A forming device for producing compressed biscuits

Abstract

The present invention relates to a forming device for producing compressed biscuits, and belongs to the technical field of compressed biscuit production. A sealing block is provided. When the device completes the production of the compressed biscuits, a lower mold cylinder controls the lower mold to move toward the bottom. Since the position of a connecting rod does not change, the position of the sealing block connected thereto does not change either, and relative movement occurs between the lower mold shell and the sealing block. Such a setting enables the sealing block to push out the formed biscuits in the sealing groove. In addition, since the sealing block releases its sealing cooperation relationship with the sealing groove, biscuit crumbs in the sealing groove will flow out of the sealing groove through the bottom of the sealing groove, ensuring that when new biscuits are produced next, there is no biscuit crumbs left on the side wall of the sealing groove.

Description

Technical Field

[0001] The invention belongs to the technical field of compressed biscuit production, and particularly relates to a forming device for compressed biscuit production. Background Art

[0002] Compressed biscuits are made of wheat flour, sugar, oil, and dairy products as the main raw materials. They are mixed with cold powder, roller baked, cooled, crushed, and mixed. Other auxiliary materials such as dried fruits and meat floss can be added and compressed. Existing factories all use forming devices for compressed biscuit production to speed up the production of compressed biscuits.

[0003] For example, the utility model patent with patent authorization announcement number: CN217471114U discloses a compressed biscuit forming device, including an upper mold arranged up and down and a lower mold that can move up and down; the upper mold is provided with a plurality of compression grooves that penetrate the upper mold and are arranged in an array, the upper surface of the lower mold is provided with forming grooves arranged opposite to each compression groove, the bottom wall of the forming groove is provided with an ejection block, and the lower end of the ejection block is provided with an elastic member that elastically supports the ejection block; the utility model can realize the extrusion forming of the compressed biscuit raw material by moving the upper mold and the lower mold up and down, and the lower mold can move upward to make the extrusion head stuck in the compression groove, and the compressed biscuit raw material is pressed into the forming groove after being squeezed by the extrusion head, thereby improving the forming efficiency.

[0004] Based on the search of the above patent authorization announcement number and the shortcomings found therein:

[0005] In the existing compressed biscuit forming device, since the bottom of the forming groove for making biscuits is always in a sealed state, after the compressed biscuits are made, there are compressed biscuit crumbs remaining in the forming groove and are difficult to remove. As a result, when making a new round of compressed biscuits, it takes a lot of time to clean the biscuit crumbs from the forming groove, which seriously affects the speed and efficiency of compressed biscuit making. Summary of the invention

[0006] In order to solve the problem that in the existing compressed biscuit forming device, since the bottom of the forming groove for making biscuits is always in a sealed state, after the compressed biscuits are made, there are compressed biscuit crumbs remaining in the forming groove and are difficult to remove, which leads to a large amount of time required to remove the biscuit crumbs from the forming groove when making a new round of compressed biscuits, seriously affecting the speed and efficiency of compressed biscuit production, the present invention provides a forming device for compressed biscuit production.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A forming device for producing compressed biscuits, comprising an upper mold assembly and a lower mold assembly, wherein the upper mold assembly comprises an upper mold shell, and the lower mold assembly comprises a lower mold shell with a hollow interior and a lower mold cylinder, wherein the lower mold shell is connected to an output end of the lower mold cylinder, and the upper mold shell is movably arranged on the top of the lower mold shell;

[0009] The lower mold assembly also includes a plurality of sealing units. The lower mold shell is provided with a plurality of sealing grooves, and the plurality of sealing grooves are matched one-to-one with the plurality of sealing units. The sealing grooves are respectively connected to the interior and the outside of the lower mold shell. The sealing unit includes a connecting rod and a sealing block. The connecting rod is vertically arranged on the ground. The sealing block is connected to the top end of the connecting rod. The sealing block can lock or release its sealing matching relationship with the sealing groove.

[0010] As a preferred technical solution of the present invention, the sealing unit also includes a connecting spring, the sealing block is located at the top of the connecting rod, the connecting spring is arranged between the sealing block and the connecting rod, and the two ends of the connecting spring are respectively connected to the connecting rod and the sealing block.

[0011] As a preferred technical solution of the present invention, the radius of the cross-sectional area of ​​the sealing groove and the sealing matching part of the sealing block decreases from top to bottom, and the radius of the cross-sectional area of ​​the sealing block decreases from top to bottom.

[0012] As a preferred technical solution of the present invention, the upper mold assembly also includes a connecting mold, a plurality of extrusion heads and a telescopic rod, the connecting mold is located at the bottom of the upper mold shell, and the two ends of the telescopic rod are respectively connected to the upper mold shell and the connecting mold; the connecting mold is provided with a plurality of connecting slots, and the plurality of connecting slots and the plurality of sealing grooves are matched one-to-one, and any of the connecting slots can be locked or released to form a matching relationship with the corresponding sealing groove to form a filling space, and a plurality of extrusion heads are arranged in an array at the bottom of the upper mold shell, and the plurality of extrusion heads are matched one-to-one with the plurality of filling spaces, and any of the extrusion heads is located in the corresponding filling space.

[0013] As a preferred technical solution of the present invention, the upper mold assembly also includes an upper mold cylinder, a storage tank filled with biscuit raw materials, a storage pump and a plurality of air pipes. The output end of the upper mold cylinder is connected to the upper mold shell to control the lifting and lowering of the upper mold shell; the storage tank is arranged on the top of the upper mold shell, and the storage pump is arranged on the storage tank. A plurality of air pipes are matched one-to-one with a plurality of extrusion heads, and the two ends of any air pipe are respectively connected to the discharge end of the storage tank and the corresponding extrusion head.

[0014] As a preferred technical solution of the present invention, the telescopic rod includes a main rod with a hollow interior, a sliding rod and a telescopic spring. The main rod is vertically embedded in the upper mold shell, the sliding rod is vertically arranged in the connecting mold, the sliding rod is slidably connected to the main rod coaxially, the telescopic spring is arranged in the main rod, and the two ends of the telescopic spring are respectively connected to the interior of the main rod and the sliding rod.

[0015] As a preferred technical solution of the present invention, it also includes a switch assembly, which includes a sliding plate and a plurality of closing plates. The sliding plate is slidably arranged at the bottom of the upper mold shell, and the plurality of closing plates are connected to the sliding plate at equal intervals along the sliding direction of the sliding plate. The plurality of closing plates and the plurality of extrusion heads are matched one by one, and any of the closing plates can lock or release its sealing matching relationship with the corresponding extrusion head discharge port.

[0016] As a preferred technical solution of the present invention, the switch assembly further comprises a push block, a push rod and a push spring, the upper mold shell is provided with a filling groove and a connecting groove, the axial directions of the filling groove and the connecting groove are parallel to the length direction of the upper mold shell, and the connecting groove is respectively connected with the filling groove and the external environment;

[0017] The push block is slidably and sealedly disposed in the filling groove, the push rod is respectively connected to the push block and the sliding plate by passing through the connecting groove, the push spring is disposed in the filling groove, and the push spring is respectively connected to the push block and the upper mold shell;

[0018] It also includes hydraulic oil. The filling groove is communicated with the interior of the main rod. The interior of the main rod, the filling groove and the pushing block together form a hydraulic space. The hydraulic oil is filled in the hydraulic space.

[0019] As a preferred technical solution of the present invention, the switch assembly also includes a sliding sealing ring, the upper mold shell is also provided with an annular sealing groove, one end of the annular sealing groove overlaps with the connecting groove, the sliding sealing ring is rotatably arranged in the annular sealing groove, the sliding sealing ring is provided with a connecting slot hole, and the connecting slot hole is sealed with the push rod.

[0020] As a preferred technical solution of the present invention, the upper mold assembly also includes a control module, which is arranged in the filling groove, and the control module is communicatively connected with the storage pump, and the control module can lock or release the abutting relationship between it and the pushing block; in the initial state, the distance between the control module and the pushing block is greater than the distance between the closing plate and the corresponding extrusion head outlet.

[0021] The beneficial effects of the present invention are:

[0022] The present invention is provided with a sealing block. When the device completes the production of compressed biscuits, the lower mold cylinder controls the lower mold to move toward the bottom. Since the position of the connecting rod does not change, the position of the sealing block connected thereto does not change either, and relative movement occurs between the lower mold shell and the sealing block. Such a setting enables the sealing block to eject the formed biscuits in the sealing groove. In addition, since the sealing block releases its sealing cooperation relationship with the sealing groove, the biscuit crumbs in the sealing groove will flow out of the sealing groove through the bottom of the sealing groove, ensuring that when new biscuits are made next, there are no biscuit crumbs left on the side walls of the sealing groove. This solves the problem of the existing compressed biscuit forming device that, since the bottom of the forming groove for making biscuits is always in a sealed state, after the compressed biscuits are made, there are compressed biscuit crumbs remaining in the forming groove and are difficult to remove, which results in a large amount of time required to remove the biscuit crumbs from the forming groove when a new round of compressed biscuits is made, seriously affecting the speed and efficiency of compressed biscuit making. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a front cross-sectional view of a forming device for producing compressed biscuits according to the present invention;

[0025] Figure 2 For the present invention Figure 1 A magnified image of point A;

[0026] Figure 3 A diagram of a switch assembly of a forming device for producing compressed biscuits according to the present invention;

[0027] Figure 4 The present invention is a rear view of an upper mold shell of a forming device for producing compressed biscuits.

[0028] Description of main symbols

[0029] In the figure: 1. upper mold shell; 2. lower mold shell; 3. lower mold cylinder; 4. sealing unit; 401. connecting rod; 402. sealing block; 403. connecting spring; 5. connecting mold; 6. extrusion head; 7. telescopic rod; 701. main rod; 702. sliding rod; 703. telescopic spring; 8. upper mold cylinder; 9. storage tank; 10. storage pump; 11. air pipe; 12. switch assembly; 1201. sliding plate; 1202. closing plate; 1203. pushing block; 1204. pushing rod; 1205. pushing spring; 13. hydraulic oil; 14. sliding sealing ring; 15. control module. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1-4 The present embodiment provides a forming device for producing compressed biscuits, comprising an upper mold assembly and a lower mold assembly, wherein the upper mold assembly comprises an upper mold shell 1, and the lower mold assembly comprises an internally hollow lower mold shell 2 and a lower mold cylinder 3, wherein the lower mold shell 2 is connected to the output end of the lower mold cylinder 3, and the upper mold shell 1 can be raised and lowered to be arranged on the top of the lower mold shell 2, and the upper mold shell 1 can lock or release its sealing matching relationship with the lower mold shell 2; the lower mold assembly also comprises a plurality of sealing units 4, and the lower mold shell 2 is provided with a plurality of sealing grooves, and the plurality of sealing grooves are matched with the plurality of sealing units 4 in a one-to-one correspondence; the sealing grooves are respectively connected to the inside and the outside of the lower mold shell 2, and the sealing unit 4 comprises a connecting rod 401 and a sealing block 402, wherein the connecting rod 401 is vertically arranged on the ground, and the sealing block 402 is connected to the top end of the connecting rod 401, and the sealing block 402 can lock or release its sealing matching relationship with the sealing groove; by providing the sealing block 402, when the device completes the production of compressed biscuits, the lower mold cylinder 3 By controlling the lower mold to move toward the bottom, since the position of the connecting rod 401 will not change, the position of the sealing block 402 connected thereto will not change, and relative movement will occur between the lower mold shell 2 and the sealing block 402. Such an arrangement will enable the sealing block 402 to push out the formed biscuits in the sealing groove; in addition, since the sealing block 402 releases its sealing cooperation relationship with the sealing groove, the biscuit crumbs in the sealing groove will flow out of the sealing groove through the bottom of the sealing groove, ensuring that when new biscuits are made next, there are no biscuit crumbs left on the side walls of the sealing groove. This solves the problem of the existing compressed biscuit forming device. Since the bottom of the forming groove for making biscuits is always in a sealed state, after the compressed biscuits are made, there are compressed biscuit crumbs remaining in the forming groove and are difficult to remove, which leads to a large amount of time required to remove the biscuit crumbs from the forming groove when a new round of compressed biscuits is made, seriously affecting the speed and efficiency of compressed biscuit making.

[0032] During the actual operation, when the lower mold cylinder 3 controls the lower mold shell 2 to move toward the top, the gap between the sealing groove and the sealing block 402 will continue to shrink until the sealing groove and the sealing block 402 complete the sealing fit. Then, due to the control accuracy problem of the lower mold cylinder 3, there is a phenomenon that the lower mold cylinder 3 cannot control the lower mold shell 2 to be exactly at the specified height. In order to ensure the sealing fit relationship between the sealing groove and the sealing block 402, the actual situation will control the lower mold shell 2 to move a small distance toward the top on the basis of the original specified height, so as to make up for the problem caused by the insufficient control accuracy of the lower mold cylinder 3. Such a setting requires ensuring that the connection between the sealing block 402 and the connecting rod 401 of this scheme is elastic. Based on this, the sealing unit 4 of this scheme also includes a connecting spring 403, the sealing block 402 is located at the top of the connecting rod 401, and the connecting spring 403 is arranged between the sealing block 402 and the connecting rod 401, and the two ends of the connecting spring 403 are respectively connected to the connecting rod 401 and the sealing block 402. In addition, it is worth explaining that in order to ensure that after the sealing relationship between the sealing block 402 and the sealing groove is released, the crumbs of the compressed biscuits in the sealing groove will slide out from the gap between the sealing block 402 and the sealing groove, the cross-sectional area radius of the sealing matching part between the sealing groove and the sealing block 402 decreases from top to bottom, and the cross-sectional area radius of the sealing block 402 decreases from top to bottom.

[0033] Furthermore, the upper mold assembly of the present scheme also includes a connecting mold 5, a plurality of extrusion heads 6 and a telescopic rod 7. The connecting mold 5 is located at the bottom of the upper mold shell 1, and the two ends of the telescopic rod 7 are respectively connected to the upper mold shell 1 and the connecting mold 5; the connecting mold 5 is provided with a plurality of connecting slots, and the plurality of connecting slots and the plurality of sealing grooves are matched one by one. Any connecting slot can be locked or released to form a matching relationship with the corresponding sealing groove to form a filling space. The plurality of extrusion heads 6 are arranged at the bottom of the upper mold shell 1, and the plurality of extrusion heads 6 are matched one by one with the plurality of filling spaces, and any extrusion head 6 is located in the corresponding filling space; when the lower mold shell 2 reaches the specified position, the sealing block 402 and the sealing groove realize the sealing matching After the upper mold shell 1 and the lower mold shell 2 are in close contact, the upper mold shell 1 moves toward the bottom, and the connecting mold 5 moves with the movement of the upper mold shell 1; first, the connecting mold 5 is fitted with the lower mold shell 2, and the upper mold shell 1 still moves toward the bottom. Since the telescopic rod 7 has a telescopic structural effect, the connecting mold 5 of this scheme stops moving, and the upper mold shell 1 continues to approach the connecting mold 5 until the upper mold shell 1 and the connecting mold 5 are fitted together. After the upper mold shell 1, the connecting mold 5 and the lower mold shell 2 are fitted together, a sealed filling space will be formed, and the extrusion head 6 located in the filling space will spray the raw materials for making biscuits into the filling space, and compressed biscuits will be made through subsequent process steps.

[0034] Specifically, the upper mold assembly also includes an upper mold cylinder 8, a storage tank 9 filled with biscuit raw materials, a storage pump 10 and a plurality of air pipes 11. The output end of the upper mold cylinder 8 is connected to the upper mold shell 1 to control the lifting and lowering of the upper mold shell 1; the storage tank 9 is arranged on the top of the upper mold shell 1, the storage pump 10 is arranged on the storage tank 9, and the plurality of air pipes 11 are matched with the plurality of extrusion heads 6 in a one-to-one correspondence. The two ends of any air pipe 11 are respectively connected to the discharge end of the storage tank 9 and the corresponding extrusion head 6. The upper mold cylinder 8 is provided to control the lifting and lowering of the upper mold shell 1, and the storage pump 10 is provided to transfer the biscuit raw materials in the storage tank 9 to the extrusion head 6, and then discharged through the extrusion head 6.

[0035] Specifically, the structure of the telescopic rod 7 of the present scheme includes an internally hollow main rod 701, a sliding rod 702 and a telescopic spring 703. The main rod 701 is vertically embedded in the upper mold shell 1, and the sliding rod 702 is vertically arranged in the connecting mold 5. The sliding rod 702 can be slidably connected to the main rod 701 coaxially. The telescopic spring 703 is arranged in the main rod 701, and the two ends of the telescopic spring 703 are respectively connected to the inside of the main rod 701 and the sliding rod 702.

[0036] In addition, the present scheme also includes a switch assembly 12, which includes a sliding plate 1201 and a plurality of closing plates 1202. The sliding plate 1201 can be slidably arranged at the bottom of the upper mold shell 1, and the plurality of closing plates 1202 are connected to the sliding plate 1201 at equal intervals along the sliding direction of the sliding plate 1201. The plurality of closing plates 1202 and the plurality of extrusion heads 6 are matched one by one, and any closing plate 1202 can lock or release its sealing matching relationship with the corresponding extrusion head 6 discharge port; when the closing plate 1202 and the corresponding extrusion head 6 discharge port achieve a sealing matching relationship, the biscuit material in the extrusion head 6 cannot flow out of the extrusion head 6; when the closing plate 1202 and the corresponding extrusion head 6 discharge port are released from the sealing matching relationship, the biscuit material in the extrusion head 6 can flow out of the extrusion head 6.

[0037] Furthermore, it is necessary to describe the driving principle of the sliding plate 1201 of the present invention. The switch assembly 12 of the present invention also includes a pushing block 1203, a pushing rod 1204 and a pushing spring 1205. The upper mold shell 1 is provided with a filling groove and a connecting groove. The axial direction of the filling groove and the axial direction of the connecting groove are parallel to the length direction of the upper mold shell 1. The connecting groove is connected to the filling groove and the external environment respectively; the pushing block 1203 is slidably sealed in the filling groove, the pushing rod 1204 is connected to the pushing block 1203 and the sliding plate 1201 respectively by passing through the connecting groove, the pushing spring 1205 is arranged in the filling groove, and the pushing spring 1205 is connected to the pushing block 1203 and the upper mold shell 1 respectively; it also includes hydraulic oil 13, the filling groove is relative to the inside of the main rod 701 The interior of the main rod 701, the filling groove and the pushing block 1203 are interconnected to form a hydraulic space, and the hydraulic oil 13 is filled in the hydraulic space; it is worth noting that when the connecting mold 5 of the present scheme is fitted with the lower mold shell 2, and the upper mold shell 1 has not yet fitted with the connecting mold 5, as the upper mold shell 1 continues to approach the direction of the connecting mold 5, the sliding rod 702 gradually moves toward the inside of the main rod 701, thereby causing the internal space of the main rod 701 to decrease. Since the hydraulic oil 13 has the characteristic of being incompressible, in fact, the overall volume of the hydraulic space will not change. Therefore, the hydraulic oil 13 will drive the pushing block 1203 to slide toward the end of the filling groove away from the main rod 701, thereby driving the sliding plate 1201 to slide.

[0038] In addition, in order to ensure that the hydraulic oil 13 located in the filling groove does not overflow into the external environment during the movement of the pushing block 1203, the switch assembly 12 of the present scheme also includes a sliding sealing ring 14, and the upper mold shell 1 is also provided with an annular sealing groove, one end of the annular sealing groove coincides with the connecting groove, and the sliding sealing ring 14 is rotatably arranged in the annular sealing groove, and the sliding sealing ring 14 is provided with a connecting groove hole, and the connecting groove hole is sealed with the pushing rod 1204. By providing the sliding sealing ring 14, since the sliding sealing ring 14 is always sealed in the annular sealing groove, and the connecting groove coincides with one end of the annular sealing groove, the sliding sealing ring 14 also seals the connecting groove. Moreover, since the sliding sealing ring 14 is sealed with the pushing rod 1204 by providing a connecting groove hole, it is ensured that the hydraulic oil 13 located in the filling groove will not overflow from the connection between the sliding sealing ring 14 and the pushing rod 1204.

[0039] Furthermore, the present solution also needs to control the opening and closing of the storage pump 10. Based on this, the upper mold assembly of the present solution also includes a control module 15, which is arranged in the filling tank. The control module 15 is in communication with the storage pump 10. The control module 15 can lock or release its abutment with the push block 1203. When the push block 1203 and the control module 15 are abutted, the control module 15 will control the storage pump 10 to work; on the contrary, when the push block 1203 releases its abutment with the control module 15, the control module 15 will control the storage pump 10 to stop working. It is also worth noting that in order to ensure that the closing plate 1202 of the present solution releases its sealing cooperation relationship with the corresponding extrusion head 6 outlet, and then drives the storage pump 10 to work, in the initial state where the upper mold shell 1 and the lower mold shell 2 have not yet been attached to each other, the distance between the control module 15 and the push block 1203 is greater than the distance between the closing plate 1202 and the corresponding extrusion head 6 outlet.

[0040] It is worth noting that when the upper mold shell 1 and the lower mold shell 2 are restored to their original positions by their respective upper mold cylinders 8 and lower mold cylinders 3 , all components are restored to their original positions.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A forming device for compressed biscuit production, characterized in that: The mold assembly comprises an upper mold assembly and a lower mold assembly, wherein the upper mold assembly comprises an upper mold shell, and the lower mold assembly comprises an internally hollow lower mold shell and a lower mold cylinder, wherein the lower mold shell is connected to an output end of the lower mold cylinder, and the upper mold shell is lifted and lowered on the top of the lower mold shell; The lower mold assembly further includes a plurality of sealing units, the lower mold shell is provided with a plurality of sealing grooves, and the plurality of sealing grooves are matched with the plurality of sealing units in a one-to-one manner; the sealing grooves are respectively connected to the interior and the exterior of the lower mold shell, and the sealing unit includes a connecting rod and a sealing block, the connecting rod is vertically arranged on the ground, the sealing block is connected to the top end of the connecting rod, and the sealing block can lock or release its sealing matching relationship with the sealing groove; The upper mold assembly further comprises a connecting mold, a plurality of extrusion heads and a telescopic rod, wherein the connecting mold is located at the bottom of the upper mold shell, and the two ends of the telescopic rod are respectively connected to the upper mold shell and the connecting mold; the connecting mold is provided with a plurality of connecting slots, and the plurality of connecting slots and the plurality of sealing slots are matched one by one, and any of the connecting slots can be locked or released to form a matching relationship with the corresponding sealing slot to form a filling space, and a plurality of extrusion heads are arranged in an array at the bottom of the upper mold shell, and the plurality of extrusion heads are matched one by one with the plurality of filling spaces, and any of the extrusion heads is located in a corresponding filling space; The upper mold assembly also includes an upper mold cylinder, a storage tank filled with biscuit raw materials, a storage pump and a plurality of air pipes. The output end of the upper mold cylinder is connected to the upper mold shell to control the lifting of the upper mold shell; the storage tank is arranged on the top of the upper mold shell, the storage pump is arranged on the storage tank, and the plurality of air pipes are matched with the plurality of extrusion heads in a one-to-one correspondence. The two ends of any of the air pipes are respectively connected to the discharge end of the storage tank and the corresponding extrusion head; The telescopic rod comprises a main rod with a hollow interior, a sliding rod and a telescopic spring, wherein the main rod is vertically embedded in the upper mold shell, the sliding rod is vertically arranged in the connecting mold, the sliding rod is slidably connected to the main rod coaxially, the telescopic spring is arranged in the main rod, and the two ends of the telescopic spring are respectively connected to the interior of the main rod and the sliding rod; The sealing unit further comprises a connecting spring, the sealing block is located at the top of the connecting rod, the connecting spring is arranged between the sealing block and the connecting rod, and two ends of the connecting spring are respectively connected to the connecting rod and the sealing block; The radius of the cross-sectional area of ​​the sealing matching part of the sealing groove and the sealing block decreases from top to bottom, and the radius of the cross-sectional area of ​​the sealing block decreases from top to bottom.

2. A forming device for compressed biscuit production according to claim 1, characterized in that: It also includes a switch assembly, the switch assembly includes a sliding plate and a plurality of closing plates, the sliding plate is slidably disposed at the bottom of the upper mold shell, the plurality of closing plates are connected to the sliding plate at equal intervals along the sliding direction of the sliding plate, the plurality of closing plates are matched with the plurality of extrusion heads in a one-to-one correspondence, and any of the closing plates can lock or release its sealing matching relationship with the corresponding extrusion head discharge port; The switch assembly further comprises a push block, a push rod and a push spring, the upper mold shell is provided with a filling groove and a connecting groove, the axial directions of the filling groove and the connecting groove are parallel to the length direction of the upper mold shell, and the connecting groove is respectively connected with the filling groove and the external environment; The push block is slidably and sealedly disposed in the filling groove, the push rod is respectively connected to the push block and the sliding plate by passing through the connecting groove, the push spring is disposed in the filling groove, and the push spring is respectively connected to the push block and the upper mold shell; It also includes hydraulic oil, the filling groove is in communication with the interior of the main rod, the interior of the main rod, the filling groove and the pushing block together form a hydraulic space, and the hydraulic oil is filled in the hydraulic space; The upper mold assembly also includes a control module, which is arranged in the filling tank. The control module is communicatively connected with the storage pump, and the control module can lock or release the abutting relationship between it and the pushing block; in the initial state, the distance between the control module and the pushing block is greater than the distance between the closing plate and the corresponding extrusion head outlet.

3. A forming device for compressed biscuit production according to claim 2, characterized in that: The switch assembly also includes a sliding sealing ring, and the upper mold shell is also provided with an annular sealing groove, one end of the annular sealing groove overlaps with the connecting groove, the sliding sealing ring is rotatably arranged in the annular sealing groove, and the sliding sealing ring is provided with a connecting slot hole, and the connecting slot hole is sealed with the push rod.

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