A mold for producing assembled ribbed floor formwork

Abstract

The present invention relates to the technical field of formwork production equipment, and specifically to a mold for producing assembled multi-rib floor formwork, comprising a base and a mold base fixedly installed on one side of the top thereof, a water cooling mechanism for cooling the formwork is arranged on the top of the mold base, a fixed plate is fixedly installed on the other side of the top of the base, a movable platform is slidably arranged between the fixed plate and the mold base, a module is fixedly installed on the side of the movable platform facing the mold base, and a conduction mechanism for guiding the blanking of the formwork is arranged on one side of the fixed plate; in the process that clean water passes through the heat conduction pipe, the heat inside the mold base is absorbed; the warm water sprayed out by the nozzle and the inclined pipe cools the formwork to avoid damage to the formwork caused by directly spraying cold water, and after the warm water in the water supply cylinder is emptied, the clean water sprayed out by the nozzle will continue to cool the formwork, and the clean water sprayed out by the inclined pipe will cool the area between the module and the movable platform, so that the module is cooled quickly, which is convenient for the subsequent demolding of the formwork.

Description

Technical Field

[0001] The invention relates to the technical field of formwork production equipment, in particular to a mould for producing assembled multi-ribbed floor formwork. Background Art

[0002] The assembled multi-ribbed floor is composed of thin plates and ribs with small intervals. When a fire occurs, a large amount of toxic gas and thick smoke will be generated inside the building, which will not only threaten the life safety of personnel, but also affect the fire fighting work; therefore, it is necessary to open a smoke exhaust port on the assembled multi-ribbed floor to effectively discharge the indoor smoke and toxic gas to the outside. By arranging a cylinder on the top wall of the formwork of the ordinary assembled multi-ribbed floor, the assembled multi-ribbed floor can reserve a smoke exhaust port when pouring concrete;

[0003] The assembled multi-ribbed floor formwork with a cylindrical top wall is directly injection molded. During the molding and demoulding process, since the cylinder on the formwork is solid, it is difficult to cool down quickly through natural heat dissipation alone, which can easily cause harm to the operator when unloading the formwork. At the same time, since the existing assembled multi-ribbed floor formwork is large in size, it is easy to cause bumps and damage to the formwork during manual unloading, affecting the quality of the product. Summary of the invention

[0004] The technical problems solved by this solution are:

[0005] How to solve the problem that the cylinder on the mold shell is solid and it is difficult to cool down quickly only by natural heat dissipation, which may easily cause harm to the operator when unloading the mold shell?

[0006] How to solve the problem that the existing assembled multi-rib floor formwork is large in size and is easily damaged by collision during manual unloading, thus affecting its product quality?

[0007] The object of the present invention can be achieved by the following technical scheme: a mold for producing assembled multi-rib floor formwork, comprising a base and a mold base fixedly installed on one side of the top thereof, the top of the mold base is provided with a water cooling mechanism for cooling the formwork, a fixed plate is fixedly installed on the other side of the top of the base, a moving platform is slidingly provided on the base between the fixed plate and the mold base through a guide rail, a module is fixedly installed on the side of the moving platform facing the mold base, and a conduction mechanism for guiding the blanking of the formwork is provided on one side of the fixed plate;

[0008] The water cooling mechanism comprises a positioning frame fixedly connected to the top of the mold base, a water spray unit for spraying water is arranged on the positioning frame, and a connecting pipe is arranged on one side of the positioning frame, a water supply pipe is connected to the middle of the connecting pipe, and a control valve is fixedly installed in the middle of the water supply pipe;

[0009] The transmission mechanism includes a cylinder fixedly mounted on a fixed plate, the cylinder is arranged horizontally, and the extended end of the cylinder is fixedly connected to the moving platform, the extended end of the cylinder is also fixedly mounted with a first shifting rod, the fixed plate is also fixedly mounted with a support frame, and the support frame is fixedly connected with two cross bars.

[0010] A further technical improvement of the present invention is that a heat insulation cover is fixedly installed on the mold base, a leather bag is installed in the heat insulation cover, a heat conduction pipe is fixedly embedded in the mold base, one end of the heat conduction pipe passes through the heat insulation cover and is connected to the leather bag, and the other end of the heat conduction pipe is connected to one end of the connecting pipe.

[0011] A further technical improvement of the present invention is that the water spray unit includes a water supply cylinder fixedly connected to the positioning frame, a piston is slidably provided on the inner wall of the water supply cylinder, a transmission rod is fixedly connected to the piston, one end of the transmission rod movably passes through the water supply cylinder, and a transmission plate is fixedly installed on the top of the movable platform, and the position of the transmission plate corresponds to the transmission rod.

[0012] A further technical improvement of the present invention is that: the side of the water supply cylinder away from the transmission rod is connected to the other end of the connecting pipe, and the middle of the bottom surface of the water supply cylinder is connected with a nozzle and an inclined pipe, the nozzle is located between the inclined pipe and the connecting pipe, and the nozzle is arranged toward the module, and the output end of the inclined pipe is arranged toward the connection between the module and the movable platform; clean water is injected into the connecting pipe through the water supply pipe, and then injected into the bladder through the heat conduction pipe, so that the bladder expands and increases, and in the process of the clean water passing through the heat conduction pipe, the heat inside the mold base is absorbed, which will accelerate the cooling speed of the mold base; the piston slides to the end of the inner wall of the water supply cylinder away from the connecting pipe, the bladder shrinks and becomes smaller, and the obtained warm water enters the water supply cylinder and is sprayed out from the nozzle and the inclined pipe. The mold shell is cooled by the warm water sprayed from the nozzle and the inclined tube to avoid damage caused by excessive cooling of the mold shell due to direct spraying of cold water. During this process, the edge of the mold shell will shrink slightly, so that the area between the module and the movable platform is in contact with the external environment; after the warm water in the water supply cylinder is emptied, the clean water sprayed from the nozzle will continue to cool the mold shell, and the clean water sprayed from the inclined tube will cool the area between the module and the movable platform, so that the module is cooled quickly, which is convenient for subsequent demolding of the mold shell, and the extended end of the cylinder is controlled to shrink to the shortest, so that the mold shell on the module moves, and the clean water sprayed from the nozzle and the inclined tube will cool the mold shell comprehensively to ensure efficient cooling of the mold shell.

[0013] A further technical improvement of the present invention is that a groove is provided at the bottom of the movable platform, a trapezoidal conduction platform for guiding the mold shell is arranged inside the groove, the bottom of the trapezoidal conduction platform is slidably connected to the base, and a movable rod is fixedly connected to the side of the trapezoidal conduction platform, and a tension spring is fixedly connected between one end of the movable rod and the fixed plate.

[0014] A further technical improvement of the present invention is that a flip plate is rotatably arranged on the support frame through a connecting frame, the bottom of the flip plate is movably connected to the moving rod through a second lever, and the top of the flip plate is slidably connected to the first lever; by controlling the extended end of the cylinder to shrink to the shortest, the two cross bars respectively provide thrust to the two push rods, so that the two push rods respectively push the upper and lower edges of the mold shell, so that the mold shell falls off the module, and at the same time, the first lever provides a flipping thrust to the flip plate, and the moving rod will drive the trapezoidal conduction table to pass through the groove, so that the trapezoidal conduction table slides between the mold base and the module. When the mold shell is manually unloaded, the mold shell is conducted on the inclined surface of the trapezoidal conduction table, which is convenient for manual transfer of the mold shell and avoids bumping and damage to the mold shell, which affects the quality of its product.

[0015] A further technical improvement of the present invention is that two push rods for demolding the mold shell are movably inserted on the movable platform, a baffle is fixedly installed at one end of the push rod away from the module, a thrust spring is fixedly connected between the baffle and the movable platform, and the positions of the two baffles correspond to the two cross bars respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the present invention is in use, clean water is injected into the connecting pipe through the water supply pipe, and then injected into the bladder through the heat conducting pipe, so that the bladder expands and increases. In the process of the clean water passing through the heat conducting pipe, the heat inside the mold base is absorbed, which will accelerate the cooling speed of the mold base; the piston slides to the end of the inner wall of the water supply cylinder away from the connecting pipe, the bladder shrinks and becomes smaller, and the obtained warm water enters the water supply cylinder and is sprayed out from the nozzle and the inclined pipe. The warm water sprayed from the nozzle and the inclined pipe cools the mold shell, avoiding direct spraying of cold water to cause damage to the mold shell caused by excessive cooling. In this process, The edge of the mold shell will shrink slightly, so that the area between the module and the movable platform will be in contact with the external environment; after the warm water in the water supply cylinder is drained, the clean water sprayed from the nozzle will continue to cool the mold shell, and the clean water sprayed from the inclined tube will cool the area between the module and the movable platform, so that the module will cool down quickly, which is convenient for the subsequent demolding of the mold shell. The extended end of the cylinder is controlled to shrink to the shortest, so that the mold shell on the module moves, and the clean water sprayed from the nozzle and the inclined tube will cool the mold shell comprehensively, ensuring efficient cooling of the mold shell.

[0018] When the present invention is in use, the extended end of the cylinder is controlled to shrink to the shortest, so that the two cross bars provide thrust to the two push rods respectively, so that the two push rods push the upper and lower edges of the mold shell respectively, so that the mold shell falls off the module. At the same time, the first lever provides a flipping thrust to the flip plate, and the moving rod drives the trapezoidal conduction table to pass through the groove, so that the trapezoidal conduction table slides to between the mold base and the module. When the mold shell is manually unloaded, the mold shell is conducted on the inclined surface of the trapezoidal conduction table, which is convenient for manual transfer of the mold shell and avoids bumps and damages to the mold shell, which affects the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the water cooling mechanism of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the water spray unit of the present invention;

[0023] Figure 4 For the present invention Figure 1 A magnified view of the structure at center;

[0024] Figure 5 It is a schematic diagram of the structure of the conduction mechanism of the present invention;

[0025] Figure 6 It is a schematic structural stereogram of the mobile station and the module of the present invention.

[0026] In the figure: 1. conduction mechanism; 2. fixed plate; 3. base; 4. moving platform; 5. drainage hole; 6. mold base; 7. feed pipe; 8. water cooling mechanism; 9. transmission plate; 10. thrust spring; 11. ejector rod; 12. module; 13. groove; 101. support frame; 102. cylinder; 103. tension spring; 104. moving rod; 105. trapezoidal conduction platform; 106. flip plate; 107. first lever; 108. cross bar; 801. positioning frame; 802. water spray unit; 803. heat pipe; 804. bladder; 805. heat shield; 806. connecting pipe; 807. control valve; 808. water supply pipe; 8021. water supply cylinder; 8022. transmission rod; 8023. inclined pipe; 8024. nozzle; 8025. piston. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. 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 creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 6 As shown, a mold for producing assembled multi-rib floor formwork comprises a base 3 and a mold base 6 fixedly mounted on one side of the top thereof, a water cooling mechanism 8 for cooling the formwork is arranged on the top of the mold base 6, a fixed plate 2 is fixedly mounted on the other side of the top of the base 3, a movable platform 4 is slidingly arranged on the base 3 between the fixed plate 2 and the mold base 6 via a guide rail, a module 12 is fixedly mounted on the side of the movable platform 4 facing the mold base 6, and a conduction mechanism 1 for guiding the blanking of the formwork is arranged on one side of the fixed plate 2.

[0029] See also Figure 1-Figure 6 As shown, the water cooling mechanism 8 includes a positioning frame 801 fixedly connected to the top of the mold base 6, and a water spray unit 802 for spraying water is arranged on the positioning frame 801, and a connecting pipe 806 is arranged on one side of the positioning frame 801, and the middle part of the connecting pipe 806 is connected to a water supply pipe 808, and a control valve 807 is fixedly installed in the middle part of the water supply pipe 808.

[0030] See also Figure 1-Figure 6 As shown, a heat insulating cover 805 is fixedly installed on the above-mentioned mold base 6, and a leather bag 804 is installed in the heat insulating cover 805. A heat conducting pipe 803 is fixedly embedded inside the mold base 6. One end of the heat conducting pipe 803 passes through the heat insulating cover 805 and is connected with the leather bag 804, and the other end of the heat conducting pipe 803 is connected with one end of the connecting pipe 806.

[0031] See also Figure 1-Figure 6 As shown, the above-mentioned water spray unit 802 includes a water supply cylinder 8021 fixedly connected to the positioning frame 801, a piston 8025 is slidably provided on the inner wall of the water supply cylinder 8021, a transmission rod 8022 is fixedly connected to the piston 8025, one end of the transmission rod 8022 movably passes through the water supply cylinder 8021, and a transmission plate 9 is fixedly installed on the top of the movable platform 4, and the position of the transmission plate 9 corresponds to the transmission rod 8022.

[0032] See also Figure 1-Figure 6As shown, the side of the water supply cylinder 8021 away from the transmission rod 8022 is connected to the other end of the connecting pipe 806, and the middle part of the bottom surface of the water supply cylinder 8021 is connected with a nozzle 8024 and an inclined pipe 8023, the nozzle 8024 is located between the inclined pipe 8023 and the connecting pipe 806, and the nozzle 8024 is arranged toward the module 12, and the output end of the inclined pipe 8023 is arranged toward the connection between the module 12 and the movable platform 4; clean water is injected into the connecting pipe 806 through the water supply pipe 808, and then injected into the leather bag 804 through the heat conducting pipe 803, so that the leather bag 804 expands and increases, and in the process of the clean water passing through the heat conducting pipe 803, the heat inside the mold base 6 is absorbed, which will accelerate the cooling speed of the mold base 6; the piston 8025 slides to the inner wall end of the water supply cylinder 8021 away from the connecting pipe 806, the leather bag 804 shrinks and becomes smaller, and the obtained warm water enters the water supply cylinder 802 1. The warm water sprayed from the nozzle 8024 and the inclined tube 8023 cools the mold shell to avoid damage caused by excessive cooling of the mold shell due to direct spraying of cold water. During this process, the edge of the mold shell will shrink slightly, so that the area between the module 12 and the movable platform 4 is in contact with the external environment; after the warm water in the water supply cylinder 8021 is emptied, the clean water sprayed from the nozzle 8024 will continue to cool the mold shell, and the clean water sprayed from the inclined tube 8023 will cool the area between the module 12 and the movable platform 4, so that the module 12 will cool down quickly, which is convenient for subsequent demolding of the mold shell, and the extended end of the cylinder 102 is controlled to shrink to the shortest, so that the mold shell on the module 12 moves, and the clean water sprayed from the nozzle 8024 and the inclined tube 8023 will cool the mold shell comprehensively to ensure efficient cooling of the mold shell.

[0033] See also Figure 1-Figure 6 As shown, the above-mentioned transmission mechanism 1 includes a cylinder 102 fixedly mounted on a fixed plate 2. The cylinder 102 is arranged horizontally, and the protruding end of the cylinder 102 is fixedly connected to the moving platform 4. A first shifting rod 107 is also fixedly mounted on the protruding end of the cylinder 102. A support frame 101 is also fixedly mounted on the fixed plate 2, and two cross bars 108 are fixedly connected to the support frame 101.

[0034] See also Figure 1-Figure 6 As shown, a groove 13 is provided at the bottom of the movable platform 4, and a trapezoidal conductive platform 105 for guiding the mold shell is arranged inside the groove 13. The bottom of the trapezoidal conductive platform 105 is slidably connected to the base 3, and a movable rod 104 is fixedly connected to the side of the trapezoidal conductive platform 105, and a tension spring 103 is fixedly connected between one end of the movable rod 104 and the fixed plate 2.

[0035] See also Figure 5As shown, a flip plate 106 is rotatably arranged on the support frame 101 through the connecting frame, and the bottom of the flip plate 106 is movably connected to the moving rod 104 through the second lever, and the top of the flip plate 106 is slidably connected to the first lever 107; by controlling the extended end of the cylinder 102 to shrink to the shortest, the two cross bars 108 respectively provide thrust to the two push rods 11, so that the two push rods 11 respectively push the upper and lower edges of the mold shell, so that the mold shell falls off the module 12. At the same time, the first lever 107 provides a flipping thrust to the flip plate 106, and the moving rod 104 will drive the trapezoidal conduction platform 105 to pass through the groove 13, so that the trapezoidal conduction platform 105 slides to between the mold base 6 and the module 12. When the mold shell is manually unloaded, the mold shell is conducted on the inclined surface of the trapezoidal conduction platform 105, which is convenient for manual transfer of the mold shell and avoids bumping and damage to the mold shell, which affects the quality of its product.

[0036] See also Figure 1-Figure 6 As shown, two push rods 11 for demolding the mold shell are movably inserted on the above-mentioned movable platform 4, and a baffle is fixedly installed at one end of the push rod 11 away from the module 12. A thrust spring 10 is fixedly connected between the baffle and the movable platform 4, and the positions of the two baffles correspond to the two cross bars 108 respectively.

[0037] See also Figure 1 As shown, a feed pipe 7 for injecting glue is fixedly inserted on the mold base 6, and a drainage hole 5 is opened on the top of the base 3.

[0038] Working principle: When the present invention is used, first, Figure 1 and Figure 5 As shown, by controlling the extended end of the cylinder 102 to be extended to the longest, the movable platform 4 is closely attached to the mold base 6, and the module 12 enters the mold groove of the mold base 6. At this time, as shown in FIG. Figure 2-Figure 4 As shown, the piston 8025 slides to the inner wall end of the water supply cylinder 8021 close to the connecting pipe 806 to block the connecting pipe 806; at the same time, Figure 1 and Figure 2 As shown, the glue is injected into the mold groove of the mold base 6 through the feed pipe 7, and the movable platform 4 and the module 12 are cooperated to form the mold shell, and then the control valve 807 in the closed state is opened, and clean water is injected into the connecting pipe 806 through the water supply pipe 808, and then injected into the bladder 804 through the heat conduction pipe 803, so that the bladder 804 expands and increases. In the process of the clean water passing through the heat conduction pipe 803, the heat inside the mold base 6 is absorbed, which will accelerate the cooling speed of the mold base 6; when the mold shell is formed, as shown in FIG. Figure 2-Figure 4As shown, the extended end of the control cylinder 102 is retracted to half its length. At this time, the piston 8025 slides to the inner wall end of the water supply cylinder 8021 away from the connecting pipe 806, and the bladder 804 shrinks and becomes smaller. The clean water entering the connecting pipe 806 through the water supply pipe 808 and the hot water injected into the connecting pipe 806 from the heat conducting pipe 803 are mixed, and the obtained warm water enters the water supply cylinder 8021 and is then sprayed out from the nozzle 8024 and the inclined pipe 8023. The warm water sprayed out from the nozzle 8024 and the inclined pipe 8023 cools the mold shell, avoiding direct spraying of cold water. The water causes the mold shell to cool too quickly and be damaged. During this process, the edge of the mold shell will shrink slightly, so that the area between the module 12 and the movable platform 4 is in contact with the external environment; after the warm water in the water supply cylinder 8021 is emptied, the nozzle 8024 and the inclined pipe 8023 will spray out clean water. The clean water sprayed from the nozzle 8024 will continue to cool the mold shell, and the clean water sprayed from the inclined pipe 8023 will cool the area between the module 12 and the movable platform 4, so that the module 12 is cooled quickly, which is convenient for the subsequent demoulding of the mold shell. Figure 1 , Figure 5 and Figure 6 As shown, the extended end of the cylinder 102 is continued to be controlled to be contracted to the shortest, so that the mold shell on the module 12 moves. In this process, the clean water sprayed from the nozzle 8024 and the inclined tube 8023 will cool down the mold shell comprehensively to ensure efficient cooling of the mold shell; by controlling the extended end of the cylinder 102 to be contracted to the shortest, the two cross bars 108 respectively provide thrust to the two push rods 11, so that the two push rods 11 respectively push the upper and lower edges of the mold shell, so that the mold shell falls off the module 12. At the same time, the first lever 107 provides a flipping thrust to the flip plate 106, and the moving rod 104 will drive the trapezoidal conduction platform 105 to pass through the groove 13, so that the trapezoidal conduction platform 105 slides between the mold base 6 and the module 12. When the mold shell is manually unloaded, the mold shell is conducted on the inclined surface of the trapezoidal conduction platform 105, which is convenient for manual transfer of the mold shell and avoids bumps and damages to the mold shell, which affects the quality of its products.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A mold for producing assembled ribbed floor formwork, comprising a base (3) and a mold base (6) fixedly mounted on one side of the top thereof, characterized in that: A water cooling mechanism (8) for cooling the mold shell is arranged on the top of the mold base (6); a fixed plate (2) is fixedly mounted on the other side of the top of the base (3); a moving platform (4) is arranged between the fixed plate (2) and the mold base (6); a module (12) is fixedly mounted on the side of the moving platform (4); and a conducting mechanism (1) for guiding the blanking of the mold shell is arranged on one side of the fixed plate (2); The water cooling mechanism (8) comprises a positioning frame (801) fixedly connected to the mold base (6); a water spray unit (802) for spraying water is arranged on the positioning frame (801); a connecting pipe (806) is arranged on one side of the positioning frame (801); a water supply pipe (808) is connected to the connecting pipe (806); a control valve (807) is fixedly installed in the middle of the water supply pipe (808); a heat insulation cover (805) is fixedly installed on the mold base (6); a leather bag (804) is installed in the heat insulation cover (805); a heat conduction pipe (803) is fixedly embedded in the mold base (6); one end of the heat conduction pipe (803) is connected to the leather bag (804), and the other end of the heat conduction pipe (803) is connected to one end of the connecting pipe (806); the water spray unit (802) comprises a water supply cylinder (8021) fixedly connected to the positioning frame (801); A piston (8025) is slidably provided on the inner wall of the water supply cylinder (8021), a transmission rod (8022) is fixedly connected to the piston (8025), one end of the transmission rod (8022) movably penetrates the water supply cylinder (8021), a transmission plate (9) is fixedly installed on the top of the movable platform (4), the position of the transmission plate (9) corresponds to the transmission rod (8022), the side of the water supply cylinder (8021) away from the transmission rod (8022) is connected to the other end of the connecting pipe (806), and a nozzle (8024) and an inclined pipe (8023) are connected in the middle of the bottom surface of the water supply cylinder (8021), the nozzle (8024) is located between the inclined pipe (8023) and the connecting pipe (806), and the nozzle (8024) is arranged toward the module (12), and the output end of the inclined pipe (8023) is arranged toward the connection between the module (12) and the movable platform (4); The transmission mechanism (1) comprises a cylinder (102) fixedly mounted on a fixed plate (2), the protruding end of the cylinder (102) being fixedly connected to a movable platform (4), a first lever (107) being fixedly mounted on the protruding end of the cylinder (102), a support frame (101) being fixedly mounted on the fixed plate (2), two cross bars (108) being fixedly connected to the support frame (101), a groove (13) being provided at the bottom of the movable platform (4), a trapezoidal transmission platform (105) for guiding the mold shell being provided inside the groove (13), the bottom of the trapezoidal transmission platform (105) being slidably connected to the base (3), and the side of the trapezoidal transmission platform (105) being fixedly connected to the base (3). A moving rod (104) is provided, one end of the moving rod (104) being fixedly connected to a tension spring (103) between the fixed plate (2), a flip plate (106) being rotatably arranged on the support frame (101), the bottom of the flip plate (106) being movably connected to the moving rod (104), and the top of the flip plate (106) being slidably connected to a first shifting rod (107), two ejector rods (11) for demoulding the mold shell being movably inserted on the moving platform (4), a baffle being fixedly installed at one end of the ejector rod (11) away from the module (12), a thrust spring (10) being fixedly connected between the baffle and the moving platform (4), and the positions of the two baffles respectively corresponding to the two cross bars (108).

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