Lower die holder and die device for stamping junction box with openings on two sides

Abstract

The utility model discloses a lower die holder for stamping a junction box with openings on two sides, which comprises a base and a bottom plate, wherein the lower part of the base is provided with a blanking space; a junction box trimming and punching station, a junction box reinforcing rib punching station, a junction box tapping station, a junction box punching and opening station and a junction box folding station are arranged on the bottom plate, the three pipe clamp trimming and punching stations, the three pipe clamp reinforcing rib punching stations and the three pipe clamp bending and blanking stations are used for machining pipe clamps. The two pipe clamp trimming and punching stations, the two pipe clamp reinforcing rib punching stations and the two pipe clamp bending and blanking stations are symmetrically arranged on the two sides of the bottom plate in the width direction of the bottom plate in a one-to-one correspondence mode. The other pipe clamp trimming and punching station, the other pipe clamp reinforcing rib punching station and the other pipe clamp bending and blanking station are located in the middle of the bottom plate. Production cost can be saved, the material utilization rate is improved, and production line benefits are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of junction box production, in particular to a lower die base and a die device for punching a double-sided opening junction box. Background Art

[0002] Junction boxes are a kind of electrical auxiliary material commonly used in decoration. They can protect and connect wires. Due to the complex and diverse environments for installing junction boxes, various types of junction boxes are also required to meet the limitations of installation conditions. Compared with the junction boxes with one-sided openings for mounting panels that are more common in daily life, junction boxes with double-sided openings can be used in combination, breaking through the limitations of conventional single-sided openings in the depth direction. Due to the special structure of the double-sided opening junction box, its processing mold is also different from that of the conventional junction box. For the stamping mold of the double-sided opening junction box, especially the design of the lower mold, in addition to meeting the basic requirements for processing the shape and structure of each part of the junction box, it is also necessary to consider production efficiency, production cost and other factors. Utility Model Content

[0003] The utility model is developed to solve the above-mentioned problem, and aims to provide a lower die base and a die device for stamping a double-sided opening junction box, which are helpful to improve production line efficiency and reduce production costs.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A lower die base for punching a double-sided opening junction box comprises a base with a blanking space at the bottom and a bottom plate arranged on the base, wherein a junction box trimming and punching station, a junction box reinforcement rib punching station, a junction box tapping station, a junction box punching and opening station and a junction box folding station for processing the double-sided opening junction box are arranged on the bottom plate, and three tube clamp trimming and punching stations, three tube clamp reinforcement rib punching stations and three tube clamp bending and blanking stations for processing the tube clamp are arranged, wherein:

[0006] Two tube clamp trimming and punching stations, two tube clamp reinforcement rib punching stations, and two tube clamp bending and blanking stations are symmetrically arranged one by one along the width direction of the bottom plate on both sides of the bottom plate, corresponding to the blank area between the two ends of the two adjacent cross-shaped junction box processing areas on the material strip; the remaining one tube clamp trimming and punching station, one tube clamp reinforcement rib punching station, and one tube clamp bending and blanking station are located in the middle of the bottom plate, corresponding to the blank area at the central rectangular opening of the junction box processing area on the material strip;

[0007] The pipe clamp trimming and punching station, the junction box trimming and punching station, the pipe clamp reinforcement rib stamping station, the junction box reinforcement rib stamping station, the pipe clamp bending and blanking station, the junction box tapping station, the junction box punching and opening station and the junction box folding station are arranged in sequence along the raw material conveying direction.

[0008] Furthermore, the tube clamp includes an arc section located in the middle and two straight plate sections respectively connected to the two ends of the arc section, and the straight plate section is provided with a tube clamp connecting hole through which the connecting piece can pass. The tube clamp trimming and punching station includes a plurality of first trimming punches for cutting out the side shape of the tube clamp and a plurality of first connecting hole punches for punching the tube clamp connecting holes. The plurality of first trimming punches are arranged in parallel in sequence along the width direction of the base plate, and the distance between two adjacent first trimming punches corresponds to the width of the tube clamp; the plurality of first connecting hole punches are grouped in pairs, and the first connecting hole punches in the same group correspond to the two tube clamp connecting holes at both ends of a tube clamp.

[0009] Furthermore, the arc segment has a tube clamp reinforcement rib extending along its length direction, and the tube clamp reinforcement rib is in the shape of a long strip protruding outward. The tube clamp reinforcement rib stamping station includes a plurality of first reinforcement rib dies corresponding to the shape of the tube clamp reinforcement rib, and the plurality of first reinforcement rib dies are arranged in sequence along the width direction of the base plate.

[0010] Furthermore, the tube clamp bending and blanking station includes two end trimming dies corresponding to the shapes of the tube clamp ends, a blanking groove, a telescopic cylinder corresponding to the bending shape of the arc section of the tube clamp, and a driving member for driving the telescopic cylinder to telescopically move in the blanking groove.

[0011] Furthermore, a panel mounting opening is provided on the top surface of the double-sided opening junction box, and the two side edges of the panel mounting opening have a plurality of ears extending symmetrically toward the middle, and threaded holes are provided on the ears. The junction box trimming and punching station includes a second trimming punch corresponding to the outer edge shape of the double-sided opening junction box when it is unfolded and a plurality of bottom hole punches for punching bottom holes of the threaded holes. The second trimming punch is composed of four half-side punches corresponding to the half-side shapes of the two side ends when the junction box is unfolded. The two half-side punches are symmetrical to each other in the length direction of the bottom plate, and are used to cooperate with the upper die seat to cut out the two halves of the same side end; in the width direction of the bottom plate, the two half-side punches are also symmetrical to each other, and are respectively used to cut out half of the edge shape of the two side ends.

[0012] Furthermore, the panel installation opening is provided with flat reinforcing ribs pressed on both side edges of the ears, and the junction box reinforcing rib stamping station includes two second reinforcing rib dies corresponding to the shape of the flat reinforcing ribs, and the two second reinforcing rib dies are symmetrical to each other in the width direction of the base plate.

[0013] Furthermore, a combined connection port is provided on the bottom surface of the double-sided opening junction box, strip connection holes and circular mounting holes are provided on both sides of the combined connection port, and a plurality of knock-out holes for the wires to pass through are provided on the side surfaces of the double-sided opening junction box, and the junction box punching and opening station includes a plurality of second connection hole punches respectively used for punching strip connection holes and circular mounting holes, a plurality of mounting hole punches, a plurality of knock-out hole punches corresponding to the knock-out holes, and a connection port punch for punching the combined connection port.

[0014] Furthermore, the junction box tapping station includes a tapping mechanism for tapping the bottom hole to obtain a threaded hole; the junction box folding station includes a folding mechanism for folding the semi-finished material sheet of the junction box into a box body.

[0015] A mold device comprises the above-mentioned lower mold base for stamping a double-sided opening junction box and an upper mold base matching the lower mold base for stamping a double-sided opening junction box.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The lower die base and die device for stamping a double-sided open junction box of the utility model skillfully combine the die required for producing a double-sided open junction box with the die required for producing a pipe clamp and arrange them reasonably, which can effectively save production line costs, reduce equipment floor space, improve material utilization, and enhance production line efficiency.

[0018] 2. Since the lower die base and die device for stamping the double-sided opening junction box have multiple stations, and the multiple stations correspond to different processing procedures, a single stamping stroke of the upper die base can simultaneously realize the processing of multiple junction boxes and pipe clamps at different stages, which can greatly improve production efficiency and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the position of the material strip on the lower die base for punching a double-sided opening junction box in an embodiment of the utility model;

[0020] Figure 2 It is a top view of a lower die base for punching a double-sided opening junction box in an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a double-sided opening junction box in an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a pipe clamp in an embodiment of the utility model.

[0023] Figure Number:

[0024] 1- double-sided opening junction box, 101- top surface, 1011- panel mounting port, 1012- ear, 1013- threaded hole, 1014- plane reinforcement rib, 102- bottom surface, 1021- combined connection port, 1022- bar connection hole, 1023- circular mounting hole, 103- side surface, 1031- knock-off hole, 1032- locking plate, 1033- extended edge;

[0025] 2- pipe clamp, 201- arc segment, 2011- pipe clamp reinforcement rib, 202- straight plate segment, 2021- pipe clamp connection hole;

[0026] 3- Material strip;

[0027] 11- base, 12- bottom plate;

[0028] 20-pipe clamp trimming and punching station, 21-first trimming punch, 22-first connecting hole punch;

[0029] 30-junction box trimming and punching station, 31-second trimming punch, 311-half punch, 32-bottom hole punch;

[0030] 40-tube clamp reinforcement rib punching station, 41-first reinforcement rib die;

[0031] 50-junction box reinforcement rib punching station, 51-second reinforcement rib die;

[0032] 60-tube clamp bending and blanking station, 61-end trimming die, 62-blank groove, 63-telescopic cylinder;

[0033] 70-junction box tapping station, 71-tapping mechanism;

[0034] 80-junction box punching opening station, 81-second connection hole punch, 82-installation hole punch, 83-knock-out hole punch, 84-connection port punch;

[0035] 90-junction box folding station, 91-folding mechanism. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the following embodiments are combined with the accompanying drawings to specifically explain the lower die base and die device for stamping a double-sided opening junction box of the utility model.

[0037] The mold device includes a lower mold base for stamping a double-sided open junction box and an upper mold base matching the lower mold base for stamping a double-sided open junction box. The upper mold base and the lower mold base for stamping a double-sided open junction box are arranged relatively to each other up and down. The upper mold base is raised and lowered under the action of a power mechanism to complete the mold opening / closing action, thereby realizing the stamping processing of the raw metal plate.

[0038] like Figure 3 As shown, the finished product of the double-sided opening junction box includes a rectangular box body folded from a metal sheet, and the two opposite faces along the depth direction of the box body are the top surface 101 and the bottom surface 102, and the other four faces are the side surfaces 103. The top surface 101 has a panel installation opening 1011, and the two side edges of the panel installation opening 1011 have a plurality of ears 1012 extending symmetrically toward the middle, and the ears 1012 are provided with threaded holes 1013. The panel installation opening 1011 is provided with a flat reinforcing rib 1014 pressed on the two side edges of the ears 1012, and the flat reinforcing rib 1014 is in a protruding shape toward the outside of the box body, extending along the edge of the panel installation opening 1011 and the ears 1012. The side surface 103 is provided with a plurality of knock-out holes 1031 for the wires to pass through. A combined connection port 1021 is provided on the bottom surface 102, and strip connection holes 1022 are provided at positions corresponding to the threaded holes 1013 on both sides of the combined connection port 1021, and circular mounting holes 1023 are provided near the strip connection holes 1022. The bottom surface 102 of the box body is integrally connected with four adjacent side surfaces 103, and the side surfaces 103 are folded vertically upward from the edge of the bottom surface 102; the side surfaces 103 are provided with locking pieces 1032 extending outward on the edge perpendicular to the bottom surface 102, and the locking pieces 1032 are folded to buckle the adjacent side surfaces 103, so that the four side surfaces 103 are connected in sequence to form a stable three-dimensional shape without deformation or disintegration. The top edge of the side surface 103 has an extended edge 1033, and the top surface 101 is formed by folding the extended edges 1033 of the four side surfaces 103 toward the middle of the box body and splicing them together, and the opening formed in the middle after the four extended edges 1033 are enclosed is the panel mounting port 1011.

[0039] When the double-sided open junction box 1 is unfolded and laid flat, it is in the shape of a cross as a whole, and there is a rectangular opening in the middle of the cross, namely the combined connection opening 1021. The raw material used in processing the double-sided open junction box 1 is a long strip of metal plate (referred to as the material strip 3). After the raw metal plate undergoes multiple processing steps such as punching and trimming, a semi-finished material sheet corresponding to the unfolded shape of the double-sided open junction box 1 is cut off, and then the semi-finished material sheet is folded into a three-dimensional box body. During processing, a plurality of cross-shaped junction box processing areas for making semi-finished material sheets are divided in the length direction of the material strip 3. Since there are blank areas between the ends of the cross and at the rectangular opening in the middle of the cross, a large amount of waste material remains on the material strip 3 after the semi-finished material sheet is cut off.

[0040] In order to improve material utilization, reduce resource waste, and lower production costs when processing a double-sided open junction box 1, this embodiment provides a lower die holder for punching a double-sided open junction box, which uses the spare part on the material strip 3 to simultaneously process the pipe clamp 2. The pipe clamp 2 can hold the pipe when laying the pipeline, and is usually fixed to the wall or the ground by a connector such as a nail. Figure 4As shown, the pipe clamp 2 processed in this embodiment is a double-sided pipe clamp, which is a long strip when unfolded and laid flat. The finished double-sided pipe clamp 2 includes an arc segment 201 located in the middle and two straight plate segments 202 connected to the two ends of the arc segment 201, respectively. The arc segment 201 has a pipe clamp reinforcement rib 2011 extending along its length direction, and the pipe clamp reinforcement rib 2011 is in the shape of a long strip protruding outward. The straight plate segment 202 is provided with a pipe clamp connection hole 2021 for screws and other connecting parts to pass through.

[0041] like Figure 1 , 2 As shown, the lower die base for stamping a double-sided open terminal box includes a base 11 with a blanking space at the bottom and a bottom plate 12 arranged on the base 11, and the bottom plate 12 is arranged with a terminal box trimming and punching station 30, a terminal box reinforcement rib stamping station 50, a terminal box tapping station 70, a terminal box punching and opening station 80 and a terminal box folding station 90 for processing the double-sided open terminal box 1, and three tube clamp trimming and punching stations 20, three tube clamp reinforcement rib stamping stations 40 and three tube clamp bending and blanking stations 60 for processing the tube clamp 2.

[0042] Among them, two tube clamp trimming and punching stations 20, two tube clamp reinforcement rib stamping stations 40 and two tube clamp bending and blanking stations 60 are respectively arranged symmetrically on both sides of the bottom plate 12 along the width direction of the bottom plate 12, corresponding to the blank area between the two side ends of two adjacent cross-shaped junction box processing areas on the material strip 3; the remaining one tube clamp trimming and punching station 20, one tube clamp reinforcement rib stamping station 40 and one tube clamp bending and blanking station 60 are located in the middle of the bottom plate 12, corresponding to the blank area at the central rectangular opening of the junction box processing area on the material strip 3.

[0043] Three pipe clamp trimming and punching stations 20, junction box trimming and punching stations 30, three pipe clamp reinforcement rib punching stations 40, junction box reinforcement rib punching stations 50, three pipe clamp bending and blanking stations 60, junction box tapping station 70, junction box punching and opening station 80 and junction box folding station 90 are arranged along the raw material conveying direction (i.e. Figure 1 The raw material conveying direction is parallel to the length direction of the bottom plate 12.

[0044] In this embodiment, the outer dimensions of the double-sided opening junction box 1 are 131mm*129.2mm*37.6mm (length*width*depth), and the combined connection port 1021 on the bottom surface 102 is 109.6mm long and 69.6mm wide. Since the pipe clamp 2 is smaller than the double-sided opening junction box 1, the two blank areas between the two ends of the adjacent cross-shaped junction box processing areas on the strip 3 and the blank area at the rectangular opening in the middle of the junction box processing area can be processed with four pipe clamps at the same time; in each blank area, the four pipe clamps are arranged at equal intervals along the width direction of the strip 3.

[0045] The tube clamp trimming and punching station 20 includes a plurality of first trimming punches 21 for cutting out the shape of the tube clamp side edges and a plurality of first connection hole punches 22 for punching the tube clamp connection holes 2021. In this embodiment, there are five first trimming punches 21, which are arranged in parallel in the width direction of the bottom plate 12. The distance between two adjacent first trimming punches 21 corresponds to the width of the tube clamp 2, and can cooperate with the upper die seat to cut out the shape of the edges on both sides of the tube clamp 2. There are eight first connection hole punches 22, which are arranged in groups of two. The first connection hole punches 22 in the same group correspond to the two tube clamp connection holes 2021 at both ends of a tube clamp 2.

[0046] The terminal box trimming and punching station 30 includes a second trimming punch 31 corresponding to the outer edge shape of the double-sided opening terminal box 1 when it is unfolded, and a plurality of bottom hole punches 32 for punching the bottom holes of the terminal box ear threaded holes 1013. In this embodiment, the second trimming punch 31 is composed of four half-side punches 311 corresponding to the half-side shapes of the two side ends of the double-sided opening terminal box 1 when it is unfolded. The two half-side punches 311 are symmetrical to each other in the length direction of the bottom plate 12, and cooperate with the upper die seat to cut out the two halves of the same side end; in the width direction of the bottom plate 12, the two half-side punches 311 are also symmetrical to each other, and cut out half of the edge shape of the two side ends respectively. Since the number of the terminal box ears 1012 is four, the corresponding number of bottom hole punches 32 for punching the ear threaded holes 1013 is also four.

[0047] The tube clamp reinforcement rib punching station 40 includes a plurality of first reinforcement rib dies 41 corresponding to the shape of the tube clamp reinforcement rib 2011. In this embodiment, the number of the first reinforcement rib dies 41 is four, and the four first reinforcement rib dies 41 are arranged in sequence along the width direction of the bottom plate 12. The first reinforcement rib dies 41 are in a long strip shape corresponding to the shape of the tube clamp reinforcement rib 2011.

[0048] The junction box reinforcement rib punching station 50 includes two second reinforcement rib dies 51 corresponding to the shape of the plane reinforcement rib 1014. In this embodiment, since there are two ears 1012 on both sides of the junction box panel installation opening 1011, the second reinforcement rib dies 51 corresponding to the shape of the plane reinforcement rib 1014 are π-shaped, and the two second reinforcement rib dies 51 are symmetrical to each other in the width direction of the bottom plate 12.

[0049] The tube clamp bending and blanking station 60 includes two end trimming dies 61 corresponding to the shape of the end of the tube clamp 2, a blanking groove 62, a telescopic cylinder 63 corresponding to the bending shape of the arc section 201 of the tube clamp, and a driving member (not shown in the figure) for driving the telescopic cylinder 63 to telescope and move in the blanking groove 62. In this embodiment, the telescopic cylinder 63 extends along the width direction of the bottom plate 12. When the telescopic cylinder 63 is extended, it is located in the middle of the blanking groove 62, and can cooperate with the upper die seat to punch out the curvature of the arc section 201 in the middle of the tube clamp 2. The driving member is a cylinder, and the telescopic cylinder 63 is driven by the driving member to shrink to one side of the blanking groove 62, so that the formed tube clamp 2 passes through the blanking groove 62 and falls below the base 11.

[0050] The terminal box punching and opening station 80 includes a plurality of second connection hole punches 81, a plurality of installation hole punches 82, which are respectively used to punch the strip connection holes 1022 and the circular installation holes 1023 on the bottom surface 102 of the terminal box, a plurality of knock-out hole punches 83 corresponding to the knock-out holes 1031 on the side surface 103 of the terminal box, and a connection port punch 84 for punching the combined connection port 1021. In this embodiment, two strip connection holes 1022 and two circular installation holes 1023 are respectively provided on both sides of the combined connection port 1021 on the bottom surface 102 of the double-sided opening terminal box, and a knock-out hole 1031 is respectively provided on the four side surfaces 103. Correspondingly, in the terminal box punching and opening station 80, the connection port punch 84 is a rectangle corresponding to the edge shape of the combined connection port 1021, and is located in the middle of the bottom plate 12. The two second connection hole punches 81 and the two installation hole punches 82 are symmetrically arranged on both sides of the connection port punch 84 , and the four knock-out hole punches 83 are arranged around the connection port punch 84 .

[0051] The terminal box tapping station 70 includes a tapping mechanism 71 for tapping the bottom hole to obtain the threaded hole 1013. The terminal box folding station 90 includes a folding mechanism 91 for folding the semi-finished material sheet of the terminal box into a box body. In this embodiment, the tapping mechanism 71 and the folding mechanism 91 both adopt the existing structure. The focus of the utility model is the combination and reasonable layout of the terminal box mold and the pipe clamp mold, so the specific structure of the tapping mechanism 71 and the folding mechanism 91 will not be repeated.

[0052] In the die device, an upper die base matching with a lower die base for punching a double-sided opening junction box is arranged above the lower die base in a manner that can be raised and lowered by a power mechanism, and the upper die base has a punch pin matching with a concave die of the lower die base and a concave die matching with a convex die of the lower die base. During the processing, each time the upper die base completes a punching operation driven by the power mechanism, the feeding device conveys the raw material strip 3 forward by a distance equal to the unfolded length of the junction box. The front end of the material strip 3 first passes through three tube clamp trimming and punching stations 20 and a junction box trimming and punching station 30, punching out the side shape of the tube clamp 2, the tube clamp connection holes 2021 at both ends of the tube clamp 2, and cutting out the edge shape of the ends of the junction box on both sides and the bottom holes of the threaded holes 1013 of the ears 1012; then passes through the tube clamp reinforcement rib punching station 40 and the junction box reinforcement rib punching station 50, pressing out the tube clamp reinforcement rib 2011 and the plane reinforcement rib 1014 of the top surface 101 of the junction box; then passes through the tube clamp bending and blanking station 60, cutting out the shapes of the two ends of the tube clamp, separating the edge of the tube clamp 2 from the material strip 3, and the middle of the tube clamp is supported by the telescopic cylinder 63 and pressed out into a curved arc that fits the upper surface of the telescopic cylinder 63 The telescopic cylinder 63 is driven by the driving member to retract to one side of the blanking groove 62, and the formed pipe clamp 2 falls to the bottom of the base 11 and is collected; the front end of the material strip 3 continues to enter the tapping station 70 of the junction box, and the bottom holes of the ear 1012 are tapped to obtain the threaded holes 1013; then it enters the punching and opening station 80 of the junction box to punch out the combined connecting port 1021 on the bottom surface 102 of the junction box and the strip connecting holes 1022 and the circular mounting holes 1023 on both sides of the combined connecting port 1021, and press out the knock-out holes 1031 on the side wall of the junction box; finally, the front end of the material strip 3 enters the folding station 90 of the junction box, cuts off the cross-shaped semi-finished material sheet of the junction box, and is finally folded into a three-dimensional box body.

[0053] Since the lower die base and die device for stamping the double-sided open junction box have multiple workstations, and the multiple workstations correspond to different processing procedures, in the actual production process, a single stamping stroke of the upper die base can simultaneously realize the processing of multiple double-sided open junction boxes and pipe clamps at different stages, which can greatly improve production efficiency and reduce production costs.

[0054] The lower die base and die device for stamping a double-sided opening junction box of the utility model skillfully combine the die required for pipe clamp production and the die required for junction box processing and arrange them reasonably, which can effectively save production line costs, improve material utilization, and enhance production line efficiency.

[0055] The above implementation modes are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A lower die base for stamping a double-sided opening junction box, characterized in that: It includes a base with a blanking space at the bottom and a bottom plate arranged on the base, on which are arranged a junction box trimming and punching station, a junction box reinforcement rib punching station, a junction box tapping station, a junction box punching and opening station and a junction box folding station for processing a double-sided opening junction box, and three tube clamp trimming and punching stations, three tube clamp reinforcement rib punching stations and three tube clamp bending and blanking stations for processing a tube clamp, wherein: Two of the tube clamp trimming and punching stations, two of the tube clamp reinforcement rib punching stations, and two of the tube clamp bending and blanking stations are symmetrically arranged one by one along the width direction of the bottom plate on both sides of the bottom plate, corresponding to the blank area between the two side ends of two adjacent cross-shaped junction box processing areas on the material strip; the remaining one of the tube clamp trimming and punching stations, one of the tube clamp reinforcement rib punching stations, and one of the tube clamp bending and blanking stations are located in the middle of the bottom plate, corresponding to the blank area at the central rectangular opening of the junction box processing area on the material strip; The tube clamp trimming and punching station, the junction box trimming and punching station, the tube clamp reinforcement rib punching station, the junction box reinforcement rib punching station, the tube clamp bending and blanking station, the junction box tapping station, the junction box punching and opening station and the junction box folding station are arranged in sequence along the raw material conveying direction.

2. The lower die base for punching a double-sided opening junction box according to claim 1, characterized in that: The pipe clamp comprises an arc section in the middle and two straight plate sections connected to the two ends of the arc section respectively. The straight plate sections are provided with pipe clamp connection holes through which the connector can pass. The pipe clamp trimming and punching station comprises a plurality of first trimming punches for cutting out the side shape of the pipe clamp and a plurality of first connection hole punches for punching the connection holes of the pipe clamp. A plurality of the first trimming convex dies are arranged in parallel in sequence along the width direction of the bottom plate, and the distance between two adjacent first trimming convex dies corresponds to the width of the pipe clamp; The plurality of first connection hole convex dies are grouped in pairs, and the first connection hole convex dies in the same group respectively correspond to the two tube clamp connection holes at both ends of a tube clamp.

3. The lower die base for punching a double-sided opening junction box according to claim 2, characterized in that: The arc segment is provided with a pipe clamp reinforcement rib extending along its length direction, and the pipe clamp reinforcement rib is in the shape of a long strip protruding outwards. The tube clamp reinforcement rib punching station comprises a plurality of first reinforcement rib dies corresponding to the shape of the tube clamp reinforcement rib, and the plurality of first reinforcement rib dies are arranged in sequence along the width direction of the bottom plate.

4. The lower die base for punching a double-sided opening junction box according to claim 2, characterized in that: The tube clamp bending and blanking station includes two end trimming dies corresponding to the shapes of the tube clamp ends, a blanking groove, a telescopic cylinder corresponding to the bending shape of the arc section of the tube clamp, and a driving member for driving the telescopic cylinder to telescope in the blanking groove.

5. The lower die base for punching a double-sided opening junction box according to claim 1, characterized in that: The top surface of the double-sided opening junction box is provided with a panel installation opening, and the two side edges of the panel installation opening are provided with a plurality of ears extending symmetrically toward the middle, and the ears are provided with threaded holes. The junction box trimming and punching station includes a second trimming punch corresponding to the outer edge shape of the double-sided opening junction box when it is unfolded and a plurality of bottom hole punches for punching the bottom holes of the threaded holes. The second trimming punch is composed of four half-side punches corresponding to the half-side shapes of the two side ends when the junction box is unfolded. The two half-side punches are symmetrical to each other in the length direction of the base plate and are used to cooperate with the upper die base to cut out the two halves of the same side end; in the width direction of the base plate, the two half-side punches are also symmetrical to each other and are used to cut out half of the edge shapes of the two side ends respectively.

6. The lower die base for punching a double-sided opening junction box according to claim 5, characterized in that: The panel installation opening is provided with planar reinforcing ribs on both side edges of the ear portion. The junction box reinforcement rib punching station comprises two second reinforcement rib dies corresponding to the shape of the planar reinforcement rib, and the two second reinforcement rib dies are symmetrical to each other in the width direction of the bottom plate.

7. The lower die base for punching a double-sided opening junction box according to claim 1, characterized in that: A combined connection port is provided on the bottom surface of the double-sided opening junction box, and strip-shaped connection holes and circular mounting holes are provided on both sides of the combined connection port. The side of the double-sided opening junction box is provided with a plurality of knock-out holes for the wires to pass through. The junction box punching and opening station includes a plurality of second connection hole punches respectively used for punching the strip connection holes and the circular mounting holes, a plurality of mounting hole punches, a plurality of knock-out hole punches corresponding to the knock-out holes, and a connection port punch for punching the combined connection port.

8. The lower die base for punching a double-sided opening junction box according to claim 5, characterized in that: The terminal box tapping station includes a tapping mechanism for tapping the bottom hole to obtain the threaded hole; The junction box folding station comprises a folding mechanism for folding the semi-finished material sheet of the junction box into a box body.

9. A mold device, characterized in that: include: A lower die base for punching a double-sided opening junction box as claimed in any one of claims 1 to 8 and an upper die base matching the lower die base for punching a double-sided opening junction box.

Images