A double-inlet double-outlet cold press

Abstract

This utility model discloses a double-inlet, double-outlet cold press, in which each moving cold press plate has two symmetrical feeding areas. Both the stationary and moving cold press plates have two refrigerant pipes corresponding to the feeding areas. The inlet and outlet of the refrigerant pipes on the same cold press plate are arranged in an "inlet-outlet-inlet-out" sequence, while the inlet and outlet sequences of adjacent cold press plates are reversed. This utility model achieves "double inlet, double outlet" through the double feeding areas, improving production efficiency to meet mass production needs. Simultaneously, through a special refrigerant pipe layout design (the inlet and outlet of the two refrigerant pipes on the same cold press plate are arranged in an "inlet-outlet-inlet-out" sequence, and the inlet and outlet sequences of adjacent cold press plates are reversed), the refrigerant flow direction within the same cold press plate is consistent, while the refrigerant flow direction of adjacent cold press plates is opposite, forming a temperature complementary effect, avoiding temperature imbalance in the cold press plates, and thus improving product processing quality.

Description

Technical Field

[0001] This utility model belongs to the field of cold pressing technology, and in particular relates to a double-inlet double-outlet cold press. Background Technology

[0002] In the production of laminated products such as PCBs (Printed Circuit Boards), the cold pressing process is a crucial step in ensuring the bonding strength, flatness, and dimensional stability of the product layers. Currently, cold presses generally employ a "single-in, single-out" operating mode, meaning that only a single row of products (single or multiple layers in the vertical direction, with each layer supported by a separate carrier board) can be cold-pressed at a time. This makes it difficult to meet the demands of large-scale mass production. Utility Model Content

[0003] Based on this, and to address the aforementioned technical problems, a double-inlet double-outlet cold press is provided.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A double-inlet, double-outlet cold press includes a static cold press plate, at least one dynamic cold press plate, a driving mechanism for pushing the at least one dynamic cold press plate towards the static cold press plate in a vertical direction, and a frame for allowing the dynamic cold press plate to slide vertically. The dynamic cold press plate is characterized in that its upper surface has two symmetrically arranged feeding areas. Both the static and dynamic cold press plates have two refrigerant pipes that correspond vertically to the two feeding areas. The inlet and outlet of each refrigerant pipe are located behind the corresponding static or dynamic cold press plate. The refrigerant pipe inlet and outlet arrangement sequence of the same cold press plate is inlet-outlet-inlet-outlet, and the refrigerant pipe inlet and outlet arrangement sequence of two adjacent cold press plates are opposite.

[0006] The beneficial effects of this utility model are as follows:

[0007] 1. Improved production efficiency: By setting two symmetrical feeding areas on the left and right sides of each dynamic cooling platen, and two refrigerant pipelines corresponding one-to-one with the two feeding areas, a "double in, double out" operation mode can be achieved. Compared with traditional single in, single out equipment, it can process two rows of products on the left and right sides simultaneously, improving efficiency and meeting the needs of large-scale mass production.

[0008] 2. Optimized Temperature Uniformity: The presence of two feeding zones necessitates lengthening both the static and dynamic cold pressing plates, potentially leading to temperature imbalance. This patent addresses this issue with a unique refrigerant piping design (the inlet and outlet of the two refrigerant pipes on the same cold pressing plate are arranged in an "in-out-in-out" sequence, with the inlet and outlet sequences of adjacent cold pressing plates reversed). This ensures consistent refrigerant flow within the same cold pressing plate, while opposing flow directions occur between adjacent plates. This structure creates a temperature complementarity effect, preventing temperature imbalance and improving product processing quality. Attached Figure Description

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0010] Figure 1 A three-dimensional structural diagram of a double-inlet double-outlet cold press provided for an embodiment of this utility model;

[0011] Figure 2 This is a side view of the frame structure according to an embodiment of the present utility model;

[0012] Figure 3 This is a front view structural diagram of the frame according to an embodiment of the present utility model;

[0013] Figure 4 This is a rear view structural diagram of the frame according to an embodiment of the present utility model;

[0014] Figure 5 This is a schematic diagram of the cooperation structure between the column and the static cooling plate in an embodiment of the present utility model;

[0015] Figure 6 This is a schematic diagram of the cooperative structure of the column and the bottom dynamic cold pressing plate in an embodiment of this utility model;

[0016] Figure 7 This is a schematic diagram of the cooperative structure of the column and the bottom layer of the present utility model.

[0017] Figure 8 This is a cross-sectional view of the column according to an embodiment of the present utility model;

[0018] Figure 9 This is a cross-sectional view of the static cooling platen according to an embodiment of the present utility model;

[0019] Figure 10 This is a three-dimensional structural diagram of the dynamic cold-pressing plate other than the bottom layer in an embodiment of this utility model;

[0020] Figure 11 This is a cross-sectional view of the bottom layer of the dynamic cold-pressing plate in this embodiment of the present invention;

[0021] Figure 12 This is a three-dimensional structural diagram of the elastic pressure strip according to an embodiment of the present utility model;

[0022] Figure 13 This is a partial vertical sectional view of the elastic pressure strip according to an embodiment of the present utility model. Detailed Implementation

[0023] The embodiments of this utility model will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of this utility model. The following corresponding embodiments are only for clearly illustrating the utility model content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the described embodiments. Any obvious variations or modifications that fall within the technical concept and utility model content of this utility model are also within the protection scope of this utility model.

[0024] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a double-inlet double-outlet cold press, including a frame 1100, a static cold press plate 1200, a multi-layer dynamic cold press plate 1300, and a drive mechanism 1400.

[0025] like Figure 2 and Figure 3 As shown, the frame 1100 includes a base plate 1110 and four columns 1120 respectively fixed to the four corners of the base plate 1110 by bolts. The base plate 1110 has supporting feet 1130 on its lower side. See [reference needed] Figure 1 ,like Figure 3 As shown, the upper surface of the base plate 1110 is provided with multiple support members 1111 and proximity switches 1112. The support member 1111 is a screw, which is threadedly connected to the upper surface of the base plate 1110 and can be adjusted in height.

[0026] The upper circumferential surface of each column 1120 has an upper step for supporting the static cooling plate 1200, and in addition, as Figure 7 and Figure 8 As shown, each column 1120 also has a grooved track 1121 running vertically on its circumferential surface. Taking the left column 1120 as an example, its grooved track 1121 has multiple support surfaces 1121a arranged vertically and vertically on its left inner wall. The multiple support surfaces 1121a correspond one-to-one with the other dynamic cold pressing plates except for the bottom dynamic cold pressing plate, and the multiple support surfaces 1121a are distributed in a stepped manner in the left-right direction. See [reference needed]. Figure 7 .

[0027] The four corners of the static cooling plate 1200 are penetrated by the upper ends of four columns 1120, supported on the upper steps of the columns 1120, and locked downwards to the upper steps by nuts 1122. See [reference needed]. Figure 5 .

[0028] like Figure 6As shown, the bottom dynamic cold plate 1300 is penetrated by four columns 1120, forming an upper and lower sliding fit, and is supported by multiple support members 1111. By adjusting the height of the support members 1111, the initial height of the bottom dynamic cold plate 1300 can be adjusted.

[0029] like Figure 3 As shown, the lower surface of the bottom dynamic cooling plate 1300 is provided with detection bolts 1310 corresponding to the proximity switch 1112, which are used to determine whether the bottom dynamic cooling plate 1300 is in place.

[0030] like Figure 3 As shown, to ensure that all cold-pressed plates do not arch during cold pressing, reinforcing members 1140 are respectively provided on the upper surface of the static cold-pressed plate 1200 and the lower surface of the bottom dynamic cold-pressed plate 1300. In this embodiment, the reinforcing member 1140 is composed of two I-beams arranged front and rear. See [reference needed]. Figure 2 .

[0031] Except for the bottom dynamic cold press plate 1300, such as Figure 10 As shown, each of the remaining dynamic cold-press plates 1300 has four supported portions 1320 on its left and right sides, corresponding one-to-one with the four columns 1120. The supported portions 1320 use horizontal bolts, which extend horizontally into the grooved tracks 1121 of the corresponding columns 1120 to form a sliding fit. At the same time, the supported portions are supported on the corresponding support surfaces 1121a. See [reference needed]. Figure 7 This allows the multi-layer dynamic cold press plates 1300 to be initially spaced vertically, facilitating material feeding. Furthermore, because the multiple support surfaces 1121a are arranged in a stepped pattern, interference does not occur when the multi-layer dynamic cold press plates 1300 slide vertically. Additionally, as... Figure 2 , Figure 4 and Figure 7 As shown, the left and right sides of some dynamic cold pressing plates 1300 also have four clamping members 1330 corresponding to the four columns 1120. The clamping members 1330 clamp the corresponding columns 1120 and are used to tension the dynamic cold pressing plate 1300 to prevent it from arching and deforming during cold pressing. Of course, clamping members 1330 can also be set on the left and right sides of all dynamic cold pressing plates 1300 except the bottom dynamic cold pressing plate 1300.

[0032] The upper surface of the dynamic cold press plate 1300 has two symmetrically arranged feeding areas. Four guide wheels 1340 are provided on the front edge of the dynamic cold press plate 1300 to guide the two feeding plates to the two feeding areas. (See [reference]) Figure 10 .

[0033] like Figure 10As shown, each feeding area has two symmetrically arranged strip grooves 1350 in the left-right and front-back directions. Each strip groove 1350 is provided with an elastic pressure strip 1360 to prevent the feeding plate from directly contacting and wearing the upper surface of the dynamic cooling plate 1300 during feeding. Figure 12 As shown, the elastic pressure strip 1360 includes a pressure strip body 1361, multiple fixing bolts 1362, and multiple elastic self-recovering components 1363.

[0034] The pressure strip body 1361 is made of wear-resistant steel and is compatible with the strip groove 1350. The upper surface of the end is beveled to facilitate the feeding plate to be guided onto the pressure strip body 1361.

[0035] The pressure strip body 1361 has multiple through holes 1361a evenly distributed along the front-back direction, and the through holes 1361a are stepped holes.

[0036] The number of fixing bolts 1362 is the same as the number of through holes 1361a, and they respectively pass through the corresponding through holes 1361a and are threaded to the bottom of the slot 1350. The upper end of the fixing bolt 1362 has a limiting cap 1362a, which abuts against the stepped surface of the stepped hole. See [reference needed]. Figure 13 .

[0037] The number of elastic self-recovering parts 1363 is the same as the number of through holes 1361a. Multiple elastic self-recovering parts 1363 are provided between the pressure strip body 1361 and the bottom of the groove, and are respectively passed through by the fixing bolts 1362.

[0038] Among them, the elastic self-recovering component 1363 adopts a leaf spring, which can ensure that the contact surface with the bottom of the groove is horizontal after being compressed.

[0039] During loading, the loading carrier plate is guided onto the pressure strip body 1361. Under the gravity of the carrier plate and the product on it, the elastic self-recovering component 1363 is compressed, and the pressure strip body 1361 is pressed down into the strip groove 1350 from its original position, so that the carrier plate contacts the upper surface of the dynamic cooling plate 1300. During unloading, under the action of the elastic self-recovering component 1363, the pressure strip body 1361 is bounced upward and returns to its original position under the constraint of the limit cap 1362a, preventing the pressure strip body 1361 from being bounced away from the fixing bolt 1362.

[0040] Each dynamic cooling plate 1300 has two refrigerant pipes 1370 (in an S-shape) that correspond one-to-one with its two upper and lower feeding areas. See [link / reference]. Figure 11 Correspondingly, the internal structure of the static cooling plate 1200 also has two refrigerant pipes 1210, see [link / reference]. Figure 9 The two refrigerant pipes 1210 correspond one-to-one with the two feeding areas on the left and right sides of the top dynamic cooling plate 1300.

[0041] like Figure 4 As shown, the inlet 1371 and outlet 1372 of the two refrigerant lines 1370 are located on the rear side of the corresponding dynamic cooling platen 1300, and the inlet 1211 and outlet 1212 of the two refrigerant lines 1210 are located on the rear side of the static cooling platen 1200. The inlet 1371 and outlet 1372, as well as the inlet 1211 and outlet 1212, are connected to the refrigerant supply system 2.

[0042] In the left-right direction, the refrigerant pipe inlet and outlet arrangement sequence for the same cold-press plate is inlet-outlet-inlet-outlet, and the refrigerant pipe inlet and outlet arrangement sequence for two adjacent cold-press plates is reversed. For example... Figure 4 As shown, assuming the refrigerant pipe inlet and outlet arrangement sequence of the static cooling platen 1200 from left to right is: inlet 1211 of the left refrigerant pipe 1210, outlet 1212 of the left refrigerant pipe 1210, inlet 1211 of the right refrigerant pipe 1210, outlet 1212 of the right refrigerant pipe 1210, the refrigerant pipe inlet and outlet arrangement sequence of the next dynamic cooling platen 1300 adjacent to the static cooling platen 1200 from left to right is: outlet 1372 of the left refrigerant pipe 1370. The refrigerant pipe inlet 1371 on the left side of refrigerant pipe 1370, the outlet 1372 on the right side of refrigerant pipe 1370, and the refrigerant pipe outlet 1371 on the right side of refrigerant pipe 1370 are arranged in the following order from left to right: refrigerant pipe inlet 1371 on the left side of refrigerant pipe 1370, outlet 1372 on the left side of refrigerant pipe 1370, refrigerant pipe inlet 1371 on the right side of refrigerant pipe 1370, and so on.

[0043] Based on the above structure, the refrigerant flow direction in the two refrigerant pipes on the same cold press plate is the same, either from left to right or from right to left. However, the refrigerant flow direction in two adjacent cold press plates is opposite. This allows the temperature on each cold press plate to compensate for each other and achieve balance during cold pressing, thus improving the processing quality.

[0044] The drive mechanism 1400 is used to push each dynamic cooling plate 1300 onto the static cooling plate 1200 from bottom to top. In this embodiment, the drive mechanism 1400 is a hydraulic cylinder, supplied with oil by an oil supply system. It is located below the base plate 1110, and its output end passes upward through the base plate 1110 and connects to the center of the bottom dynamic cooling plate 1300. See [reference needed]. Figure 2 and Figure 3 .

[0045] During operation, the static cold pressing plate 1200 and the multi-layer dynamic cold pressing plate 1300 are initially positioned vertically. First, the feeding mechanism simultaneously delivers the hot-pressed sheets, supported by carrier plates on both sides, to the left and right feeding areas of the multi-layer dynamic cold pressing plate 1300. Then, the refrigerant supply system 2 and the oil supply system are activated. When each cold pressing plate reaches its set temperature, the drive mechanism 1400 pushes the multi-layer dynamic cold pressing plate 1300 onto the static cold pressing plate 1200, thereby applying pressure to each layer of hot-pressed sheets to achieve cold pressing. After cold pressing is completed, the refrigerant supply system 2 and the oil supply system are shut off, and the multi-layer dynamic cold pressing plate 1300 returns to its initial position. Finally, the unloading mechanism simultaneously removes the cold-pressed sheets from both sides of the carrier plates.

[0046] As can be seen from the above, the beneficial effects of the double-inlet double-outlet cold press provided by this utility model embodiment are as follows:

[0047] 1. Improved production efficiency: By setting two symmetrical feeding areas on the left and right sides of each dynamic cooling platen, and two refrigerant pipelines corresponding one-to-one with the two feeding areas, a "double in, double out" operation mode can be achieved. Compared with traditional single in, single out equipment, it can process two rows of products on the left and right sides simultaneously, improving efficiency and meeting the needs of large-scale mass production.

[0048] 2. Optimized Temperature Uniformity: The presence of two feeding zones necessitates lengthening both the static and dynamic cold pressing plates, potentially leading to temperature imbalance. This patent addresses this issue with a unique refrigerant piping design (the inlet and outlet of the two refrigerant pipes on the same cold pressing plate are arranged in an "in-out-in-out" sequence, with the inlet and outlet sequences of adjacent cold pressing plates reversed). This ensures consistent refrigerant flow within the same cold pressing plate, while opposing flow directions occur between adjacent plates. This structure creates a temperature complementarity effect, preventing temperature imbalance and improving product processing quality.

[0049] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A double-action cold press comprising a stationary cold platen, at least one movable cold platen, a drive mechanism for pushing the at least one movable cold platen toward the stationary cold platen in a vertical direction, and a frame for allowing the movable cold platen to slide vertically, characterized in that, Each dynamic cold press plate has two symmetrically arranged feeding areas on its upper surface. Both the static and dynamic cold press plates have two refrigerant pipes that correspond one-to-one with the two feeding areas. The inlet and outlet of the two refrigerant pipes are located on the rear side of the corresponding static or dynamic cold press plate. The refrigerant pipe inlet and outlet arrangement order of the same cold press plate is inlet-outlet-inlet-outlet, and the refrigerant pipe inlet and outlet arrangement order of two adjacent cold press plates is opposite.

2. A double in double out cold press according to claim 1, characterized in that, The frame includes a base plate and four columns fixed at the four corners of the base plate. The static cold plate is fixed to the upper end of the four columns, and the dynamic cold plate is slidably engaged with the four columns.

3. A double in double out cold press according to claim 2, wherein, The upper end of the column passes through the static cooling plate, and the upper end of the column has an upper step on its circumference to support the static cooling plate. The static cooling plate is fixed on the upper step by a nut.

4. A double in double out cold press according to claim 2, wherein, The dynamic cold press plate is multi-layered. The bottom dynamic cold press plate is penetrated by the four columns to form a sliding fit and is supported by multiple support members on the base plate. Each of the remaining dynamic cold press plates has four supported parts on its left and right sides, corresponding to the four columns. Each column has a groove-shaped track in the vertical direction into which the corresponding supported part extends to form a sliding fit. The inner wall surface of the groove-shaped track opposite to the supported part has multiple support surfaces arranged at equal intervals. The multiple support surfaces correspond one-to-one with the remaining dynamic cold press plates other than the bottom dynamic cold press plate and are distributed in a stepped manner in the left and right direction. The supported part is supported on the corresponding support surface.

5. A double in double out cold press according to claim 4, wherein, The support component is a height-adjustable screw.

6. A double in double out cold press according to claim 4, wherein, All or some of the remaining dynamic cold pressing plates, excluding the bottom dynamic cold pressing plate, have four clamping members on their left and right sides that correspond one-to-one with the four columns. The clamping members are clamped to the outside of the corresponding columns.

7. A double-inlet, double-outlet cold press according to claim 1, characterized in that, Each feeding area has two symmetrically arranged strip grooves in the left-right and front-back direction. Each strip groove is provided with an elastic pressure strip. The elastic pressure strip includes a pressure strip body that is pressed into the strip groove during feeding, fixing bolts, and elastic self-recovering components. The pressure strip body is adapted to the strip groove and has multiple through holes evenly distributed in the front-back direction. The number of fixing bolts is the same as the number of through holes, and they are threaded to the bottom of the strip groove through the corresponding through holes. The number of elastic self-recovering components is the same as the number of through holes. The multiple elastic self-recovering components are all located between the pressure strip body and the bottom of the groove, and are respectively passed through by the fixing bolts one by one.

8. A double in double out cold press according to claim 7, wherein, The through hole is a stepped hole, and the upper end of the fixing bolt has a limiting cap, which abuts against the stepped surface of the stepped hole.

9. A double in double out cold press according to claim 7, wherein, The elastic self-recovering component is a leaf spring.

10. A double in double out cold press according to claim 4, wherein, The upper surface of the static cold platen is provided with a reinforcing member, and the lower surface of the bottom dynamic cold platen is provided with a reinforcing member.

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