One-step forming die for upper shell of cashbox
By designing a one-time molding mold on the cash box, the elastic parts and wedge-shaped surface structures can achieve simultaneous bending and forming of the metal plate, which solves the problems of complex operation and high cost in the prior art, and improves the molding quality and production efficiency.
Patent Information
- Application Number
- CN202420552131.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-21
AI Technical Summary
In the prior art, the molding of the shell on the cash box requires three sets of molds, which are complex in operation and affect the quality of product molding, and have high production costs.
A set of cash box upper shell molds are designed, including upper formwork, lower formwork, elastic core plate, elastic part, concave formwork, sliding formwork and elastic top member, and the left and right metal plates are realized through elastic part and wedge surface structure. The side and rear sides are bent and molded at the same time, and the sliding mold is moved inward with elastic force during demolding to remove.
The one-time molding of the shell on the cash box is realized, the operation is simplified, the molding quality is improved, the production cost is reduced, and the mold release process is facilitated.
Smart Images
Figure CN222153618U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of molds, in particular to a one-step forming mold for a cash box upper shell. Background Art
[0002] Cash boxes are mainly used as equipment for storing and managing cash. In the process of producing cash boxes, metal sheets need to be stamped into upper shells first. When stamping, the left and right sides and the rear side of the metal sheet need to be bent. However, the metal sheet will be pre-processed before stamping: connecting bayonet holes are punched out on the left and right sides of the metal sheet, and then the connecting bayonet holes are bent. Connecting hems are bent on the left and right sides and the rear side of the metal sheet. After the connecting bayonet holes are in contact with the rear side, the connection strength between the left and right sides and the rear side can be strengthened, and the upper shell is connected to the rear side through the connecting hems. A complete box can only be formed after the bottom plates are connected. Due to the influence of the connecting bayonet and the connecting folding edge, three molds are generally required on the market to complete the forming of the upper shell. First, the left side of the upper shell is bent on the first stamping die, and then the right side of the upper shell is bent on the second stamping die. Finally, the back side of the upper shell is bent on the third stamping die. Positioning is required in the three bending operations, which is not only complicated to operate, but also three positionings are likely to affect the forming quality of the product. Three sets of molds are required, and the production cost is high. Utility Model Content
[0003] The utility model aims to provide a one-time forming die for a cash box upper shell body which can bend the left and right sides and the rear side of a metal material plate with only one set of dies.
[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a one-time forming mold for the upper shell of the cash box, comprising: an upper template and a lower template, a core plate movably arranged on the upper template, a first elastic member arranged between the core plate and the upper template, a front concave template, a rear concave template and two side concave templates connected to the upper template are arranged around the core plate, the lower end wall of the core plate is flush with the lower end wall of the front concave template, the front concave template extends downward from the side concave template, and the side concave template extends downward from the rear concave template; a punch is arranged on the lower template, two first wedge-shaped surfaces are symmetrically arranged on the left and right sides of the punch, a lower drag plate is movably arranged up and down on the lower template, a second elastic member is arranged between the lower template and the lower drag plate, two sliding molds are symmetrically slidably arranged on the left and right sides of the lower drag plate, a second wedge-shaped surface slidably matched with the first wedge-shaped surface is arranged on the side wall of the sliding mold close to the punch, and an elastic top piece is respectively arranged on the left and right sides of the lower drag plate, and the elastic top piece is pressed against the sliding mold on the same side through elastic force.
[0005] Furthermore, the aforementioned cash box upper shell one-time forming mold, wherein a first inlay cavity is respectively provided on the inner side walls at the left and right ends of the front concave template, and a second inlay cavity is respectively provided on the inner side walls at the front ends of the two side concave templates, the first inlay cavities at the left and right ends of the front concave template are respectively connected with the second inlay cavities of the two side concave templates, and an inlay is inlaid between the connected first inlay cavity and the second inlay cavity.
[0006] Furthermore, the aforementioned cash box upper shell one-time forming mold, wherein the ejector comprises: a box body, the box body is fixed on the lower slide plate, a spring groove is provided in the box body, a second push spring is provided in the spring groove, and a ejector pin is slidably provided in the box body, one end of the ejector pin extends out of the box body and abuts against the sliding mold, and the other end of the ejector pin extends into the box body and abuts against the second push spring.
[0007] Furthermore, the aforementioned cash box upper shell one-time forming mold, wherein three push grooves are arranged on the front side of the sliding mold, a push core is slidably arranged in the push groove, an upper boss is arranged in the push groove, a lower boss is arranged on the top core, a spring hole connected with the push groove is arranged in the sliding mold directly below the push groove, a first push spring is arranged in the spring hole, the top of the first push spring is against the top core, and the top core extends upward from the sliding mold under the elastic force of the first push spring.
[0008] Furthermore, in the aforementioned cash box upper shell one-time forming mold, four positioning angle plates are arranged around the lower drag plate, and a guide slope is arranged on the top inner wall of the positioning angle plate.
[0009] Furthermore, the aforementioned cash box upper shell is a one-time forming mold, wherein the connection structure between the sliding mold and the lower drag plate is: a sliding block is respectively extended at the front and rear ends of the sliding mold, and a guide strip is respectively provided on the lower drag plate located at the front and rear sides of the sliding mold, and the guide strip is slidably engaged with the sliding block on the same side.
[0010] Furthermore, the aforementioned cash box upper shell one-time forming mold, wherein two bending limit plates are respectively arranged on the left and right sides of the lower drag plate, and an avoidance groove is respectively arranged on the front and rear ends of the outer wall of the sliding mold, and the two avoidance grooves are aligned one by one with the two bending limit plates on the same side.
[0011] Furthermore, the aforementioned cash box upper shell one-time forming mold, wherein four guide pillars are vertically arranged around the lower template, the lower drag plate is slidably clamped on the four guide pillars, four guide pillar seats are arranged on the upper template, guide pillar holes are arranged in the guide pillar seats, and each guide pillar is respectively adapted to a guide pillar hole in a guide pillar seat.
[0012] Furthermore, in the aforementioned cash box upper shell one-time forming mold, the first elastic member and the second elastic member are both return springs.
[0013] Furthermore, the aforementioned cash box upper shell one-time forming mold, wherein a lower pad is arranged between the punch and the lower mold plate, the front and rear side walls of the lower pad are respectively flush with the front and rear side walls of the punch, and a guide hole is opened on the lower drag plate, and the four inner side walls of the guide hole are respectively slidably fitted with the four side walls of the lower pad.
[0014] The advantages of the utility model are as follows: a movable elastic core plate is arranged on the upper template, and a front concave template, a rear concave template and two side concave templates are arranged around the elastic core plate, the front concave template on the upper template extends downward from the two side concave templates, and the two side concave templates extend downward from the rear concave template. In this way, when the metal material plate is stamped and bent, the front concave template first positions the front end of the metal material plate, and then the left and right side concave templates bend the left and right side edges of the metal material plate, and finally the rear concave template bends the rear side edge of the metal material plate, so that the rear side edge of the metal material plate can be prevented from interfering with the connecting snaps of the left and right sides, thereby realizing one-time stamping and forming; and when demolding, the two sliding dies will move upward and inward along the first wedge-shaped surface of the punch under the elastic force of the elastic top member, so that the two sliding dies no longer restrict the stamped upper shell body, thereby facilitating demolding. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of a one-step forming die for the upper shell of a cash box according to the utility model.
[0016] Figure 2 yes Figure 1 Schematic diagram of the connection structure between the middle and lower templates, punch, slide and lower slide.
[0017] Figure 3 yes Figure 1 Schematic diagram of the connection structure between the middle upper template, the core plate, the front concave template, the side concave template and the rear concave template.
[0018] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure.
[0019] Figure 5 yes Figure 4 Schematic diagram of the local enlarged structure in the A direction.
[0020] Figure 6 yes Figure 2 Schematic diagram of the cross-sectional structure of the connection structure between the middle top core and the sliding mold.
[0021] Figure 7 yes Figure 3 Schematic diagram of the cross-sectional structure.
[0022] Figure 8 yes Figure 2 Schematic diagram of the height positions between the front concave template, the side concave template and the rear concave template after removing the core plate.
[0023] Fig. 9 It is a schematic diagram of the position structure between the slide, lower slide and punch during stamping.
[0024] Fig.10 It is a schematic diagram of the position structure between the slide, lower slide and punch during demoulding.
[0025] Fig.11 The utility model is a schematic diagram of the three-dimensional structure of the upper shell of the cash box which is punched by the one-step forming die of the upper shell of the cash box. DETAILED DESCRIPTION
[0026] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.
[0027] like Figures 1 to 10 As shown, the one-time forming mold of the upper shell of the cash box described in the utility model comprises: an upper template 1 and a lower template 2, a core plate 11 is movably arranged on the upper template 1, a first elastic member 12 is arranged between the core plate 11 and the upper template 1, a reset spring is selected as the first elastic member 12 in this embodiment, a plurality of mounting holes are evenly distributed on the upper template 1 and the core plate 11, a reset spring is fixedly connected between each pair of two mounting holes aligned up and down as the first elastic member 12, a front concave template 13, a rear concave template 14 and two side concave templates 15 connected to the upper template 1 are arranged around the core plate 11, the four side walls of the core plate 11 are slidably fitted with the front concave template 13, the rear concave template 14 and the two side concave templates 15, the lower end wall of the core plate 11 is fitted with the front concave template The lower end wall of the template 13 is flush, the front concave template 13 extends downward from the side concave template 15, and the side concave template 15 extends downward from the rear concave template 14. Rounded corners are arranged on the inner side walls of the front concave template 13, the rear concave template 14 and the side concave template 15. A first inlay cavity is arranged on the inner side walls at the left and right ends of the front concave template 13, and a second inlay cavity is arranged on the inner side walls at the front ends of the two side concave templates 15. The first inlay cavities at the left and right ends of the front concave template 13 are respectively connected with the second inlay cavities of the two side concave templates 15, and an inlay 16 is inlaid between the connected first inlay cavity and the second inlay cavity. The inlay 16 is also provided with rounded corners. Four guide column seats 17 are arranged on the upper template 1, and guide column holes 171 are arranged in the guide column seats 17.
[0028] A punch 21 is provided on the lower template 2, and two first wedge-shaped surfaces 211 are symmetrically provided on the left and right sides of the punch 21. A lower pad 22 is provided between the punch 21 and the lower template 2, and the front and rear side walls of the lower pad 22 are flush with the front and rear side walls of the punch 21, respectively. A lower slide plate 23 is movably provided on the lower template 2, and a second elastic member 231 is provided between the lower template 2 and the lower slide plate 23. In this embodiment, a return spring is selected as the second elastic member 231. A plurality of mounting holes are evenly distributed on the lower template 2 and the lower slide plate 23, and a return spring is fixedly connected between each pair of two mounting holes aligned up and down as the second elastic member 231. A guide hole is opened on the lower slide plate 23, and the four inner walls of the guide hole are respectively connected to the lower pad The four side walls of the lower template 22 are slidably fitted, four guide pillars 24 are vertically arranged around the lower template 2, and the lower drag plate 23 is slidably clamped on the four guide pillars 24, each guide pillar 24 is respectively matched with a guide pillar hole 171 in a guide pillar seat 17, four positioning angle plates 3 are arranged around the lower drag plate 23, and a guide inclined surface is arranged on the top inner wall of the positioning angle plate 3, and two sliding molds 4 are symmetrically slidably arranged on the left and right sides of the lower drag plate 23, and a slider 41 is respectively extended at the front and rear ends of the sliding mold 4, and a guide pressure strip 42 is respectively arranged on the lower drag plate 23 located on the front and rear sides of the sliding mold 4, and the guide pressure strip 42 is slidably clamped with the slider 41 on the same side, and the sliding clamping structure between the guide pressure strip 42 and the slider 41 is symmetrical to the sliding The mold 4 plays a role of limiting and guiding. A second wedge-shaped surface 43 that slides with the first wedge-shaped surface 211 is provided on the side wall of the sliding mold 4 near the punch 21. Three push grooves 44 are provided on the front side of the sliding mold 4. A push core 45 is slidably provided in the push groove 44. An upper convex shoulder 441 is provided in the push groove 44. A lower convex shoulder 451 is provided on the push core 45. A spring hole 46 connected to the push groove 44 is provided in the sliding mold 4 located directly below the push groove 44. A first push spring 461 is provided in the spring hole 46. The top of the first push spring 461 abuts against the push core 45. The push core 45 extends upward from the sliding mold 4 under the elastic force of the first push spring 461, and is divided into the left and right sides of the lower drag plate 23. A spring-loaded ejector is separately provided, which presses against the sliding mold 4 on the same side through elastic force, and the spring-loaded ejector comprises: a box body 5, which is fixed on the lower slide plate 23, a spring groove is provided in the box body 5, a second push spring 51 is provided in the spring groove, a ejector pin 52 is slidably provided in the box body 5, one end of the ejector pin protrudes from the box body 5 and presses against the sliding mold 4, and the other end of the ejector pin 52 protrudes into the box body 5 and presses against the second push spring 51, two bending limit plates 6 are respectively provided on the left and right sides of the lower slide plate 23, and an avoidance groove 47 is respectively provided at the front and rear ends of the outer side wall of the sliding mold 4, and the two avoidance grooves 47 are aligned one by one with the two bending limit plates 6 on the same side to prevent the bending limit plates 6 from interfering with the sliding mold 4.
[0029] Under the elastic pushing action of the elastic push members on their respective corresponding sides, the second wedge surface 43 of the sliding mold 4 will always be in contact with the first wedge surface 211 of the punch 21. The lower drag plate 23 will drive the sliding mold 4 to move upward under the pushing action of the second elastic member 231. The sliding mold 4 will move upward and inward along the first wedge surface 211 of the punch 21 under the wedging action between the second wedge surface 43 and the first wedge surface 211, so that the two sliding molds 4 will move upward and inward and protrude upward from the punch 21.
[0030] The staff places the punched metal sheet on two slide molds 4 protruding upward from the punch 21. At the same time, the four corners of the metal sheet are slidably clamped in the four positioning angle plates 3 for positioning. Then the upper template 1 is lowered, and the four guide post holes 171 in the upper template 1 are slidably clamped on the four guide posts 24 respectively. The guide posts 24 cooperate with the guide post holes 17 to limit and guide the upper template 1. The elastic core plate 11 rests on the metal sheet and applies downward pressure to the two slide molds 4. After the slide mold 4 is subjected to the downward pressure, The upper mold 1 drives the core plate 11 to move downward and outward along the first wedge-shaped surface 211 of the punch 21, overcoming the elastic force of the elastic top piece, and driving the lower drag plate 23 to move downward together. In this process, only the core plate 11 is in contact with the metal sheet, and the metal sheet moves downward together with the slide 4. The four positioning angle plates 3 guide the metal sheet. When the slide 4 and the lower drag plate 23 move downward into place, the top wall of the slide 4 is flush with the top wall of the punch 21, and the upper mold 1 drives the core plate 11 to continue to move downward. At this time, the core plate 11 overcomes the first The elastic force of the elastic member 12 shrinks upward, and the front concave template 13, the side concave template 15 and the rear concave template 14 continue to move downward, forming a concave mold cavity between the front concave template 13, the rear concave template 14 and the two side concave templates 15. The front concave template 13 first contacts the metal sheet to position the front side of the metal sheet, and then the two side concave templates 15 bend the left and right sides of the metal sheet. The left and right sides of the metal sheet are first folded into 90 degrees and contact the bending limit plate 6 on the same side. The bending limit plate 6 is on the side of the same side. The side plays a limiting role to prevent the bending angle of the side from exceeding 90°. When the side concave template 15 bends the side of the metal sheet, the insert 16 between the front concave template 13 and the side concave template 15 can prevent the left and right sides of the metal sheet from being sheared with the front side when bending and causing a notch. Finally, the rear concave template 14 bends the rear side of the metal sheet, and then rests on the connecting snap-on joints of the two sides and maintains a 90° bend angle. When the upper template 1 moves downward into place, the metal sheet is stamped and bent to form a shape as shown in the figure. Fig.11 As shown in the upper shell, the left and right sides of the metal plate can be folded inward first to prevent the rear side from interfering with the connecting clips on the left and right sides.
[0031] When the metal sheet is stamped and bent into the upper shell, the upper template 1 moves upward, and the elastic core plate 11 pushes the upper shell out of the die cavity under the elastic force of the first elastic member 12. The two sliding dies 4 will move upward and inward under the pushing force of their respective elastic members, and the two sliding dies 4 will no longer be clamped on the left and right folded edges of the upper shell. At the same time, the top core 45 will push the upper shell upward under the elastic force of the first pushing spring 461 to facilitate demolding.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.
Claims
1. The cash box upper shell one-step forming mold includes: The upper template and the lower template are characterized in that: a core plate is movably arranged on the upper template, a first elastic member is arranged between the core plate and the upper template, a front concave template, a rear concave template and two side concave templates connected to the upper template are arranged around the core plate, the lower end wall of the core plate is flush with the lower end wall of the front concave template, the front concave template extends downward from the side concave template, and the side concave template extends downward from the rear concave template; a punch is arranged on the lower template, two first wedge-shaped surfaces are symmetrically arranged on the left and right sides of the punch, a lower drag plate is movably arranged up and down on the lower template, a second elastic member is arranged between the lower template and the lower drag plate, two sliding molds are symmetrically slidably arranged on the left and right sides of the lower drag plate, a second wedge-shaped surface slidably matched with the first wedge-shaped surface is arranged on the side wall of the sliding mold close to the punch, and an elastic top piece is respectively arranged on the left and right sides of the lower drag plate, and the elastic top piece rests on the sliding mold on the same side through elastic force.
2. The cash box upper shell one-step forming die according to claim 1, characterized in that: A first inlay cavity is respectively arranged on the inner side walls at the left and right ends of the front concave template, and a second inlay cavity is respectively arranged on the inner side walls at the front ends of the two side concave templates. The first inlay cavities at the left and right ends of the front concave template are respectively connected with the second inlay cavities of the two side concave templates, and an inlay is inlaid between the connected first inlay cavity and the second inlay cavity.
3. The cash box upper shell one-step forming die according to claim 1, characterized in that: The ejector member comprises: a box body, the box body is fixed on the lower slide plate, a spring groove is arranged in the box body, a second ejection spring is arranged in the spring groove, an ejector pin is slidably arranged in the box body, one end of the ejector pin extends out of the box body and abuts on the sliding mold, and the other end of the ejector pin extends into the box body and abuts on the second ejection spring.
4. The cash box upper shell one-step forming die according to claim 1, characterized in that: Three pushing grooves are arranged on the front side of the sliding mold, a pushing core is slidably arranged in the pushing groove, an upper boss is arranged in the pushing groove, a lower boss is arranged on the pushing core, a spring hole connected with the pushing groove is arranged in the sliding mold directly below the pushing groove, a first pushing spring is arranged in the spring hole, the top of the first pushing spring abuts against the pushing core, and the pushing core extends upward from the sliding mold under the elastic force of the first pushing spring.
5. The cash box upper shell one-step forming die according to claim 1, characterized in that: Four positioning angle plates are arranged around the lower drag plate, and a guide inclined surface is arranged on the top inner wall of the positioning angle plate.
6. The cash box upper shell one-step forming die according to claim 1, characterized in that: The connection structure between the sliding mold and the lower drag plate is as follows: a sliding block is extended at the front and rear ends of the sliding mold respectively, and a guide pressure strip is respectively arranged on the lower drag plate at the front and rear sides of the sliding mold, and the guide pressure strip is slidably engaged with the sliding block on the same side.
7. The cash box upper shell one-step forming die according to claim 1, characterized in that: Two bending limit plates are respectively arranged on the left and right sides of the lower drag plate, and an avoidance groove is respectively arranged on the front and rear ends of the outer wall of the sliding mold, and the two avoidance grooves are aligned one by one with the two bending limit plates on the same side.
8. The cash box upper shell one-step forming die according to claim 1, characterized in that: Four guide posts are vertically arranged around the lower template, the lower drag plate is slidably mounted on the four guide posts, four guide post seats are arranged on the upper template, guide post holes are arranged in the guide post seats, and each guide post is respectively matched with a guide post hole in a guide post seat.
9. The cash box upper shell one-step forming die according to claim 1, characterized in that: The first elastic member and the second elastic member are both return springs.
10. The cash box upper shell one-step forming die according to claim 1, characterized in that: A lower pad is arranged between the punch and the lower mold plate, and the front and rear side walls of the lower pad are flush with the front and rear side walls of the punch respectively. A guide hole is opened on the lower drag plate, and the four inner side walls of the guide hole are slidably fitted with the four side walls of the lower pad respectively.