Punching device

Abstract

The utility model provides a punching device, which relates to the part punching field, and comprises a support seat (10), a punching table (20), a positioning support (30), a fixed seat (40), a lifting platform (50) and a positioning seat (60), the punching table (20) is arranged on the upper side of the support seat (10), the end face of the punching table (20) is provided with the positioning support (30), the top end of the positioning support (30) is provided with the fixed seat (40), and the bottoms of the positioning support (30) and the fixed seat (40) are respectively provided with a clamping mechanism; a sliding lifting table (50) is arranged between the positioning supports (30) and located on the lower side of the fixing base (40). The positioning seat (60) is arranged on the lower side of the lifting table (50), guide rods (62) are arranged on the two sides of the end face of the positioning seat (60) respectively, the top ends of the guide rods (62) penetrate through the lifting table (50) and are in sliding connection, and first springs (62) are arranged between the positioning seat (60) and the lifting table (50) and located on the outer rings of the guide rods (62). According to the punching device, in the punching process, the automobile support can be clamped and pressed at the same time, and the punching precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of parts punching, in particular to a punching device. Background Art

[0002] In the process of automobile parts processing and production, punching is a very important processing technology; especially in the processing of automobile brackets, the punching process directly affects the installation and positioning accuracy of each component on the corresponding bracket. Chinese patent document CN210614816U discloses a high-precision automobile bracket punching forming die, which ensures the correct hole position during processing and improves the punching accuracy through the symmetrically arranged clamping components; through the setting of sliders and slide grooves, it is easy to adjust the clamping plate to adapt to the clamping and fixing of blanks to be punched with different diameters; through the setting of compression springs, even if the fastening bolts are loose during the punching process, the fixation stability can be guaranteed, thereby improving the punching accuracy. However, the punching forming die only clamps and fixes the automobile bracket in the horizontal direction during the punching process, and does not form compression and positioning on the automobile bracket in the vertical direction; during the punching process, the impact of the punching tool head will cause the automobile bracket to bend or tilt upward along the punching position and support the downward punching mechanism (i.e., the upper die), causing the automobile bracket to be squeezed and deformed due to continuous punching pressure. First, the tensile force generated by the extrusion deformation can easily affect the punching accuracy, and second, the automobile bracket is prone to serious deformation, which increases the product defective rate during the punching process. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a punching device, which can not only fix the automobile bracket in the horizontal direction during the punching process, but also press it (i.e. the automobile bracket) in the vertical direction, thereby avoiding the problems of deviation and warping of the automobile bracket during the punching process, and improving the punching accuracy and quality.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A punching device comprises a supporting seat, a punching table, a positioning bracket, a fixed seat, a lifting platform and a positioning seat, the punching table is arranged on the upper side of the supporting seat and two positioning brackets are arranged in parallel on the end face of the punching table, the top ends of the two positioning brackets are connected to the bottom face of the same fixed seat and clamping mechanisms are arranged at the bottoms of them (i.e. the two positioning brackets); a sliding lifting platform is arranged between the two positioning brackets and located at the lower side of the fixed seat, and the end face of the lifting platform is connected to the output end of a hydraulic mechanism fixedly arranged on the fixed seat; the positioning seat is arranged in parallel on the lower side of the lifting platform and guide rods are fixedly arranged on both sides of the end face of the positioning seat, one end of the guide rod away from the positioning seat passes through the corresponding lifting platform and is slidably connected, a first spring is arranged between the positioning seat and the lifting platform and located at the outer ring of the guide rod; the bottom face of the lifting platform between the guide rods is distributed with tool mounting seats in a lattice pattern, through holes are provided on the positioning seat and the tool mounting seats corresponding to the punching table, and a tool mounting mechanism is arranged in the through holes in the positioning seat.

[0006] Based on further optimization of the above solution, a collection frame is detachably provided on the bottom surface of the support seat and corresponding to the tool mounting seat, which is used to collect debris generated during the punching process; the support seat and the punching table are fixedly connected by a support block and located at the outer circle of the collection frame.

[0007] Based on the further optimization of the above scheme, a vertical slide groove is opened on the side of the positioning brackets that are close to each other, and a positioning slider is set on the side of the lifting platform corresponding to the vertical slide groove. The positioning slider is clamped in the corresponding vertical slide groove and slidably connected, so as to realize the positioning of the lifting platform during the downward movement and avoid the displacement of the lifting platform.

[0008] Based on further optimization of the above scheme, the clamping mechanism includes an adjusting screw and a clamping plate. The clamping plate is slidably arranged on the end face of the stamping table. After the adjusting screw passes through the corresponding positioning bracket, it is rotatably connected to the side surface of the corresponding clamping plate close to the positioning bracket. The adjusting screw is threadedly connected to the positioning bracket.

[0009] Based on further optimization of the above solution, a limit block is provided at the end of the guide rod located on the upper side of the lifting platform to limit the downward movement of the guide rod.

[0010] Based on further optimization of the above scheme, the tool mounting mechanism includes a sliding block, a second spring and an annular turntable. A sliding cavity with a prismatic cross-section is arranged in the positioning seat and corresponding to the through hole, and the central axis of the sliding cavity is colinear with the central axis of the through hole; the sliding block is arranged corresponding to the sliding cavity (that is, the cross-section of the sliding block is also prismatic) and the outer wall of the sliding block is slidably connected to the inner wall of the sliding cavity, the bottom surface of the sliding block is connected to the bottom surface of the sliding cavity through the second spring, and a coaxial mounting hole is provided in the middle of the sliding block; the annular turntable is coaxially arranged with the sliding block and the annular turntable is rotatably clamped on the bottom surface of the sliding block, and clamping grooves are evenly arranged on the bottom surface of the annular turntable around its own axis; a clamping protrusion is arranged on the outer wall of the punching tool and corresponds to the clamping groove, and the top of the punching tool is threadedly connected to the tool mounting seat.

[0011] Based on further optimization of the above solution, the sliding cavity adopts any one of a quadrangular prism, a pentagonal prism or a hexagonal prism.

[0012] Based on further optimization of the above solution, the inner hole diameter of the annular turntable is consistent with the hole diameter of the mounting hole, and the hole diameter of the mounting hole is not larger than the hole diameter of the through hole corresponding to the positioning seat.

[0013] Based on further optimization of the above solution, a rubber buffer layer is evenly arranged on the bottom surface of the positioning seat and a through hole is opened in the rubber buffer layer corresponding to the tool mounting seat.

[0014] The following are the technical effects of the utility model:

[0015] The present application firstly clamps the horizontal position of the automobile bracket to be punched by means of a clamping assembly installed at the lower end of the positioning bracket, thereby completing the horizontal positioning of the automobile bracket and avoiding the automobile bracket from being offset during the punching process and affecting the punching accuracy; then, the automobile bracket is punched by means of the downwardly moved lifting platform and positioning seat, and the end face of the automobile bracket is pressed by the positioning seat, that is, the process of first pressing and positioning and then punching is realized during the downward movement, thereby avoiding the upward tilting or bending of the automobile bracket due to the impact force of the punching tool during the punching process, thereby avoiding the deformation of parts or the reduction of accuracy caused by the punching, and ensuring the punching quality. In addition, the present application facilitates the replacement and positioning of the punching tool by means of the cooperation of the lifting platform, positioning seat, guide rod, first spring, tool mounting seat, tool mounting mechanism, etc., thereby ensuring that the punching tool is set according to different punching numbers and positions, and effectively improving the use scope of the punching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the punching device in the embodiment of the utility model.

[0017] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0018] Figure 3 for Figure 2 BB section view.

[0019] Among them, 10, support seat; 20, punching table; 21, collection frame; 22, support block; 30, positioning bracket; 31, vertical slide groove; 321, adjusting screw; 322, clamping plate; 40, fixed seat; 41, hydraulic mechanism; 50, lifting platform; 51, positioning slider; 60, positioning seat; 61, tool mounting seat; 62, guide rod; 620, limit block; 63, first spring; 64, sliding cavity; 641, sliding block; 642, second spring; 643, annular turntable; 65, rubber buffer layer; 70, punching tool; 71, snap-on protrusion; 80, automobile bracket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Embodiment 1:

[0022] Referring to the figure below: a punching device includes a support base 10, a punching table 20, a positioning bracket 30, a fixing base 40, a lifting platform 50 and a positioning base 60, see Figure 1 As shown: the punching table 20 (parallel) is arranged on the upper side of the support seat 10 and two positioning brackets 30 are arranged parallel to the end surface of the punching table 20. Specifically, the outer ring of the top surface of the support seat 10 is fixedly connected to the bottom surface of the punching table 20 through multiple support blocks 22 (the number of support blocks 22 is set according to actual conditions, generally four and respectively arranged at the four corners of the top surface of the support seat 10). The top ends of the two positioning brackets 30 are connected to the bottom surface of the same fixed seat 40 and they (i.e. the two positioning brackets 30) are respectively provided with clamping mechanisms at their bottoms; as shown Figure 1 As shown: the clamping mechanism includes an adjusting screw 321 and a clamping plate 322, the clamping plate 322 is slidably arranged on the end face of the stamping table 20 (that is, the bottom end of the clamping plate 322 is slidably connected to the end face of the stamping table 20, and a horizontal slide groove is provided on the end face of the stamping table 20 corresponding to the clamping plate 322, and the sliding and sliding limitation of the clamping plate 322 on the end face of the stamping table 20 is realized through the horizontal slide groove), after the adjusting screw 321 passes through the corresponding positioning bracket 30, it is rotatably connected to the side surface of the corresponding clamping plate 322 close to the positioning bracket 30, and the adjusting screw 321 is threadedly connected to the positioning bracket 30.

[0023] A sliding lifting platform 50 is arranged between the two positioning brackets 30 and at the lower side of the fixing seat 40, and the end surface of the lifting platform 50 is connected to the output end of the hydraulic mechanism 41 fixedly arranged on the fixing seat 40 (such as Figure 1 As shown, the hydraulic mechanism 41 is fixedly arranged on the end face of the fixed seat 40, and the telescopic rod at its output end passes through the fixed seat 40 and is fixedly connected to the top face of the lifting platform 50 located on the lower side of the fixed seat 40, thereby realizing the driving control of the lifting platform 50 to rise or fall); a vertical slide groove 31 is provided on the side of the positioning brackets 30 that are close to each other, and a positioning slider 51 is provided on the side of the lifting platform 50 and corresponding to the vertical slide groove 31. The positioning slider 51 is clamped in the corresponding vertical slide groove 31 and is slidably connected, thereby realizing the positioning of the lifting platform 50 during the downward movement and avoiding the displacement of the lifting platform 50.

[0024] The positioning seat 60 is arranged parallel to the lower side of the lifting platform 50, and guide rods 62 are fixedly arranged on both sides of the end surface of the positioning seat 60. The end of the guide rod 62 away from the positioning seat 60 passes through the corresponding lifting platform 50 and is slidably connected (the guide rod 62 and the lifting platform 50). A first spring 63 is arranged between the positioning seat 60 and the lifting platform 50 and located on the outer ring of the guide rod 62 (that is, the upper end of the first spring 63 is fixedly connected to the bottom surface of the lifting platform 50, and the lower end is fixedly connected to the end surface of the positioning seat 60); a limit block 620 is arranged at the end of the guide rod 62 located on the upper side of the lifting platform 50, which is used to limit the downward movement of the guide rod 62 (thereby preventing the guide rod 62 from detaching from the lifting platform 50). The bottom surface of the lifting platform 50 between the guide rods 62 is distributed with tool mounting seats 61 in a dot matrix, and the positioning seat 60 and the punching table 20 are provided with through holes corresponding to the tool mounting seats 61, and a tool mounting mechanism is arranged in the through hole in the positioning seat 60. The tool installation mechanism includes a sliding block 641, a second spring 642 and an annular rotating disk 643. A sliding cavity 64 with a prismatic cross section is provided in the positioning seat 60 and corresponds to the through hole (combined with Figure 2 and Figure 3 As shown), the sliding cavity 64 is any one of a quadrangular prism, a pentagonal prism or a hexagonal prism (see Figure 3 As shown, this embodiment adopts a hexagonal sliding cavity 64), and the central axis of the sliding cavity 64 is collinear with the central axis of the through hole (corresponding to the positioning seat 60); the sliding block 641 is arranged corresponding to the sliding cavity 64 (that is, the cross section of the sliding block 641 is also prism-shaped), and the outer wall of the sliding block 641 is slidably connected to the inner wall of the sliding cavity 64, and the bottom surface of the sliding block 641 is connected to the bottom surface of the sliding cavity 64 through the second spring 642 (that is, the upper end of the second spring 642 is fixedly connected to the bottom surface of the sliding block 641, and the lower end is fixedly connected to the inner wall of the bottom surface of the sliding cavity 64, and the second spring 642 is collinear with the central axis of the sliding cavity 64, as shown in FIG. Figure 2 As shown in FIG. 1 , a coaxial mounting hole is provided in the middle of the sliding block 641 (for the punching tool 70 to pass through and realize the installation of the punching tool 70); the annular rotating disk 643 is coaxially arranged with the sliding block 641 and the annular rotating disk 643 is rotatably connected to the bottom surface of the sliding block 641, as shown in FIG. Figure 2 As shown: the inner hole diameter of the annular turntable 643 is consistent with the hole diameter of the mounting hole, and the hole diameter of the mounting hole is not larger than the hole diameter of the corresponding through hole of the positioning seat 60; the bottom surface of the annular turntable 643 and around its own axis are evenly provided with snap-fit ​​grooves (the number of snap-fit ​​grooves is set according to actual conditions, see Figure 3 As shown, in this embodiment, the number of the snap-in grooves is four, and a snap-in protrusion 71 is provided on the outer wall of the punching tool 70 and corresponds to the snap-in groove, and the top end of the punching tool 70 is threadedly connected to the tool mounting seat 61.

[0025] A rubber buffer layer 65 is evenly disposed on the bottom surface of the positioning seat 60 , and a through hole (ie, corresponding to the through hole of the positioning seat 60 ) is formed in the rubber buffer layer 65 corresponding to the tool mounting seat 61 .

[0026] The bottom surface of the support seat 20 corresponds to the tool mounting seat 61 (i.e., the through hole corresponding to the support seat 20, see Figure 1 A detachable collecting frame 21 is provided to collect debris generated during the punching process.

[0027] Working principle:

[0028] When in use, first place the automobile bracket 80 to be punched flat on the end face of the punching table 20, then rotate the corresponding adjusting screw 321 to make the clamping plate 322 move to the side close to each other, so as to clamp the automobile bracket 80. After that, set the punching tool 70 according to the position of the punching required (if the same batch of automobile brackets 80 are punched, the punching tool 70 is only set when it is used for the first time or when the tool is damaged). The punching tool 70 is set specifically as follows: first, the punching tool 70 is passed through the corresponding through hole of the positioning seat 60 from bottom to top, so that the clamping protrusion 71 is clamped in the corresponding clamping groove, and then the sliding block 641 can be supported to move upward; then, the punching tool 70 is rotated to be threadedly connected with the corresponding tool mounting seat 61. In this process, the punching tool 70 drives the annular turntable 643 to rotate around the sliding block 641, and at the same time, the punching tool 70 pulls the sliding block 641 to move upward, the second spring 642 is stretched, and the first spring 63 is slightly compressed, so as to maintain the stability of the entire mechanism. Then, the hydraulic mechanism 41 is started to drive the lifting platform 50 to move downward. During this process, the lifting platform 50 pushes the positioning seat 60 downward through the first spring 63 (the positioning seat 60 is first considered to be stationary, then, during the downward movement of the lifting platform 50, an extrusion force must be generated on the first spring 63, and the extrusion force of the first spring 63 pushes the positioning seat 60 downward). Therefore, the downward movement of the lifting platform 50 pushes the positioning seat 60 and the punching tool 70 to move downward at the same time. The bottom surface of the positioning seat 60 first contacts the end surface of the automobile bracket 80 to achieve the compression of the automobile bracket 80. As the lifting platform 50 continues to move downward (i.e. the hydraulic mechanism 41 is continuously driven), the distance between the lifting platform 50 and the positioning seat 60 is gradually reduced, the first spring 63 is compressed, the punching tool 70 exposes the through hole of the positioning seat 60 and punches the corresponding position of the automobile bracket 80; because the second spring 642 is in a stretched state when the punching tool 70 is installed, the second spring 642 is reset during the downward movement of the punching tool 70, so that the clamping protrusion 71 is always clamped in the corresponding clamping groove, and then the punching tool 70 is limited by the annular turntable 643 and the sliding block 641 to avoid radial runout during the punching process. The debris generated after punching falls into the collection frame 21, which is collected to avoid the problem of subsequent cleaning difficulties.

[0029] Embodiment 2:

[0030] As a further optimization of the solution of the utility model, on the basis of the solution of Example 1, in order to avoid extrusion damage to the side wall of the automobile bracket 80 during the clamping process, a rubber layer with anti-slip ridges is fixedly provided on the side surface of the clamping plate 322 away from the corresponding adjusting screw 321 (i.e., the side surface opposite to the clamping plate 322), thereby realizing protection of the side wall of the automobile bracket 80 during the clamping process.

[0031] Embodiment 3:

[0032] As a further optimization of the scheme of the utility model, on the basis of the scheme of Example 1, in order to avoid interference between the positioning seat 60 and the clamping plate 322 during the clamping process, the shortest distance between the two clamping plates 322 is greater than the width of the positioning seat 60 (limited by the distance between the ends of the two horizontal slide grooves that are close to each other). At the same time, the end face shape of the clamping plate 322 away from the corresponding adjusting screw 321 can be set accordingly according to the shape of the side wall of the automobile bracket 80; the bottom surface of the positioning seat 60 is set to correspond to the end face shape of the automobile bracket 80.

Claims

1. A punching device, characterized in that: It includes a supporting seat, a punching table, a positioning bracket, a fixed seat, a lifting platform and a positioning seat. The punching table is arranged on the upper side of the supporting seat and two positioning brackets are arranged parallel to the end face of the punching table. The top ends of the two positioning brackets are connected to the bottom face of the same fixed seat and clamping mechanisms are arranged at their bottoms respectively; a sliding lifting platform is arranged between the two positioning brackets and located at the lower side of the fixed seat, and the end face of the lifting platform is connected to the output end of the hydraulic mechanism fixedly arranged on the fixed seat; the positioning seat is arranged parallel to the lower side of the lifting platform and guide rods are fixedly arranged on both sides of the end face of the positioning seat, one end of the guide rod away from the positioning seat passes through the corresponding lifting platform and is slidably connected, and a first spring is arranged between the positioning seat and the lifting platform and located at the outer ring of the guide rod; the bottom face of the lifting platform between the guide rods is distributed with tool mounting seats in a lattice pattern, through holes are provided on the positioning seat and the tool mounting seats corresponding to the punching table, and a tool mounting mechanism is arranged in the through holes in the positioning seat.

2. A punching device according to claim 1, characterized in that: A collecting frame is detachably arranged on the bottom surface of the support seat and corresponds to the tool mounting seat; the support seat is fixedly connected to the punching table and is located at the outer circle of the collecting frame through a supporting block.

3. A punching device according to claim 1, characterized in that: A vertical slide groove is provided on the side of the positioning brackets that are close to each other, and a positioning slider is provided on the side of the lifting platform corresponding to the vertical slide groove. The positioning slider is clamped in the corresponding vertical slide groove and is slidably connected.

4. A punching device according to claim 1, characterized in that: The clamping mechanism includes an adjusting screw and a clamping plate. The clamping plate is slidably arranged on the end surface of the stamping table. After the adjusting screw passes through the corresponding positioning bracket, it is rotatably connected to the side surface of the corresponding clamping plate close to the positioning bracket. The adjusting screw is threadedly connected to the positioning bracket.

5. A punching device according to claim 1, characterized in that: A limit block is arranged at the end of the guide rod located on the upper side of the lifting platform.

6. A punching device according to claim 1, characterized in that: The tool mounting mechanism includes a sliding block, a second spring and an annular turntable. A sliding cavity with a prismatic cross-section is provided in the positioning seat and corresponds to the through hole, and the central axis of the sliding cavity is colinear with the central axis of the through hole; the sliding block is provided corresponding to the sliding cavity and the outer wall of the sliding block is slidably connected to the inner wall of the sliding cavity, the bottom surface of the sliding block is connected to the bottom surface of the sliding cavity through the second spring, and a coaxial mounting hole is provided in the middle of the sliding block; the annular turntable is coaxially provided with the sliding block and the annular turntable is rotatably engaged with the bottom surface of the sliding block, and engaging grooves are evenly provided on the bottom surface of the annular turntable and around its own axis; an engaging protrusion is provided on the outer wall of the punching tool and corresponds to the engaging groove, and the top end of the punching tool is threadedly connected to the tool mounting seat.

7. A punching device according to claim 6, characterized in that: The bottom surface of the positioning seat is evenly provided with a rubber buffer layer, and the rubber buffer layer is provided with a through hole corresponding to the tool mounting seat.

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