Silencer air inlet pipe punching tool

Abstract

The utility model discloses a silencer air inlet pipe punching tool, and belongs to the technical field of automobile part machining. The utility model aims to provide the punching tool for the air inlet pipe of the silencer, which can be used for simultaneously punching four holes in the air inlet pipe of the silencer at one time through a whole set of mechanical equipment. Four guide rods are fixedly mounted at four corners of a worktable, the top ends of the four guide rods are fixedly mounted on a top plate, guide sleeves are sleeved on the four guide rods between the worktable and the top plate, and the guide sleeves are fixedly mounted on a lifting worktable; a cylinder body of the lifting cylinder is fixedly mounted on the top plate; a piston rod of the lifting cylinder penetrates through the top plate and is fixedly connected with the lifting workbench; the lifting workbench is provided with a punch receding hole and a turning plate receding hole. A punch and a clamping assembly are installed on the workbench.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile part processing. Background Art

[0002] The intake pipe of the automobile muffler (see Figure 7 , intake pipe M) is used to connect the main muffler and the automobile exhaust pipe. It is made by blow molding process. However, four holes ( Figure 7 A, B, C, D in Summary of the Invention

[0003] The purpose of the utility model is to provide a punching tooling for the intake pipe of the muffler, which can punch four holes in the intake pipe of the muffler at one time through a set of mechanical equipment.

[0004] Four guide rods are fixedly installed at the four corners of the workbench. The tops of the four guide rods are fixedly installed on the top plate. Guide sleeves are sleeved on the four guide rods between the workbench and the top plate. The guide sleeves are fixedly installed on the lifting workbench; The cylinder body of the lifting cylinder is fixedly installed on the top plate. The piston rod of the lifting cylinder passes through the top plate and is fixedly connected with the lifting workbench; A punch relief hole and a flap relief hole are opened on the lifting workbench; A punch and a clamping assembly are installed on the workbench; A motor is installed under the lifting workbench. A driving pulley is installed on the motor shaft of the motor. The driving pulley is connected with the punch working pulley through a belt;

[0005] The punch and the clamping assembly are divided into a punch assembly and an air pipe clamping assembly;

[0006] The punch assembly: The punch working pulley is installed at the top of the punch assembly guide rod. There is a sleeve rod with internal teeth at the lower end of the punch assembly guide rod. A connecting rod with external teeth at the top is inserted into the sleeve rod. And the external teeth of the connecting rod are always meshed with the internal teeth of the sleeve rod. The connecting rod is installed on the lifting plate through a bearing. A punch is installed at the bottom end of the connecting rod. The cylinder body of the punch lifting cylinder is installed on the lifting table mounting plate through the motor connecting plate. The lifting table mounting plate is fixedly installed at the rear side of the punch relief hole. The bottom end of the piston rod of the punch lifting cylinder is fixedly connected with the lifting plate;

[0007] The air pipe clamping assembly: A fixed mold mounting frame and a moving mold lifting cylinder mounting frame are fixedly installed on the bottom plate of the punch and the clamping assembly. The moving mold lifting cylinder is installed on the moving mold lifting cylinder mounting frame. The top end of the piston rod of the moving mold lifting cylinder is connected with one side of the moving mold mounting frame. The moving mold and the fixed mold are respectively installed on the corresponding moving mold mounting frame and fixed mold mounting frame. A punch hole is opened on the moving mold mounting frame;

[0008] A waste collection mechanism is installed at the rear side of the punch and the clamping assembly: a flap shaft rod is installed at the lower end of the flap, and both ends of the flap shaft rod are installed on the flap support rods, and the bottom ends of the flap support rods are fixedly installed on the workbench; the rear side of the flap is connected to the top end of the piston rod of the flap cylinder in a shaft form, and the bottom end of the cylinder body of the flap cylinder is installed on the upper end of the cylinder bracket in a shaft form, and the bottom of the cylinder bracket is fixedly installed on the workbench.

[0009] The utility model has a simple structure, is convenient to operate and use, and can simultaneously open four holes on the muffler inlet pipe at one time in cooperation with the special clamping die for the muffler inlet pipe, and can collect the waste materials from the hole opening in a unified manner. Since a completely mechanical method is adopted, the labor intensity is reduced and the safety is increased. Brief Description of the Drawings

[0010] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 is a top view of the lifting workbench of the utility model;

[0012] Figure 3 is a schematic diagram of the structure of the punch and the clamping assembly of the utility model;

[0013] Figure 4 is a schematic diagram of the structure of the punch assembly of the utility model;

[0014] Figure 5 is a schematic diagram of the structure of the air pipe clamping assembly of the utility model;

[0015] Figure 6 is a schematic diagram of the structure of the waste collection mechanism of the utility model;

[0016] Figure 7 is a schematic diagram of the muffler inlet pipe. Detailed Description of the Preferred Embodiment

[0017] In the utility model, four guide rods 5 are fixedly installed at the four corners of the workbench 10, the top ends of the four guide rods 5 are fixedly installed on the top plate 3, and guide sleeves 12 are sleeved on the four guide rods 5 between the workbench 10 and the top plate 3, and the guide sleeves 12 are fixedly installed on the lifting workbench 4; see Figure 1 , the workbench 10 and the top plate 3 are two fixed parts fixedly connected by the guide rods 5 installed at the four corners, forming a frame structure, and the lifting workbench 4 is a movable workbench installed on the guide rods 5 between the workbench 10 and the top plate 3 through the guide sleeves 12 (the same number as the guide rods 5). That is to say, the lifting workbench 4 can move up and down between the workbench 10 and the top plate 3 with the guide rods 5 as the guide rods.

[0018] The cylinder body of the lifting cylinder is fixedly installed on the top plate 3, and the piston rod 2 of the lifting cylinder passes through the top plate 3 and is fixedly connected to the lifting workbench 4; the lifting cylinder is a cylinder that drives the lifting workbench 4 to rise and fall, that is, the up and down movement of the lifting workbench 4 between the workbench 10 and the top plate 3 is completed by the lifting cylinder.

[0019] The lifting workbench 4 is provided with a punch hole 15 and a flap hole 21; these two holes are provided to match other structures of the utility model. Figure 1 It can be seen that when the flap is erected (non-working state), the lifting platform 4 needs to be lowered for work, so a collision will occur. In order to avoid the collision, the flap clearance hole 21 is set. When the lifting platform 4 is working, the flap is avoided through this hole. Regarding the punch clearance hole 15, since the power source of the punch assembly 801 that rises and falls synchronously with the lifting platform 4 is above the lifting platform 4, a hole is opened to facilitate the passage of the punch assembly guide rod 80101. In addition, due to this hole, a fixed connecting plate (lifting platform mounting plate 14) for fixing the punch lifting cylinder 80103 is also installed on the rear side of this hole.

[0020] A punch and a clamping assembly are mounted on the workbench 10; see Figure 1 and Figure 2 The utility model respectively sets four sets of punches and clamping assemblies (A hole punch and clamping assembly 8, B hole punch and clamping assembly 7, C hole punch and clamping assembly 6, D hole punch and clamping assembly 9) corresponding to the positions of the four holes (A, B, C, D) of the muffler intake pipe. Except for the different clamping dies for matching the position and shape of the intake pipe, the other structures of these four sets of assemblies are exactly the same.

[0021] A motor 1 is installed below the lifting workbench 4. A driving pulley 20 is installed on the motor shaft of the motor 1. The driving pulley 20 is connected to the punch working pulley through a belt. The motor 1 is a driving device, and its housing is fixed on the lifting workbench 4. The power is transmitted to the driving pulley 20 through the shaft of the motor 1, and finally transmitted to the punch working pulley of the punch and clamping assembly through the belt. Since the present utility model actually adopts four groups of punches and clamping assemblies, a punch working pulley is installed at the top of the guide rod 80101 of each punch assembly. There are four in total. In order to connect and link each punch working pulley through a belt, each linked punch working pulley is set as a coaxial synchronous double-groove pulley (punch and clamping assembly pulley 18 with hole A, punch and clamping assembly pulley 17 with hole B, punch and clamping assembly pulley 16 with hole C, double-groove pulley 19 of punch and clamping assembly with hole D. Among them, since the punch and clamping assembly pulley 16 with hole C is the last one and there is no connecting mechanism behind it, the punch and clamping assembly pulley 16 with hole C can adopt a coaxial synchronous single-groove pulley). In addition, since a belt tension pulley 13 is provided at the belt between each pulley, as can be seen from Figure 2 it can be seen that the present utility model is provided with three belt tension pulleys 13 in total. The belt tension pulleys 13 are installed on the lifting workbench 4 through a wheel bracket.

[0022] Since the punch and clamping assembly adopts four sets of components with the same structure, the present utility model takes the punch and clamping assembly 8 (i.e., the punch and clamping assembly with hole A) as an example for detailed description: Punch and clamping assembly: It is divided into a punch assembly 801 and an air pipe clamping assembly 802. The punch assembly 801 and the air pipe clamping assembly 802 are two components that cooperate with each other. The punch assembly 801 is used to punch holes in the air pipe. After the air pipe clamping assembly 802 is installed with a mold matching the inlet air pipe, the inlet air pipe is firmly clamped to facilitate punching.

[0023] Punch assembly 801: The punch working pulley 18 is installed at the top of the punch assembly guide rod 80101. At the lower end of the punch assembly guide rod 80101, there is a sleeve rod 80106 with internal teeth. The connecting rod 80107 with external teeth at the top is inserted into the sleeve rod 80106, and the external teeth of the connecting rod 80107 are always meshed with the internal teeth of the sleeve rod 80106. The connecting rod 80107 is installed and connected to the lifting plate 80104 through a bearing 80108. A punch 80105 is installed at the bottom end of the connecting rod 80107. The cylinder block of the punch lifting cylinder 80103 is installed on the lifting table mounting plate 14 through the motor connecting plate 80102. The lifting table mounting plate 14 is fixedly installed at the rear side of the punch relief hole 15. The bottom end of the piston rod of the punch lifting cylinder 80103 is fixedly connected to the lifting plate 80104. The punch assembly 801 is mainly a set of components that cooperate with the lifting and rotation of the punch 80105 to complete the punching of corresponding positions on the intake pipe. The entire operation is divided into the lifting driven by the lifting workbench 4 (primary lifting), the rotation driven by the punch working pulley 18 (i.e., the A-hole punch and the clamping assembly pulley 18), and the lifting driven by the lifting plate 80104 (secondary lifting).

[0024] The lifting driven by the lifting workbench 4 (primary lifting): See Figure 1 , Figure 2 and Figure 4 , this lifting operation can be understood as a rough lifting. In order to assist the secondary lifting work to be more precise, the lifting workbench 4 is fixedly connected to the cylinder block of the punch lifting cylinder 80103 through the lifting table mounting plate 14 and the motor connecting plate 80102. The piston rod of the punch lifting cylinder 80103 is connected to other components of the punch through the lifting plate 80104. In addition, the power sources (motor 1, connecting belt, upper-level punch working pulley, etc.) of the punch working pulley 18 are all installed on the lifting workbench 4. Therefore, when the lifting workbench 4 performs the first-level lifting, it will drive the punch assembly 801 and the power part to perform a lifting movement at the same time. This part of the lifting makes a slight gap between the punch 80105 and the intake pipe wall.

[0025] The lifting driven by the lifting plate 80104 (secondary lifting): This lifting work is a precise lifting, that is, precisely adjusting the punch to punch the corresponding part of the intake pipe. The connecting rod 80107 is inserted into the sleeve rod 80106, that is, the connecting rod 80107 performs a vertical insertion and extraction movement relative to the sleeve rod 80106. The power of its insertion and extraction movement is driven by the punch lifting cylinder 80103. When the piston rod of the punch lifting cylinder 80103 pushes downward ( Figure 4 direction), it drives the lifting plate 80104, the bearing 80108, the connecting rod 80107, and the punch 80105 to move downward until the bottom end of the punch 80105 tightly abuts against the intake pipe wall.

[0026] The punch working pulley 18 is driven to rotate: After the lifting process in the above two steps, when the bottom end of the punch 80105 closely abuts against the wall of the intake pipe, the motor 1 operates. The power is transmitted through the driving pulley 20 and the belt to the double-groove pulley 19 of the D-hole punch and the clamping assembly, and then through the belt to the punch working pulley 18 (this part is shown in Figure 2 ), and then the power is transmitted to the guide rod 80101 and the sleeve rod 80106 of the punch assembly. Since the connecting rod 80107 is inserted into the sleeve rod 80106 (the sleeve rod 80106 and the connecting rod 80107 are fixed as a whole) and vertical teeth meshing is adopted, the rotation is transmitted to the connecting rod 80107. The punch 80105 at the bottom of the connecting rod 80107 also rotates accordingly. However, the connecting rod 80107 and the lifting plate 80104 are connected through the bearing 80108. Therefore, the inner wall of the bearing 80108 rotates, but the outer wall does not rotate. Then, the punch lifting cylinder 80103 is started, so that the punch 80105 can move downward while rotating, and punch the corresponding position of the intake pipe until the hole is punched. After the through hole is punched, the punch lifting cylinder 80103 moves back, driving the punch 80105 to move upward. At this time, the hole piece waste cut and punched is placed inside the punch 80105. After reaching the initial position, at this time, the punch 80105 disengages from the intake pipe, the punch lifting cylinder 80103 stops working, and the motor 1 also stops working. The lifting workbench 4 moves upward, driving the punch assembly 801 to move upward. At this time, the punch assembly 801 moves away from the air pipe clamping assembly 802, that is, the punching work is completed.

[0027] Air pipe clamping assembly 802: A fixed mold mounting frame 80205 and a moving mold lifting cylinder mounting frame 80202 are fixedly installed on the bottom plate 803 of the punch and the clamping assembly. The moving mold lifting cylinder 80201 is installed on the moving mold lifting cylinder mounting frame 80202. The top end of the piston rod of the moving mold lifting cylinder 80201 is connected to one side of the moving mold mounting frame 80203. The moving mold and the fixed mold are respectively installed on the corresponding moving mold mounting frame 80203 and fixed mold mounting frame 80205. A punch hole 80204 is opened on the moving mold mounting frame 80203; see Figure 5, this part is a component for clamping the intake pipe. Since the intake pipe is a non-standard part, in order to clamp it firmly, corresponding molds (divided into the upper mold and the lower mold) need to be designed. The upper mold is installed on the moving mold mounting frame 80203, and the lower mold is installed on the stationary mold mounting frame 80205, and the upper mold and the lower mold are kept corresponding. After they can be closed, the intake pipe can be firmly clamped. Since this utility model corresponds to four groups of air pipe clamping components 802, due to different clamping positions, the four groups of molds are also different from each other, but the air pipe clamping components 802 they install are the same. The clamping component bottom plate 803 and the moving mold lifting cylinder mounting frame 80202 are respectively the fixed plate for installing the stationary mold mounting frame 80205 and the fixed frame plate of the moving mold lifting cylinder 80201. The moving mold lifting cylinder 80201 is a cylinder that pushes the moving mold mounting frame 80203 to move up and down. When the upper mold and the lower mold need to be installed on the air pipe clamping component 802, the moving mold lifting cylinder 80201 is activated to lift the moving mold mounting frame 80203 high up, so as to leave enough space between the moving mold mounting frame 80203 and the stationary mold mounting frame 80205. At this time, the upper mold is installed on the moving mold mounting frame 80203, and the lower mold is installed on the stationary mold mounting frame 80205. Then, the intake pipe is placed at the corresponding position on the installed and fastened lower mold. Then, the moving mold lifting cylinder 80201 is activated, so that it drives the moving mold mounting frame 80203 with the installed upper mold to move downward until it cooperates with the stationary mold mounting frame 80205 with the installed lower mold, and firmly clamps the intake pipe. In this way, the punch assembly 801 can be operated to work and punch the intake pipe. In order to facilitate the punch 80105 to punch the intake pipe, a through hole (punching hole 80204 for the punch) is opened in the upper mold corresponding to the punch 80105 of the moving mold lifting cylinder 80201. Only after the punch 80105 passes through this hole can it carry out the punching work on the intake pipe.

[0028] A waste collection mechanism 11 is installed at the rear side of the punch and the clamping component: a flap shaft rod 1104 is installed at the lower end of the flap 1101, and both ends of the flap shaft rod 1104 are installed on the flap support rods 1103, and the bottom ends of the flap support rods 1103 are fixedly installed on the workbench 10; the rear side of the flap 1101 is connected in a shaft form to the top end of the piston rod of the flap cylinder 1102, and the bottom end of the cylinder body of the flap cylinder 1102 is installed in a shaft form at the upper end of the cylinder support 1105, and the bottom of the cylinder support 1105 is fixedly installed on the workbench 10. See Figure 6, the flap 1101 is similar to a trough shape. A flap shaft rod 1104 is installed in a shaft form on the side wall of the trough shape to ensure that the flap 1101 can rotate around this axis. The flap support rod 1103 is just a simple bracket for supporting the flap 1101. The flap cylinder 1102 is the power component for the flap 1101 to flip. When the piston rod of the flap cylinder 1102 extends, it will push the flap 1101 to rotate around the flap shaft rod 1104. The upper part protrudes forward (at this time, the punch and the clamping assembly just complete punching, and the punch assembly 801 moves upward to the highest position driven by the lifting workbench 4 (the highest position set by the present utility model). That is to say, the punch 80105 with the hole piece waste rises to the highest position. In this way, a gap is left between the punch 80105 and the air pipe clamping assembly 802. When the flap cylinder 1102 pushes the flap 1101 to protrude forward, its upper end extends to the lower part of the punch 80105 with the hole piece waste. At this time, when the punch 80105 is knocked, the hole piece waste will fall into the trough of the flap 1101 and slide down obliquely from the rear side into the collection box placed behind the bottom of the flap 1101.

Claims

1. A muffler intake pipe punching tool, characterized by: Four guide rods (5) are fixedly mounted at four corners of the workbench (10), the top ends of the four guide rods (5) are fixedly mounted on the top plate (3), guide sleeves (12) are sleeved on the four guide rods (5) between the workbench (10) and the top plate (3), and the guide sleeves (12) are fixedly mounted on the lifting workbench (4); the cylinder body of the lifting cylinder is fixedly mounted on the top plate (3), and the piston rod (2) of the lifting cylinder passes through the top plate (3) and is fixedly connected to the lifting workbench (4); a punch clearance hole (15) and a flap clearance hole (21) are opened on the lifting workbench (4); a punch and a clamping assembly are mounted on the workbench (10); a motor (1) is mounted below the lifting workbench (4), and a driving pulley (20) is mounted on the motor shaft of the motor (1), and the driving pulley (20) is connected to the punch working pulley through a belt; Punch and clamping assembly: divided into a punch assembly (801) and a trachea clamping assembly (802); Punch assembly (801): The punch working pulley (18) is installed at the top of the punch assembly guide rod (80101). A sleeve rod (80106) with internal teeth is provided at the lower end of the punch assembly guide rod (80101). A connecting rod (80107) with external teeth at the top is inserted into the sleeve rod (80106), and the external teeth of the connecting rod (80107) are always meshed with the internal teeth of the sleeve rod (80106). The connecting rod (80107) is connected to the sleeve rod (80106) through a bearing (801 08) is installed on the lifting plate (80104), a punch (80105) is installed at the bottom end of the connecting rod (80107), the cylinder body of the punch lifting cylinder (80103) is installed on the lifting platform mounting plate (14) through the motor connecting plate (80102), the lifting platform mounting plate (14) is fixedly installed on the rear side of the punch clearance hole (15), and the bottom end of the piston rod of the punch lifting cylinder (80103) is fixedly connected to the lifting plate (80104); Air pipe clamping assembly (802): a fixed mold mounting frame (80205) and a movable mold lifting cylinder mounting frame (80202) are fixedly mounted on the punch and clamping assembly bottom plate (803); the movable mold lifting cylinder (80201) is mounted on the movable mold lifting cylinder mounting frame (80202); the top end of the piston rod of the movable mold lifting cylinder (80201) is connected to one side of the movable mold mounting frame (80203); the movable mold and the fixed mold are respectively mounted on the movable mold mounting frame (80203) and the fixed mold mounting frame (80205) corresponding to each other; and a punch punching hole (80204) is opened on the movable mold mounting frame (80203); A waste collection mechanism (11) is installed on the rear side of the punch and clamping assembly: a flap shaft (1104) is installed at the lower end of the flap (1101), both ends of the flap shaft (1104) are installed on the flap support rod (1103), and the bottom end of the flap support rod (1103) is fixedly installed on the workbench (10); the rear side of the flap (1101) is connected to the top end of the piston rod of the flap cylinder (1102) in the form of an axis, the bottom end of the cylinder body of the flap cylinder (1102) is installed in the form of an axis on the upper end of the cylinder bracket (1105), and the bottom of the cylinder bracket (1105) is fixedly installed on the workbench (10).

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