A pressure platform of a sample pressing machine and a sample pressing machine

Abstract

The present invention discloses a pressure platform of a press machine and a press machine, the press machine comprises a pressure platform for accommodating materials, and an adjusting bolt for abutting and fixing a mold cover on the pressure platform; the pressure platform comprises: a base, and a mold pressing head and a mold jacket arranged on the base, the mold jacket is sleeved on the mold pressing head to form a receiving groove for accommodating materials; by sliding the mold jacket on the base, the mold jacket is driven to move toward or away from the adjusting bolt, so that automatic demoulding can be achieved. This avoids the problem that the operator of the press machine in the prior art needs to manually pull the adjusting bolt with the help of an auxiliary rod to achieve demoulding, resulting in low work efficiency and great difficulty in operation.

Description

Technical Field

[0001] The invention relates to the technical field of powder pressing, and in particular to a pressure platform of a pressing machine and a pressing machine. Background Art

[0002] With the development of science and technology, in the fields of metallurgy, drug testing, non-ferrous metals, commodity inspection, cement, building materials, coal, mining, etc., more and more people use X-ray fluorescence spectrometers (XRF) and energy spectrometers to detect the composition of materials. Crushing the material into uniform ultra-fine powder and pressing it into sheets with a sample press has also become an indispensable task before testing.

[0003] However, the existing press machines still use semi-automatic demoulding mechanisms. Figure 4 As shown, the existing press machine includes: a pressure platform 101, a pressure cover 102, and an adjustment bolt 103 for fixing the pressure cover 102; the pressure platform 101 includes a receiving groove composed of a mold jacket and a mold pressure head for accommodating ultrafine powder, and the pressure cover 102 is fastened to the opening position of the receiving groove under the pressing force of the adjustment bolt 103 to form a closed cavity for accommodating the ultrafine powder to be pressed. During the use of the press machine, the ultrafine powder is pushed by the mold pressure head to press it into a sheet structure. After the pressing process is completed, the operator needs to manually pull the adjustment bolt 103 with the help of an auxiliary rod, so that the adjustment bolt 103 leaves the pressure cover 102, and then the operator can push the swing arm 104, and then press the up button, and the pressure cover 102 and the pressed sample are removed from the mold jacket. After each pressing process of the press machine in the above-mentioned prior art is completed, the operator needs to manually pull the adjustment bolt 103 with the help of an auxiliary rod, which is very complicated and seriously affects the work efficiency. In addition, due to the high driving pressure of the mold pressure head, the pressure cover 102 and the adjustment bolt 103 will fit closely together, and a negative pressure space will be generated between them. A very large driving force is required to separate the adjustment bolt 103 from the pressure cover 102, resulting in the problem that it is difficult to twist the adjustment bolt 103 by manual operation, and then the swing arm 104 can be pushed to move the adjustment bolt 103 to a position that does not block the pressure cover 102. The demoulding difficulty of the above-mentioned press machine is high, which further increases the difficulty of operating the press machine and reduces the work efficiency. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is that the existing press machine requires manual assistance for demoulding, resulting in low work efficiency and great difficulty in operation. The present invention provides a pressure platform for a press machine, the press machine includes a pressure platform for accommodating materials, and a limiting component for abutting and fixing the mold cover on the pressure platform; the pressure platform includes: a base, and a mold pressing head and a mold jacket arranged on the base, the mold jacket is sleeved on the mold pressing head to form a accommodating groove for accommodating materials;

[0005] The mold sleeve is slidably disposed on the base and is driven to move toward or away from the limiting component, and has the following functions: driving the mold cover to a clamping position where the mold cover is tightly fitted with the limiting component; and driving the mold cover to a loosening position away from the limiting component.

[0006] The pressure platform also includes:

[0007] A biasing member is arranged on the base; during the pressing process of the pressing machine, the biasing member applies a biasing force to the mold jacket to move it toward the limiting member, thereby driving the mold jacket to move to the pressing position. The pressing process is as follows: the mold pressing head moves toward the direction close to the pressure member, thereby cooperating with the mold pressing cover to squeeze the powder in the above-mentioned accommodating groove to complete the powder tableting action.

[0008] The mold jacket is arranged in the vertical direction; during the demolding process of the sample pressing machine, the mold jacket moves to the release position under the combined action of the pushing action of the mold pressing head and the gravity of the mold jacket itself. The above demolding process is: the mold pressing head moves in a direction away from the pressure component, so that the mold pressing head leaves the pressed sample.

[0009] The biasing member is an elastic element connected to the mold sleeve and the mold pressing head respectively.

[0010] The mold pressing head is a columnar structure, and the elastic element is a compression spring sleeved on the mold pressing head.

[0011] An annular limiting boss is arranged in the circumferential direction of the mold pressing head, one end of the elastic element is abutted and connected with the annular limiting boss, and the other end of the elastic element is abutted and connected with the end surface of the mold sleeve away from the mold pressing cover.

[0012] The pressure platform used for the sample pressing machine also includes: a driving sleeve which is sleeved on the mold pressing head and is used to drive the mold pressing head to move; an annular positioning sleeve which is respectively tightly fitted with the driving sleeve and the elastic element is arranged between the driving sleeve and the elastic element.

[0013] The inner cavity of the driving sleeve has an annular groove extending in a direction away from the mold pressing head, and the annular positioning sleeve is accommodated in the annular groove.

[0014] The outer peripheral wall of the annular positioning sleeve and the annular groove are provided with threads that match each other.

[0015] A pressure table for a press machine, including:

[0016] The limiting structure is used to prevent the mold jacket from being separated from the base, so that the mold jacket can be switched between the clamping position and the releasing position.

[0017] The moving distance of the mold jacket between the clamping position and the releasing position is 1 mm to 3 mm.

[0018] The limiting structure comprises:

[0019] A boss is arranged on one of the outer peripheral wall of the mold jacket and the base;

[0020] The slide groove is adapted to the boss, and the slide groove is arranged on the outer peripheral wall of the mold sleeve and the other of the base, and is arranged along the length direction of the mold sleeve.

[0021] The pressure platform for the sample pressing machine also includes: a nesting adapted to the shape of the mold jacket, the nesting is detachably fixedly mounted on the base, and the mold jacket is driven to slide in the inner cavity of the nesting;

[0022] The limiting structure comprises:

[0023] A boss is provided on one of the mold jacket and the nest;

[0024] A slide groove is adapted to the boss, and the slide groove is arranged on the other of the mold outer shell and the nesting, and is arranged along the length direction of the mold outer shell.

[0025] The boss is an annular protrusion arranged along the circumferential direction of the mold sleeve, and the slide groove is an annular groove matched with the boss.

[0026] A pressing machine, comprising:

[0027] A limiting component for abutting and fixing the mold cover on the pressure platform; and

[0028] The pressure platform of the press.

[0029] The technical solution of the present invention has the following advantages:

[0030] 1. The pressure platform for a press machine provided by the present invention comprises: a mold jacket, the mold jacket is sleeved on the mold pressure head to form a receiving groove for receiving materials, and the opening position of the receiving groove is provided with a mold pressure cover for sealing the receiving groove, and the mold pressure cover is connected to the mold jacket under the drive of the limiting component; the mold jacket is driven to move toward or away from the mold pressure head, and has: a pressing position in which the mold pressure cover is closely fitted with the limiting component; and a loosening position in which the mold pressure cover is driven away from the limiting component. The present invention designs the mold jacket as a sliding component that can move toward or away from the limiting component on the base, so that the mold jacket has a pressing position in which the mold pressure cover is closely fitted with the limiting component; and a loosening position in which the mold pressure cover is driven away from the limiting component. Before the press machine presses the ultrafine powder, the mold jacket is located in a loosening position away from the mold pressure head, and there is a gap between the limiting component and the mold pressure cover. During the process of tableting the ultrafine powder by the press, the mold jacket is driven to move from a loose position away from the mold pressure head to a clamping position close to the mold pressure head. At this time, the limiting component and the mold cover are tightly connected, so that the limiting component can effectively limit and fix the mold cover to ensure that the mold cover will not be out of position during the tableting process when the mold pressure head moves toward the mold cover. The mold head can effectively tablet the ultrafine powder in the closed cavity composed of the accommodating groove and the mold cover. After the tableting of the press is completed, the limiting component moves in a direction away from the mold cover, and the mold jacket is driven to move from the clamping position to the loose position. At this time, there is a gap between the limiting component and the mold cover. The operator does not need to manually operate to separate the limiting component from the mold cover, and can rotate the swing arm to translate the limiting component to a position away from the mold cover, so as to realize automatic demolding of the press. It effectively solves the problem in the prior art that manual operation is required to separate the limiting component from the mold cover, the operation of the press is very complicated, and the work efficiency is seriously affected. Furthermore, the problem that a negative pressure space is generated between the mold pressure cover and the adjusting bolt during the pressing process due to the high driving pressure of the mold pressure head and the two are tightly fitted and connected, and it is difficult to turn the adjusting bolt manually is avoided.

[0031] 2. The pressure platform for the press provided by the present invention also includes: a biasing member, which is connected to the mold jacket; during the pressing process of the press, the biasing member applies a biasing force to the mold jacket to move it toward the direction of the mold pressing head, driving the mold jacket to move to the clamping position. The biasing member is a compression spring connected to the mold jacket to push the mold jacket toward the clamping position; or, the biasing member is a magnetic component connected to a power source, which generates a magnetic field when powered on to drive the mold jacket to move toward the clamping position. During the process of the press pressing machine tabletting ultrafine powder, the biasing member can push the mold jacket to move to a clamping position close to the mold pressing head, ensuring that the limiting member and the mold cover are tightly fitted and connected, and the mold cover will not fall out of position.

[0032] 3. The pressure platform for the press provided by the present invention, the mold jacket is arranged in the vertical direction; during the demolding process of the press, the mold jacket moves to the release position under the pushing action of the mold pressure head and the combined action of the weight of the mold jacket itself. The mold pressure head moves in the direction away from the limiting component, so that the mold pressure head leaves the pressed sample. During the demolding process, since the biasing member no longer applies pressure to the mold jacket to make the limiting component and the mold cover fit tightly, the mold jacket will slide in the direction away from the limiting component under the action of its own weight and the pressure of the mold pressure head. The mold cover and the limiting component are in a separated state. There is no need to adjust the position of the limiting component to push the swing arm to translate the limiting component to a position away from the mold cover, so that the press can automatically demold, reduce the labor intensity of the operator, improve the operating efficiency, and effectively improve the user experience.

[0033] 4. The pressure platform for the press machine provided by the present invention, the biasing member is an elastic element connected to the mold jacket and the mold pressing head respectively. The biasing member is an elastic element connecting the mold jacket and the mold pressing head, so that when the mold pressing head moves toward the limiting component, the elastic element will be deformed and squeezed by the mold pressing head, thereby pushing the mold jacket to move toward the limiting component, so that the limiting component and the mold pressing cover are tightly fitted, ensuring that the mold pressing cover will not be out of position during the tableting process when the mold pressing head moves toward the mold pressing cover. The elastic element has a simple structure and low cost of use and replacement, and can also effectively ensure the reliability of the press machine.

[0034] 5. The pressure platform for the press machine provided by the present invention, the mold pressure head is a columnar structure, and the elastic element is an annular sleeve sleeved on the mold pressure head. By sleeved the elastic element on the columnar mold pressure head, the internal space layout of the press machine can be effectively optimized, making the equipment miniaturized. In addition, the elastic element sleeved on the mold pressure head will be connected to the central position of the mold jacket, so that the mold jacket is more evenly stressed, preventing the mold jacket from being offset and affecting the normal use of the press machine.

[0035] 6. The pressure platform for the prototype press provided by the present invention has an annular limiting boss arranged in the circumferential direction of the mold pressing head, and the two ends of the elastic element are respectively connected to the annular limiting boss and the end face of the mold jacket away from the mold cover. By arranging the annular limiting boss in the circumferential direction of the mold pressing head, the two ends of the elastic element can be respectively connected to the annular limiting boss and the mold jacket, thereby ensuring that the biasing member can effectively push the mold jacket toward the limiting component, so that the limiting component and the mold cover fit tightly. In addition, the operator only needs to put the above-mentioned compression spring on the mold pressing head, which can also effectively reduce the difficulty of installation and maintenance of the compression spring as an elastic element.

[0036] 7. The pressure platform for the sample pressing machine provided by the present invention also includes a driving sleeve sleeved on the mold pressing head and used to drive the mold pressing head to move; an annular positioning sleeve is arranged between the driving sleeve and the elastic element and is tightly fitted with the two. The outer ring of the annular positioning sleeve is tightly fitted and connected to the inner cavity wall of the driving sleeve, and the inner ring of the annular positioning sleeve is tightly fitted and connected to the compression spring, so that the compression spring can be effectively positioned to prevent the position deviation of the compression spring from affecting the compression spring pushing the mold outer sleeve to move.

[0037] 8. The pressure platform for the prototype press provided by the present invention has an inner cavity of the driving sleeve having an annular groove extending in a direction away from the mold pressing head, and the annular positioning sleeve is accommodated in the annular groove. The annular positioning sleeve installed in the annular groove of the driving sleeve, the outer ring of the annular positioning sleeve is connected to the annular groove, and the inner ring of the annular positioning sleeve is connected to the compression spring to fix the compression spring, thereby effectively positioning the compression spring. In addition, by providing an annular groove on the inner cavity wall of the driving sleeve, the annular positioning sleeve can be provided at the connection position between the driving sleeve and the mold pressing head, and the mold pressing head can be effectively limited and fixed by the annular positioning sleeve, and the mold pressing head can be firmly fixed on the driving sleeve, which has the advantages of simple installation and maintenance and firmness and reliability.

[0038] 9. The pressure platform for the sample pressing machine provided by the present invention further includes: a limiting structure for preventing the mold jacket from being separated from the fixing frame, so that the mold jacket switches between the pressing position and the releasing position. The limiting structure can effectively limit the distance that the mold jacket moves toward or away from the limiting component, thereby preventing the mold jacket from moving too far and ensuring that the mold jacket can move within the limited distance.

[0039] 10. The pressure platform for the prototype pressing machine provided by the present invention, the limiting structure includes a boss and a slide groove which are respectively arranged on the outer peripheral wall of the mold jacket and the fixed frame and are adapted to each other, and the slide groove is arranged along the length direction of the mold jacket. The mold jacket provided with the boss can be effectively limited by the slide groove arranged along the length direction of the mold jacket. When the mold jacket moves toward the limiting component, it will be connected to the upper end of the slide groove, and when the mold jacket moves away from the limiting component, it will be connected to the lower end of the slide groove. The gap between the boss and the end of the slide groove is greater than or equal to the gap length between the limiting component and the mold cover. The above structure can stably and reliably limit the moving distance of the mold jacket.

[0040] 11. The pressure platform for the press provided by the present invention also includes: a nesting that matches the shape of the mold jacket, the nesting is detachably fixedly mounted on the base, and the mold jacket is driven to slide in the inner cavity of the nesting; one of the boss and the slide groove is arranged on the outer peripheral wall of the mold jacket, and the other of the boss and the slide groove is arranged on the inner cavity wall of the nesting. The nesting that is detachably fixedly mounted on the base can simply and conveniently realize the transformation and upgrading of the existing press, effectively saving costs and improving the user experience. In addition, the above-mentioned nesting also facilitates manufacturers and users to replace and maintain equipment, thereby improving the user experience.

[0041] 12. The pressure platform for the press machine provided by the present invention, the boss is an annular protrusion arranged along the circumferential direction of the mold jacket, and the slide groove is an annular groove matched with the boss. The mutually matched annular protrusion and annular groove can effectively increase the connection surface of the limiting structure between the mold jacket and the nesting, avoiding stress concentration. In addition, the annular protrusion is arranged along the circumferential direction of the mold jacket, which can also effectively ensure that all parts of the mold jacket are evenly stressed, and the mold jacket will not be tilted.

[0042] 13. The press machine provided by the present invention comprises: a limiting component for abutting and fixing the mold cover on the pressure platform; and a pressure platform of the press machine. Since the press machine adopts the above pressure platform, any advantage described above for the pressure platform is specifically realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the initial state structure of the prototype pressing machine provided by the present invention;

[0045] Figure 2 The schematic diagram of the operation of the sample pressing machine provided by the present invention during the sample pressing process;

[0046] Figure 3 The schematic diagram of the demoulding process of the prototype pressing machine provided by the present invention;

[0047] Figure 4 It is the front view of the pressing machine in the prior art.

[0048] Description of reference numerals:

[0049] 1-mold jacket; 2-mold pressure head; 3-mold pressure cover; 4-limiting component; 5-biasing member; 6-annular limiting boss; 7-driving sleeve; 8-annular positioning sleeve; 9-nesting; 10-pressure platform; 11-boss; 12-slide; 101-pressure platform; 102-pressure cover; 103-adjusting bolt; 104-swing arm. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0054] Example 1

[0055] The present embodiment provides a pressing machine, which includes a pressure platform for accommodating materials, and a limiting component 4 for abutting and fixing the mold cover 3 on the pressure platform. The limiting component 4 is an adjusting bolt, which abuts against the upper surface of the mold cover 3 to press and fix the mold cover 3 on the mold sleeve 1.

[0056] like Figures 1 to 3 The schematic diagram of the working process of the press is shown in the figure. The pressure platform includes:

[0057] Base 10;

[0058] The die pressing head 2 is arranged on the base 10, and the die pressing head 2 is a columnar structure that moves up and down under the drive of the oil cylinder;

[0059] The mold jacket 1 is arranged on the base 10, and the mold jacket 1 is sleeved on the mold pressing head 2 to form a receiving groove for receiving ultrafine powder; the mold jacket 1 is slidably arranged on the base 10, and is driven to move toward or away from the limiting component 4, and has: a pressing position in which the mold pressing cover 3 is tightly fitted with the limiting component 4; and a loosening position in which the mold pressing cover 3 is moved away from the limiting component 4; by designing the mold jacket 1 as a sliding component that can move toward or away from the limiting component 4 on the base 10, the mold jacket 1 has a pressing position in which the mold pressing cover 3 is tightly fitted with the limiting component 4; and a loosening position in which the mold pressing cover 3 is moved away from the limiting component 4. Before the ultrafine powder is tableted by the pressing machine, the mold jacket 1 is located in a loosening position away from the mold pressing head 2, and at this time there is a gap between the limiting component 4 and the mold pressing cover 3. During the process of tableting the ultrafine powder by the press, the mold jacket 1 is driven to move from a loose position away from the mold pressure head 2 to a clamping position close to the mold pressure head 2. At this time, the limiting component 4 and the mold cover 3 are tightly connected, so that the limiting component 4 can effectively limit and fix the mold cover 3 to ensure that the mold cover 3 will not be out of position during the tableting process when the mold pressure head 2 moves toward the mold cover 3. The mold pressure head 2 can effectively tablet the ultrafine powder in the closed cavity composed of the accommodating groove and the mold cover 3. After the tableting of the press is completed, the limiting component 4 moves in a direction away from the mold cover 3, and the mold jacket 1 is driven to move from the clamping position to the loose position. At this time, there is a gap between the limiting component 4 and the mold cover 3. The operator does not need to manually separate the limiting component 4 from the mold cover 3, and can rotate the swing arm to translate the limiting component 4 to a position away from the mold cover 3, so as to realize automatic demolding of the press. The invention effectively solves the problem in the prior art that the limiting component 4 needs to be manually operated to separate the mold pressing cover 3, and the operation of the pressing machine is very complicated, which seriously affects the work efficiency. In addition, the invention avoids the problem that the negative pressure space is generated between the mold pressing cover 3 and the adjusting bolt during the pressing process due to the high driving pressure of the mold pressing head 2, and the two are tightly connected, and it is difficult to turn the adjusting bolt by manual operation;

[0060] The biasing member 5 is a compression spring mounted on the mold ram 2, and the upper and lower ends of the compression spring are respectively connected to the mold jacket 1 and the mold ram 2. During the pressing process of the press, the compression spring applies a biasing force to the mold jacket 1 to move it toward the limiting component 4, driving the mold jacket 1 to move to the clamping position. In addition, the mold jacket 1 is arranged in the vertical direction; during the demolding process of the press, the mold jacket 1 moves to the released position under the combined action of its own gravity and the downward movement of the mold ram 2. During the process of the press to tablet the ultrafine powder, the compression spring can push the mold jacket 1 to move to the clamping position close to the mold ram 2, ensuring that the limiting component 4 and the mold cover 3 are tightly fitted and connected, and the mold cover 3 will not be out of position. During the process of the mold pressing head 2 moving in the direction away from the limiting component 4, during the above demoulding process, since the compression spring no longer applies pressure to the mold jacket 1 to make the limiting component 4 and the mold cover 3 fit tightly, the mold jacket 1 will slide in the direction away from the limiting component 4 under the action of the downward movement of the mold pressing head 2 and its own gravity, and the mold pressing head 2 leaves the pressed sample. The above-mentioned mold cover 3 and the limiting component 4 are in a separated state. There is no need to adjust the position of the limiting component 4 to push the swing arm to translate the limiting component 4 to a position away from the mold cover 3 to realize automatic demoulding of the sample pressing machine, thereby reducing the labor intensity of the operator, improving the operating efficiency, and effectively improving the user experience;

[0061] The driving sleeve 7 is sleeved on the mold ram 2 and is used to drive the mold ram 2 to move. The inner cavity of the driving sleeve 7 has an annular groove extending in a direction away from the mold ram 2. An annular positioning sleeve 8 is provided between the driving sleeve 7 and the elastic element, which is tightly fitted with the two respectively. The annular positioning sleeve 8 is accommodated in the annular groove, and the outer peripheral wall of the annular positioning sleeve 8 and the inner cavity wall of the annular groove are provided with mutually matching threads. The outer ring of the annular positioning sleeve 8 is connected to the annular groove, and the inner ring of the annular positioning sleeve 8 is fitted and connected with the compression spring to fix the compression spring, thereby effectively positioning the compression spring. In addition, by providing an annular groove on the inner cavity wall of the driving sleeve 7, the annular positioning sleeve 8 can be provided at the connection position between the driving sleeve 7 and the mold ram 2, and the mold ram 2 can also be effectively limited and fixed by the annular positioning sleeve 8, so that the mold ram 2 is firmly fixed on the driving sleeve 7, which has the advantages of simple installation and maintenance and firmness and reliability;

[0062] The nest 9 is adapted to the shape of the mold jacket 1, the nest 9 is detachably fixedly mounted on the base 10, and the mold jacket 1 is driven to slide in the inner cavity of the nest 9;

[0063] The limiting structure is used to prevent the mold jacket 1 from being separated from the base 10, so that the mold jacket 1 can be switched between the clamping position and the releasing position. The limiting structure includes: a boss 11, which is arranged on the mold jacket 1; a slide 12, which is mutually adapted with the boss 11, and the slide 12 is arranged on the nest 9, and the slide 12 is arranged along the length direction of the mold jacket 1. The length of the slide 12 is 2mm longer than the length of the boss 11, so that before the pressing machine is pressed and after the mold is removed, there is a gap of 1mm to 2mm between the adjustment bolt and the mold cover 3, so that the moving distance of the mold jacket 1 between the clamping position and the releasing position is 1mm to 2mm, so as to ensure that the user can directly push the swing arm to move the adjustment bolt to a position away from the mold cover 3. In addition, the boss 11 is an annular protrusion arranged along the circumferential direction of the mold jacket 1, and the slide 12 is an annular groove adapted with the boss 11. The above-mentioned mutually adapted annular protrusions and annular grooves can effectively increase the connection surface of the limiting structure between the mold jacket 1 and the nesting 9 to avoid stress concentration. In addition, the above-mentioned annular protrusions are arranged along the circumferential direction of the mold jacket 1, which can also effectively ensure that all parts of the mold jacket 1 are evenly stressed and the mold jacket 1 will not tilt.

[0064] In this embodiment, an annular limiting boss 6 is provided in the circumferential direction of the mold pressing head 2, one end of the elastic element is abutted and connected with the annular limiting boss 6, and the other end of the elastic element is abutted and connected with the end surface of the mold jacket 1 away from the mold cover 3. By providing the annular limiting boss 6 in the circumferential direction of the mold pressing head 2, the two ends of the elastic element can be abutted and connected with the annular limiting boss 6 and the mold jacket 1 respectively, thereby ensuring that the biasing member 5 can effectively push the mold jacket 1 to move toward the limiting component 4, so that the limiting component 4 and the mold cover 3 are closely fitted. In addition, the operator only needs to put the above-mentioned compression spring on the mold pressing head 2, which can also effectively reduce the difficulty of installation and maintenance of the compression spring as an elastic element.

[0065] Of course, the present invention does not impose any specific restrictions on the structure of the biasing member 5. In other embodiments, the biasing member 5 is mounted on the base 10 and is disposed toward the mold jacket 1. The biasing member 5 is a magnetic component connected to a power source. When powered on, the magnetic component generates a magnetic field to drive the mold jacket 1 to move toward the pressing position, thereby driving the mold jacket 1 to move toward the adjustment pin during the pressing process of the pressing machine.

[0066] Of course, the present invention does not impose any specific limitation on the length difference between the slide groove 12 and the boss 11. In other embodiments, the length of the slide groove 12 is more than 2 mm longer than the length of the boss 11, so that before the pressing machine presses the tablet and after the mold is removed, there is a gap of more than 2 mm between the adjustment bolt and the mold cover 3 to ensure that the user can smoothly push the swing arm to move the adjustment bolt to a position away from the mold cover 3.

[0067] Of course, the present invention does not impose any specific restrictions on the location of the limiting structure. In other embodiments, the pressure platform is not provided with a nest 9. The above-mentioned limiting structure includes: a boss 11, which is arranged on the outer peripheral wall of the mold jacket 1; a slide groove 12, which is mutually adapted with the boss 11, and the slide groove 12 is arranged on the inner wall of the accommodating cavity of the base 10 for accommodating the mold pressure head 2, and the slide groove 12 is arranged along the length direction of the mold jacket 1.

[0068] The operation steps of the sample pressing machine provided by the present invention are as follows:

[0069] S1, put the ultrafine powder into the accommodating groove for accommodating the material formed by the mold pressure head 2 and the mold jacket 1, and place the mold pressure cover 3 at the opening position of the mold jacket 1 to form a closed cavity for accommodating the material, and push the swing arm to slide in the horizontal direction so that the limiting component 4 is arranged opposite to the mold pressure cover 3;

[0070] S2, adjusting the position of the limiting component 4, the limiting component 4 is an adjusting bolt, controlling the adjusting bolt to move toward the mold cover 3, so that there is a gap of 1mm to 2mm between the adjusting bolt and the mold cover 3; at this time, the mold jacket 1 is located in a loose position away from the limiting component 4, so that there is a gap between the adjusting bolt and the mold cover 3;

[0071] S3, start the pressing machine, and the mold ram 2 moves toward the adjusting bolt driven by the oil cylinder, thereby compacting the ultrafine powder in the above-mentioned closed cavity and completing the powder tableting action. In step S3, the biasing member 5 drives the mold jacket 1 to move toward the adjusting bolt, so that the mold jacket 1 reaches a compacting position that fits tightly with the adjusting bolt. The above-mentioned biasing member 5 is a compression spring sleeved on the mold ram 2 of a columnar structure, and the two ends of the compression spring are respectively connected to the annular limiting boss 6 provided in the circumferential direction of the mold ram 2, and the end face of the mold jacket 1. In the process of the mold ram 2 moving toward the adjusting bolt, the above-mentioned compression spring will be compressed to push the mold jacket 1 toward the adjusting bolt, fill the gap in the above-mentioned step S2, and make the adjusting bolt and the mold cover 3 fit tightly;

[0072] S4, after the powder tableting action is completed, the mold ram 2 moves away from the adjustment bolt under the drive of the oil cylinder, and the mold ram 2 performs a demolding action. At this time, the interval between the annular limit boss 6 and the mold jacket 1 increases, and the compression spring returns to its original state from the compressed state. The thrust of the compression spring on the mold jacket 1 gradually decreases until it disappears, and the mold jacket 1 moves away from the adjustment bolt and reaches the release position. After this step is completed, there is a gap of 1mm to 2mm between the adjustment bolt and the mold cover 3, so that the operator does not need to manually twist the adjustment bolt to move it away from the mold cover, which effectively improves the operating efficiency of the press machine;

[0073] S5, directly push the swing arm to slide in the horizontal direction, drive the adjusting bolt to move horizontally through the swing arm, press the up button, and the mold cover 3 and the pressed sample are removed from the mold jacket (1).

[0074] The press machine of the present invention eliminates the need for the operator to manually pull the adjustment bolt with the help of an auxiliary rod to move the adjustment bolt away from the mold cover after the demoulding action in step S4 is completed, which effectively solves the problem in the prior art that the operation is very complicated and seriously affects the work efficiency. In addition, it avoids the problem that a negative pressure space is generated between the mold cover 3 and the adjustment bolt during the press process due to the large driving pressure of the mold pressure head, and the two are tightly connected and it is difficult to twist the above-mentioned adjustment bolt by manual operation. During the press process, the press machine of the present invention will push the mold jacket 1 upward through the elastic force generated by the deformation of the compression spring, and move toward the direction close to the adjustment bolt to drive the mold cover 3 and the adjustment bolt to fit closely, thereby ensuring that the press machine completes the tableting action. After the tableting is completed, the mold pressure head 2 moves downward, the compression spring returns to its initial state, and the mold jacket 1 is no longer affected by the elastic force generated by the deformation of the compression spring. At this time, since the mold jacket 1 is arranged in the vertical direction, the mold jacket 1 will move in the direction away from the adjustment bolt under the action of its own gravity and the pressure of the mold pressing head 2, thereby driving the mold pressing cover 3 to move to the loosened position, so that the mold pressing cover 3 and the adjustment bolt are restored to the state before tableting, and a gap of 1mm to 2mm is generated between the mold pressing cover 3 and the adjustment bolt. The above-mentioned mold pressing cover 3 and the adjustment bolt are in a separated state, and the swing arm can be pushed to translate the adjustment bolt to a position away from the mold pressing cover 3 without manually turning the adjustment bolt with the help of an auxiliary rod. The pressing machine in the present invention can automatically realize demoulding, reduce the labor intensity of operators, improve operating efficiency, and effectively improve the user experience.

[0075] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A pressure platform of a press machine, the press machine comprising a pressure platform for accommodating materials, and a limiting component (4) for abutting and fixing a mold cover (3) on the pressure platform; the pressure platform comprises: A base (10), and a mold pressing head (2) and a mold jacket (1) arranged on the base (10), wherein the mold jacket (1) is sleeved on the mold pressing head (2) to form a receiving tank for receiving materials; characterized in that: The mold jacket (1) is slidably disposed on the base (10) and is driven to move toward or away from the limiting component (4), and has the following functions: driving the mold cover (3) to a pressing position where it is tightly fitted with the limiting component (4); and driving the mold cover (3) to a loosening position away from the limiting component (4); A biasing member (5), the biasing member (5) being arranged on the base (10); during the pressing process of the pressing machine, the biasing member (5) applies a biasing force to the mold jacket (1) to move it toward the limiting member (4), thereby driving the mold jacket (1) to move to the pressing position; the biasing member (5) is an elastic element respectively connected to the mold jacket (1) and the mold pressing head (2); the mold pressing head (2) is a columnar structure, and the elastic element is a compression spring sleeved on the mold pressing head (2); An annular limiting boss (6) is provided in the circumferential direction of the mold pressing head (2); one end of the elastic element is abutted and connected to the annular limiting boss (6), and the other end of the elastic element is abutted and connected to the end surface of the mold sleeve (1) away from the mold pressing cover (3); the pressure platform also includes: a driving sleeve (7) sleeved on the mold pressing head (2) and used to drive the mold pressing head (2) to move; an annular positioning sleeve (8) is provided between the driving sleeve (7) and the elastic element and is respectively tightly fitted with the two; an annular accommodating cavity for accommodating the compression spring is formed between the annular positioning sleeve (8) and the mold pressing head (2); The pressure platform further comprises: a nest (9) matching the shape of the mold jacket (1), the nest (9) being detachably fixedly mounted on the base (10), and the mold jacket (1) being driven to slide in the inner cavity of the nest (9); A limiting structure is used to prevent the mold jacket (1) from being separated from the base (10), so that the mold jacket (1) switches between the pressing position and the releasing position; the moving distance of the mold jacket (1) between the pressing position and the releasing position is 1 mm to 3 mm; the limiting structure comprises: A boss (11) is arranged on one of the mold jacket (1) and the nest (9); The slide groove (12) is adapted to the boss (11), and the slide groove (12) is arranged on the other of the mold sleeve (1) and the nest (9), and is arranged along the length direction of the mold sleeve (1).

2. The pressure platform of the press machine according to claim 1, characterized in that: The mold jacket (1) is arranged in the vertical direction; during the demoulding process of the pressing machine, the mold jacket (1) moves to the released position under the pushing action of the mold pressing head (2) and the combined action of the weight of the mold jacket (1) itself.

3. The pressure platform of the press machine according to claim 1, characterized in that: The inner cavity of the driving sleeve (7) has an annular groove extending in a direction away from the die pressing head (2), and the annular positioning sleeve (8) is accommodated in the annular groove.

4. The pressure platform of the press machine according to claim 3, characterized in that: The outer peripheral wall of the annular positioning sleeve (8) and the annular groove are provided with mutually matching threads.

5. The pressure platform of the press machine according to claim 1, characterized in that: The boss (11) is an annular protrusion arranged along the circumferential direction of the mold sleeve (1), and the slide groove (12) is an annular groove matched with the boss (11).

6. A pressing machine, characterized in that: include: A limiting component (4) used for abutting and fixing the mold cover (3) on the pressure platform; as well as, The pressure table of the press machine according to any one of claims 1 to 5.

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