fixedly mounted on the base plate.

[0066] Furthermore, the height of the gun head 6 can be adjusted by driving the vertical movement of the crossbeam 2, the position of the gun head 6 can be adjusted by driving the horizontal movement of the transmission member 3, and the adjustment member 5 and the gun head 6 can be rotated by driving the L-shaped plate 4. By driving the adjustment member 5 to rotate, the gun head 6 can be turned toward or away from the transmission member 3, thereby making the gun head 6 have a strong position angle adjustment capability, which is more stable and more accurate than the quadrilateral structure in the prior art.

[0067] Among them, in this embodiment, the sliding or rotation is achieved through numerical control driving. The numerical control driving method is a very mature existing technology and will not be elaborated on here. Of course, other driving methods can also be used and this application does not make specific limitations.

[0068] A protective cover is detachably mounted on one side of the feed box 7 at the position of the incomplete gear 32 , and the height of the protective cover is located at two-thirds of the height of the third gear 30 .

[0069] Furthermore, the exposed parts on one side of the feed box 7 can be protected by the protective cover, which can protect them and prevent them from causing harm to relevant personnel during work.

[0070] The height is located at one third of the third gear 30 in order not to affect the transmission relationship between the third gear 30 and the second gear 18 .

[0071] It also includes a square tube clamping structure provided on one side of the lifting member 1;

[0072] The square tube clamping structure includes a slide plate, the clamping member is symmetrically mounted on the sliding plate, the clamping member includes a support member, the support member is provided with a mounting groove in an annular shape, a rotating member is disposed in the mounting groove, the rotating member is circular and has a square groove in the center, positioning plates are slidably mounted on all four sides of the square, and the positioning plates are connected to the telescopic member fixed on the rotating member;

[0073] Furthermore, the square tube is inserted into the square groove on the rotating member, and the four positioning plates are driven by the telescopic rod to move synchronously toward the center of the rotating member to clamp the square tube. By driving the rotating member to rotate, the clamped square tube can be driven to rotate, thereby clamping the square tube and driving it to rotate;

[0074] The telescopic part is a cylinder or an electric push rod, etc., which is not specifically limited in this application.

[0075] In summary, the present application drives the relative movement of the two claw discs 27 to drive the roller 28 to move accordingly to clamp the material, and when the two claw discs 27 move relative to each other, the feeding member 29 is driven to rise upright, and the feeding member 29 drives the single material to move. After the end of the stroke of the feeding member 29, it quickly resets, and the two claw discs 27 receive the material. As the two claw discs 27 continue to move, the material is clamped and abutted against the roller 28, thereby completing the effect of automatic feeding and clamping, greatly improving the processing efficiency and reducing the workload of the relevant staff.

[0076] After the clamping is completed, the material can be rotated by driving the transmission wheel 22, and the material can be pushed by driving the horizontal movement of the receiving frame 10;

[0077] Secondly, the present application can adjust the height of the crossbeam 2 by driving the vertical movement of the crossbeam 2, adjust the position of the gun head 6 by driving the horizontal movement of the transmission part 3, and adjust the angle of the gun head 6 by driving the rotation of the adjustment part 5 and the L-shaped plate 4. Compared with the parallelogram design of the prior art, the present application is more solid, more precise, and relatively more practical.

[0078] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0079] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A TCP structured CNC flame plasma cutting machine for pipes, characterized in that: include: A feeding box (7), a receiving frame (10) is slidably mounted on the feeding box (7), two pairs of guide rods (21) are symmetrically mounted on the receiving frame (10), two claw plates (27) arranged opposite to each other are slidably mounted on the guide rods (21), and a plurality of rollers (28) are mounted on the claw plates (27); A clamping structure, the clamping structure comprising a bidirectional screw rod (25), the bidirectional screw rod (25) passing through the receiving frame (10) and being rotatably connected thereto, the bidirectional screw rod (25) being sleeved with two symmetrically arranged threaded sleeves (26) threadably matched with the bidirectional screw rod (25), a first motor (11) being fixedly mounted on the receiving frame (10), an output shaft of the first motor (11) being coaxially fixed with the bidirectional screw rod (25); An assembly groove, wherein a feeding piece (29) is installed inside the assembly groove, and U-shaped plates (15) are fixedly installed at both ends of the feeding piece (29), and a limiting groove is provided on the inner wall of the feeding box (7), and the U-shaped plate (15) is slidably installed in the limiting groove; A first gear (13) is rotatably mounted on both sides of the feed box (7), and the first gear (13) is engaged with a rack provided on the U-shaped plate (15); A first transmission rod (34) is rotatably mounted on the bottom of the feed box (7), and a rotating shaft of the first transmission rod (34) is connected to the first gear (13) via a first transmission belt (14). A second transmission rod (35) perpendicular to the first transmission rod (34) is also rotatably mounted on the bottom of the feed box (7), and the second transmission rod (35) is connected to the first transmission rod (34) via a bevel gear set (33). A fourth gear (36) is coaxially fixed on the second transmission rod (35), and the fourth gear (36) cooperates with an incomplete gear (32) rotatably mounted on the feed box (7); A third gear (30) is also rotatably mounted on the feed box (7), and the third gear (30) cooperates with a second gear (18) rotatably mounted on the receiving frame (10). The second gear (18) is connected to the bidirectional screw rod (25) via a second transmission belt (17), and the third gear (30) is connected to the incomplete gear (32) via a fourth transmission belt (31). A blocking member (16) is fixed to the bottom of the feeding member (29); It also includes a lifting member (1), and a square tube clamping structure is provided on one side of the lifting member (1); The square tube clamping structure includes a slide plate, on which clamping members are symmetrically mounted; The clamping member includes a supporting member, which is provided with an annular mounting groove. A rotating member is provided in the mounting groove. The rotating member is circular and has a square groove in the center. Positioning plates are slidably installed on all four sides of the square groove. The positioning plates are connected to the telescopic member fixed on the rotating member.

2. The TCP structure CNC flame plasma cutting machine for pipes according to claim 1, characterized in that: A second motor (24) is also fixedly mounted on the support frame (10), and an output shaft of the second motor (24) is connected to a transmission wheel (22) rotatably mounted on the support frame (10) via a third transmission belt (23).

3. The TCP structure CNC flame plasma cutting machine for pipes according to claim 2, characterized in that: The diameter of the feeding piece (29) is the same as the diameter of the material, and the arc length of the feeding piece (29) is less than half the length of the material.

4. The TCP structure CNC flame plasma cutting machine for pipes according to claim 2, characterized in that: A base plate is provided on one side of the feed box (7), a lifting member (1) is fixedly mounted on the base plate, a crossbeam (2) is slidably mounted on the lifting member (1), a transmission member (3) is slidably mounted on the crossbeam (2), an adjustment member (5) is rotatably mounted on the transmission member (3), and a gun head (6) is detachably mounted on the adjustment member (5); A power supply box (8) and a cooling box (9) are also fixedly mounted on the base plate.

5. The TCP structure CNC flame plasma cutting machine for pipes according to claim 1, characterized in that: A curved surface is symmetrically provided on the inner side of the feed box (7).

6. The TCP structure CNC flame plasma cutting machine for pipes according to claim 1, characterized in that: A protective cover is detachably mounted on one side of the feed box (7) at the position of the incomplete gear (32), and the height of the protective cover is located at two-thirds of the height of the third gear (30).

7. The TCP structure CNC flame plasma cutting machine for pipes according to claim 1, characterized in that: The blocking members (16) are arranged in a multi-layer nested manner, and the innermost blocking member (16) is solid.

Images