A punching tool for automobile sealing strip

Abstract

The utility model relates to the technical field of automobile sealing strip processing, specifically relates to a kind of punching tool for automobile sealing strip, including base, elastic groove, elastic block, belt axle pressure wheel, adjusting screw, driving motor, belt axle roller, support plate, guide rod, sliding plate, slide rail, sliding block, drill and cylinder.Elastic block in the elastic groove of base two sides and spring, adjusting screw constitute elastic pressure mechanism, self-adapting adjustment clamping force and avoid surface indentation;Driving motor and belt axle roller coaxial drive sealing strip uniform speed feed;The guide rod of support plate and slide rail form bidirectional positioning structure, sliding plate along guide rod vertical motion guarantees drilling accuracy, sliding block along slide rail lateral adjustment hole distance;Drill is driven by cylinder and completes drilling by pressing down.The utility model is through the compact design of elastic clamping, integrated drive and bidirectional orientation, solves the problem of traditional equipment structure complexity, maintenance difficulty and sealing strip surface damage, improves processing efficiency and product yield.

Description

Technical Field

[0001] This utility model relates to the field of automotive sealing strip processing technology, and in particular to a drilling tool for automotive sealing strips. Background Technology

[0002] ① Traditional automotive sealing strip processing mainly relies on manual operation. Operators need to manually adjust the position of the sealing strip and fix it with simple clamps, and then use handheld drills or stationary drills to drill holes one by one. Because the sealing strip material is soft and easily deformed, manual drilling can easily cause hole displacement or indentation damage to the sealing strip surface. At the same time, repeated clamping leads to low processing efficiency, making it difficult to meet the needs of mass production. In addition, traditional clamps are not adaptable to the thickness and curvature of the sealing strip, and changing the clamping parts further increases the complexity of operation and time costs.

[0003] ② To address the aforementioned issues, existing improvement solutions attempt to replace manual operation with mechanical automation. For example, a pneumatic clamping device and a servo-driven feeding mechanism are used to collaboratively control the positioning and feeding of the sealing strip, and a programmable controller is used to preset the drilling coordinates. Such solutions improve positioning accuracy through rigid clamping and mechanical transmission, while reducing manual intervention to shorten the processing cycle. However, this design often leads to complex equipment structures due to the dispersed arrangement of functional modules. Pneumatic components and transmission mechanisms require additional independent control units, which not only increases manufacturing costs but also significantly increases the difficulty of daily maintenance and troubleshooting.

[0004] ③ A more prominent contradiction lies in the fact that existing automated devices, in pursuit of high precision, employ rigid clamping and constant pressure control. While this reduces hole position deviation, it exacerbates surface indentation damage to soft sealing strips. Especially during long-term continuous processing, frequent friction between the clamping mechanism and the sealing strip can easily cause localized overheating and softening of the rubber material, thus reducing the product yield. Furthermore, the coordinated operation of the mechanical transmission and clamping mechanism requires precise coordination among multiple systems. Even minor errors in the control timing can lead to the accumulation of processing errors, forcing frequent equipment shutdowns for calibration, and the actual operating efficiency does not reach the expected level. Utility Model Content

[0005] The purpose of this utility model is to provide a punching tool for automotive sealing strips, which addresses the problems in the prior art such as surface indentation damage caused by rigid clamping, structural complexity and maintenance difficulties caused by the dispersion of equipment modules.

[0006] To achieve the above objectives, this utility model provides a drilling tool for automotive sealing strips, including a base. A mounting groove is provided on one side of the base, and a support block is installed in the mounting groove via bolts. Two sets of spring grooves are respectively provided on the two sides of the base away from the mounting groove. A spring block is slidably installed at the bottom end of each spring groove. A shaft-driven pressure roller is installed in each spring block via a bearing. A spring is fixedly installed at the top of the spring block, and a pressure block is fixedly installed at the top of the spring. The end of an adjusting screw is installed at the top of the pressure block via a bearing, and the adjusting screw is threaded onto the top of the base.

[0007] A roller with a shaft is mounted on the side of the base adjacent to the elastic groove via a bearing. The roller with a shaft passes through the base and is connected to the drive end of the drive motor. The drive motor is mounted on the side of the base away from the roller with a shaft via bolts.

[0008] The base has a base plate fixedly installed on both sides of its bottom end, and a diagonal brace plate is fixedly installed at the connection between the base plate and the base. The base plate has fixing holes.

[0009] The base has a support plate bolted to its top, and a tie plate is bolted between the support plate and the base.

[0010] The support plate has two sets of connecting blocks bolted to the side opposite to the inclined plate, and two sets of guide rods are symmetrically installed between the connecting blocks.

[0011] A sliding plate is slidably mounted on the outer side of the guide rod, and a slide rail is bolted to one side of the sliding plate. A sliding block is slidably mounted on the outer side of the slide rail.

[0012] The drilling rig is fixedly installed through the middle of the sliding block, and the drill bit is clamped and installed at the bottom of the drilling rig by a drill chuck.

[0013] A pneumatic rod is fixedly installed at the top of the sliding plate. The pneumatic rod passes through the connecting block and is connected to the cylinder piston. The cylinder is fixedly installed at the top of the connecting block.

[0014] This utility model discloses a drilling fixture for automotive sealing strips. Sliding spring blocks are installed in symmetrical spring grooves on both sides of the base. A shaft-driven pressure roller is mounted within each spring block via bearings. The top of the pressure roller is connected to the pressure block via a spring and contacts the end of an adjusting screw threaded onto the top of the base, forming an elastic clamping mechanism. The height of the pressure block can be linearly adjusted by rotating the adjusting screw, thereby changing the spring compression to accommodate the clamping requirements of sealing strips of different thicknesses. This maintains stable clamping force while avoiding surface indentation damage caused by rigid clamping. A shaft-driven roller mounted on one side of the base via a bearing is coaxially connected to the output shaft of a drive motor. After the drive motor starts, it directly drives the shaft-driven roller to rotate, causing the sealing strip to be fed uniformly along the base surface through friction. This eliminates the need for additional transmission components, simplifying the structure and improving power transmission efficiency.

[0015] A support plate vertically mounted on top of the base is rigidly connected to the base via a tie plate. A guide rod is horizontally arranged between two sets of symmetrical connecting blocks on the support plate. A sliding plate is fitted onto the guide rod and can slide along its axis. A laterally movable sliding block is mounted on a slide rail fixed to one side of the sliding plate. The drilling rig and drill bit are mounted through the center of the sliding block, forming a bidirectional positioning structure that is both horizontal and vertical. When the cylinder drives the pneumatic rod to press down, the sliding plate moves vertically along the guide rod, ensuring the linear accuracy of the drill bit's downward trajectory. The lateral movement of the sliding block on the slide rail allows for hole spacing adjustment.

[0016] This tooling integrates clamping, feeding, and drilling functions into a compact structure through the elastic clamping of the spring block and adjusting screw, the integrated drive of the shaft roller and drive motor, and the dual guiding constraint of the guide rod and slide rail. It solves the maintenance complexity problem caused by the dispersed modules of traditional equipment. At the same time, through flexible clamping and adaptive adjustment mechanism, it completely eliminates the surface indentation damage of the sealing strip while ensuring the accuracy of the hole position. It is especially suitable for high-precision, high-volume automotive sealing strip processing scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0019] Figure 2 This is a structural schematic diagram of the base of an embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the support plate in an embodiment of the present invention.

[0021] Figure 4 This is an embodiment of the present utility model. Figure 2 An enlarged diagram of A in the diagram.

[0022] In the diagram: 101, base; 102, mounting slot; 103, support block; 104, spring groove; 105, spring block; 106, pressure roller with shaft; 107, spring; 108, pressure block; 109, adjusting screw; 110, roller with shaft; 111, drive motor; 112, base plate; 113, diagonal brace plate; 114, fixing hole; 115, support plate; 116, diagonal tie plate; 117, connecting block; 118, guide rod; 119, sliding plate; 120, slide rail; 121, sliding block; 122, drilling rig; 123, drill bit; 124, pneumatic rod; 125, cylinder. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] Please see Figures 1-4 .

[0025] This utility model provides a drilling fixture for automotive sealing strips. A mounting groove 102 is formed on the surface of a base 101, and a support block 103 is fixed by bolts. Symmetrical spring grooves 104 are machined on both sides of the base 101, and slidable spring blocks 105 are installed within the grooves. A pressure block 108 is connected to the top of the spring block 105 via a spring 107, and is threadedly engaged with an adjusting screw 109 on the top of the base 101. A bearing-mounted pressure roller 106 is installed inside the spring block 105, with its axis perpendicular to the length direction of the base 101. One side of the base 101... A bearing-mounted roller 110 with its axis parallel to the roller 106 with its axis is installed. A drive motor 111 is bolted to the other side of the base 101 and coaxially connected to the roller 110. Base plates 112 are welded to both sides of the bottom of the base 101 and reinforced by diagonal bracing plates 113. Fixing holes 114 are provided on the base plates 112 for the overall installation of the tooling. A support plate 115 is vertically mounted on the top of the base 101 with bolts and reinforced by diagonal bracing plates 116. Two sets of symmetrical connecting blocks 117 are bolted to the surface of the support plate 115. A parallel guide rod 118 is horizontally installed between the guide rods 118; a sliding plate 119 is sleeved on the outside of the guide rod 118 and can slide along the guide rod 118. A slide rail 120 is bolted to one side of the sliding plate 119, and a sliding block 121 that can move laterally is mounted on the slide rail 120. A drilling rig 122 is installed through the center of the sliding block 121 and the drill bit 123 is fixed through the drill chuck, and its axis is perpendicular to the surface of the base 101. A pneumatic rod 124 is fixed to the top of the sliding plate 119, and its end passes through the connecting block 117 and is connected to the piston of the cylinder 125. The cylinder 125 The sealing strip is fixed to the top of the connecting block 117 by bolts; when the sealing strip is clamped on the surface of the base 101, it is limited on both sides by the shaft pressure roller 106 and the pressure is controlled by the adjusting screw 109 to control the compression of the spring 107. The shaft roller 110 is coaxially connected with the drive motor 111 to realize the linear conveying of the sealing strip. The lateral movement of the sliding block 121 on the slide rail 120 defines the hole spacing and is driven by the cylinder 125 to drive the pneumatic rod 124 to drive the sliding plate 119 to move vertically along the guide rod 118. Finally, the drilling bit 123 contacts the surface of the sealing strip to complete the processing.

[0026] Working principle: First, the sealing strip to be processed is placed on the base 101. The spring blocks 105 in the spring grooves 104 on both sides of the base 101 drive the shaft pressure rollers 106 to press down on both sides of the sealing strip through the elastic force of the springs 107. The pressing stroke of the pressure block 108 can be adjusted by rotating the adjusting screw 109, thereby controlling the pressing force of the shaft pressure rollers 106 on the sealing strip. This elastic pressing structure can adapt to the stable fixing of sealing strips of different thicknesses. After the sealing strip is pressed and positioned, the drive motor 111 drives the shaft rollers 110 to rotate, and the sealing strip is automatically fed along the length of the base 101 through friction. During the feeding process of the sealing strip, the guide rod 118 installed between the connecting blocks 117 on the support plate 115 ensures that the sliding plate 119 moves in a straight line. At the same time, the sliding block 121 slides on the slide rail 120 to achieve precise adjustment of the lateral position of the drill 122. When the drill 122 reaches the predetermined drilling position, the cylinder 125 drives the pneumatic rod 124 to push the sliding plate 119 down along the guide rod 118, so that the drill 122 drives the drill bit 123 to complete the drilling of the sealing strip. Throughout the process, the shafted pressure roller 106 continuously provides a stable lateral clamping force to prevent the sealing strip from shifting, the shafted roller 110 ensures uniform feed speed, the guide rod 118 ensures the verticality of the drilling, and the slide rail 120 realizes the hole spacing adjustment. This dual guide structure not only ensures the drilling position accuracy but also realizes the processing flexibility. The cooperation between the spring 107 and the adjusting screw 109 realizes both quick clamping and adaptability to the thickness tolerance of the sealing strip, ultimately achieving efficient, precise, and automated drilling of the sealing strip. This tooling integrates positioning, feeding, and drilling functions through a mechanical linkage design, significantly improving the efficiency and quality stability of sealing strip drilling.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A punching tool for automotive sealing strips, comprising a base (101), characterized in that: The base (101) has an installation groove (102) on one side. A support block (103) is installed in the installation groove (102) by bolts. The base (101) has two sets of spring grooves (104) on the two sides away from the installation groove (102). A spring block (105) is slidably installed at the bottom of the spring groove (104). A shaft pressure wheel (106) is installed in the spring block (105) by bearing. A spring (107) is fixedly installed at the top of the spring block (105). A pressure block (108) is fixedly installed at the top of the spring (107). The end of an adjusting screw (109) is installed at the top of the pressure block (108) by bearing. The adjusting screw (109) is threadedly installed at the top of the base (101). A roller (110) with a shaft is mounted on the side of the base (101) adjacent to the elastic groove (104) via a bearing. The roller (110) with a shaft passes through the base (101) and is connected to the drive end of the drive motor (111). The drive motor (111) is mounted on the side of the base (101) away from the roller (110) with bolts.

2. The drilling tool for automotive sealing strips as described in claim 1, characterized in that: A base plate (112) is fixedly installed on both sides of the bottom end of the base (101). A diagonal brace (113) is fixedly installed at the connection between the base plate (112) and the base (101). A fixing hole (114) is provided on the base plate (112).

3. The drilling tool for automotive sealing strips as described in claim 2, characterized in that: A support plate (115) is bolted to the top of the base (101), and a tie plate (116) is bolted between the support plate (115) and the base (101).

4. The drilling tool for automotive sealing strips as described in claim 3, characterized in that: The support plate (115) is mounted with two sets of connecting blocks (117) on the side away from the inclined plate (116) by bolts, and two sets of guide rods (118) are symmetrically installed between the connecting blocks (117).

5. The drilling tool for automotive sealing strips as described in claim 4, characterized in that: A sliding plate (119) is slidably mounted on the outside of the guide rod (118), and a slide rail (120) is bolted to one side of the sliding plate (119). A sliding block (121) is slidably mounted on the outside of the slide rail (120).

6. The drilling tool for automotive sealing strips as described in claim 5, characterized in that: A drilling rig (122) is fixedly installed through the middle of the sliding block (121), and a drill bit (123) is clamped and installed at the bottom of the drilling rig (122) by a drill chuck.

7. The drilling tool for automotive sealing strips as described in claim 6, characterized in that: A pneumatic rod (124) is fixedly installed at the top of the sliding plate (119). The pneumatic rod (124) passes through the connecting block (117) and is connected to the piston of the cylinder (125). The cylinder (125) is fixedly installed at the top of the connecting block (117).

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